15 Commits

Author SHA1 Message Date
Jakub Zych
6b0b92674a refactor: remove dead descriptor-driven mechanisms (no remaining consumer)
Drop code whose only consumer was a retired runtime: hostBehaviors readers for
agentFileExtension, localTargetIsProjectRoot, sharedHooksDirName,
skillsManifestPrefix and skipCodexSkillsManifest; the empty
NON_REGISTRY_CONFIG_HOME_DESCRIPTORS array and live-config-guard plumbing; the
empty RUNTIME_NOTE_AUDIENCE_BY_HEADING filter; the unused resolveVersionFrom
export; and the WINDSURF_SESSION_ID workstream session key. Delete tests that
only exercised those mechanisms.
2026-10-06 20:49:35 +02:00
Jakub Zych
6cfa0c55d2 refactor: drop 12 runtimes, keep Claude, Codex, OpenCode, Cursor, ZCode, Antigravity
Removes kilo, kimi, kimi-code, copilot, windsurf, augment, trae, qwen, hermes,
cline, codebuddy and pi end to end: capability descriptors, installer branches
and converters (bin/install.js 14.9k -> 11.2k lines), TypeScript converters,
hook surfaces and runtime homes, review lanes qwen/kimi-code, the two pi
migrations, Kimi payload normalization in the hook guards, dead hostBehaviors
vocabulary, launcher home probes, fixtures, runtime-specific tests and the
prose that presented them as supported.

Installer output for the six kept runtimes is byte-identical to before the
prune. The Kimi tool-vocabulary tests in workflow-guard, read-guard and
read-injection-scanner are left in place pending a decision.
2026-10-06 20:02:40 +02:00
Jakub Zych
a9a7a328e6 refactor: hard-fork GSD -> MSD (Make Software Done)
Mechanical rename produced by scripts/msd-rename.cjs: gsd/Gsd/GSD -> msd/Msd/MSD
across contents and paths, upstream package/repo coordinates -> @golem15/msd-core
and golem15com/msd-core. Deep links into upstream history, sibling upstream
packages, the GSD-2 import feature, CHANGELOG.md and .changeset/ are kept as-is.

Hand edits on top: MSD block-letter banner and logos, LICENSE copyright line,
package/plugin identity, regenerated lockfile, install-tree fixtures, derived
registries and benchmark baseline; migration checksum baseline re-locked
(MSD keeps its own install state, so no install had applied the old sums);
sort-order and regex-escaped expectations in tests adjusted.
2026-10-06 01:47:40 +02:00
0xdhx
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
0xdhx
88b5775dc8 enhance(#4223): default-off interaction capture for gsd-ui-auditor via the chrome-devtools CLI (#4477)
* enhance(#4223): default-off interaction capture for gsd-ui-auditor via the chrome-devtools CLI

gsd-ui-auditor is chartered to audit interaction and handed a capture
driver with no interaction verb: `npx playwright screenshot` cannot
click, fill, hover, press or snapshot, so a hover state, an open menu,
a focus ring or a form's validation state never appears in its
evidence and every Experience Design finding degrades to code reading.

Implements the shape approved at triage, not a new capability:

- capabilities/ui/capability.json declares `workflow.ui_interaction_capture`
  (boolean, default false) on the capability that already owns the
  auditor (ADR-894 one-owner invariant); capability-registry.cjs regenerated.
- gsd-core/workflows/ui-review.md reads the key through gsd_run and hands
  it to the auditor as `interaction_capture:` in the spawn <config> block —
  the auditor carries no gsd_run resolver, so the key travels by value.
- agents/gsd-ui-auditor.md gains an anchored interaction-capture section
  AFTER the static block. With the key on and a Chrome binary resolved it
  starts the `chrome-devtools` CLI (chrome-devtools-mcp, floor ^1.8.0) on
  an --isolated profile, opens the dev URL the static block reached,
  takes the a11y snapshot for element uids, captures the baseline and a
  Tab focus-ring state, drives the UI-SPEC's interactive components, saves
  console output, and stops the daemon unconditionally. Key off, no dev
  server, or no Chrome: one status line, and the Playwright-only static
  path runs exactly as before — the static fence is untouched.

Needs only Bash: no MCP server, no tools: change. Chromium-only by
nature; Firefox/WebKit stay on Playwright. `wait_for` is MCP-only, so
readiness is polled through evaluate_script.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PanfY8KaLb4RVVubcUoGP6

* test(#4223): bind the interaction-capture shape and containment

- manifest, generated registry, config schema and config-set/loadConfig
  all know workflow.ui_interaction_capture as a default-off boolean, and
  hand-written non-booleans fall to the slice default
- the orchestrator reads the key and hands it down; the auditor never
  grows a gsd_run dependency
- the static fence stays Playwright-only and the interaction fence
  chrome-devtools-only, so key-off is today's path
- the interaction fence runs under bash with a stub driver on PATH: key
  off / absent / no dev server / no Chrome invoke nothing; the happy path
  starts first and stops last on the [selected] pageId with the documented
  flags; a failed capture is removed and not counted; new_page and start
  failures still honour the stop-only-if-started rule; CHROME_BIN and
  CHROME_DEVTOOLS_MCP_VERSION overrides flow through
- docs/CONFIGURATION.md row shape; registered in the docs-guard lane

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PanfY8KaLb4RVVubcUoGP6

* docs(#4223): document workflow.ui_interaction_capture and its how-to

- docs/CONFIGURATION.md: one row in the workflow.* table, default-off
- docs/AGENTS.md: the gsd-ui-auditor entry names the key and what the
  interaction-capture section adds, skips and never claims
- docs/how-to/enable-ui-interaction-capture.md: turn it on, read the
  `**Interaction captures:**` outcomes, what it does not do, turn it off
- docs/README.md: index the how-to beside live-DOM verification

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PanfY8KaLb4RVVubcUoGP6

* chore(#4223): add changeset

Added-type fragment; pr: carries the issue number until the PR exists.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PanfY8KaLb4RVVubcUoGP6

* enhance(#4223): use the /gsd:ui-review namespace form in the auditor's prose

Claude-facing source (agents/, workflows/) uses the /gsd:<cmd> namespace;
the hyphen form is retired there and the slash-command-namespace guard
rejects it. docs/ keep the hyphen form by convention.

Emitted-Drift-Ack-Growth: gsd-ui-auditor.md — #4223: the anchored default-off interaction-capture section (prose + one bash fence) appended after the static Playwright block inside <screenshot_approach>, plus one `**Interaction captures:**` line in each of the two report templates, one completion-checklist line and one Step-3 sentence. The static fence is byte-identical to next; nothing was removed or reordered.
Emitted-Drift-Ack-Growth: ui-review.md — #4223: a two-line config-get read + true/false normalisation in step 0 and one `interaction_capture:` line in the spawn <config> block with a three-line note on why the value travels by prompt. No step, gate, or dispatch shape changed.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PanfY8KaLb4RVVubcUoGP6

* enhance(#4223): per-run daemon session, bounded navigation, and step failures that count

Three findings from the pre-file adversarial review of the interaction
fence, folded in:

- `--sessionId <epoch>-<pid>` on every driver call. `start` restarts
  whatever daemon shares its session and --isolated isolates only the
  browser profile, so two concurrent audits — or an audit beside the
  operator's own CLI daemon — would otherwise stop each other. The CLI
  accepts hex and dashes only; the id is validated by the test stub.
- `new_page --timeout 30000`: the one verb that takes a bound, placed
  before every verb that does not, so a hung page is caught first.
- a failed take_snapshot or press_key now increments the failure count
  and is named on stdout; two clean screenshots can no longer read as
  `0 failed` after the step that gives the interactions their uids failed.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PanfY8KaLb4RVVubcUoGP6

* enhance(#4223): subshell-unique session id, CRLF-safe page-id parse, stale-snapshot removal

Second review round, both reviewers:

- session id is `<epoch>-<BASHPID>-<RANDOM>`: `$$` is inherited by a
  subshell, so two audits forked from one parent in the same second
  shared an id and could stop each other's daemon (driven by the reviewer)
- `tr -d '\r'` before the `[selected]` parse so a CRLF-emitting driver
  under Git Bash still matches the `$` anchor, and `|| true` on the
  assignment so a failed new_page cannot abort the block under
  `set -e -o pipefail` before the unconditional stop
- a failed take_snapshot removes any snapshot.txt it left or inherited
  from a reused directory, so stale uids never drive the interactions
- `<config>` placeholder is `{interaction_capture}`, lowercase like its
  `{phase_dir}` / `{padded_phase}` siblings — the block is a prompt
  template, not a bash heredoc
- how-to: the `not captured` row no longer claims the daemon started

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PanfY8KaLb4RVVubcUoGP6

* enhance(#4223): check new_page's exit status before parsing its output; regression cases for the edges

Third review round:

- a new_page that prints a page line and then exits non-zero is a failed
  navigation, not a page id: the exit status is checked in an `if` before
  the output is parsed (driven by the reviewer against the previous
  `|| true`, which masked exactly that)
- regression cases for what the last two rounds added: CRLF driver
  output, a stale snapshot removed on failure, partial-output new_page
  failure, and the whole fence under `set -e -o pipefail` (both the
  failed-navigation path and the happy path)
- the harness whitelist gains `date`; the session-id assertion now
  requires all three parts, so a silently empty epoch cannot hide again

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PanfY8KaLb4RVVubcUoGP6

* enhance(#4223): keep gsd-ui-auditor under the DEFAULT-tier size cap; changeset pr placeholder

- the three review folds pushed agents/gsd-ui-auditor.md to 25179 bytes,
  over the 24576-byte hard cap tests/agent-size-budget.test.cjs enforces;
  the interaction section's comments are tightened to the same content
  in fewer bytes (23559 now). No bash changed — the fence's own tests and
  the real-browser run are unchanged.
- .changeset/vivid-yaks-fly.md carries the policy placeholder `pr: 0`, which
  the post-create backfill rewrites to the PR's own number.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PanfY8KaLb4RVVubcUoGP6

* chore(#4223): set changeset fragment pr to 4477

* test(#4223): compare the fence's status path with the separator the fence uses

On the windows-latest lane the happy-path case failed on `\interaction` vs
`/interaction` alone: the fence joins "$SCREENSHOT_DIR/interaction" with a
literal slash, and the assertion built its expectation with path.join. Every
other case in the file passed on that lane, including the CRLF and
errexit/pipefail ones.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PanfY8KaLb4RVVubcUoGP6

* test(#4223): drop the inert file-header allow-test-rule marker

Review round 1 on #4477: the `source-text-is-the-product` marker sat at
line 2, outside no-source-grep's 8-line lookahead of every readFileSync
site (the first is ~60 lines down), so it suppressed nothing. It was also
unnecessary: every read in this file is a .md/.json path, which the rule
does not trigger on. Deleted rather than relocated — there is no site to
relocate it to. Negative control: `eslint` on the file is clean without it.

* chore(#4223): regenerate the platform-conformance-tier lists for the new test

Review round 3 on #4477. `next` gained chore(#4591)'s platform-conformance-tier
gate after this branch opened; its two committed lists must name every file
under tests/, and this PR's tests/ui-interaction-capture.test.cjs had never
been in them. Once the branch was updated against next the lists were stale
and three jobs went red on head 575667dd: lint-tests (gen-platform-conformance-tier
--check), conformance test (macos-latest) at 546 !== 547, and shard 1/3's
fragment-single-edit-propagation, which sees the same staleness as regen:derived
touching files beyond the fragment edit under test.

Regenerated with the repo's own generators, no hand-editing. The general tier
goes 546 -> 547 and the macOS tier 196 -> 197, each by exactly this one entry;
both --check arms are clean. Verified the red is this PR's own file and not
base drift: at upstream/next both generators report "list matches" (546 / 196),
and our committed copies were byte-identical to next's before this commit.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015CBQTeGX1JYHF5DRWp4wvZ

* fix(#4223): bound, confine and trap the chrome-devtools driver fence

Round 4 — three findings in one fence, interleaved on the same lines, so one
commit:

