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5842 Commits

Author SHA1 Message Date
Tom Boucher
bbdf7e8e84 chore(#4654): add local/no-unconfined-path-join and drain it to zero — Phase 4 of #4636 (#4674)
* chore(#4654): add local/no-unconfined-path-join and drain it to zero

Phase 4 of epic #4636 — the ratchet, and the phase that makes the epic hold.

THE MEASUREMENT THAT RESHAPED THE PHASE. An AST census (the repo's own parser,
not grep) found what the epic never enumerated: ADR-4650 named seven containment
implementations; `src/` alone held roughly 24 more hand-rolled gates across ~13
files, several guarding a write or an `fs.rmSync`. Two verified by reading rather
than pattern-matching — `research-store.cts` comments its own as "ensure the
resolved file path stays inside the store dir" immediately before a write, and
`capability-lifecycle.cts` gates `fs.rmSync` with one.

So the epic's Done-when "one containment predicate, used at every site" was FALSE
when Phase 3 reported it satisfied. It is true now: the rule is clean across
src/, scripts/, gsd-core/bin/ and hooks/ with an EMPTY allowlist.

WHY NOT THE RULE THE ISSUE PROPOSED. #4654 proposed flagging `path.join` whose
first argument is a managed root and whose later arguments derive from argv. That
is a taint analysis over 2046 call sites, in ESLint, without type information;
"derives from argv" is not locally decidable. Any approximation either floods or
is trivially evaded, and a rule that fires on hundreds of correct sites earns an
allowlist of hundreds — the opposite of a ratchet. What is actually duplicated is
the COMPARISON, not the join, and that has one recognizable shape.

  Arm 1  X.startsWith(Y + sep)            the hand-rolled containment idiom
  Arm 2  a containment predicate called as a bare statement, answer discarded

Arm 2 is the issue's "asserts the result was narrowed, not merely that a helper
was called". Its example `validatePath(x, root).resolved` is already
structurally impossible — Phase 3 un-exported `validatePath` — so the remaining
expressible failure is ignoring the answer, which is the defect that recurred
five times in this epic. The census found exactly one live instance
(`milestone.cts:1643`); it now returns the proven `ContainedPath` so consumers
stop re-deriving the path the comment above it was extracted to stop them
re-deriving.

The rule deliberately does NOT try to catch validate-one-path-use-another where
the answer is used but a different variable flows onward. That needs flow
analysis; the branded `ContainedPath` from Phase 3 is the defense there, and the
two are complementary.

PER-SITE FAMILY CHOICE, NOT A DEFAULT. Phase 3's lesson binds: collapsing a
lexical site onto the realpath family broke four tests and was caught only by the
matrix. Every migrated site was triaged individually. The six
installer-migrations tree-walks and the six capability-lifecycle gates take the
LEXICAL family because their operands are already realpath-resolved and they
deliberately treat the final component as a link; boundary sites take realpath.

TWO SITES WITH AN INVERTED CONTRACT, which a mechanical swap would have broken.
`installer-migrations.cts:127` and `runtime-artifact-install-plan.cts:144` REJECT
`target === root` by contract, while the canonical comparison ACCEPTS it. Swapped
naively, a migration could `rmdir` the user's config root and a third-party
descriptor could write at configHome itself. Both keep `=== root` as an explicit
additional arm alongside the predicate call — the predicate decides containment,
the call site keeps its own extra condition (ADR-4650 decision 6).

ONE DUPLICATE DELETED OUTRIGHT: `planning-inspect.cts`'s `isWithinRoot` was
byte-identical to `isContainedIn` and said so in its own docstring.
`isContainedIn` is now exported for callers that have already resolved both
operands and need only the comparison, with a doc note that a caller which has
NOT resolved them must use a full predicate instead.

THE MARKER, AND WHY IT IS NOT THE ALLOWLIST. Nine sites are justified holdouts and
carry `// allow-handrolled-containment: <reason>` with a mandatory, reviewable
reason. Two justifications: (a) not a containment decision — an ancestor-walk loop
condition, sub-repo grouping, worktree identity matching, declared-path coverage;
(b) it IS containment but the canonical predicate is unreachable —
`capability-validator.cjs` is a committed pre-build `.cjs` and the compiled
`security.cjs` is untracked build output, so requiring it would break a fresh
clone. `scripts/lib/drift-scan.cjs` runs under `lint:ci` with the same exposure.
The marker was renamed from `allow-lexical-prefix-match` mid-phase because that
name asserted only (a) and would have stated something false at the (b) sites.

A marker suppresses BEFORE the violation counter increments, so a file whose
every occurrence is marked still reports `staleAllowlistEntry` — otherwise a
drained entry lingers and silently re-permits the site later.

DEMONSTRATED RED, per #4654: a hand-rolled copy reintroduced into a real `src/`
file made `npm run lint` fail with the rule's full guidance message; removing it
returned the tree to clean. Both halves recorded — red alone proves nothing,
since a rule red for an unrelated reason looks identical.

DISCLOSED: `defaultRequireFromInstallRoot` (gsd-tools.cjs) previously carried two
distinct rejection messages and two manual realpath calls; routing it through
`tryWithinRoot` collapses them to one message, and a missing module now surfaces
as MODULE_NOT_FOUND rather than ENOENT. No test asserts either message. The
security property is preserved and slightly strengthened — the candidate is
realpathed and containment re-checked, and the dangling-symlink oracle closure
comes along with it.

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

* docs(#4654): record the containment ratchet in CONTEXT.md and the security model

Both entries previously described the seam without the thing that keeps it a
seam. They now state what the rule bans, and — more usefully for whoever reads
this next — what it deliberately does NOT attempt: deciding per path.join call
whether an argument came from user input. That question is not locally
decidable, and an approximation across ~2000 join sites would earn an exemption
list of hundreds, which is the opposite of a ratchet.

Also records the marker's two legitimate justifications and that its reason is
mandatory, so the escape stays reviewable rather than becoming a mute button.

Glossary gate 270 refs exit 0; install-tree goldens and CONTEXT-INDEX.json
regenerated and confirmed byte-identical rather than assumed — which also
confirms eslint-rules/ is not a shipped path.

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

* fix(#4654): close review findings and the two matrix failures

MATRIX FAILURE 1 — a collapsed message broke a negative-proof test, and my
evidence for collapsing it was wrong. I searched tests/ for the literal string
"resolves outside its install root", found nothing, and reported that no test
asserted it. The test matches a REGEX SUBSTRING, /outside its install root/, so
the literal search missed it. What broke was "NEGATIVE PROOF: a symlinked module
pointing OUTSIDE the install root is not loaded" — the test guarding the exact
property I claimed was preserved. defaultRequireFromInstallRoot now does both
checks again with both messages byte-identical, each routed through the
canonical predicate, which is better than the original since that hand-rolled
both comparisons.

MATRIX FAILURE 2 — shipped migrations are checksum-locked, and a marker cannot
serve there. migrationChecksum hashes plan.toString(), which INCLUDES comments,
so a suppression marker inside a plan body drifts the baseline exactly as an
edit does. Measured: with markers in place, two of the four still differed from
their committed checksums. The four shipped bodies are now byte-identical to
next, and the rule's config excludes those four paths BY NAME rather than by a
directory wildcard, so a NEW migration is still covered. Six containment
comparisons stay un-ratcheted there; that gap is recorded in the rule's Known
gaps, in CONTEXT.md and in the security model rather than left implicit.
Justification (c) is removed from the marker's documented reasons, because a
marker was proven unable to express it.

ADVERSARIAL REVIEW — the sharpest finding was that the rule banned the CORRECT
shape while permitting the incorrect one: startsWith(root) with no separator is
the genuinely unsafe form, since it accepts a sibling such as root-evil, and my
own test blessed it as valid. Flagging every bare startsWith would swamp the
rule, so that stays a STATED gap rather than a silent one. Closed for real: the
template-literal spelling, which the census never saw because it only inspected
plus-concatenation — that surfaced TWELVE more sites, now triaged and migrated.
A separator reached through a const alias is now resolved via scope analysis.
And isContainedIn, exported in Phase 3, was missing from the discarded-result
set, so a bare no-op call went unflagged on the one function the epic funnels
through.