- Every driver call is time-bounded. `cdt <ceiling> <verb>` runs the client as a
  background job in its own process group (`set -m`) under a watchdog that kills
  the whole group at the ceiling — TERM, then KILL two seconds later. One pid is
  not enough: npm forwards SIGTERM only to its direct child, so killing `npx`
  alone leaves the client holding the fence's stdout and a `$(cdt … new_page)`
  capture blocked past the ceiling (driven against a real npx tree by the
  round's adversarial review; the pid-only first cut of this commit had exactly
  that hole). The watchdog is an exec'd bash (`"$BASH" -c`), never a `( … )`
  subshell: a subshell inherits bash's saved copies of the caller's stdio (the
  fds ≥10 a function-level `>/dev/null` redirect leaves behind) and holds them
  open, so a runner waiting for EOF waited out the whole 60 s ceiling whenever a
  watchdog outlived its kill — measured as the intermittent 30 s test run the
  review flagged; 0/60 after. It polls the job's process GROUP (`kill -0 --
  -pgid`, every 0.1 s) and stands down by itself once the group is empty;
  nothing ever signals it. The group, not the leader pid: a child can outlive
  the leader while holding the `$(cdt … new_page)` pipe, and a leader-pid poll
  stood down at once and left the substitution open-ended (driven by the
  round's adversarial review at 6× the ceiling; a pgid cannot be reused while
  any member lives, which a bare pid can). The daemon `start` launches is
  spawned detached (its own session) and never in that group. Two platforms
  forced the never-signalled shape. Under bash 3.2.57 the earlier `trap … TERM;
  sleep & wait $!` form ignored its TERM in 3 of 300 fast calls and slept out
  the whole ceiling — CI's macos job hanging 30 s right after `start`. On Git
  Bash a signal to a watchdog still starting up hung the fence's `wait` for it:
  18 of 20 fence tests at the harness's 30 s cap in 3 of 3 full-file runs,
  while a fence slowed by xtrace, or three tests run alone, never hit it (a
  startup race; the mechanism is not pinned further). Polling: 0/300 slow calls
  and 0 orphaned sleeps under 3.2.57 and 5.2, the fence suite 20/20 in 3 of 3
  full-file runs on Git Bash 5.2.37 (fractional `sleep 0.1`: driven on GNU,
  msys and busybox sleep; BSD sleep documents it). A clock that cannot launch
  (`sleep … || exit 0`) stands the watchdog down rather than firing at once
  and killing a healthy call — by design that leaves a hung call unbounded,
  the pre-round-4 behaviour, instead of failing a healthy one. A hung call
  returns once its group is gone: at the ceiling, plus up to the 2 s
  TERM-to-KILL grace. The KILL after the grace is sent only to a group that
  is still alive: a pgid freed during the grace can be reused, and an
  unconditional KILL could hit an unrelated group (the round's review).
  `start` (npx fetch + Chrome launch) gets CHROME_DEVTOOLS_START_TIMEOUT
  (180 s), every verb CHROME_DEVTOOLS_STEP_TIMEOUT (60 s). timeout(1) is absent
  on macOS and this agent carries no gsd-tools resolver, hence a bash watchdog
  rather than either.
- --allowUnrestrictedPaths -> --workspace "$INTERACTION_DIR": the driver may
  write under the run's interaction/ directory and nowhere else. Relative, like
  every --filePath (unchanged from rounds 1-3): the daemon resolves both against
  one cwd (chrome-devtools-mcp 1.9.0 spawns it with cwd: process.cwd() and
  path.resolve()s both), and a relative path needs no dialect translation — an
  absolute `pwd -P` path is an msys path on Git Bash, which a Windows-native
  daemon cannot resolve (CI's windows conformance shard caught the first cut).
  --workspace is a 1.9.0 flag (absent from 1.8.0's `start --help`, verified),
  so the documented floor moves from ^1.8.0 to ^1.9.0, where
  --allowUnrestrictedPaths is deprecated.
- `stop` is owed by an EXIT trap after a successful `start`, not by position
  (it replaces any earlier EXIT trap — none exists in this file); the explicit
  call keeps it in order, a flag makes the trap a no-op afterwards, and only the
  shell that installed the trap may act: a subshell copy of the fence state
  carries CDT_STARTED=1 and, under a timing race CI's ubuntu job hit (reproduced
  locally at 3/40 under load: the second `stop` came from a subshell pid, never
  main), issued a second `stop`. The identity is `$(exec /bin/sh -c 'echo
  "$PPID"')`, not $BASHPID — macOS ships bash 3.2, where BASHPID does not exist
  and CI's macos conformance job showed the guard comparing empty to empty. The
  fence was driven under bash 3.2.57 for the injected-subshell, errexit
  failed-new_page, errexit failed-resize, hung-start, hung-new_page and happy
  paths. A failed resize_page is a counted failed step now, not the one bare
  command an errexit runner could abort on.

Prose in the section is tightened to pay for the mechanism: 23559 -> 24517
bytes against the 24576 DEFAULT-tier cap.

Tests: the stub driver hangs as a real child tree (sh waiting on a child that
holds stdout — never an exec), so a pid-only kill fails the new
aHungNewPageWhoseChildHoldsStdoutIsStillCutOffAtTheCeiling test (negative-
controlled: it blocks for the harness's whole cap on the old wrapper). A hung
start and a hung capture are cut off within ceiling + grace + slack and still
reach stop; an injected bare failure under errexit reaches stop through the
trap, exactly once; an injected subshell call of cdt_stop issues nothing; the
happy path issues exactly one stop; every driver call site names a ceiling and
the only bare $CDT is the wrapper's own spawn; the start line carries
--workspace with the capture directory, every --filePath lies under it, and no
code line carries --allowUnrestrictedPaths. A driver whose leader exits at
once while a child keeps holding the capture pipe is still cut off at the
ceiling (negative-controlled: a leader-pid poll blocks for the harness's whole
cap). A watchdog whose clock cannot launch leaves a 300 ms driver call alone
(negative-controlled: the trap form kills `start` in under 20 ms). The harness
EXPORTS its stub-only PATH — unexported, the exec'd
watchdog fell through to bash's compiled-in default PATH and never saw the stub
dir — and ships `sleep` there as an exec-wrapper script (portable to Git Bash,
pid-preserving).

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LgNMb2G67rAJfFQRHEBTAj

* fix(#4223): gitignore gate covers the capture directory, and upgrades an existing file

Round 4 Blocker. The gate enumerated image extensions, so snapshot.txt (the
accessibility tree, with entered form values) and console.txt (which can carry
tokens) were committable by `git add .`. The gate now ignores `interaction/` as
a directory — the next artifact type is covered by construction — and it appends
whatever an existing .gitignore lacks instead of writing once. The write-once
form was the same defect one step later: every project that had already run an
audit would never have received the new pattern at all.

Tests run the gate fence under bash: a fresh file carries every pattern; an
image-only file from an earlier audit gains interaction/ and keeps its own
header without duplicating present lines; a second run appends nothing.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LgNMb2G67rAJfFQRHEBTAj

* test(#4223): declare the interaction-capture anchor as a comment marker

The #4324 colon-token gate (slash-command-namespace) landed on next after this
branch was opened and reads `<!-- gsd:ui-interaction-capture -->` as an
unconvertible /gsd: command token. It is a section anchor of the same family as
gsd:live-dom-families and gsd:write-continue, so it is declared in
COMMENT_MARKER_TOKENS rather than renamed. Found by running the base-added
gates against the merged tree; CI at ca8d2508 predates the gate.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LgNMb2G67rAJfFQRHEBTAj

---------

Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
Co-authored-by: CI Rebase Check <ci@gsd-redux>
2026-09-20 05:45:15 -04:00
Tom Boucher
6dcc0428dd fix(#4784): Xcode gates pass -project and derive the destination from available simulators (#4879)
* test(#4784): failing-first — Xcode gates must pass -project and derive the destination from available simulators

* fix(#4784): Xcode gates pass -project '$XCODEPROJ' and resolve the destination from available simulators, skipping loudly when none exist

Also surfaces the -collect-test-diagnostics never / workflow.test_gate_timeout
guidance on a 124 timeout (a real iOS suite measured ~600s of sysdiagnose
collection after the tests passed).

* test(#4784): reachability-honest test shapes — apostrophe-confused prose (the path the false positive actually reaches past the splitter) and the file's single-quote convention

* fix(#4784): review fold-ins — unanchor the simulator extraction (real simctl lines end in a state suffix), escape apostrophes for the bash -c layer, assign the command variables on the skip path, behavioral extraction test

The isolated reviewer's Finding 1 was critical: the first cut's $-anchored sed
matched ZERO real simctl lines (every device line ends in (Shutdown)/(Booted)),
so the gates would have skipped on every machine. The 46,454-test green could
not see it (content assertions do not execute the pipeline); the new behavioral
test runs the gate's own extraction against a real-format line.

* chore(#4784): backfill changeset PR number (4879)

---------

Co-authored-by: sim <sim@local>
2026-09-19 19:18:30 -04:00
Dennis Alexis Valin Dittrich
ad1477d659 enhance(#4154): validate configured entrypoints before reporting install success (#4249)
* test(260903-m7p): expose configured-entrypoint validation gap

* enhance(260903-m7p): validate configured entrypoints before success

* test(260903-m7p): require pre-success entrypoint validation

* enhance(260903-m7p): gate install success on entrypoints

* test(260903-m7p): cover configured entrypoints across runtimes

* enhance(260903-m7p): cover emitted runtime entrypoints

* fix(260903-m7p): sandbox HOME in finishInstall test and fix changeset pr number

- finishInstall(...'cline'...) calls writeNonClaudeDefaults(runtime) in-process
  before the new configured-entrypoint assertion throws. Without a HOME +
  config-location-env sandbox that write resolved through the ambient
  environment and landed in the developer's live ~/.gsd (confirmed absent on
  origin/next baseline, present only on this branch — full-suite HERMETICITY
  WARNING). Sandbox HOME/USERPROFILE and scrub config-location env for the
  duration of the test, matching the existing in-process finishInstall/
  install() pattern in tests/install.test.cjs (#2665).
- .changeset/quick-wasps-sing.md: pr: 0 is a never-backfilled placeholder
  (CONTRIBUTING.md) that fails changeset-lint's invalid_pr check; set to the
  fork PR number until the upstream PR number is known.

* fix(260903-m7p): repair cross-platform and pre-existing shape fallout

- tests/configured-entrypoint-validation.test.cjs: the win32 branch of
  ensureCodexHooksJsonSessionStart writes a .cmd shim under
  <codexRoot>/hooks/; create that dir in the test (the real installer only
  calls this once hooks/gsd-check-update.js already exists) and assert the
  platform-common entrypoint shape instead of a fixed non-Windows array,
  since win32 legitimately emits two entries (cmd shim + script).
- tests/install.test.cjs: finishInstall's shared settings-json return now
  carries configuredEntrypoints/rollbackInstallerMigrations for every
  runtime on that path (trae included, not just Claude/Cursor/Windsurf);
  update the trae install() exact-shape assertion to match.

* fix(260903-m7p): keep .sh interpreter tracking consistent with unresolved bash

configuredEntrypointsForHook's shell branch dropped interpreterCandidates
entirely when resolveBashExecutable returned null, unlike the sibling
portableHooks runner entry a few lines below (which correctly falls back to
the literal 'bash' token). Found via agy adversarial review; verified
unreachable through the current call graph (buildHookCommand's own
resolveBashRunner==null gate already short-circuits before
recordConfiguredHookCommand runs), so this is a defensive consistency fix,
not a live-bug patch — kept for the next caller that does not share that
gate.

* chore(260903-m7p): backfill changeset pr number to the opened upstream PR

.changeset/quick-wasps-sing.md carried the fork PR number (16) as a
placeholder until the upstream PR existed; open-gsd/gsd-core#4249 is now
open, so record its real number per CONTRIBUTING.md's changeset pr-field
convention.

* fix(#4154): track already-registered hooks for entrypoint validation on update

applySettingsJsonHooks registers each guard hook only if absent, so a hook
already present from a prior install keeps its stale on-disk command. The
new entrypoint tracker always records the freshly-computed command for it,
which never matches what is actually persisted, so the exact-string filter
in finishInstall silently dropped it from validation — the Blocker case
this feature exists to catch (an already-installed entrypoint going stale
between installs) was exactly the case it never validated.

Match on the managed script's basename instead, which the persisted
command carries either way, so an already-registered hook stays in the
validated set. Regression test forces this path by mutating a
freshly-installed hook's persisted command before a second install.

* fix(#4154): distinguish an unreadable script from a missing one

validateConfiguredEntrypoints folded an EACCES statSync failure into the
same 'missing' reason as ENOENT, misreporting a real permission problem as
an absent file. Check the error code and report 'unreadable' instead.

* docs(#4154): document entrypoint validation's rollback and PATH scope

CONTEXT.md's Runtime Hooks Surface Module / Installer Module entries had
no mention of ConfiguredEntrypoint/validateConfiguredEntrypoints, despite
bin/install.js x CONTEXT.md being this repo's strongest co-change pairing.

The update-gsd.md how-to overstated what a validation failure undoes: for
Codex/Cursor/Windsurf/Kimi, their own writer already persisted hooks.json/
config.toml inside install() before the aggregate validation call runs, so
there is no rollback path for that write regardless of "where available"
phrasing. Also note that interpreter resolution checks the installer's own
PATH, not necessarily the PATH a hook fires under later (#2979 launchers).

* chore(#4154): point changeset pr field at the fork PR while CI runs there

Mirrors the branch's own prior backfill commit: pr: matches whichever PR
number changeset-lint is currently validating against (fork PR #16 during
the fork-first CI/review loop), flipped back to the upstream PR number
right before the final push to open-gsd/gsd-core.

* fix(#4249): address adversarial-review findings in entrypoint validation

An internal adversarial review (agy/gemini-3.8-flash-high) of the whole PR
found several real gaps beyond the human reviewer's Blocker, verified
against source before fixing:

- Codex's install() result bound rollbackInstallerMigrations to the narrow
  installer-migrations-only rollback instead of restoreCodexSnapshot (#3245),
  the full pre-install snapshot/restore Codex already owns for exactly this
  case — a validation failure discovered outside install() reverted nothing
  of the config.toml/hooks.json that call had already written.
- The register-only-if-absent basename match from the prior fix used a bare
  substring, which an unrelated user command mentioning the same filename
  could false-positive into GSD's validated set — anchored on the
  `/hooks/<basename>` path segment instead.
- nodeCandidates checked raw process.execPath (always true — we're running
  in that process) instead of normalizeNodePath's stable version-manager
  alias, the same one buildNodeRunnerChainToken bakes as its first choice —
  a false green regardless of whether that alias itself still resolves.
- An entry with no interpreterCandidates (Cline's PreToolUse hook, or a
  Windows-Claude .sh hook invoked without a bash runner) runs via its own
  shebang; validateConfiguredEntrypoints checked only file-type, never the
  execute bit. Cline's writer also never reported an entrypoint at all.
- Duplicate (configPath, scriptPath) entries (e.g. Kimi's context-monitor
  hook registered across several events) were validated once per duplicate.

Each fix is covered by a new or extended test; the Codex one required
inlining runCodexInstall's env sandboxing so the rollback closure — which
re-resolves the $HOME-relative skills root live — runs before the sandbox
is torn down, matching how installAllRuntimes' real aggregate gate calls it.

* docs(#4249): document the round-2 entrypoint-validation fixes

Runtime Hooks Surface Module and Installer Module entries now name
ConfiguredEntrypoint's not-executable reason, the normalizeNodePath
alignment, Cline's tracked hook, and which install() result the
finishInstall/installAllRuntimes rollback path actually reverts per
runtime (Codex's full snapshot vs. the others' narrow migrations-only
rollback).

* chore(#4249): point changeset pr field at the upstream PR now that fork CI is green

* fix(#4249): address agy adversarial-review findings

- validateConfiguredEntrypoints: statSync alone never detects a
  chmod-000 script (it only needs parent-dir search permission), so an
  interpreter-invoked entry with an unreadable script passed validation.
  Add an explicit R_OK check for the interpreterCandidates branch only —
  the candidate-less/shebang branch already has its own X_OK gate.
- docs/how-to/update-gsd.md: the blanket "does not revert" claim was
  false for Codex, which reverts config.toml/hooks.json via its full
  pre-install snapshot; qualify it per runtime.
- tests/codex-config.test.cjs: the #4249 rollback regression test
  asserted skills/ and VERSION were reverted but never asserted
  config.toml/hooks.json were too, despite the test's own stated intent.
- CONTEXT.md: qualify which interpreterCandidates entries get
  normalizeNodePath'd (Node hooks only, not .sh/bash) and note Codex's
  Windows .cmd shim as a third candidate-less case that relies on
  extension dispatch, not a shebang.

* fix(#4249): validate Cline's PATH-dependent interpreter, not just its execute bit

Cline's hook is a hybrid: it self-executes via '#!/usr/bin/env node',
so it needs the execute bit (like any shebang-invoked entry), but its
interpreter is looked up on PATH by 'env' at hook-fire time (unlike
every other GSD JS hook, which bakes an absolute node path specifically
to avoid that dependency). The candidate-less/interpreterCandidates
fork treated these as mutually exclusive, so Cline's entry silently
skipped interpreter resolution entirely — a completely missing 'node'
on PATH would still validate successfully.

Add an orthogonal selfExecutable flag so both checks run for entries
that need them. (CodeRabbit finding on the fork rehearsal PR.)

* fix(#4249): address second-round adversarial review findings (opus + agy)

- validateConfiguredEntrypoints: R_OK now runs for every scriptOk entry,
  not just interpreterCandidates ones — a self-executable shebang script
  is still opened and read by its kernel-invoked interpreter, so X_OK
  alone never proved it was readable.
- selfExecutable is now the sole, explicit source of truth for the
  execute-bit check (every producer that needs it sets the flag) instead
  of being partly inferred from an absent interpreterCandidates, which
  Cline's hybrid entry also carries.
- The execute-bit check now skips explicitly on win32 (matching
  resolveExecutableBinary's own carve-out) instead of relying on Node's
  accessSync(X_OK)-as-F_OK no-op, which only protects a real Windows
  machine and not a test that simulates win32 on a POSIX runner.
- bin/install.js: fixed a stale comment claiming no runtime's
  install()-time writes have a rollback path — Codex's does
  (restoreCodexSnapshot) — and added the omitted Cline to both that
  comment and CONTEXT.md's equivalent lists.
- CONTEXT.md: fixed the Cline description left stale by the previous
  commit's selfExecutable addition, and rewrote the validation-mechanism
  paragraph for clarity (writing-for-agents pass).
- docs/how-to/update-gsd.md: split an overloaded 4-clause sentence.
- Removed a fault-injection integration test that could not reliably
  exercise the real installAllRuntimes -> finalize -> rollback wiring
  without fighting the installer's own pre-registration existence
  guards; the constituent pieces remain covered individually.

* fix(#4249): pin platform in X_OK-testing entries so they're deterministic cross-CI-runner

X_OK is a POSIX-only concept, skipped entirely when an entry's platform
is win32 (matching production). Two test entries omitted platform,
defaulting to process.platform — on an actual windows-latest CI runner
that silently skipped the very check they were meant to exercise,
turning 'not-executable' into a false pass. Pin platform: 'linux' so
these are deterministic regardless of which OS runs the suite.

* fix(#4249): classify EPERM the same as EACCES in statSync error handling

Windows raises EPERM (not EACCES) for a parent directory that couldn't
be traversed into — was falling through to 'missing', misreporting a
genuine permission problem as a nonexistent path.

* docs(#4249): address final CodeRabbit doc-completeness findings

- CONTEXT.md: install()'s documented result shape omitted
  configuredEntrypoints; the ConfiguredEntrypoint shape omitted
  selfExecutable.
- docs/how-to/update-gsd.md: the failure-mode sentence omitted
  unreadable and lacks-execute-permission, which the installer also
  rejects.

* fix(#4249): stop double-validating every configured entrypoint on install/update

installAllRuntimes' finalize() already runs assertConfiguredEntrypoints
once over the aggregate set; finishInstall then re-ran the identical
check per runtime in the printSummaries loop right after, so every
entrypoint paid its statSync/accessSync/interpreter-resolution cost
twice on every install and update. Add entrypointsAlreadyValidated to
skip the redundant pass specifically on that path, while leaving the
check intact for any caller that invokes finishInstall directly.

* chore(#4154): point changeset pr field at rehearsal fork PR while CI runs there

* perf(#4249): memoize interpreter candidate resolution across entrypoints

resolveExecutableBinary walked PATH once per (entry, candidate) pair; a
typical install has a dozen-plus entries sharing the same few candidate
lists (process.execPath for JS hooks, bash for shell hooks). Cache by
(platform, candidate) so each distinct pair resolves once per validation
call instead of once per entry.

* chore(#4249): point changeset pr field at the rebased rehearsal fork PR

* fix(#4249): drop entrypoint tracking from the now-dead Codex event writer

#2586 (landed on next after this branch forked) removed install.js's
CODEX_EXTENDED_HOOK_EVENTS registration loop, so ensureCodexHooksJsonEvent
no longer runs during install or update. The ConfiguredEntrypoint records
this branch added inside it were therefore unreachable and untested. Restore
the function to its upstream shape; the entrypoints it used to report were
never collected by any caller.

* refactor(#4249): drop the revalidation bypass flag and the candidate cache

Both were this PR's own micro-optimisations over a set of roughly a dozen
entries. `entrypointsAlreadyValidated` let a caller turn the finishInstall
gate off to save one statSync/accessSync pass; `resolvedCandidateCache`
memoised resolveExecutableBinary across entries that are already deduped by
(configPath, scriptPath). Neither is measurable, and the flag was the only
way to reach finishInstall with validation disabled. finishInstall now
always validates what it is given.

* chore(#4249): point the changeset pr field back at the upstream PR

* refactor(#4249): track settings.json entrypoints without the hooksSurface gate

The install-surface writer only tracked configured entrypoints when the
runtime's descriptor also declared `hooksSurface: 'settings-json'`. Nothing
asserts that axis agrees with `installSurface`, so a descriptor that broke
the coupling would silently pass `configuredEntrypoints: undefined` and drop
that runtime out of the validation this PR adds — reintroducing the exact
'reports Done! over a broken entrypoint' failure #4154 exists to close.

Remove the dependence rather than test it: everything recorded on this path
lands in settings.json by construction, and the registered-command filter
already discards entries no persisted hook references.

* chore(#4249): put the changeset body in the documented two-part format

CONTRIBUTING.md and .changeset/README.md both show
`**<bold change>** — <symptom-led explanation>.`; the fragment was a single
unbolded sentence.

* chore(#4249): point the changeset pr field at the rehearsal fork PR while CI runs there

* fix(#4249): restore the whole manifest-tracked GSD file set on Codex rollback

#3245's snapshot covers config.toml, hooks.json, skills/gsd-*, agents/gsd-*
and gsd-core/VERSION. The install overwrites every other GSD-owned file too —
hooks/, gsd-core/CHANGELOG.md, scripts/, gsd-core/.gsd-runtime, the manifest
itself — before the entrypoint-validation gate runs, so a validation failure
left the new payload sitting on top of the restored old config.

Snapshot the file set the PREVIOUS install's gsd-file-manifest.json claims,
before runInstallerMigrations so the bytes are the true pre-install state, and
restore it from both Codex rollback closures ahead of the per-surface restores.
Files only the failed install introduced are removed, read from the manifest
now on disk. The manifest is already the authoritative record of what GSD owns,
so no second hand-written list can drift out of sync, and user-owned files are
never snapshotted or removed. Every path is confined through
resolveInstallRelativePath, so a hand-edited manifest cannot turn rollback into
an arbitrary-path write.

Non-Codex runtimes are unaffected: the snapshot is gated on the same
tomlConfigInstall + non-minimal condition as #3245's.

* fix(#4249): keep the managed-file snapshot honest in minimal mode and on a bad manifest

Two follow-on defects in the previous commit's snapshot:

- The capture was gated on `!isMinimalMode`, copied from #3245. A core/
  --minimal Codex install still writes gsd-core/, hooks/, scripts/ and the
  manifest, and restoreCodexSnapshot is reachable in that mode (#2695), so the
  snapshot came back empty while the rollback still ran — and its removal pass
  would have deleted every file the new manifest lists. Gate on
  tomlConfigInstall alone, matching where the rollback actually reaches.

- An unreadable or unparseable prior manifest was caught alongside ENOENT and
  treated as a fresh install. That is the same empty-snapshot state, so a failed
  update over a real install with a corrupt manifest could delete its prior
  payload. Track whether the pre-install GSD-owned set is KNOWN: ENOENT means
  known-empty; any other read error or a parse failure means unknown, and the
  restore closure returns without touching anything, degrading to #3245's
  narrower rollback. Deliberately not fatal — a corrupt manifest has to stay
  repairable by reinstalling over it.

Both paths are covered by red-checked regression tests.

* fix(#4249): snapshot Codex skills, agents and VERSION in minimal mode too

commit removed from the manifest snapshot. restoreCodexSnapshot is reachable
for a core/--minimal install (#2695), and its pass-2 sweeps remove every gsd-*
skill dir and gsd-* agent file the snapshot does not claim — so with an empty
minimal-mode snapshot a rollback deleted the whole skills/agents surface with
nothing to restore it from. Codex resolves skills to $HOME/.agents/skills via
the ADR-1239 skills-kind home override, so this is also the reason manifest
`skills/` keys do not resolve under configDir: that surface belongs to this
snapshot, not to the manifest-driven one.

Gate on tomlConfigInstall alone. _codexPreConfigRollback stays null in minimal
mode — doing nothing on an early failure is the non-destructive side.

Covered by a red-checked regression test that plants bytes in an alternate-home
skill file, reinstalls under the core profile marker, and asserts the rollback
restores it.

* fix(#4249): never remove on rollback unless a prior manifest proves what predates the install

Three defects in the manifest-driven Codex rollback, all in its removal half:

- ENOENT marked the snapshot usable, arming the removal pass on a FIRST
  install. GSD may have overwritten a user's file at a manifest-tracked path
  there, and no prior manifest records the difference — so rollback deleted it
  where before it merely left it overwritten. Absent, unreadable and malformed
  manifests now all leave the prior set UNKNOWN and skip removal entirely.

- Membership was tested against the map of files whose pre-install read
  SUCCEEDED, so a tracked file that existed but was unreadable read as
  introduced-by-this-install and was removed. Track the prior manifest's paths
  in their own Set and test against that.

- The unreachable "delete the manifest when there was no prior one" branch is
  gone: usable now implies a parsed prior manifest.

Also adds the end-to-end test the aggregate gate was missing — the four Codex
rollback tests drove the closure directly, proving the restore but not the
wiring. installAllRuntimes(['codex','cline']) under an emptied PATH makes
Cline's `env node` entry fail validation for real, and asserts Codex's payload
comes back.

Test preamble (HOME/USERPROFILE sandbox + config-env scrub) is now one helper
instead of six copies. Both new tests are red-checked.

* test(#4249): use unlinkSync, not rmSync, to drop the manifest in a test

lint:ci's raw-fs.rmSync rule points tests at helpers.cleanup for its
Windows-EBUSY retry budget. That budget is for directory trees; this removes a
single file, which unlinkSync says more precisely and the rule does not flag.

* chore(#4249): point the changeset pr field back at the upstream PR

* fix(#4249): use an unambiguous dedup key and surface partial-restore failures

trek-e's 2026-09-08 adversarial pass flagged two findings in the new
entrypoint-validation/rollback code:
- assertConfiguredEntrypoints' dedup key already used a raw NUL
  separator (introduced in ceebb65f2d), but git/Read render NUL as a
  space, so the key looked like a plain-space join to every reviewer
  that read the diff. Replace it with JSON.stringify([configPath,
  scriptPath]) so the separator is visible and unambiguous.
- restoreManagedFileSnapshot's per-file restore catch block claimed to
  'surface the original error' but only swallowed it, matching (and
  widening) the pre-existing #3245 restoreCodexSnapshot pattern. Add
  an actual console.warn using the existing best-effort-warning
  convention, scoped to just this PR's new function.