SECURITY REVIEW — the marker could over-suppress two ways: a block comment
worked identically to a line comment, and one marker silently covered every
violation sharing its line. It now requires a Line comment positioned after the
flagged node ends, so it anchors to the node it trails. Four sites had dropped
an unreachable-but-deliberate equality rejection against the root; each is
restored as the call site's own arm. eslint.config.mjs still documented the OLD
marker token, which my rename missed — it would have sent the next author in
circles.

A FALSE GREEN, recorded because it nearly stuck: lint:ci reported exit 0 from a
stale eslint cache while twelve real violations existed. Every lint check here
now clears the cache first.

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

* fix(#4654): anchor a suppression marker to the violation it actually trails

The matrix caught this; my own test caught it, on its first execution. The case
"two violations on one line: trailing marker suppresses only the one it trails"
expected 1 error and got 0 — both were suppressed.

ROOT CAUSE: the anchoring accepted any Line comment on the node's line whose
range started at or after the node's end. A trailing marker at the END of a line
sits after EVERY node on that line, so that condition held for all of them.
"After the node" does not identify WHICH node the marker trails. The fix reads
as correct and is not.

FIX: deferred reporting. Violations accumulate during traversal instead of being
reported immediately; at Program:exit each marker claims exactly ONE pending
violation — the one on its line whose end is nearest before the marker begins —
and every unclaimed violation is then counted and reported. One marker, one
suppression. An earlier violation sharing the line is still reported, which is
the property the security review asked for and the previous attempt only
appeared to deliver.

The counter now increments at flush time rather than during traversal, so a
suppressed occurrence still does not keep an allowlist entry alive.

AND A TOOL THAT SHOULD HAVE EXISTED BEFORE THE FIRST MATRIX RUN. `node --test`
is hard-blocked here, so this rule's test file could only ever be executed on
the remote matrix — which is why a broken anchoring shipped into a run. ESLint's
programmatic Linter API is not a test runner, and exercising the rule through it
verifies every case locally in seconds. All 24 now pass locally, including the
two-on-one-line case that failed remotely. That loop should have been built
before the rule was first sent to the matrix rather than after it failed twice.

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

* chore(#4654): backfill PR 4674 into the changeset and complete 70-docs.json

The phase gate requires enablementSequence and the Diataxis quadrants; 70-docs
now carries both, with the how-to quadrant skipped for a stated reason rather
than an empty field. The audience for this deliverable is a contributor who
trips the rule, and the task-oriented guidance reaches them in the ESLint
message itself — which names the correct predicate, says how to choose between
the realpath and lexical families, cites the Phase 3 regression caused by
choosing wrong, and gives the marker syntax. A docs/how-to page would be a
second, driftable copy read by nobody at the moment of failure.

enablementSequence is recorded as what it actually is: a VERIFICATION sequence,
not an enablement one. The rule is never off, so there is no off-to-on
transition to describe.

scripts/lint-docs-required.cjs now passes (ok_docs_updated) — it could not
evaluate against the mandated pr:0 placeholder.

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

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-09-12 22:17:46 -04:00
Twisted Fate
6edd506cc7 fix(#4558): report a byte-identical restore destination as already_present (#4599)
* fix(#4558): report a byte-identical restore destination as already_present

restore-custom-files treated a destination that is byte-identical to its
backup exactly like a missing one: plan reported it as `eligible`, --apply
re-copied the same bytes and reported `restored`, and both counters
included it. Because update.md drives its restore question off
eligible_count, the workflow re-offered the same no-op restore on every
update and accepting it never settled anything.

Emit a distinct `already_present` outcome for that case. It is excluded
from eligible_count and restored_count, --apply writes nothing for it,
and the backup is left intact. A differing destination is still
skipped_destination_exists and a missing one still restores normally.

Regression tests cover the identical-destination plan/apply paths, the
idempotence-after-success cycle (missing -> restored -> silent plan), and
a mixed backup. Docs for the outcome enum are updated to match.

* fix(#4558): tighten already_present wording after review

update.md's RESTORE_ELIGIBLE == 0 branch now also names the already-present
case, CLI-TOOLS.md no longer calls the follow-up plan run "silent" (the
entry is still reported, just never offered), and a test message reads
correctly.

* chore(#4558): add changeset fragment for #4599

* chore(#4558): acknowledge update.md growth from the restore-outcome guidance

Emitted-Drift-Ack-Growth: update.md — added already_present restore-outcome guidance for #4558

---------

Co-authored-by: TwistedRiCen <16397953+TwistedRiCen@users.noreply.github.com>
Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-09-13 02:16:40 +00:00
Tom Boucher
d6788a6805 test(#4523): migrate config/env/locking/perf batch to named timeout constants (#4673)
Batch 12 of the ad hoc timeout literal migration (epic #4445). Replaces
every bare numeric timeout/timeoutMs object-literal property in
tests/check-env.test.cjs, tests/config-get-default.test.cjs,
tests/federated-config.test.cjs,
tests/gsd-check-update-worker-platform-gate.test.cjs,
tests/gsd-mcp-server-bin.test.cjs, tests/health-validation.test.cjs,
tests/locking-bugs-1909-1916-1925-1927.test.cjs,
tests/perf-316-state-lock-buffer-alloc.test.cjs,
tests/perf-317-context-monitor-fs.test.cjs, and
tests/pi-config-dir-env-override.test.cjs with a named constant, per
eslint-rules/no-adhoc-timeout-literal.cjs. Removes these 10 files from the
rule's allowlist.

Ground truth via eslint matched the issue's stated 26 sites across 10 files
exactly. Reuses PROBE_TIMEOUT_MS, GENERATOR_SCRIPT_TIMEOUT_MS,
GSD_TOOLS_CLI_MODERATE_TIMEOUT_MS, and INSTALL_TIMEOUT_MS across 4 files.
No new shared constants needed -- every recurring value across files was
independently verified to be a genuinely different operation class, per
this migration's standing rule that numeric coincidence is never identity.
Adds 11 new file-local constants, three of which are not real subprocess
timeouts at all (a config-merge fixture value, and two node:test per-test
timeout options bounding ReDoS/lock-retry regression backstops).

Per the issue's explicit mandate, gsd-check-update-worker-platform-gate.test.cjs
now imports (read-only) NPM_VIEW_TIMEOUT_MS from
gsd-core/bin/check-latest-version.cjs for disclosure -- this file and that
production module once independently guessed the same 15000ms value,
causing the PR #4428 Windows double-SIGKILL collision. No site in this
file's current bare literals actually wraps a live npm-view call needing
margin arithmetic, so the import documents the historical relationship
honestly rather than fabricating a computation. No src/bin file edited
(only a read-only import added), no numeric value changed anywhere.

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-12 21:33:26 -04:00
BeeHiggs
d1d9ee85a5 feat(#4142): thread convention through the completion-path membership seam (#3644)
* feat(#2761): gated heading-intro selection + one bracket identity grammar

Foundation. Two owner-level changes plus a federated convention resolver; no
reader consumes them yet.

1. GATED SELECTION, not an ungated widening.

   Widening every heading matcher requires the claim "no legacy ROADMAP contains
   a `[CODE.MM]` bracket followed by a digit", and that is false:
   `### [RFC.2119] 5:`, `### [v1.0] 2024:`, `### [ADR.612] 3:` and
   `### [ISO.8601] 2026:` are ordinary headings, and a widened reader claims each
   as a phase — moving phase_count and total_phases and adding W006 on projects
   that never opted in. No narrowing rescues it: the premise is about documents
   we do not control.

   `phaseHeadingPrefixSrcFor(baseline, convention, capturing?)` selects the
   pattern SOURCE at construction time. A project whose resolved
   `phase_id_convention` is not exactly 'bracket' compiles the same source string
   it compiled before. `baseline` is explicit because whether a site spells the
   any-bracket prefix or a bare `Phase\s+` is a fact about that site's history:
   handing the wider grammar to a bare site retro-grants tolerance it never had,
   in both directions — warnings appear, and a warning that fires today vanishes.

   Both bracket forms CAPTURE. `[GSD.999] Phase 07:` previously matched through
   the base alternative, which captures nothing, so a reader saw no bracket, fell
   back to the legacy token rule, and counted a labeled icebox heading while
   excluding the label-less one beside it — two derivations of one ROADMAP
   disagreeing.