* fix(#4249): treat a files-less prior manifest as unknown, not known-empty

agy's gemini-3.8-flash-high adversarial pass (round 5) found and I
reproduced empirically: a structurally-valid manifest missing the
files key (e.g. {"version":1}) parses without throwing, so
Object.keys(undefined || {}) silently read as 'zero files predate
this install' instead of the UNKNOWN state the malformed-manifest
guard exists to produce. Rollback's removal pass then deleted every
GSD-owned file the failed install's own manifest listed, including
ones that predated it — the exact data loss the #4249 CodeRabbit
malformed-manifest fix was supposed to prevent, reachable through a
JSON.parse success instead of a failure. Route the shapeless case
into the same catch-all UNKNOWN path via an explicit shape check.
Regression test reproduces the deletion before the fix and confirms
the file survives after it.

Also extend restoreManagedFileSnapshot's removal-pass rmSync and
final manifest-rewrite catches with the same real console.warn
trek-e's round-4 review asked for on the per-file restore catch —
same rollback function, same operator-facing-signal gap.

* docs(#4249): correct which runtimes actually leave a written config on rollback

agy's completeness audit (round 5, holistic pass) caught this new
paragraph claiming 'for every other runtime, the configuration file(s)
already written during that update are left in place' — false for
Claude Code and other settings.json-based runtimes, whose write never
happens on failure (assertConfiguredEntrypoints runs before
finishInstall's writeSettings). Only Cursor/Windsurf/Kimi/Cline
actually match that description, since they persist their config file
inside install() ahead of the gate. Split the one sentence into the
three actual outcomes; matches the PR body's own accurate Before/After
wording, which this doc addition had drifted from.

* fix(#4249): clean up doc/comment mismatches and dead fields from opus review

Opus critical-code-reviewer + ponytail-review pass on the final diff:
- assertConfiguredEntrypoints carried finishInstall's old docblock
  ("Apply statusline config, then print completion message") from
  before this function was inserted between comment and callee.
  finishInstall already has its own accurate #4249 comment, so the
  stale docblock is removed rather than moved.
- checked: number on ConfiguredEntrypointValidationResult and
  error.configuredEntrypointValidation on the thrown error: the first
  had zero consumers anywhere in the repo, including its own defining
  file, and is removed. The second matches an existing repo
  convention (bin/install.js's installerMigrationRollbackFailures,
  #4249 predates this PR) of attaching structured diagnostic context
  to a re-thrown Error even before a consumer exists, so it's kept.
- finishInstall's own assertConfiguredEntrypoints call is a redundant
  backstop on the real production path (installAllRuntimes's aggregate
  call already validates the superset first), but its comment read as
  though this call alone provided the before-the-write guarantee.
  Clarified rather than removed — it's the only gate for a caller that
  invokes finishInstall directly.

* chore(#4249): split the manifest-driven rollback engine out into #4544

Issue #4154 asked the installer to consume a validation failure "through
the existing rollback mechanism, without a second transaction mechanism".
The manifest-driven rollback widening added during review (capture every
path the prior gsd-file-manifest.json claims, restore those bytes, remove
what only the failed install introduced) is that second mechanism on a
plain reading. It is a real fix for a #3245-era gap, but an independent
one, so it moves to its own bug report and PR.

Removed here:
- bin/install.js: the pre-install managed-file capture block and
  restoreManagedFileSnapshot, plus its call sites in
  _codexPreConfigRollback and restoreCodexSnapshot (99 lines).
- tests/configured-entrypoint-validation.test.cjs: the five tests that
  exercise the manifest engine.
- CONTEXT.md and docs/how-to/update-gsd.md: the sentences describing the
  widened restore. update-gsd.md again documents the #3245 surfaces only.

Kept, because it is #4154's own scope:
- the entrypoint-validation gate itself;
- Codex's install() result binding rollbackInstallerMigrations to
  restoreCodexSnapshot (config.toml, hooks.json, skills/gsd-*,
  agents/gsd-*, gsd-core/VERSION);
- the !isMinimalMode gate removal on that snapshot. Binding the closure
  to the result made it reachable for a core/--minimal install, where its
  pass-2 sweeps delete every gsd-* skill dir and agent file the snapshot
  does not claim; an empty minimal-mode snapshot therefore deleted the
  whole surface with nothing to restore.

The surviving aggregate-failure test now asserts on config.toml, a
surface the #3245 snapshot owns, instead of gsd-core/CHANGELOG.md, which
only the manifest engine restored.

Refs #4544

* test(#4249): cover configured entrypoints through the packed install path

#4154's scope lists install smoke coverage alongside the installer gate —
"assert representative configured entrypoints resolve for supported runtime
profiles". The gate itself (assertConfiguredEntrypoints /
validateConfiguredEntrypoints) is unit-covered by in-process install() calls;
nothing proved the property survives npm pack -> npm install -g -> install.js.

Add Cycle 4 to runSmoke. For each of claude and codex — the two distinct
config surfaces GSD writes launch paths into (settings.json, and hooks.json +
config.toml) — run the tarball-installed installer into a throwaway HOME, then
re-read that runtime's own written config and return the new
ENTRYPOINT_UNRESOLVED code when a script path it names does not resolve to a
file. install-smoke.yml already asserts .code == "ok" on the CLI, so the check
becomes a release gate on every matrix host without workflow changes.

The scan re-derives paths from the written config instead of reusing the
installer's own entrypoint list, and test I shows why that matters: a
registration the installer never touched during a run is invisible to the
in-process gate, so the install exits 0 and only reading the config back off
disk catches the dangling launch path.

* ci(#4249): pack a publish-shaped tarball in the install smoke lane

`npm pack` runs prepack/prepare (build:lib); only prepublishOnly runs
build:hooks. hooks/dist is gitignored, so the tarball install-smoke.yml packs
after `npm ci` carries no hook scripts at all — the lane has been smoking a
package that differs from the published one in exactly the artifacts the
lifecycle smoke is supposed to launch.

That went unnoticed because the lane's init runs `--local`, which registers no
statusline and therefore registers no hook whose target is missing. A
`--global` install on the same tarball exits 1 on #4249's own gate
(`gsd-statusline.js (missing)`), which is what the new configured-entrypoint
cycle performs, so without this step the cycle would report INIT_FAILED
instead of checking anything.

Build hooks before packing so the smoked tarball matches prepublishOnly. The
CLI now reports 16 configured entrypoints for claude and 1 for codex instead
of zero.

* fix(#4249): scope Codex's full snapshot restore to entrypoint failures

Binding Codex's result to `restoreCodexSnapshot` made ANY finalize-stage
exception un-install a Codex install that had already succeeded and already
printed its own "Done!" summary — `rollbackFinalizedInstallerMigrations` wraps
the whole `finalize()` body, not just the aggregate `assertConfiguredEntrypoints`
call.

Nothing documents that. `docs/installer-migrations.md#phase-4-installupdate-integration`
scopes finalize-stage rollback to installer *migrations* ("the executor uses the
journal to restore modified paths"), and this PR's own operator-facing paragraph
in `docs/how-to/update-gsd.md` scopes the Codex config.toml/hooks.json/skills/
agents/VERSION revert to entrypoint-validation failures specifically ("If a
script is missing, unreadable, ... For Codex, this reverts ..."). The wide
behaviour is also incoherent as a transaction abort: the same doc says Cursor,
Windsurf, Kimi and Cline keep the config they wrote inside install().

Concretely: `installAllRuntimes(['codex', 'kilo'])` where Kilo's finishInstall
hits EACCES writing kilo.json rolled Codex's config.toml back to its pre-install
bytes — on an update, silently downgrading a working Codex install to the
previous version while the user had just been told it was Done.

Select the rollback by error kind instead. `assertConfiguredEntrypoints` already
tags its error with `configuredEntrypointValidation`, so the full snapshot
restore runs for that error (and anything downstream of it, including
finishInstall's per-runtime backstop) and the installer-migrations-only closure
runs for everything else. The codex result now also exposes that narrow closure
as `rollbackInstallerMigrationsOnly`; `rollbackInstallerMigrations` keeps meaning
the full restore, so the direct-call contract asserted by
tests/codex-config.test.cjs is unchanged.

Adds a regression test that installs codex+kilo together, injects EACCES on the
Kilo permission write by monkeypatching node:fs (restored in a finally — never
chmod 0o000, which root bypasses in CI), and asserts Codex's config.toml keeps
the bytes the successful install wrote. Verified red against the pre-fix
unconditional path.

Cline cannot host this test: its plan is writesSharedSettings:false +
finishPermissionWriter:null, so its finishInstall performs no write and has no
non-entrypoint failure path. Kilo's configureKiloPermissions runs unconditionally
(unlike OpenCode's, it is not GSD_TEST_MODE-gated) and ends in an unguarded
fs.writeFileSync.

* docs(#4249): sync CONTEXT.md's rollback description with the round-6 narrowing

CONTEXT.md still described Codex's rollback as an unconditional bind
to restoreCodexSnapshot after ff13adc00 scoped it to entrypoint-
validation failures via rollbackInstallerMigrationsOnly and the
configuredEntrypointValidation error tag. Caught during the round-6
PR body pass.

* fix(#4249): stop rollbackInstallerMigrations meaning its own opposite

Codex's install() result bound `rollbackInstallerMigrations` to
restoreCodexSnapshot (the FULL pre-install snapshot restore) and put the
actual installer-migrations-only closure behind
`rollbackInstallerMigrationsOnly` — so for one runtime the unsuffixed name
meant the opposite of what it says, and CONTEXT.md had to concede as much
in prose. Invert it: `rollbackInstallerMigrations` is the narrow closure
for every runtime, matching both its name and the meaning it already has
on next, and the snapshot restore gets its own Codex-only field,
`rollbackPreInstallSnapshot`. The selection in
rollbackFinalizedInstallerMigrations collapses to one line and no longer
needs a fallback chain.

Also in this commit, all against the same rollback path:

- Correct the rollbackFinalizedInstallerMigrations comment. It read as if
  the round-6 narrowing prevented any sibling-triggered revert of a Codex
  install the user has already seen "Done!" for. It does not, and is not
  meant to: `wide` is true for ANY entrypoint-validation error from ANY
  runtime, because the aggregate gate is all-or-nothing — an invalid Cline
  entrypoint reverts Codex's snapshot, which
  tests/configured-entrypoint-validation.test.cjs's 'an aggregate
  entrypoint validation failure rolls the Codex install back (#4249)'
  asserts directly. The discriminator is the error's KIND, not which
  runtime owns the failing path. Comment and CONTEXT.md now say that.

- Name the runtime in the "Configured entrypoint validation failed" error.
  ConfiguredEntrypointInvalid already carries `runtime`; the message threw
  it away, leaving an operator of a multi-runtime install unable to tell
  whose entrypoint broke — which matters precisely because the failure can
  revert a runtime that was itself fine.

- Set `configuredEntrypoints: []` explicitly on the copilot-instructions
  early return. Every other branch states the key; this one relied on
  installAllRuntimes' `(result.configuredEntrypoints || [])` defence.
  `[]` is correct, not a workaround: every Copilot hook is an inline
  printf one-liner (GSD_COPILOT_*_HOOK_BASH/PWSH), so there is no
  GSD-managed script or interpreter to resolve.

No behaviour change beyond the error-message text.

* docs(#4249): narrow the smoke scan's config-surface claim to what it checks

RUNTIME_CONFIG_FILES claimed every GSD-managed executable a runtime is
told to launch is registered in one of settings.json / hooks.json /
config.toml, and that nothing else in a config dir is runtime
configuration. Both halves are false as stated. Cline registers its hook
at .clinerules/hooks/PreToolUse — a subdirectory, and not one of those
names (writeClineArtifacts, src/runtime-hooks-surface.cts). Kimi's native
[[hooks]] config.toml lives under resolveKimiHooksTomlDir() (~/.kimi),
a directory separate from Kimi's own GSD configDir — the same gap
installer-migration 007 already documents as structurally unreachable.

The scan is in fact correct for what it runs against: entrypointRuntimes
defaults to claude + codex, whose launch paths do all live in those three
top-level files. Restate the docstring at that scope, name the two known
out-of-scope surfaces, and warn that adding either runtime to
entrypointRuntimes without teaching scanConfiguredEntrypoints about its
surface yields a scan that finds zero entrypoints and proves nothing.
The entrypointRuntimes default comment carried the same overgeneralization
("every other runtime reuses one of them") and is corrected with it.

Documentation only; no code change.

* fix(#4249): complete configuredEntrypoints/rollback shape on unparseable settings.local.json

An internal adversarial review (agy/gemini-3.8-flash-medium, round 8) found
that install()'s settings-json early return for an unparseable
settings.local.json omitted configuredEntrypoints and
rollbackInstallerMigrations from its result, unlike every other branch.
rollbackFinalizedInstallerMigrations reads result.rollbackInstallerMigrations
unconditionally, so this branch silently dropped its own installer-migration
rollback on a later finalize-stage failure.

Completed the return shape: configuredEntrypoints: [] (matching Copilot's
equally-early no-entrypoints-yet return) and rollbackInstallerMigrations
(already in closure scope). Red-then-green regression test added.

* test(#4249): ensure hooks/dist before packing in release-tarball-smoke.install.test.cjs

Same internal adversarial review (round 8): this suite's before() packed the
tarball directly, without the ensureHooksDist() guard every sibling
install-test suite (install.test.cjs, install-minimal-hooks.test.cjs,
mcp-catalog-parity.install.test.cjs) already uses. On a clean tree, or run
in isolation ahead of a suite that builds hooks/dist itself, this suite's
pack would ship a tarball with no hook scripts and fail closed on
SMOKE.INIT_FAILED instead of testing anything.

* fix(#4249): refresh stale test-timings weight for the codex-config split

next's own consolidation split (#4139/#4540) moved tests/codex-config.test.cjs's
heavy install()-pipeline blocks into tests/codex-config-hooks.test.cjs, but the
CI shard packer's weight table (tests/test-timings.json) was never updated:
codex-config.test.cjs still carried its pre-split weight (127783ms, ~18x the
suite mean), and codex-config-hooks.test.cjs — which now holds the #3245 block
this PR extends with its own #4249 install()-pipeline test — had no entry at
all, so the packer would silently underestimate it at the table's median
weight (roughly a 9x underestimate against its real cost).

trek-e's most recent review flagged a Windows shard timeout in-flight on
codex-config.test.cjs, plausibly aggravated by this PR's own addition to that
file before the rebase moved it. Re-measured both files locally (node --test
--test-reporter=tap, max of 3 runs, matching the table's own max-across-streams
methodology) and patched just these two entries — not a full regeneration,
which would need real multi-lane CI data this session doesn't have access to.

* fix(#4249): register configured-entrypoint-validation tests in the conformance-tier lists

next's platform-conformance-tier classifier (#4591/#4598) landed after this
branch's last rebase, so tests/configured-entrypoint-validation.test.cjs and
tests/codex-config-hooks.test.cjs were never classified, failing lint:ci's
gen-platform-conformance-tier --check and both the Linux and macOS conformance
suites.

* fix(#4249): drop codex-config.test.cjs from the #4733 pinned isolated-set expectation

next's #4733 (landed after this branch's last rebase) replaced the static
ISOLATED_HEAVY_FILES set with a threshold derived live from
tests/test-timings.json, and pins the current derived result in
EXPECTED_ISOLATED_UNIT_FILES for regression coverage. That pinned list still
named codex-config.test.cjs, whose own weight this PR already dropped from
127783ms to 189ms (after splitting its heavy install()-pipeline blocks into
codex-config-hooks.test.cjs) — well under #4733's derived 120000ms bar. The
live-computed set correctly no longer includes it; the pinned expectation is
updated to match.

* fix(#4249): name the rollback consequence in the entrypoint-validation error, and prove Cline's file survives it

trek-e's review flagged two Major gaps: the thrown error read identically
regardless of which of three real outcomes a runtime hit (nothing
persisted / snapshot reverted / config left broken on disk), and no test
proved the disclosed "left on disk, unreverted" case for Cursor/Windsurf/
Kimi/Cline — only Codex's revert path was ever asserted.

assertConfiguredEntrypoints now tags each invalid entry with its actual
consequence, mirrored from docs/how-to/update-gsd.md's existing
rollback-matrix disclosure. A new test drives the same aggregate failure
through Cline (whose own entrypoint is the one that fails) and asserts
its hook file is still on disk afterward.

* fix(#4249): close 4 gaps antigravity's adversarial review found in the entrypoint-validation PR

One review pass (gemini-3.8-flash-high via the antigravity review lane)
against this PR's full diff against next, findings independently verified
against source before fixing:

- Copilot's install() return object was the only one of 6 runtime branches
  missing rollbackInstallerMigrations — reachable now that this PR's own
  aggregate gate runs rollback across every result on any runtime's
  entrypoint failure, not just Copilot's own.
- buildHookCommand's unresolved-bash early return skipped track() entirely,
  so a win32 install with no Git Bash silently produced an unregistered
  .sh hook instead of the 'unresolved-interpreter' validation failure
  configuredEntrypointsForHook's own comment said it would.
- release-tarball-smoke.cjs reported a Cycle 4 install failure under
  SMOKE.INIT_FAILED (Cycle 1's code) instead of the already-existing
  SMOKE.INSTALL_FAILED.
- SCRIPT_PATH_RE excluded whitespace to avoid swallowing a shell command's
  trailing args, which also truncated any configDir containing a space
  (e.g. a real "/Users/John Doe/.claude"), silently zeroing the scan.
  Anchored the match on the already-known configDir prefix instead of a
  generic absolute-path guess: removes the ambiguity outright rather than
  patching the character class, and stays a raw-text scan on purpose (it
  catches a writer that emits a path without registering it — a
  JSON.parse of the expected schema would miss exactly that case).

One suggested finding (test-timings.json "missing" the new test file) was
verified false — that table only holds measured CI timings, populated
after a file's first real run — and one Ponytail suggestion (a
JSON.stringify dedup key) was rejected as it would reintroduce a real, if
narrow, key-collision risk for no benefit.

* fix(#4249): fix fork CI red from a stale changeset pr field and an unquoted docs/ comment

changeset-lint requires pr: to match the PR it runs on (16 on the fork,
not the eventual upstream number) — rehearsal-branch convention already
established earlier in this PR's history.

lint-docs-guard-registration's quote-pairing heuristic doesn't require the
docs/ path itself to be quoted — it flags a file once ANY quote-delimited
span containing "docs/" appears anywhere in it, alongside any real fs read
call. A comment ending "...update-gsd.md's rollback-matrix paragraph"
supplied the closing quote character (the possessive apostrophe) the
heuristic paired with an unrelated single-quoted string earlier in the
file. Reworded to avoid the unquoted apostrophe next to the path.

* chore(#4249): point the changeset pr field back at the upstream PR

Fork rehearsal (PR #16) is green; the real target for this changeset is
upstream PR #4249.

---------

Co-authored-by: Test <test@test.com>
Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-09-16 04:23:53 -04:00
0xdhx
aeac47b95a fix(#4465): bound /gsd:undo commit selection to the phase directory and HEAD (#4472)
* fix(#4465): bound /gsd:undo commit selection to the phase directory and HEAD

`--phase` documented a primary path reading `.planning/.phase-manifest.json`,
but nothing in the repository writes that file, so the documented fallback was
the only reachable path:

    git log --oneline --no-merges --all | grep -E "\(0*${TARGET_PHASE}(-[0-9]+)?\):" | head -50

That selection has no milestone bound and no reachability bound, and it feeds
`git revert --no-commit`. On a project that reuses a phase number it stages
deletion of a previous milestone's files, under a confirmation gate that
displays only `{hash} — {message}` — the one field that carries no milestone
discriminator.

Port the #3995 anchor already live in code-review.md: resolve the phase's own
directory via `find-phase` (which resolves through planningDir, so it is
workstream-correct), take PHASE_START as the first commit adding anything under
it, and select over `PHASE_START^..HEAD`. Drop `--all`. Fail closed when no
anchor resolves rather than widening to a repository-wide search, and report
truncation instead of silently capping at 50.

Also resolve the dead manifest read rather than leaving documented-but-
unreachable behaviour, and hoist dependency_check onto the workstream-resolved
planning root — it read a hardcoded `.planning/ROADMAP.md` and
`.planning/phases/`, which are the wrong tree under an active workstream.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B58zMdMYc3n16mfdqMHMqv

* fix(#4465): close three defects the pre-create adversarial review found

Root-commit off-by-one: `${PHASE_START}..HEAD` EXCLUDES PHASE_START, so when the
phase's first commit is the repository root the selection silently dropped it
and the undo refused legitimate work. The root branch now selects over `HEAD`.

Empty-selection exit status: `grep` exits 1 on no match, and the removed
`| head -50` had been masking that rc. Both selection pipelines now end in
`|| true` so an empty selection reaches the workflow's own Empty check instead
of aborting the block.

Truncation stop was documented for MODE=phase only; MODE=plan could still cap
silently. Both modes now carry it.

Also documents two residuals the review surfaced rather than leaving them
implicit: a revision range is ancestry and not chronology, so a pre-phase side
branch merged in after PHASE_START stays selectable; and the `--diff-filter=A`
anchor does not follow renames, so an archived phase directory under-selects
(reverts too little or refuses, never too much).

Tests: 12 assertions, negative-controlled. A-H and K-L are RED against the
pre-fix workflow; J is RED against the intermediate revision that carried the
off-by-one; I is green in both directions by design.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B58zMdMYc3n16mfdqMHMqv

* chore(#4465): backfill the changeset fragment's pr field

The fragment could not carry `pr:` before the PR existed; both
`scripts/changeset/lint.cjs` and `scripts/lint-docs-required.cjs` require it
and reported `missing_pr` until now. Both are green with it filled in.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B58zMdMYc3n16mfdqMHMqv

* chore(#4465): acknowledge the deliberate growth of undo.md

The emitted-attribution gate flags undo.md growing 11881 -> 17435 bytes. The
growth is the fix: a one-line `git log --all | grep` selection is replaced by
an anchored, HEAD-bounded selection for BOTH modes, each with its own
fail-closed branch and truncation stop, plus three residuals documented next to
the code they qualify rather than left implicit. A workflow document is the
executable contract, so the residuals belong in it.

Emitted-Drift-Ack-Growth: undo.md — replaces a one-line unbounded commit-subject grep with an anchored HEAD-bounded selection in both --phase and --plan, each with a fail-closed branch and a truncation stop, plus three residuals documented in-workflow (#4465)
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B58zMdMYc3n16mfdqMHMqv

* test(#4465): execute undo.md's selection fences against a git fixture

The shipped regression test matched substrings in undo.md's bash fences. A
substring cannot tell a live invocation from a dead one, and this is the
boundary/reachability defect class this repo's own conventions want driven
with limit-1/limit/limit+1 execution proof. So the fences the runtime runs —
sliced out of undo.md by content anchor, never by position — are now replayed
with `bash -c` inside createTempGitProject fixtures against the real
`gsd-tools.cjs`, the same fence-execution shape #2308 and #2352 use.

Ten executed cases: the fixture's own negative control (the retired `--all`
grep over-selects the archived milestone and a dead branch), `--phase` and
`--plan` selecting only the current milestone's HEAD-reachable instance, the
single-milestone selection unchanged, limit-1 (a matching pre-phase commit
excluded, PHASE_START itself included), the root-commit branch selecting over
`HEAD`, fail-closed on an absent phase in both --phase and --plan (empty PHASE_DIR and UNDO_RANGE), the
active workstream's phase directory winning over the root's, and
dependency_check's `planning inspect --pick generated_from.planning_root --raw`
resolving the workstream root, the project root, and the `.planning` fallback.

Skipped on win32 with the #2352 precedent's reason: the fences are POSIX bash
driven through `bash -c`; the shape half still runs there.

Negative-controlled against the pre-fix undo.md (upstream/next): 11 of 12
shape assertions red, and the executed block fails at fence extraction.

Shape test L now pins the >50 refusal message in both modes, not only its
heading — the cross-AI round review removed the paragraphs under intact
headings and L stayed green; it now fails on that mutation.

* fix(#4465): refuse an archived-milestone PHASE_DIR in both undo modes

`find-phase` searches the live `phases/` directory first, then every
`milestones/v<X.Y>-phases/` directory in ascending version order, and its
ambiguity check is scoped to one directory: the `matches.length > 1` test sits
inside `cmdFindPhase`'s per-`searchDir` loop (`src/phase.cts`). A phase number
that is not live therefore resolves silently to the OLDEST archived milestone
carrying one, with no warning.

Anchoring there is wrong in both directions at once. The oldest commit adding
that path is the archival move, so the phase's real work predates the window
and falls outside it, while the window runs forward from that archival through
every later milestone -- where the subject grep matches THEIR same-numbered
phase. Driven on a two-archived-milestone fixture, `--phase 03` selected v2.0's
`feat(03-01): add search index` and `docs(03-01): v2.0 phase plan` and excluded
v1.0's own `feat(03-01): implement auth endpoint`. On `git revert --no-commit`
that is the cross-milestone contamination this PR exists to close, recurring.

Both modes now blank PHASE_DIR on an archived resolution and refuse with their
own message, so the existing fail-closed rule stays load-bearing even if the
refusal's prose is not honored.

The "archived or renamed phase directory under-selects" residual claimed this
failure could revert "too little or refuse, never too much". That was wrong in
the direction that matters; it is rewritten to cover renames only, and the
archival case is recorded as refused rather than disclosed.

Tests: a two-archived-milestone fixture, a negative control asserting the
unguarded window selects v2.0's two commits and none of v1.0's, refusals in
both --phase and --plan, and an inertness check on a live resolution.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016gyGdweAdAG6nFv9Jx32vj

* docs(#4465): close the three Minor review items on undo.md and its test

Purpose line: it still advertised rolling back "using the phase manifest",
the exact `.planning/.phase-manifest.json` mechanism this PR removes. Test B
already reads the whole file, so scope is not why it missed this -- B greps the
hyphenated `phase-manifest` token, the filename, while the purpose line named
the same dead mechanism in prose. Test N pins the <purpose> block itself, which
is spelling-independent; widening B's pattern to /manifest/i instead would fire
on any future sentence that merely mentions one.