2. ONE bracket identity grammar, one width rule.

   The milestone width is reconciled with the emit validator: pad2 output, so
   two digits or 3+ with no leading zero. Earlier spellings diverged in both
   directions — admitting `002`, which the validator rejects, and a bare `0` pad2
   never produces — and the section recognizers accepted `[GSD.2]`, which SCOPED
   a milestone no phase heading could then resolve into, recreating the
   on-disk-count fallback this epic removes. An unpadded bracket is now uniformly
   malformed: it scopes nothing, bounds nothing, sections nothing. W005 on its
   directories is the surfacing signal.

   The milestone field is boundary-anchored, so a malformed run cannot match by
   its prefix (`GSD.002-01` read as sentinel `00`). Recognition stays
   case-insensitive because readers compile `/i`, but identity helpers match
   `[A-Z]`, so a captured id is folded first — otherwise `### [gsd.999] 07:`
   failed every sentinel test. The qualified key shares the width, the `(?=-|$)`
   boundary and the single-sub-phase shape of the directory token, because
   phaseTokenMatches returns unconditionally on a qualified hit: a key matching a
   directory isPhaseDirName rejects would be a final wrong answer.

3. resolvePhaseIdConvention federates workstream -> root exactly as
   config-loader does — including that root is a fallback only when a WORKSTREAM
   is active, so a project-scoped directory stands alone. loadConfig cannot serve
   this: it merges against CONFIG_DEFAULTS and drops keys it does not know, and
   this key is not among them. It governs the bracket-selection reads ONLY.

PHASE_HEADING_PREFIX_SRC is left byte-identical: PR-1 shipped it, nothing
consumes it, and it is superseded rather than redefined.

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

* feat(#2761): roadmap.cts selects its heading grammar from the convention

Six matchers build their intro through the gated selector, and
cmdRoadmapAnalyze / cmdRoadmapGetPhase / getRoadmapPhaseWithFallback each
resolve the convention ONCE per command and thread it down.

Three sites take the any-bracket baseline (they already tolerated
`[anything] Phase N`); three take label-only (they spelled a bare `Phase\s+`).
Handing the wider grammar to a label-only site retro-grants tolerance it never
had — and not only by adding matches: on a legacy repo an unchecked
`- [ ] **[v1.0] Phase 05: Thing**` bullet would start SUPPRESSING the W006 that
fires today.

Sentinel handling under bracket ADDS a rule rather than replacing one: a
bracketed heading is a sentinel when its bracket milestone is reserved
(`### [GSD.999] 01:`) OR when its token is, so the engine-wide 0/999 backlog
convention keeps applying to `### [GSD.02] 999:`. Replacing the token rule let a
mid-migration ROADMAP — bracket headings plus a legacy backlog block, exactly
the content this epic targets — add entries to the progress denominator. The
captured id is folded before the identity test, so a lowercase
`### [gsd.999] 07:` is excluded too.

The DIRECTORY read is threaded too. `cmdRoadmapAnalyze` resolves the convention
once and hands it to all four of its heading/checklist patterns, but the single
`phaseTokenMatches` call that decides `disk_status`, `plan_count`,
`summary_count`, `has_context` and `has_research` was left two-argument — so
every canonical `{CODE}.{MM}-{PP}-slug` directory read as `no_directory` with
zero counts, on the PR's own headline verb, while the SAME build resolved those
same directories correctly in three other places on the same repo (W006/W007 via
phaseTokenFromDir, `state json` via the milestone filter, and the W021
milestone-complete read through this very helper's three-argument form). It
failed ONLY for the directory shape the convention exists to name: a
mid-migration bracket repo carrying legacy `01-one` dirs resolved fine, which is
why nothing caught it. Measured, bracket vs its flat-legacy twin:
`[["01","no_directory",0,0],["02","no_directory",0,0]]` against
`[["01","complete",1,1],["02","planned",1,0]]`.

The oracle is the twin, computed in the same test run, plus exact literals —
`grep disk_status tests/adr-612-*` was zero hits before this, so neither the fix
nor a future regression had any gate at all.

Disclosed: a ROADMAP written in bracket form before config.json is switched
reads as empty rather than mis-counted. Silent invisibility during the migration
window is the deliberate trade against claiming phases on projects that never
opted in.

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

* feat(#2761): validate.cts selects its grammar; gated directory recognition

The W006/W007 feeders take the resolved convention as a threaded parameter.
These sites carry the letter-tolerant `[\w][\w.-]*` capture, which makes them
where an ungated widening does the most damage: `### [RFC.2119] 5:` enters
roadmapPhases as a phantom and becomes a W007 "in ROADMAP.md but no directory on
disk" on a project that never opted in.

buildRoadmapPhaseVariants also surfaces the tokens borne ONLY by sentinel-bracket
headings. Surfaced rather than filtered in place because roadmapPhases feeds both
a membership check and a missing-directory warning, and only the latter should
ignore an icebox item.

That set is OCCURRENCE-AWARE, and the subtlety is load-bearing: roadmapPhases is
a TOKEN set, so `[GSD.999] 01` and `[GSD.02] 01` collapse to one entry. Keying
suppression on the token alone let an icebox heading silence a REAL phase that
happens to share its number — a false negative strictly worse than the warning it
removed. A token is suppressed only when no non-sentinel heading bears it.

Directory recognition is added as gated FUNCTIONS beside the exported RegExp
constants, which stay byte-identical: the `{CODE}.{MM}-` prefix is
string-indistinguishable from the letter-prefixed-decimal family this repo
documents as ambiguous, and folding a branch in changes those constants' answers
on exactly that family. A RegExp constant has nowhere to attach a gate.

The recognizer mirrors the emit grammar and delegates the token to the canonical
owner, so recognizer and resolver agree on rejected input as well as accepted.
Both functions throw on a non-string, matching the call pattern they replace.

buildRoadmapPhaseVariants' CHECKLIST scan is capturing, like its heading twin
and like the sibling checklist scan in roadmap.cts, and for the reason that one
states: the bracket id has to ride along or the sentinel filter is blind to
`- [ ] **[GSD.999] 01: Icebox**`. Left un-capturing, the scan called every
checklist token REAL, and the occurrence-aware un-suppression loop then deleted
the icebox token the HEADING scan had correctly marked sentinel — so `validate
consistency` warned that a bracket ICEBOX phase had no directory, in the HOUSE
ROADMAP shape where an icebox appears as both a bold bullet and a detail
heading. `validate health` stayed silent on that same repo, so the two verbs
disagreed — which is the disagreement `sentinelPhases` exists to close.

Both directions are pinned, because the failure mode of a careless fix here is
the opposite one: a real phase sharing a sentinel's token must still warn. It
does, in all four shapes that attack it (sentinel heading + real bullet,
lowercase sentinel, sentinel after the real heading, colon-less bullet).

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

* fix(#2761): count bracket headings, and retire them, in both derivations

Both `total_phases` derivations select their grammar from the resolved
convention, in one commit — cmdStateSync already carries the comment that it
mirrors buildStateFrontmatter "so both report consistent percents (#3242 Bug B)",
so teaching one and not the other ships that divergence.

The #1514 retirement filter widens WITH the counter it protects. The canonical
gesture strikes the checklist BULLET and leaves the detail heading intact, so a
bracket-form retirement went undetected and the phase stayed in the denominator
forever. That is half a fix alone: the retired key is compared against
phaseKeyFromDir, which called extractPhaseToken with no convention. Both halves
land here.

Under bracket the sentinel token rule composes as the full engine set {0, 999},
so this counter agrees with `roadmap analyze`, which has always excluded both —
otherwise the two derivations report different numbers for one ROADMAP and the
changeset's "excluded from every count" is false as written. The LEGACY path
keeps its pre-existing 999-only rule: widening it there would move legacy totals,
so the two stay split off the bracket path exactly as they are today.

The sync-side assertion reads the PERCENT sync writes into the STATE.md body, not
the frontmatter total_phases. Sync's own counter never reaches that field — the
read derivation writes it — so asserting the frontmatter after a sync measures the
read path twice and lets a mutation to the write-path guard survive.