Merge-commit anchors: `git log --diff-filter=A -- "${PHASE_DIR}"` does not walk
merge diffs by default. A directory added on a side branch is still found -- the
side-branch commit that added it is in history -- so the uncovered case is
narrower than "introduced via a merge": it is a directory first appearing in the
merge RESOLUTION. The information is not absent from history, only unrequested:
`git log -m` prints that add once per parent. Recorded as a residual rather than
fixed -- the failure is a refusal, and the evil-merge fixture costs more than a
safe-direction branch is worth.

allow-test-rule marker: suppression is site-scoped, and CONTRIBUTING.md pins the
window at MAX_MARKER_LOOKAHEAD_LINES = 8 with only blanks and comments between.
The file-header marker sat 43 lines above the first `readFileSync` with requires
and a function definition in between, so it was inert for both read sites. Moved
to each site. The markers are belt-and-braces today, and NOT because the rule
ignores `RegExp.test` -- it handles `regex.test(tracked)` explicitly
(no-source-grep.cjs:239, :597-605). Neither read is tracked at all:
`looksLikeSourcePath` (:378-390) admits only .cjs/.cts/.js/.mjs/.mts/.ts and
UNDO_PATH is a .md, and the second site's reader is `readFileNormalized`, which
the rule does not recognise as `readFileSync`. They become load-bearing if
either scope widens.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016gyGdweAdAG6nFv9Jx32vj

* chore(#4465): record the archived-milestone refusal in the changeset

The fragment described the PHASE_START bound and the fail-closed rule but not
the archived-resolution refusal added this round, which is a user-visible
behaviour change: `--phase N` on a number that is no longer live now stops
rather than anchoring on an archived directory.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016gyGdweAdAG6nFv9Jx32vj

* docs(#4465): disclose the same-number-and-slug residual in undo.md

The round's own cross-model body audit found this stated in the PR description
and nowhere in the deployed workflow -- which is the half that survives merge,
and the half this PR's whole argument says residuals belong in.

The anchor is the CURRENT path and `--diff-filter=A` does not follow renames, so
a later milestone that re-creates the same literal directory (`03-auth` again,
not merely phase `03` again) makes the oldest add at that path the previous
occupant's. The archived-milestone refusal added this round structurally cannot
reach it: `find-phase` returns the LIVE directory, so nothing is under
`milestones/` to refuse.

Driven -- v1.0 and v2.0 both using `.planning/phases/03-auth`, v1.0 archived in
between: PHASE_DIR resolves live, the guard correctly does not fire, the anchor
is `docs(03-01): v1 plan`, and the selection returns all four v1+v2 phase-03
commits. `code-review.md` carries the same residual on the same anchor, where it
is read-only; on `git revert --no-commit` it is not, so the note points at
`/gsd:undo --last N`.

Documented rather than fixed: following renames across a re-created path needs a
phase identity that a directory name does not carry, which is the same wall
residual 1 hits.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016gyGdweAdAG6nFv9Jx32vj

* fix(#4465): refuse a LIVE phase directory whose name is also archived

Self-found this round, from the cross-model audit of the previous commit: that
commit disclosed same-number-and-slug reuse as a residual and asserted closing it
needed a phase identity a directory name does not carry. The audit refuted the
second half by producing a fix, and it is cheap and safe-direction, so the case
is now refused rather than documented.

`--diff-filter=A` does not follow renames, so a later milestone that re-creates
the same literal directory (`03-auth` again, not merely phase `03` again) anchors
on the EARLIER occupant's add commit and the window opens there. The archived
refusal added earlier in this round structurally cannot reach it: `find-phase`
returns the LIVE directory, so nothing is under `milestones/` to refuse. Driven
before the guard -- v1.0 and v2.0 both at `.planning/phases/03-auth`, v1.0
archived in between: PHASE_DIR resolves live, the archive guard correctly stays
inert, the anchor is `docs(03-01): v1 plan`, and all four v1+v2 phase-03 commits
are selected. That is a previous milestone's work staged for `git revert
--no-commit`.

The guard needs no identity reconstruction: the same basename present under an
archived `milestones/v*-phases/` means the path has been used before, so the
anchor is untrustworthy and both modes refuse with their own message. It fails
toward refusing a legitimate undo of the reusing milestone, which `--last N`
covers; the alternative is reverting the earlier one's commits.

Tests: a reused-slug fixture, a negative control asserting the unguarded window
reaches back into v1.0 (all four commits), refusals in both modes, and an
inertness check on a distinct slug. All three new checks red against the pre-fix
fence.

Also narrows the changeset, which still claimed selection "no longer" reaches a
previous milestone -- true of the archived route, not of this one until now --
and corrects the concurrent-workstreams residual, which claimed the window
removed the previous-milestone class "entirely" while this case remained open.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016gyGdweAdAG6nFv9Jx32vj

* fix(#4465): harden the reused-path refusal against its own false positives

The cross-model audit of the previous commit refuted four of its claims. All
four were right; this closes them.

A REAL BUG: the refusal message interpolated `${PHASE_DIR}` after the fence had
already blanked it, so it would have rendered "Phase 03 resolves to , but that
directory name is also archived at ...". The live path is now preserved in
`PHASE_DIR_LIVE` before blanking, and a test pins that it survives.

THREE FALSE-REFUSAL ROUTES, each of which could block a legitimate undo:

- `[ -e ]` accepted a regular FILE where an archived phase directory would sit.
  The evidence the refusal claims is "an earlier milestone used this path", and
  only a directory is that. Now `[ -d ]`.
- The glob `v*-phases` accepted milestone directory names `cmdFindPhase` itself
  rejects -- its filter is /^v\d+.*-phases$/, so `vnondigit-phases` is not a
  milestone it would ever resolve. Refusing over one is refusing on evidence the
  producer discards. Now `v[0-9]*-phases`, in the collision check and in the
  archived-resolution guard alike.
- `${PHASE_DIR%/phases/*}` silently left the path unchanged when it carried no
  `/phases/` segment, so the scan ran against the wrong root and read as clean.
  The strip must now have fired. Outside today's producer contract either way --
  cmdFindPhase's live output always carries `/phases/` -- so this hardens a claim
  rather than fixing a reachable defect, and is stated as such.

The commit message and the changeset both asserted the guard proves the name is
"archived"; before this commit it proved only that some entry existed. Both are
narrowed to what the fence now actually establishes, and the changeset headline
no longer claims more than the anchor plus the two refusals deliver -- residual 2
(a range is ancestry, not chronology) is untouched by either.

Tests: a file-not-directory twin, a malformed `vnondigit-phases` twin, and the
preserved live path. All three red against the pre-hardening fence, along with
shape test M.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016gyGdweAdAG6nFv9Jx32vj

* docs(#4465): disclose what the reused-path scan does not survive

A fifth audit pass refuted three claims in the previous commit. Two are wording,
one is a real fail-open; none is fixed by more shell, so all three are stated.

The wording: `v[0-9]*-phases` was described as MIRRORING cmdFindPhase's
/^v\d+.*-phases$/. It is not equivalent -- the glob's `*` matches a newline where
the regex's `.` does not, so a directory named `v6<newline>-phases` is accepted
here and rejected there. It tracks the filter closely enough to reject the
malformed siblings that motivated it; it does not mirror it, and the comment no
longer says so. The changeset likewise said the twin is "an archived phase
directory", where the check establishes only that a directory of that name exists
under an archived milestone -- narrowed to that.

The fail-open: this collision check is the only fence in undo.md that relies on
pathname expansion (every other one uses `case`, which `set -f` does not affect).
Under a runtime with globbing disabled the scan is skipped silently and a genuine
collision passes; under `shopt -s failglob` a NON-match aborts the fence. Both sit
outside the shell state this workflow assumes throughout, and defending only this
fence while the rest of the file assumes defaults would be inconsistent -- so it
is a documented residual rather than a hardened one.

Also disclosed: the check is conservative at two edges. `[ -d ]` follows symlinks,
and an empty directory of the right name counts, so either can refuse an undo a
stricter ownership test would allow. That direction is the intended one -- refusing
too often costs a `--last N`, refusing too rarely reverts another milestone's work.

No test is added. Asserting behaviour under `set -f` would pin a shell state the
workflow does not otherwise support, and the two conservative edges are the
documented intent rather than defects.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016gyGdweAdAG6nFv9Jx32vj

* chore(#4465): register the new regression test in the conformance-tier list

Round 3's only blocker. The platform-conformance-tier classifier, its generated
registry and the test that asserts the registry is fresh all landed together on
`next` in `bcd99696d` (#4591 / #4598) on 2026-09-10 08:36 -0400 -- a day after
this branch's last push, so the gate did not exist when the branch was last
green. This PR adds a unit-suite test file, the classifier's content scan selects
it, and a list regenerated on `next` without it is therefore stale the moment the
two meet.

(The review cites `0b928fe28c` for that landing. That commit is #4592, four hours
later the same day, and `git diff-tree` shows it touched only
`scripts/ci-test-scope.cjs`, `scripts/gen-platform-conformance-tier.cjs` and
those two files' tests -- not the generated registry at all. The date and the
diagnosis hold either way.)

Regenerated with `node scripts/gen-platform-conformance-tier.cjs --write` on the
rebased tree: one line, 267 -> 268 entries. The `--target macos` list is
unaffected -- it writes a different file, `macos-conformance-tier.generated.cjs`,
and its classifier does not select this test (198, already matching) -- so
`lint:generated-sync`'s second conformance-tier link needed nothing.

**Two different baselines, stated so the counts are not read as one.** CI's
failure on the prior head reads `546 !== 547`, and this commit's diff reads
267 -> 268. Both are correct and they are not the same tree: at the merge commit
`54b0b197f` the committed list held 546 entries, so the classifier wanted 547.
`4d65c248e` (#4641, "narrow the tier to 28.5%") then landed on `next` at
2026-09-11 17:00 -0400 -- after that CI run started at 13:26Z -- and collapsed
the list to 266, with `a2331c01f` taking it to 267. Hence 268 here. The two
547-entry lists are not the same file set: upstream's includes
`tests/execute-phase-decimal-arithmetic.test.cjs`.

Order matters and is worth stating: the registry is derived from the `tests/`
tree, and the base range removed 282 entries from it and added 3 (`git diff
--numstat` reports `3 282`; the familiar 279 is the net shrinkage, not the count
of entries changed). Regenerating before the rebase would have produced a
547-entry list against a base carrying 267, and a three-way `git merge-file`
control over that pair does conflict. Rebase first, regenerate second.

This clears both reds on the prior head, not one. `lint-tests` is the one the
review named; `test (ubuntu-latest, 24, shard 3/3)` is the same staleness seen
through `tests/platform-conformance-tier.test.cjs:278`, which asserts the
committed list is fresh. It was the only failure in 1267 tests on that shard, and
it completed at 13:38:33Z -- five minutes after the review was submitted at
13:33:54Z, which is why the review recorded the ubuntu matrix as green.

Control: removing the added line reds `real tests/ tree classification matches
the committed list` (1 of 55, `267 !== 268`); restoring it gives 55/55.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01R4EJcuDjaaF1QeeT8AxYbj

* test(#4465): pin what find-phase returns for the workstream archive layout

Review round 4 found the archived-phase handling blind to the second archive
layout, milestones/ws-<name>-<date>/phases/, that `workstream complete` writes.
The suite had no fixture for it and its comments described one archive reader
where there are two.

- Names both readers in the resolver-contract comment: find-phase routes to
  cmdFindPhase, which admits only /^v\d+.*-phases$/ under milestones/, while
  the phase locator (listArchiveVersionDirs) also enumerates ws-*.
- Adds a ws-* fixture built the way `workstream complete` builds it (the whole
  workstream dir moved into milestones/ws-feat-<date>/).
- Negative control: a re-created workstream with the same phase slug, run
  without the collision guard, selects the archived generation's commits.
- Pins the actual find-phase contract: a phase living only in a ws-* archive
  resolves to nothing, and nothing is selected.
- Pins that an ordinary deleted plan file inside a live phase is not treated
  as a previous occupant.

runFences gains an explicit env override so a test can activate a workstream
after the leak scrub. Every test here passes on the pre-fix workflow; the
assertions that need the fix land with it in the next commit.

* fix(#4465): refuse a re-created phase path by its history, not an archive-layout glob

Review round 4: the archived-phase handling encoded the archive layout as a
literal `v[0-9]*-phases` glob, while the phase locator owns two layouts. The
second, milestones/ws-<name>-<date>/phases/, is what `workstream complete`
writes.

Driven on the real fences: a workstream `feat` completed into ws-feat-<date>/
and then re-created with the same 03-auth slug resolves to the live path,
the collision glob finds no v*-phases twin, the anchor opens on the archived
generation's first commit, and --phase 03 selects that generation's commits.

The collision check now asks git whether this exact path went EMPTY somewhere
in HEAD's history and came back: `git log -m --no-renames --diff-filter=D`
over PHASE_DIR, then `git ls-tree -d` at each deleting commit to tell a
vacated directory from an ordinary deleted plan file. That answers for every
way a path can be vacated -- the flat archive, the ws-* archive, and a phase
removed and re-added under the same slug, which no layout glob could see --
without a second reader of the layout to keep in sync. The refusal message
now names the commit that vacated the path.

The archived-resolution refusal names both layouts. find-phase (cmdFindPhase)
searches only the flat archives today, so a ws-*-only phase resolves to
nothing and fails closed on the not-found rule; the ws-* arm keeps the refusal
correct if find-phase is ever taught the locator's second layout, and a
stubbed-resolver test pins it for both modes.

The retired glob's shell-state residual (pathname expansion under set -f /
failglob) is gone with it. Its replacement residual is documented in-workflow:
the history check misses a single commit that both moves the directory away
and re-creates it, and over-refuses when a side branch emptied it and the
merge kept it.

* fix(#4465): run undo's path-scoped git calls from the project root find-phase answers against

Found by this round's pre-push review. find-phase prints PHASE_DIR relative
to the PROJECT ROOT -- gsd-tools resolves the root before it dispatches --
while the workflow's shell stays wherever the user invoked /gsd:undo. A git
pathspec is read relative to git's cwd, so from a subdirectory every
PHASE_DIR-scoped call looked in the wrong place:

- the anchor (`git log --diff-filter=A`) came back empty, so a legitimate
  --phase or --plan undo was refused. Fail-closed, but a refusal of valid
  work, and it dates from round 1;
- the collision check's `git log --diff-filter=D` came back empty, so a
  re-created path was never recognised. The anchor failing too is the only
  reason this did not over-select.