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

* feat(#2761): verify.cts bracket-coherence W021 + selected milestone-complete read

The shipped milestone-prefixed W021 gate keeps its ROOT-only config read,
verbatim base semantics. Federating it silently moved a legacy convention's
answer in BOTH directions on workstream repos — a W021 that fires at base
vanishing, and one that is silent at base firing. resolvePhaseIdConvention
governs the new bracket-selection reads only.

B6, the milestone-complete check, keeps its ungated POSTURE (bug-557 pins it
with an empty config) but selects its grammar from the convention. Inferring
'bracket' from the shape of a matched bracket ran a repo-failing check against a
legacy ROADMAP that merely contained `### [RFC.2119] 5:`. Directory resolution
widens with the heading read, so a bracket repo whose phases are on disk stays
silent, and a bracket sentinel is not reported as unstarted.

checkBracketCoherence is advisory and gated. Anchored to tokenizeHeadings so
fenced examples cannot warn and heading level is structural. Its scope rules each
close a way it silently did nothing or fired wrongly: only a genuine MILESTONE
heading opens or closes a section (a `### Notes` used to reset scope and disable
both sub-checks); a legacy `## v3.0` DOES close it; an M-NN or letter-suffixed
phase heading raises missing-bracket and CONTINUES; a bare `#### 2026:` is not a
phase; the full h2-h6 range is processed. Its section recognizer shares the one
milestone width, so an unpadded `### [GSD.3] 05:` can no longer be a phase to the
id grammar and a section to the section grammar at once, silently re-scoping
every warning after it.

validate consistency suppresses bracket sentinels in its missing-directory
warning — the two verbs disagreed, health suppressing via notStartedPhases while
consistency did not. The legacy reading is untouched, including its pre-existing
wart that `### Phase 999:` still warns there.

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

* fix(#2761): scope the milestone by its bracket; select the disk-side filter

Two roadmap-parser reads, both of which made a bracket project's totals track
the disk instead of the ROADMAP.

The ADR pins the bracket milestone heading as `## [GSD.02] Foundation` — a name,
no version — but scoping matched STATE's `milestone: v2.0` STRING against a
heading, so the canonical form matched nothing and total_phases fell back to the
directory count. The rule was re-derived in THREE places: extractCurrentMilestone
plus two `milestoneBounded` guards; fixing one left the others falling back
regardless, so they are now one gated helper. It matches the CANONICAL padded
spelling only — accepting `0*N` bounded a milestone whose phases were invisible,
which un-suppressed a progress percent computed off an unscoped disk count.

getMilestonePhaseFilter's heading scan becomes the 14th selected read. On a
bracket ROADMAP it collected nothing, so the filter degraded to pass-all and
buildStateFrontmatter counted every other milestone's directories — making the
bracket convention strictly worse than the M-NN one it supersedes on the property
that matters most: totals must track the ROADMAP, not the disk.

The DIRECTORY side of that same filter is selected with it. Teaching only the
heading scan was half a fix and a worse one: `milestonePhaseNums` became
non-empty, so the pass-all degrade stopped firing, but no bracket directory could
satisfy the three legacy dir checks (numericRe fails on `GSD.02-05-five`, the
custom-id match captures the project code `GSD`, and stripProjectCodePrefix does
not strip a dotted prefix). Every bracket directory was rejected, and
completed_phases / total_plans / completed_plans / percent all collapsed to 0
while `state sync` went on writing a percent off the unfiltered disk — `state
json` reporting 0% on the same repo, in the same second, that STATE.md's body
called 67%. That is the #3242 Bug B divergence this PR exists to avoid, and
total_phases could not show it: `Math.max(phaseDirs.length, roadmapPhaseCount)`
floors it at the ROADMAP count no matter how many directories are rejected.

The dir side matches on the milestone-QUALIFIED id, delegated to the owner's
gated `phaseTokenMatches(dir, id, 'bracket')`, not on the bare token: READING-B
puts the milestone in the bracket, so `GSD.01-01-old-one` and `GSD.02-01-one`
share the token `01` and only the qualified key separates them. The qualified ids
are kept in their own set — a hyphen in `milestonePhaseNums` would flip
`roadmapUsesHyphenedIds` and silently move the LEGACY dir path on a bracket repo
— and the branch is ADDITIVE: on a miss it falls through to the three legacy
checks, so a bracket project carrying legacy-shaped directories reads unchanged.

Both are resolved lazily and gated, so the legacy path pays neither a config read
nor a second scan and cannot change answer. The scoping call is also GUARDED:
resolvePhaseIdConvention reaches planningDir, which throws a plain Error for a
GSD_PROJECT/GSD_WORKSTREAM segment carrying `/`, `\` or `..`. At base the only
planningDir call in extractCurrentMilestone sits inside the STATE-read try, so
the function returned normally on such an environment; an unguarded one here let
that escape and broke the never-throws invariant that getRoadmapPhaseInternal and
getMilestoneInfo three hundred lines below carry #2245 / ADR-227 notes about.
Unreachable through the CLI — GSD_WORKSTREAM is rejected up front by the
workstream-name policy and GSD_PROJECT throws identically at base — but reachable
by any in-process embedder, which is precisely who that invariant is for. The
filter's own resolve call was already inside its try and is unaffected.

The milestone-qualified key is formed only for a token that is itself a bracket
phase token. `${bracketId}-${token}` is a string SPLICE, so a mid-migration
heading carrying an M-NN label — `### [GSD.02] Phase 02-01:` — spliced to
`GSD.02-02-01`, which the qualified-key grammar reads as milestone 02 / phase 02:
the `-01` truncated, both such headings collapsing to one key, and the heading
claiming `GSD.02-02-two`, the directory it does NOT name, while rejecting
`GSD.02-01-one`, the one it does. The guard drops those headings back to the
unqualified legacy path, restoring the base ACCEPTANCE VECTOR exactly — pinned
against the milestone-prefixed reading of the same ROADMAP, which is
base-identical on this shape.

Scoped precisely, because the fixture moves one number that the guard does not
touch: `total_phases` on it reads 1 at base and 2 here. That is the bracket
heading COUNT this PR exists to add, not the splice — measured identical with and
without the guard, and identical to what the canonical `### [GSD.02] 01:`
spelling does on the same fixture (both read 2 with zero directories on disk,
where base reads 0). The claim is base-equivalent ACCEPTANCE, not a
base-equivalent reading.

One consequence is stated rather than fixed: a heading whose token carries a
hyphen still puts that hyphen into milestonePhaseNums and so still flips
`roadmapUsesHyphenedIds`. Base does the same for that spelling, so preserving it
is what keeps the shape base-equivalent; excluding the token would have moved
answers versus base on malformed input. The comment at the qualified-set
declaration is corrected to claim only what is true — it keeps QUALIFIED IDS out
of that flag's input, not hyphens in general.

The oracles ship with it, and they are the five numbers, not the one: the parity
gate now asserts total_phases, completed_phases, total_plans, completed_plans AND
percent, on both derivations, on two fixture shapes (one milestone; two
milestones with stale prior-milestone directories on disk). The oracle is the
flat-legacy twin, built in the same test run and compared number for number,
plus exact literals so a shared wrong answer cannot pass.

The oracle SUBSTITUTION is itself pinned. The M-NN spelling of these shapes could
not serve, because buildStateFrontmatter's #2445 de-dup key captures only a
directory's leading integer and collapses `02-01-one` / `02-02-two` /
`02-03-three` to one — measured [3,0,1,0,0] against the flat-legacy twin's
[3,2,3,2,67], identically at base and before this fix, and structurally
unreachable from the bracket key space. That reasoning is only sound while it
stays true, so a characterization test holds the M-NN reading down on the two
numbers that do not depend on which directory wins the mtime race. Widen the
de-dup key and it fails, instead of quietly invalidating the changeset's
disclosure.

Also adds the call-site pin. The structural table pins transcription against the
selector; it cannot see a call site whose BASELINE ARGUMENT is wrong. Flipping
verify.cts's milestone-complete site to the wider baseline grants a
fires-on-every-repo check tolerance it has never had, and every behavioural test
still passed. The pin reads the shipped sources and asserts the mode at each of
the 14 sites, count-exact.

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

* test(#2761): pin the bracket read surfaces in the parity gate

This gate exists because #2043 fixed one bug across five hand-edited copies of a
rule and #2232 was the residual that survived, because a later reader could not
tell the copies were one rule. PR-2 adds two consumers, so they belong here.