Both modes now take PROJECT_ROOT from `planning inspect --pick
generated_from.cwd` -- the directory find-phase itself resolved against --
and run the three path-scoped calls as `git -C "${PROJECT_ROOT:-.}"`. The
project root, not `git rev-parse --show-toplevel`: a project need not sit at
the top of its repository, and a control test pins that choice. Selection,
revert and rev-parse calls are SHA-only and unchanged.

Tests: every behavioural test ran from the fixture root, where the two
readings coincide. New ones run the fences from sub/dir -- normal selection
in both modes, refusal of a re-created path for both archive layouts in both
modes, and a dropped plan file NOT refused, which is how a mis-rooted
ls-tree would fail (it lists nothing, and nothing reads as "vacated"). Shape
test O pins every PHASE_DIR-scoped git call to the root. The two tests
renamed in the previous commit are relabelled as false-positive controls:
they pass with the collision check deleted, and say so.

Reversion controls, all driven: the pre-change undo.md fails 7 tests; one
mode's ls-tree mis-rooted fails 3 in either mode; PROJECT_ROOT from
--show-toplevel fails 2.

* fix(#4465): refuse a phase planned in another repository, and never widen a foreign anchor

Found by this round's second pre-push review, against the previous commit.
Running the anchor from the project root is right while the project root
and the caller share a repository. In a `sub_repos` project they do not:
.planning/ lives in a parent repository and the code in child ones, and
from a child findProjectRoot returns the parent. The anchor then came from
the PARENT's history -- a commit the child does not hold. `git rev-parse
"${PHASE_START}^"` failed in the child, the root-commit arm read that as
"no parent", set UNDO_RANGE=HEAD, and selection ran over the child's whole
history. Driven: both child commits selected, including one older than the
phase. Before the previous commit that case resolved no anchor and failed
closed; the previous commit made it destructive.

Two layers, both modes:

- a same-repository refusal in the guard fence: the caller's git directory
  and PROJECT_ROOT's, each physically resolved, must be the same one
  (per-worktree, so a linked worktree compares correctly). A different one
  sets PHASE_DIR_FOREIGN, blanks PHASE_DIR, and the workflow stops with a
  --last N pointer;
- in the anchor: a PHASE_START that is not a commit this repository holds is
  blanked before the root-commit arm. That ambiguity -- "no parent" read as
  "root commit" when it can also mean "not a commit here" -- dates from
  round 1; the previous commit made it reachable.

Shape test O now also pins that PROJECT_ROOT is assigned only from planning
inspect: a rooted call is only as good as the root it is handed, and a later
reassignment passed every spelling check (review, claim 8). Shape test P
pins both layers in both modes.

Correction to the previous commit's message: it said an empty anchor was
the only reason a missed collision could not over-select before that
commit. The review drove a counterexample -- a tracked `.planning` path
coinciding with the caller's subdirectory resolves a wrong, non-empty
anchor -- so that sentence overstated it.

Reversion controls, driven: the previous commit's undo.md fails 3 (P, the
sub_repos refusal, defense in depth); the refusal made inert fails 2 (P and
the refusal; the anchor check alone still keeps the range empty); the
anchor check made inert fails 2 (P and defense in depth; the refusal alone
still refuses). A verbatim negative control shows the pre-hardening
root-commit arm widening the parent's anchor to all of HEAD.

* fix(#4465): compare the repository, not the worktree, and anchor only inside HEAD's history

Found by this round's third pre-push review, against the previous commit.
Its repository gate compared per-worktree git directories. gsd-tools maps
a linked worktree with no .planning/ of its own to the MAIN worktree
(resolveMainWorktreeCwd), so from such a worktree PROJECT_ROOT is the main
checkout: one repository, one object database, two per-worktree git dirs
-- and the gate refused a legitimate undo. It now compares the COMMON git
directory, physically resolved, which is the repository's identity; a
sub_repos child is still a different one and is still refused.

Driving that case showed the anchor check was too weak for it. The anchor
comes from the main worktree's branch history, and nothing guaranteed the
linked HEAD contains it: a linked branch that left main before the phase
started would get a window bounded by a commit outside its own history.
The check is now "PHASE_START is an ancestor of HEAD" (`git merge-base
--is-ancestor`), which subsumes the previous "is a commit here" test -- a
missing object is not an ancestor either -- and changes nothing in the
ordinary case, where the anchor is read from HEAD's own log.

Tests: a linked-worktree fixture (the linked checkout has no .planning/,
which is what makes gsd-tools map it to main; the test asserts the mapping
happened) is allowed in both modes and selects the phase; the same shape
branched before the phase resolves no range. Shape test P pins the
common-dir comparison, forbids --absolute-git-dir, and pins the ancestry
check.

Reversion controls, driven: the previous commit's undo.md fails 3 (P and
both linked-worktree tests); per-worktree git dirs restored fails the same
3; the ancestry check replaced by the previous cat-file test fails 2 (P
and the branched-before test, which then selects a linked commit whose
history never held the phase); no anchor check at all fails 3 (P, defense
in depth, the branched-before test).

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-09-15 01:41:35 -04:00
Tom Boucher
ca8d9d4459 fix(#4429): stop a large commit_types config blocking or bypassing the gate (#4723)
* test(#4429): regression coverage for three defects in the commit hook

Failing-first coverage. Every conforming-subject row is red against the
unfixed hook, and each defect gets an explicit CONTROL row that reconstructs
the pre-fix form and asserts the defect reproduces -- without those, the
passing rows would pass with or without the fix.

1. SIGPIPE (the reported defect). The pre-fix first-line extraction used a
   `head -1` pipeline; once CONFIG_OUT exceeds the 64 KiB pipe buffer printf
   is killed and `set -euo pipefail` aborts the hook. That fix is already on
   next -- it landed incidentally in #4537, whose message never mentions
   #4429 -- and nothing in the tree would notice its removal.

2. regcomp. The commit-type alternation grew with the CONFIGURED list and
   exceeded bash's 64 KiB compiled-pattern cap. Boundary rows pin the cliff
   at 6051/6052, with controls on BOTH sides so limit-1 is not vacuous.

3. Ambient subprocess statuses (found by this change's security review).

Defects 1 and 2 cannot be separated: each configured type adds len+1 bytes to
CONFIG_OUT and len+1 to the alternation, so the smallest payload that
overflows the pipe (N=6059) already puts the alternation past the ceiling.

The SIGPIPE control accepts either SIGPIPE (141, Linux) or a reported write
error (macOS bash 3.2's builtin printf, exit 1). Asserting only the message
would go red on every CI lane, since the remote matrix is Linux-only.

Named to bucket with gsd-validate-commit-crash-policy.test.cjs, which covers
this same hook: lint-test-file-count derives a test's owning module from its
filename prefix, and `validate-commit-*` collided with the `validate` module,
already at its 2-file cap.

Harness note, learned from three vacuous control runs: hooks/lib/git-cmd.js
requires ../gsd-core/bin/lib/token-scanner.cjs relative to the hooks dir's
parent, so a copy in a bare tmpdir fails open and returns 0 for any input.
The layout symlinks gsd-core beside the copy, and every row that can prove it
asserts the run was substantive.

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

* fix(#4429): bound the commit-type regex and isolate subprocess statuses

Two fixes in the same file, both of the same shape: a value computed for one
purpose was being read as authority about something else.

1. The commit-type alternation could not be compiled.

COMMIT_TYPE_ALT joined every CONFIGURED type into one regex, so the pattern
grew without bound. bash caps a compiled pattern at 64 KiB. Bisected on bash
3.2.57 (this repo's macOS target): a 65504-byte alternation compiles, 65515
fails. `[[ =~ ]]` returns 2 on a compile failure, and `if !` cannot tell that
from "the subject does not conform" -- so the hook blocked a valid
`feat(auth): ...` with CONVENTIONAL_COMMITS_VIOLATION while printing `feat`
in its own valid_types.

Match the shape with a fixed-size pattern, capture the type, then test
membership against the COMMIT_TYPES array. The character class is exactly the
`^[a-z][a-z0-9-]*$` safe-token filter the config loader already applies, so it
captures every type that can legally reach COMMIT_TYPES and no token that
cannot. Review verified equivalence over 46 handcrafted plus 6000 randomized
adversarial subjects against a type list containing prefix-overlapping,
digit-bearing and trailing-hyphen types: zero divergences. The loop adds no
subprocess and no pipe, which is the hazard class #4429 is about.
COMMIT_TYPE_ALT is now unused and removed.

  types   pre-fix `feat(auth): ...`   fixed
  10      accept                      accept
  6051    accept                      accept
  6052    BLOCK                       accept
  20000   BLOCK                       accept

2. Subprocess statuses were inherited from the environment.

Each status is captured as `... || VAR=$?`, which assigns ONLY on the failure
branch; on success the variable kept whatever it already held, and
`${VAR:-0}` defaults only when unset or empty. So an EXPORTED CONFIG_STATUS,
CMD_STATUS or CLASSIFY_STATUS -- from a CI wrapper, a .envrc, or another hook
-- survived into the success path and was read as "the subprocess failed".
Since the hook fails OPEN on a genuine subprocess failure by design (#3838),
the result was a silent bypass. Measured: `CLASSIFY_STATUS=3 git commit -m
"nope: bad"` printed "validator disabled for this call" and exited 0.

The three are now initialised before use. The fail-open path is unchanged and
verified byte-identical to origin/next with a failing node.

hooks/dist/ is gitignored and rebuilt from hooks/ by scripts/build-hooks.js,
so there is no second copy to sync.

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

* chore(#4429): register the new suite with the conformance manifests

Both conformance-tier manifests embed the test-file list, so adding a test
file makes them stale. Regenerated with their own generators:

  node scripts/gen-platform-conformance-tier.cjs --write
  node scripts/gen-platform-conformance-tier.cjs --target macos --write

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

* test(#4429): pin both fail-open-prone controls to their named cause

Two rows in the ambient-status block asserted `status === 0`, which the hook
also returns when the harness layout is broken -- so either row could have
passed for entirely the wrong reason. This is the same vacuity trap the rest
of the suite already guards, applied inconsistently to the rows added last.

Measured, rather than reasoned about:

  genuine ambient bypass (pre-fix hook, CLASSIFY_STATUS=3)  rc=0, no CLASSIFIER_THREW
  orphaned layout (no gsd-core symlink)                     rc=0, CLASSIFIER_THREW
  genuine fail-open (node shim exits 3)                     rc=0, no CLASSIFIER_THREW

So assertSubstantive separates the intended cause from the harness failure in
both rows, and each now pins its pass to the cause it names.

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

* test(#4429): stop asserting a macOS-only regex cap on every platform

First verification run was RED: 45636/45638 passed, both failures in this new
suite on linux-node24. Cause is mine -- I measured the compiled-pattern ceiling
on macOS and encoded it as a cross-platform expectation.

Measured in the tester image itself:

  engine                            6051      6052      20000
  bash 3.2.57 / BSD libc (macOS)    compiles  rc 2      rc 2
  bash 5.2.15 / glibc  (Linux)      compiles  compiles  compiles (228943 B)

glibc has no reachable cap, so the regcomp defect cannot occur there and the
control asserting a block at 6052 was red for a behaviour the platform cannot
produce.

The control now calibrates at runtime: it runs the pre-fix form and, when this
engine compiled the alternation, it SKIPS with a message naming the reason
rather than asserting. Skipped out loud, never silently passed -- a green row
there would read as "the defect is covered" on a platform where it cannot
occur. Both branches verified: the capped branch asserts (macOS 17/17, zero
skipped), and the uncapped branch was exercised by forcing the payload to a
size that always compiles, producing a skip and not a failure.

Consequence stated rather than hidden: the remote matrix is Linux-only, so this
one control is skipped in CI and really runs only on a macOS workstation. The
rows that run everywhere are the ones carrying the regression weight -- the
shipped hook accepting a conforming commit at every payload size, the gate
still blocking unknown types, the SIGPIPE control, and all seven ambient-status
rows.

Note this also narrows the coupling claim: SIGPIPE and regcomp are coupled only
on a capped engine. On glibc the SIGPIPE defect is directly testable without
the regcomp fix.

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

* docs(#4429): scope the regex-cap claim to the platform it applies to

The changeset told users the validator "built a regular expression bigger than
bash can compile" past ~6,000 configured types. That is false on Linux: glibc
compiled a 228,943-byte alternation without complaint, so a Linux reader would
have been misled about their own exposure. These are user-facing release notes,
so the claim is now scoped to macOS (bash 3.2 / BSD libc) and says explicitly
that glibc was never affected by this half.

The hook's own comment led with the same overstatement -- "bash caps a compiled
pattern at 64 KiB" -- before qualifying it. Reworded so the first clause states
what is actually true: the limit is a property of the platform's regex engine.

Text only; no behaviour change. Suite 17/17, eslint and lint:ci clean.

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

* chore(#4429): backfill changeset PR number (#4723)

* chore(#4429): backfill changeset PR number (#4723)

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-09-14 05:43:59 -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
sim
9c20b7b40a fix(#4652): use the validated path, collapse the duplication, correct two false claims
Seven findings from the two-axis review, all fixed in place.

THE ONE THAT MATTERS: cmdTodoComplete validated sourcePath and targetPath and
then ran every fs call against the RAW strings — existsSync, statSync,
readFileSync, platformWriteSync, unlinkSync, and the dry-run path payload —
never sourceCheck.resolved / targetCheck.resolved. That is the exact
"validate one path, use another" shape ADR-4650 names as the defect this epic
exists to prevent, and it is the same bug this phase had just fixed in
check-command-router. Committed inside the fix for it. All I/O now uses the
resolved paths; user-facing messages still echo the raw filename, never a
resolved absolute path.