Surface 7 — the heading read and the directory read must agree about WHICH phase
a `MM-<seg>` pair names, across the shared width corpus, and the bracket and
legacy spellings of one heading must yield the same token.

Surface 8 — the two bracket directory readers, in BOTH directions. Agreement on
ACCEPTED input was already pinned; agreement on REJECTED input is where they
actually diverged.

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

* chore(#2761): changeset

Disclosures for the PR body (deliberate, not defects):

- phase_id_convention is not a CONFIG_DEFAULTS key, so loadConfig drops it and
  cannot serve as the convention resolver however the file is federated. This PR
  ships its own workstream->root resolver; adding the key and its value enum is
  later-slice work.
- Convention matching is strictly === 'bracket'. A misspelled value reads as
  not-configured and the project keeps legacy behaviour silently.
- An UNPADDED bracket milestone (`[GSD.2]`) is malformed: it scopes nothing,
  bounds nothing, sections nothing, and is not a phase id. W005 on its
  directories is the surfacing signal.
- WIDTH UNIFICATION MOVED FOUR MERGED PR-1 EXPORT ANSWERS on non-canonical
  inputs, none of which toDir can emit and none of which had a bracket caller at
  base:
    isSentinelPhaseId('GSD.0-01',    'bracket')  true  -> false
    isSentinelPhaseId('GSD.0999-01', 'bracket')  true  -> false
    getMilestoneFromPhaseId('GSD.2-01',   'bracket')  'v2.0' -> null
    getMilestoneFromPhaseId('GSD.002-01', 'bracket')  'v2.0' -> null
  The canonical pad2 sentinel spelling `[GSD.00]` still tests true.
- FLAG TO MAINTAINER: docs/adr/612:132 reads "Sentinel behavior (0.x / 999.x ->
  milestone null) is preserved". After the unification that holds for the
  canonical `00` spelling only, not for a bare `[GSD.0]`. ADR wording is yours;
  flagging the tension rather than editing it.
- The bracket sentinel rule COMPOSES with the legacy one — a bracketed heading is
  a sentinel when its bracket milestone OR its token is reserved. Under bracket
  the state-side token rule is the full {0, 999} set so both derivations agree;
  the LEGACY path keeps its pre-existing 999-only rule, unchanged.
- validate consistency's legacy reading is untouched, including the pre-existing
  wart that `### Phase 999:` warns there while validate health suppresses it.
- find-phase still cannot resolve a bracket phase directory. phase-locator.cts is
  outside this PR's module set. Sibling PR #2559's matchPhaseDirs calls
  phaseTokenMatches without a convention, so whichever slice lands second must
  thread it through.
- Four of the five bracket readers scan raw ROADMAP content, so a bracket heading
  inside a fenced code block is read as a phase. Pre-existing for the legacy
  spelling; parity, not a new class.
- roadmapPhaseLookupSources gained no bracket source: nothing emits a
  milestone-qualified query into it yet.
- roadmap validate remains a separate, unfederated convention reader.
  Pre-existing and base-identical, but two verbs can disagree about the active
  convention on one project.
- _diskScanCache keys on cwd while the values it caches are now
  convention-dependent. Not reproducible through the CLI; pre-existing for the
  workstream dimension, widened here. Stated as inconclusive.
- A ROADMAP written in bracket form before config.json is switched reads as empty
  rather than mis-counted — the deliberate migration-window trade.
- THE READ AND WRITE PERCENTS STILL DIVERGE ON A MULTI-MILESTONE REPO, and that
  divergence is MIRRORED under bracket rather than closed. buildStateFrontmatter
  applies the milestone filter; cmdStateSync does its own fs.readdirSync and never
  calls it, so on a repo carrying prior-milestone directories the read path
  reports the SCOPED percent and the sync body reports the WHOLE-DISK one.
  Measured on the true base build (d04592de), flat-legacy spelling, 3 in-scope
  phases with 1 complete plus 2 stale prior-milestone dirs: `state json`
  [3,1,3,1,33], sync body 60%. The bracket twin of that repo now reads the same
  two numbers — 33 and 60. Scoping the sync counter would move every legacy
  repo's percent, which a bracket read-path PR must not do. The gate pins both
  sides, so the mirror cannot silently become a one-sided fix.
- THE PARITY ORACLE IS THE FLAT-LEGACY TWIN, NOT THE M-NN ONE, and that is a
  measurement finding rather than a preference. buildStateFrontmatter's #2445
  de-dup key captures only a directory's LEADING integer, so the M-NN dirs
  `02-01-one` / `02-02-two` / `02-03-three` all key to `2` and two of the three
  are dropped before they are ever counted: base reads [3,0,1,0,0] where the
  flat-legacy twin of the same repo reads [3,2,3,2,67]. Present identically at
  base and at HEAD, untouched here, and structurally unreachable from the bracket
  key space — `GSD.02-01-one` does not match that pattern at all, so every bracket
  directory keys to its own name. The source line already carries a
  `phase-id-owner:` sanction recording the divergence. Mirroring it under bracket
  would mean manufacturing a collision that cannot occur, so the gate compares
  against the flat-legacy spelling, which is uncontaminated. This paragraph is
  itself pinned: a characterization test holds the M-NN reading on the two
  numbers that do not depend on which directory wins the mtime race, so widening
  the de-dup key in a later slice fails the suite rather than silently making
  this disclosure false.
- THE `phaseTokenMatches` CALL-SITE CENSUS, stated so the remaining gaps are
  auditable rather than implied. 13 call sites outside the owner (phase-id.cts).
  THREE are three-argument: verify.cts:2229 (the W021 milestone-complete read,
  already was), roadmap.cts:436 (`roadmap analyze`'s directory lookup, threaded
  by this PR) and roadmap-parser.cts:792 (the disk-side milestone filter, added
  by this PR). The other TEN are two-argument and stay that way — phase.cts ×5
  (220, 277, 444, 585, 1547), phase-locator.cts:62, smart-entry.cts:243,
  init.cts:1414, milestone.cts:551 and verify.cts:2467. All ten are untouched by
  this PR and base-identical.
  One of them sits in a file this PR DOES edit, so it is named rather than left
  to a reader's grep: verify.cts:2467, `verify schema-drift <phase>`. Measured on
  a bracket repo across base / pre-fix branch / this HEAD, all three agree on all
  three argument forms — `verify schema-drift GSD.02-01` and `… 01` both report
  "Phase directory not found" on every build, and `… GSD.02-01-one` resolves on
  every build through the exact-directory-name fallback. So the user-visible
  shape of what stays broken is: a bracket phase is addressable there by full
  directory name only, exactly as at base. Threading the convention into a
  function this PR never touched, in the last round before ship, is the wrong
  trade; it is where the same one-argument fix goes next, alongside
  milestone.cts:551 and init.cts:1414.
- A BRACKET HEADING WHOSE TOKEN CARRIES A HYPHEN (`### [GSD.02] Phase 02-01:`,
  a mid-migration spelling) forms NO milestone-qualified key, and therefore
  scopes through the unqualified legacy path — base-equivalent ACCEPTANCE, which
  is the claim, and not a base-equivalent reading: `total_phases` on that shape
  moves 1 -> 2 for the same reason it moves on the canonical `### [GSD.02] 01:`
  spelling, because counting bracket headings is what this PR does. Such a token
  still flips `roadmapUsesHyphenedIds`, as it also does at base. The comment at
  the qualified-set declaration now claims only that narrower, true thing.

The `pr:` field carries the sub-issue number as a placeholder — it must be
updated to the real PR number when the PR is opened.

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

* chore(#2761): point the changeset at PR #2867

* test(#2761): fast-check properties for the convention-selection layer

CONTRIBUTING.md mandates a generative property test for parser/bijective-contract
changes; PR-2 shipped six example-based files and none. This adds the missing
layer, scoped to what PR-2 actually contracts — WHICH pattern each reader
compiles, decided by the resolved `phase_id_convention` — rather than restating
PR-1's grammar round-trip properties, which already live in
tests/adr-612-bracket-grammar.test.cjs.

Four properties: P1 an opted-in repo reads the ADR-canonical label-less bracket
heading/dir and a non-opted-in repo is byte-blind to the identical input; P2
every non-bracket convention agrees with the hand-transcribed BASE source over
generated content, including bracket-DOTTED legacy prose (`[RFC.2119] 5:`) that
must never be claimed as a phase; P3 nine per-field mutations are rejected and
the one case variation folds instead; P4 both sides of a phase comparison derive
the same key under the same convention.

Generators template every input from raw primitives — nothing is seeded through
renderPhaseId/toDir, the p2() tautology that made #2258 round 1's property test
structurally unable to find B1. Domain reaches past 99 into the 3+-digit branch
(round 2's numArb-capped-at-99 miss), forces sub-phases in at weight, and pins
both sentinel milestones.

Falsified against the COMPILED lib, not the source: five deliberate mutants
(gate never fires; gate always fires; milestone width widened to \d+; the #612
convention forwarding dropped from phaseKeyFromDir; extractPhaseToken's bracket
branch ungated) each fail the specific property that should catch them —
16/2, 16/2, 15/3, 17/1, 17/1 pass/fail — and the lib restores byte-identical.

An earlier draft of P2 held vacuously: its base regex omitted the markdown
furniture the selected one carried, so every realistic `### Phase NN:` line
matched neither side. The gate-always-fires mutant did not kill it. Both are now
compiled through one function, and that mutant kills P2.

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

* test(#2761): adversarial malformed bracket tokens across the tolerant readers

The existing boundary coverage stopped at shapes the emit grammar rejects
(unpadded `[GSD.3]`, wrong-case, `12A`). It never exercised a STRUCTURALLY
broken token — a non-numeric milestone, a bracket that never closes, a bracket
nested in another — which is the input a tolerant reader is most likely to
half-read, and the one the PR's own regex commentary is explicit about.

read-tolerance (roadmap heading scan + validate's dir and variant builders):
ten malformed headings, each asserted to be read as a phase by NO convention and
to give the opted-in repo the same answer as the legacy one; the corpus driven
through `roadmap analyze` end to end; malformed DIRECTORY names asserted
unrecognized and non-throwing on all four conventions; and the two variant
builders asserted to agree, since a widening that reaches only one splits
`validate consistency` from `validate health` (the #3242 Bug B shape).

coherence (verify.cts W021): the same six broken shapes asserted to raise no
W021 of their own AND not to re-scope the W021 that follows them — the G2
failure mode reached from a different shape, where a heading that is not a phase
but IS read as a section silently moves later warnings onto the wrong milestone.

Both files gain a pathological-input time bound. Nested quantifiers over a long
unclosed bracket are the classic ReDoS shape and two commits on next (#2828,
#2944) were CodeQL-flagged for exactly that, so the bound is asserted rather
than argued from reading the pattern. The probes themselves parse no regex.

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

* docs(#2761): document "bracket" as a phase_id_convention value

The row listed only `"milestone-prefixed"` and `null`, so after two shipped
slices (#2258 grammar, this PR's read path) the convention had no documented
enum value. CONFIGURATION.md is also a top-10 historical co-changer of both
src/verify.cts and src/state.cts and was absent from this PR.

The row states the boundary rather than the ambition: `"bracket"` changes the
READ path only, there is no migrator and no emit yet, and a project on any other
value compiles the patterns it compiled before. That keeps the docs honest for
the two releases before PR-3 and PR-4 land, instead of describing a convention a
user cannot yet migrate to.

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

* chore(#2761): retype the changeset Added, drop the docs-exempt marker

`Fixed` was wrong by CONTRIBUTING.md's own definition — a fix restores
documented behavior, and bracket read tolerance is the second slice of a
capability that did not exist before #2258. The type also carried a
`docs-exempt` marker, and `Fixed`/`Security` are exempt from the docs-required
lint, so the typing had the effect of routing around a gate this change should
pass. It now passes it: `lint-docs-required` returns ok_docs_updated on the
CONFIGURATION.md row added in the previous commit.

Body gains one sentence pointing at that row and restating that `"bracket"` is a
read-path opt-in until the migrator and write path land.

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

* test(#2761): pin the version-less bracket milestone scoping gap; narrow the claim

The changeset asserted that milestone scoping "recognises the ADR-canonical
`## [GSD.02] Foundation` heading and applies to the phase DIRECTORIES too." A
CLI probe on that exact heading form falsifies the second half: with no `vN.N`
in the milestone heading the directory side does not scope, and directories from
BOTH the prior and the later milestone are admitted. Measured 4 dirs counted
where the milestone declares 2.

Every bracket fixture in the suite writes `## [GSD.02] v2.0: …`, so nothing
covered the form the ADR actually specifies — and the state.cts doc comment
calls that version-less form canonical.

Mechanism, in extractCurrentMilestone: the bracket scope branch selects the
right currentSection, but `preambleCutoff` keys off a pattern requiring a
version or status emoji, so a version-less roadmap falls back to the current
milestone's own offset and every PRIOR milestone lands in the preamble — whose
phase-stripping regex only strips `Phase N:`-labelled headings, so bracket phase
headings survive it. Independently, `computeSectionEnd` accepts a boundary only
on a version/emoji heading, so the section runs to EOF and every LATER milestone
is swept in. Two sites, bidirectional.

Not fixed here: it changes milestone scoping, which is shared with the legacy
path. Five characterization tests pin today's reading plus a versioned CONTROL
proving the version string is the only difference, and the changeset sentence is
narrowed to what the code does. The DEFECT assertions are written to be
INVERTED by the fix, not deleted — that inversion is its regression proof.

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

* docs(#2761): re-anchor the branch's own cross-file line citations after the rebase

Three of this branch's code comments cite sibling call sites by line number, and
the rebase onto 178ec000 moved two of the three targets:

  roadmap-parser.cts  validate.cts:210 -> :218   (const g = capturing ? 1 : 0)
                      state.cts:1715   -> :1752  (const bg = … 'bracket' ? 1 : 0)
  roadmap.cts         verify.cts:2229  -> :2355  (phaseTokenMatches 3-arg form)

`state.cts:1715` had drifted 37 lines and now lands on the retirement skip, not
the capture-offset idiom the sentence is about — the citation read as evidence
for a claim the cited line does not support.

planning-workspace.cts's `config-loader.cts:618/:649` was checked and is still
correct; left alone.

Comment-only. Build, drift guard and the bracket suites re-run unchanged.

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

* fix(#2761): scope the version-less bracket milestone heading too (B1)

computeSectionEnd and the preambleCutoff scan in extractCurrentMilestone
(roadmap-parser.cts) only recognized a milestone boundary heading that
carried a vN.N token or a status emoji. The ADR-canonical bracket
heading (## [GSD.02] Foundation) carries neither, so on that shape
computeSectionEnd fell through to content.length (sweeping every LATER
milestone into scope) and preambleCutoff fell back to the current
milestone's own offset (leaking every PRIOR milestone's bracket phases
into the preamble, whose Phase-N: strip regex never matches them).

Under the bracket scope branch, both sites now also accept a
`#{1,2}\s+\[CODE.MM\]` boundary, built from phase-id.cts's BRACKET_ID_SRC
(single owner of the bracket-id grammar) rather than a re-typed literal.
`#{1,2}` is the deliberate discriminator: a bracket PHASE heading is
level 3 and shares the same `[CODE.MM]` prefix, so a `#{1,3}` boundary
would swallow it too. Reachable only when bracketScopeConvention ===
'bracket' was already resolved (i.e. the bracket scope branch actually
fired), so version-bearing/emoji headings and non-bracket conventions
take the exact pre-existing code path byte-identically — confirmed by
the full adr-612 suite staying green.

Inverts the four DEFECT assertions in the
"#612 PR-2 CHARACTERIZATION: a version-less bracket milestone does not
scope" describe block (tests/adr-612-bracket-phase-counting.test.cjs)
into their regression-proof form, per the block's own doc comment, and
reframes the describe title/comments accordingly. Corrects the
.changeset/2761-bracket-read-tolerance.md fragment, which described the
directory-side version-less gap as an open, un-closed bound.