A VACUOUS TEST, and the false doc claim it was propping up. The test
"[RED #4327] an absolute path outside the project is rejected" would have
passed with ZERO containment logic: path.join(pendingDir, '/abs/outside/x')
yields <pendingDir>/abs/outside/x — Node does not let a later absolute segment
escape — so the name is FOLDED under the root, passes containment, and simply
404s. The test only ever observed "Todo not found". It now asserts what is
actually true and actually valuable: an absolute name is neutralized, and the
real outside file is not read, not moved, and still present afterward.
docs/CLI-TOOLS.md claimed such a path "is rejected as a usage error", which
was false; it now describes the fold-under-root behavior. Traversal and
embedded separators ARE rejected, and those claims stand.

DUPLICATION THIS EPIC EXISTS TO REMOVE. resolvePath already did
isAbsolute-or-join + validatePath + reject; cmdGapAnalysisPlanPost and
cmdCheckPredicate each re-inlined the identical triplet in the same file. Both
now call resolvePath. Cost, stated rather than hidden: its generic message
replaces the two sites' distinct "phase-dir escapes…" wording. The message
still names the offending input, and one predicate with one message is the
point.

SYMLINK COVERAGE was required by #4652's "Done when" and was missing. Added
for both the todos root and --phase-dir, skipping cleanly on EPERM so the
Windows lanes do not fail where unprivileged symlink creation is disallowed.

Both fast-check properties were UNSEEDED. Seeded now.

The changeset named "check decision-coverage-plan" as a boundary; that is a
caller of the shared resolvePath, which the body never mentioned. Corrected.

DISCLOSED, not hidden: ctx.phaseDir is now always the resolved ABSOLUTE path,
so ${PHASE_DIR} interpolation and the "not found in <targetDir>" message show
an absolute value where a relative --phase-dir previously produced a relative
one. That is an observable output change. A test pins it and
docs/reference/gate-predicates.md states it.

Also regenerated scripts/lib/platform-conformance-tier.generated.cjs and its
macos twin — the new tests changed check-predicate.test.cjs's tier
classification. Caught by npm run lint:ci locally rather than by a bench run.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-12 09:43:50 -04:00
Tom Boucher
a2331c01f1 fix(#4568): widen the phase-number regex to accept N-segment ids at 6 shell/markdown sites (#4646)
* test(#4568): pin the N-segment phase-grammar defect across all 6 shell/markdown sites

Manually traced against the current tree: the validating regex at
code-review.md rejects a 3-segment id (23.1.2), and execute-plan.md's
extraction truncates a 23.1.2-01-PLAN.md filename down to 1.2-01.

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

* fix(#4568): widen the phase-number regex to accept N-segment ids at all 6 shell/markdown sites

Widens `?` to `*` on the dotted-segment group at all 6 sites (byte-identical
behavior for 1- and 2-segment ids, character class unchanged): code-review.md,
code-review-fix.md, gsd-code-fixer.md, gsd-code-fixer.compact.md (validating
sites, plus their comment/error-message text), execute-plan.md's plan-filename
extraction, and plan-phase.md's --research-phase flag capture.

Also disambiguates the nsegment-phase-grammar test's plan-phase.md anchor,
which was matching an unrelated earlier `--research-phase` occurrence (line
77's generic-value capture) instead of the targeted site (line 131).

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

* chore(#4634): extend lint-phase-id-drift to ban the single-segment phase regex in workflows/ and agents/

Adds findSingleSegmentPhaseRegexDrift, banning the bounded
`[0-9]+(\.[0-9]+)?` shape (and its \d/doubled-backslash near-variants) on any
phase-carrying line across gsd-core/workflows/**/*.md,
gsd-core/references/**/*.md, and the newly-scanned agents/**/*.md, sanctioned
the same way as the existing shell-arith rule. Wired into scanAll; confirmed
zero violations against the real tree post-#4568 fix.

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

* docs(#4568): add Fixed changeset

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

* chore: regenerate conformance-tier manifests for the new test file

The emitted-attribution gate also flags 4 files growing: code-review-fix.md
(+21 bytes), code-review.md (+21 bytes), gsd-code-fixer.compact.md (+9
bytes), gsd-code-fixer.md (+6 bytes). The growth is the fix itself: each
site's validation regex widened from a bounded single-optional-dotted-segment
shape to the unbounded form, and the accompanying comment/error-message text
grew by a few characters to mention the new 3-segment example.

Emitted-Drift-Ack-Growth: code-review-fix.md — widens the phase-number validation regex from a bounded single-dotted-segment shape to accept N-segment ids, and adds a 3-segment example to the comment/error text (#4568)
Emitted-Drift-Ack-Growth: code-review.md — widens the phase-number validation regex from a bounded single-dotted-segment shape to accept N-segment ids, and adds a 3-segment example to the comment/error text (#4568)
Emitted-Drift-Ack-Growth: gsd-code-fixer.compact.md — widens the padded_phase validation regex from a bounded single-dotted-segment shape to accept N-segment ids, and adds a 3-segment example to the error text (#4568)
Emitted-Drift-Ack-Growth: gsd-code-fixer.md — widens the padded_phase validation regex from a bounded single-dotted-segment shape to accept N-segment ids, and adds a 3-segment example to the comment/error text (#4568)
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* chore(#4568): backfill changeset pr number to 4646

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

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-11 17:04:28 -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
db4d8a9bae fix(#4619): execute-phase computes decimal/N-segment phase numbers without breaking shell arithmetic (#4644)
* fix(#4619): execute-phase computes decimal/N-segment phase numbers without breaking shell arithmetic

$((10#${PHASE_NUMBER})) is a hard bash/zsh syntax error when PHASE_NUMBER is
decimal (01.1, from an inserted phase) or N-segment (23.1.2) — neither is
valid shell-arithmetic syntax at all, and the failed expansion aborts the
rest of the snippet in a non-interactive shell. safe_resume_gate runs
unconditionally before trusting STATE.md or dispatching any executor, so
execute-phase failed at its own gate before the first executor on any
decimal phase, regardless of workflow.tdd_mode. Regression from #4194.

Fixes all 4 sites: safe_resume_gate and the TDD gate in
workflows/execute-phase.md, the completion-signal spot-check fallback in
workflows/execute-phase/steps/completion-reconciliation.md, and the
executor gate validation example in references/tdd.md. Each now zero-strips
only the leading integer segment into a *_INT variable (via %%.* / #
parameter expansion — always valid shell syntax regardless of what follows)
and keeps the remainder as an escaped-dot string for the anchored commit-
scope regex, exactly as issue #4619 verified in both bash and zsh. A plain
integer phase (12, 01) computes byte-identically to before.

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

* test(#4619): pin the decimal/N-segment fix and characterize the pre-fix bug

Behavioral coverage via real bash execution: the old $((10#01.1)) form
throws (characterizes the bug, matching the issue's own reproduction); the
new form resolves 01.1 -> 1\.1 and 23.1.2 -> 23\.1\.2, unchanged for plain
integers (12 -> 12, 01 -> 1); the resulting anchored ERE matches
feat(01.1-03):/test(1.1-3): and correctly rejects feat(01-03):,
feat(01.2-03):, feat(011-03):, feat(12-03): for a decimal phase — mirroring
issue #4619's own verified table exactly. Updates
safe-resume-gate-anchoring.test.cjs's 4 existing source-text assertions
(one per site) to the new fixed text.

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

* chore(#4634): refine the shell-arith drift detector to distinguish safe from unsafe arithmetic

With #4619's fix in place, the guard's original "ban $((10#... outright,
match any occurrence" was too blunt: it flagged a comment merely mentioning
the pattern in prose, the now-safe $((10#$PHASE_INT)) arithmetic on an
already-%%.*-stripped integer, and the always-safe plan-id arithmetic
(plan ids are plain integers, never decimal). Refines the detector to skip
full-line comments and to only flag a captured variable/placeholder name
that contains "phase" and does NOT end in _INT/_int — the naming convention
the #4619 fix establishes at all four sites for "already reduced to a safe
integer." A plan-id variable was never phase-number arithmetic in the first
place and is excluded on the same basis.

This closes epic #4634's D6 ("lint-phase-id-drift... passes with no new
exemptions") and D7 ("a decimal and N-segment phase id survive an
end-to-end execute-phase selection without error") for real — the guard now
reports zero violations across all five .cts/.md rules.

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

* chore: regenerate conformance-tier manifests for the new test file

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

* test(#4619): cover the plain-padded-integer near-miss matrix too

Review found the anchored-ERE near-miss coverage only exercised the
decimal case (PHASE_NUMBER=01.1); issue #4619's own worked table also
verifies the plain padded-integer case (01 -> PHASE_N=1) against its own
near-miss set (matches 01-03, rejects 01.1-03/011-03/12-03). Adds the
missing assertion.

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

* docs(#4619): add Fixed changeset

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

* fix(#4619): correct JS backslash-escaping in safe-resume-gate anchoring test

The test's string-literal assertions for the PHASE_FRAC//./\\.} pattern wrote
only 2 backslash characters in JS source, which single-quoted-string parsing
collapses to 1 real backslash at runtime -- but the workflow/reference files
actually contain 2 raw backslash bytes at that position (needed so bash's
${var//pattern/replacement} produces the correct single-backslash output).
Write 4 backslash characters in the JS source at all 4 occurrences so the
runtime string matches the files' real bytes.

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

* chore(#4619): refresh the committed compact-content benchmark baseline

The new PHASE_INT/PHASE_FRAC arithmetic lines added to
gsd-core/workflows/execute-phase.md shifted its committed compaction-ratio
baseline. Regenerate via `node scripts/benchmark-compact-content.cjs --write`.

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

* docs(#4619): note the safe_resume_gate arithmetic growth in the test header

The emitted-attribution gate flags execute-phase.md growing 91253 -> 91846
bytes (593 bytes). The growth is the fix: the safe_resume_gate and TDD RED
block now derive PHASE_INT/PHASE_FRAC before computing PHASE_N, so a
decimal/N-segment phase number (e.g. 01.1, 2.3.1) zero-strips its leading
integer segment via base-10 arithmetic instead of forcing the whole value
through $((10#...)) and hitting a hard shell syntax error on the first dot.

A blank line previously separated the Emitted-Drift-Ack-Growth trailer from
the Co-Authored-By trailer below it, which splits git's trailer-block
detection: only the last contiguous non-blank run of Key: Value lines at the
end of a commit message is recognized as trailers, so the growth ack was
silently read as ordinary body text and the differential-attribution gate
failed with the growth unacknowledged. Joining the two trailers into one
contiguous block fixes it.

Emitted-Drift-Ack-Growth: execute-phase.md — adds PHASE_INT/PHASE_FRAC derivation to the safe_resume_gate and TDD RED commit-scope grep so a decimal/N-segment phase number zero-strips its leading integer segment via base-10 arithmetic instead of failing on a non-numeric value (#4619)
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* test(#4208): replace chmod-based restore-failure injection with a root-proof git shim

`tests/commit-files-deletion.test.cjs`'s two restore-failure tests simulated
an unwritable index via a `post-index-change` hook running `chmod a-w` on
the git dir. That relies on the OS enforcing the *owner's own* permission
bits against itself, which uid 0 (a routine identity inside this repo's
Docker-based gsd-test benches) does not: every DAC check short-circuits true
for root, so the write the chmod meant to block silently succeeds, the
restore comes back clean, and the disclosure/rollback behavior under test
never actually gets exercised.

This is CLAUDE.md's own named anti-pattern for I/O-failure injection
("Cross-platform test IO-failure injection" — chmod tricks fail under root
Docker/CI). It is confirmed as the actual root cause here, not a production
defect: `src/commands.cts`'s `restoreRemovedEntries`/rollback-disclosure
logic (added by #4253, merged just before this run) was hand-traced and
manually reproduced end to end on an unprivileged workstation against a
freshly built `gsd-core/bin/lib/commands.cjs`, and it already produces
exactly the `staging_failed` + "could not be restored" / "could NOT be
restored during rollback" results both tests assert. The other
`post-index-change`-based tests in this file (a `sleep` to force a timeout;
a real `update-index` to flip a restored entry's mode) are unaffected
because neither depends on a permission check — consistent with only the
two chmod-based tests failing on the real remote run.

Replaces the chmod fixture with a fake `git` placed ahead of the real one on
PATH that fails only `update-index --add --cacheinfo` — the one call the
restore makes — unconditionally, regardless of privilege level. Every other
git invocation execs straight through to the real binary, so the rest of
each scenario (`rm --cached`, the restore's own `ls-files` verification,
etc.) is exercised exactly as before.

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

* chore(#4619): backfill changeset pr number to 4644

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

* fix(#4619): feed the bash fixture script via stdin, not argv, to fix Windows CI

Passing the script as a `-c "<script>"` argv element made it subject to
Windows' CreateProcess command-line argument encoding, which silently
dropped the escaped-dot backslashes before bash ever saw them (observed on
PR #4644's windows-latest CI shard: `1\.1` came back as `1.1`). Feeding the
same script via stdin instead removes argv entirely from the transport, so
there is nothing for Windows to re-encode. POSIX behavior is unchanged.

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

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-11 15:47:14 -04:00
Tom Boucher
bcd99696d3 chore(#4591): add platform-conformance-tier classifier + gate CI on it (#4598) 2026-09-10 08:36:13 -04:00