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

* fix(#2761): thread sentinelPhases into validate health's W006 loop (B2)

cmdValidateHealth's W006 loop (src/verify.cts) destructured only
roadmapPhases from buildRoadmapPhaseVariants, not sentinelPhases —
unlike cmdValidateConsistency, which already skips sentinelPhases with
the identical guard a few hundred lines up. A heading-only bracket
icebox/pre-milestone entry ([GSD.999] / [GSD.00]) therefore gained a
false W006 "no directory on disk" from validate health while validate
consistency correctly stayed silent on the very same ROADMAP — the two
validators contradicting each other.

Threads sentinelPhases through and skips it before the existsOnDisk
check, mirroring the consistency guard exactly. Gated the same way
sentinelPhases already is (empty unless phase_id_convention is
'bracket'), so a legacy repo's W006 reading — including its own
pre-existing wart where a legacy `### Phase 999:` still warns on both
verbs — is untouched; confirmed by the existing "INHERITED WART,
unchanged" test staying green.

Adds the paired-agreement regression test (#612 PR-2 B2 describe block
in tests/adr-612-bracket-read-tolerance.test.cjs): a sentinel-only
bracket roadmap must produce no missing-directory warning from EITHER
validator, plus a CONTROL proving a real phase with no directory still
warns on both. Confirmed red (health false-W006) against the pre-fix
code before applying the fix.

Corrects the .changeset/2761-bracket-read-tolerance.md fragment, which
described the asymmetry as already closed and in the wrong direction
(it credited validate health with already staying silent, when health
was the one falsely warning).

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

* test(#2761): pin mixed-shape preamble cutoff and boundary heading levels

Closes two self-flagged coverage gaps in the B1 fix (commit 08d5b0c4)
ahead of adversarial review. No src change — all three new tests are
green against the code as committed.

1. earliest-of-either preambleCutoff comparison: only exercised where
   the version/emoji match and the bracket match happen to land on the
   same heading. Adds the mid-migration mixed shape (version-bearing
   PRIOR + version-less CURRENT) and asserts scoping outcomes (accepts
   booleans + total_phases), not internals.

2. `h.level <= 2` conjunct in computeSectionEnd: provably redundant
   whenever the selected milestone heading is level 2 (every existing
   fixture), since `h.level > level` alone already implies it there —
   a mutant deleting the conjunct would have survived every prior test
   in this file. Adds a level-3 CURRENT-heading fixture (with a real
   PRIOR milestone so the preamble side-channel can't independently
   rescue the truncated phases) that makes the conjunct's deletion
   test-visible, confirmed by hand-mutating a throwaway copy of the
   compiled output (never touching tracked src or the real build) and
   observing the assertion flip. Also pins a level-1 companion case
   (#{1,2} tolerance, not just level 2).

NOT included here: the other mixed-shape direction (version-less PRIOR
+ version-bearing CURRENT) turned out to be a genuine, currently-unfixed
gap — reported separately rather than silently patched or weakened, per
instruction not to touch src while a probe run is in flight.

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

* fix(#2761): engage bracket boundaries when the current milestone heading is version-bearing (B3, self-caught)

Found during round-2 self-verification of B1 (commit 08d5b0c4), while
closing the mixed-heading-shape coverage gaps flagged in my own review
notes. The B1 fix resolved `bracketScopeConvention` only inside the
`if (headingMatches.length === 0)` gate that also drives SELECTION's
own bracket fallback (which heading counts as "current"). That gate is
correct for selection, but `bracketScopeConvention` also feeds
computeSectionEnd's and preambleCutoff's boundary detection further
down — which accidentally inherited selection's gate instead of having
its own.

Trigger shape: the CURRENT milestone heading is itself version-bearing
(`## [GSD.02] v2.0: Current Milestone`), so the primary version-string
match succeeds immediately — headingMatches.length !== 0 from the very
first check — and the entire bracket-resolution branch was skipped. A
sibling milestone (PRIOR or LATER) that is version-less then got
neither the version/emoji boundary rule (it has none) nor the bracket
boundary rule (never resolved), reproducing the original #612 defect
(total_phases falling back to the whole-disk count) through a
structural shape B1's own fixtures never exercised — every one of them
is uniformly version-bearing or uniformly version-less across all
three milestones, never mixed with CURRENT specifically being the
version-bearing one.

Fix: resolve `bracketScopeConvention` unconditionally, decoupled from
`headingMatches.length`. SELECTION is deliberately left untouched — the
`if (headingMatches.length === 0 && bracketScopeConvention === 'bracket')`
fallback that picks which heading is "current" keeps its original gate
byte-for-byte (confirmed by diff: that line is unmodified). Only the
convention *resolution* moved out from behind it, so boundary detection
can consult it regardless of which branch selected the heading. The
extra `resolvePhaseIdConvention` call this now costs on every
invocation (previously paid only when the version match found nothing)
is the accepted cost: a non-bracket repo still resolves to something
other than 'bracket' (or null on a poisoned env, caught exactly as
before), so `bracketMilestoneHeadingRe` stays null and every downstream
branch is byte-identical to today — confirmed by the full adr-612 +
roadmap-parser + state + verify + health-validation suite staying green
(1260/1260) and the all-version-bearing/legacy fixtures showing no
behavior change.

TDD: tests/adr-612-bracket-phase-counting.test.cjs describe block
"#612 PR-2 B3: bracket boundaries engage even when CURRENT is
version-bearing but a sibling is not" — 4 tests, confirmed red against
pre-fix code (leak-in booleans true/true, total_phases 4) before this
change, green after.

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

* fix(#2761): reject same-milestone continuation headings as boundaries (B1)

Gate-2 adversarial review Blocker 1: the B1/B3 boundary fired on ANY
#{1,2} `[CODE.MM]` heading, including one bearing the SAME milestone id
as the one currently selected — a version-less checklist/detail split
(`## [GSD.02] Foundation (Phase Details)`, or an ad-hoc continuation
heading) truncated the current milestone's own section instead of
being recognised as a continuation of it. The `(Phase Details)`
re-append only searches VERSION-STRING matches, so a version-less
continuation heading was cut out and never re-appended — a confidently
wrong, non-degraded phase count for a still-incomplete milestone
(repro8 case 1: 1/1/100 instead of 2/1/50; repro5: same, on a fully
version-less roadmap with no sibling milestones at all).

Introduces one shared helper, isBracketMilestoneBoundary(headingText,
level, selectedBracketId), used by both computeSectionEnd and the
preambleCutoff bracket scan, replacing the ungated `h.level <= 2 &&
bracketMilestoneHeadingRe.test(...)` inline check. `selectedBracketId`
(case-folded via phase-id.cts's foldBracketId, matching the branch's
own fold-before-identity convention) is derived from `selected[0]`,
which is the full matched heading line on BOTH selection paths
(version-string and bracket-fallback), so one extraction covers both.

Level cap stays at `level > 2` for now (temporary — ADR-612's content
discriminator replaces it in the next commit); same-milestone rejection
is the change this commit is scoped to.

DEVIATION from the reviewed plan, caught empirically: applying the
same-milestone rejection at the preambleCutoff site (as literally
specified) regressed an existing pin ("boundary heading level: a
level-1 CURRENT milestone heading also scopes correctly") and a
fenced-heading case (repro10 A3) — because preambleCutoff's job is
"where does the earliest milestone-shaped heading sit, scanning from
the TOP of the document," and the selected heading's own occurrence is
always a correct answer to that question regardless of same-id-ness;
rejecting it let the earliest-of-either comparison fall through to a
stray LATER heading instead. `selectedBracketId` is threaded through as
`null` at the preambleCutoff call site for this reason — bracket-shaped
(and, from the next commit, phase-tail) discrimination still applies
uniformly at both sites; only the same-milestone component is
call-site-specific, since it encodes a "keep scanning past this
heading" instruction with no counterpart in a top-of-document search.

Tests: new describe block "#612 PR-2 B1 round-2: a same-milestone
continuation heading is not a boundary" — RED-turned-GREEN fixtures for
repro8 case 1 and repro5, plus PINs for repro8 case 3 (trailing
different-id icebox still terminates) and repro10 A1 (all-version-
bearing + icebox + Phase Details stays exactly 2/1/50 — no double-count
from the same-milestone exclusion interacting with the pre-existing
detailsMatch re-append). syncedTotal()/syncedPercent() assertions
omitted from the repro10 A1 pin: that fixture carries dirs outside the
current milestone, which exposes the SEPARATE Major 1 defect
(cmdStateSync's body percent from an unfiltered disk scan) — asserted
once Major 1 is fixed, not here.

Full suite green (796/796 across the targeted adr-612 + roadmap-parser
+ state files); node scripts/lint-phase-id-drift.cjs clean; eslint
clean on both changed files.

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

* fix(#2761): bracket boundary discriminates by content, not heading level (B2)

Gate-2 adversarial review Blocker 2: three sites disagreed about which
heading levels are a bracket milestone. The selector
(roadmap-parser.cts's bracket-fallback SELECTION branch,
`^#{1,3}\s+\[CODE.MM\]`) and `isMilestoneBounded` (state.cts) both
admit level 1-3, but isBracketMilestoneBoundary's level cap only
admitted level 1-2 (`h.level <= 2`, from the B1 commit). A `###`-level
bracket milestone heading was therefore SELECTED and BOUNDED but never
TERMINATED: computeSectionEnd ran with level=3, a level-3 SIBLING
milestone survived the pre-existing `h.level > level` (not-deeper)
filter, failed the version/emoji test (version-less), then failed
`h.level <= 2` — falling through to `return content.length` and
sweeping the sibling milestone's own phases into the current one.
Reproduces trek-e's original #612 defect verbatim ("a safe degrade
became a confidently-wrong persisted number") on a heading level the
selector and bounding predicate both already admit (repro2 case C:
4/75% instead of 2/100%; mechanism confirmed directly via repro7 —
extractCurrentMilestone returned the whole 214-byte document).

ADR-612 Decision 1 (docs/adr/612-bracket-phase-id-convention.md:56)
specifies the discriminator as CONTENT, not level: "a phase heading is
a bracket followed by a digit-then-colon ([GSD.02] 05:); a milestone
heading is a bracket followed by a name." Replaces the `level > 2`
rejection with BRACKET_PHASE_TAIL_RE — built by interpolating
phase-id.cts's single-owner phaseHeadingPrefixSrcFor(ANY_BRACKET,
'bracket', false) plus the digit + optional-tag + colon tail every
phase-heading counter in this file already spells, not a re-typed
grammar — and widens the level check to a depth-sanity cap of 3
(mirroring the selector's own `#{1,3}` ceiling; NOT itself a
phase/milestone discriminator). Covers the dotted sub-phase heading
form (`[GSD.02] 05.03:`) via the same `[\w][\w.-]*` token, pinned by a
new fixture — the shape where a regex slip in the tail grammar would
hide.

preambleCutoff's own raw-scan regex is widened from `^(#{1,2})` to
`^(#{1,3})` in lockstep: the outer pattern's level ceiling must track
the helper's cap, or a level-3 PRIOR milestone heading is invisible to
that scan and its own phase heading leaks into the preamble
un-stripped (a real double-count this widening closes, verified
against repro2 case C directly).

The existing "boundary heading level: a level-3 CURRENT milestone
heading still scopes correctly" pin (3e562f12) now passes via a
DIFFERENT mechanism than before — its own neighbours are version-
bearing, so it previously passed via the version/emoji rule (the level
cap was never actually exercised by that fixture, per the round-2
review's own finding); with the content discriminator, the SAME
fixture's level-3 phase headings are now correctly excluded because
they are phase-tail-shaped, not because they are too deep. A
deliberate mechanism change, confirmed by re-running that test green
after this commit.

Also updates the "every selector call site declares the right
baseline" governance pin (adr-612-bracket-heading-selection.test.cjs):
BRACKET_PHASE_TAIL_RE is a new, legitimate ANY_BRACKET call site in
roadmap-parser.cts (always passing the literal 'bracket' convention,
since its only caller is already gated on bracketBoundaryActive) —
EXPECTED count bumped 1->2, with a matching BASE_SITES transcription
entry (identical src to every other ANY_BRACKET site, since the
function is pure).

Tests: new describe block "#612 PR-2 B2 round-2: the bracket boundary
is a CONTENT discriminator, not a level cap" — RED-turned-GREEN for
repro2 case C (exact total AND truthful percent, since
isMilestoneBounded already returns true at #{1,3}) and repro7's
mechanism, a PIN for the dotted sub-phase form, and a re-pin of repro8
case 3 (icebox) under the new mechanism.

Full suite green (907/907 across the targeted adr-612 + roadmap-parser
+ state + phase-id files); node scripts/lint-phase-id-drift.cjs clean;
eslint clean on all changed files.

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

* fix(#2761): fence-aware preamble cutoff on the bracket branch (Blocker 3)

Gate-2 adversarial review Blocker 3: preambleCutoff's bracket scan used
a raw content.match/matchAll — blind to fenced code blocks — while its
sibling computeSectionEnd (a few lines above it) already consumed
tokenizeHeadings(content), which strips fences. The two halves of one
boundary semantic disagreed about what a heading is.

A fenced markdown example in the preamble containing a bracket heading
(ADR-612's own docs do exactly this) was textually the earliest
`#{1,3} [CODE.MM]` match: preambleCutoff landed INSIDE the fence,
`preamble = content.slice(0, preambleCutoff)` ended with an unclosed
opener, and the unbalanced fence then blinded
getMilestonePhaseFilter's own tokenizeHeadings(scope) call — every
heading in the returned scope vanished, phaseCount degraded to 0, and
the pass-all filter admitted every directory on disk (repro11's
mechanism, confirmed directly: fence count 1/odd, tokenizeHeadings(scope)
-> only "Roadmap"). Regression vs round-1, which had no bracket pattern
to blind and so fell back to the correct heading (repro12 bracket row:
2/1/50 at round-1, 4/3/75 at HEAD).

Fixed by hoisting one tokenizeHeadings(content) call
(currentMilestoneHeadings) shared by computeSectionEnd and the
preambleCutoff scan, which now iterates that same fence-aware token
list instead of a raw regex. HeadingToken.text is already hash-stripped
and trimmed, so isBracketMilestoneBoundary needs no `^#{1,3}\s+`
re-derivation at this site (that spelling would not match h.text — a
note the round-2 review called out explicitly, confirmed while
porting). selectedBracketId stays `null` here, unchanged from the B1
commit's same-milestone-exclusion reasoning.

DISCLOSED, not fixed (explicitly out of scope per the round-2 review's
own minimal-fix note): the LEGACY (non-bracket) anyMilestonePattern
raw-match path shares the identical fence-blindness hazard and stays
byte-identical — a bracket repo whose preamble has a fenced
VERSION-BEARING heading still has the legacy raw-match win the
earliest-of-either min() (repro12's LEGACY control: 4/3/75, unchanged
across base/round-1/HEAD/this commit). Pinned here so a future reviewer
files this as a known, pre-existing gap rather than a new regression.

Tests: new describe block "#612 PR-2 Blocker 3 round-2: preambleCutoff
is fence-aware (bracket branch only)" — RED-turned-GREEN for repro12's
bracket row and repro11's mechanism (fence balance + non-degraded
phaseCount + correct per-directory admission), a PIN for repro12's
LEGACY control (the disclosed gap, explicitly unchanged), and a PIN for
repro10 A3 (a fenced heading INSIDE the current section must still not
terminate it).

Full suite green (1072/1072 across the targeted adr-612 + roadmap-
parser + state + phase-id + markdown-sectionizer files); node
scripts/lint-phase-id-drift.cjs clean; eslint clean.

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

* fix(#2761): scope cmdStateSync's disk scan by milestone under bracket (Major 1)

Gate-2 adversarial review Major 1: `state sync` wrote a Progress
PERCENT computed from an UNFILTERED whole-disk scan, beside the
milestone-scoped total_phases/completed_phases it writes into the same
STATE.md via the refreshed frontmatter (syncStateFrontmatter ->
buildStateFrontmatter, which has always applied getMilestonePhaseFilter
for the READ path). cmdStateSync's own `fs.readdirSync` chain (the
WRITE-path scan) never called the milestone filter at all, unlike
buildStateFrontmatter's identical-purpose scan. One command therefore
wrote two contradictory numbers into one file: on the ADR-canonical
version-less bracket fixture (4 dirs, 3 complete; asserted milestone =
2 phases, both complete), base wrote total_phases:2/completed_phases:2
(correct, from the READ derivation) alongside body Progress 75% (wrong
— from the unfiltered WRITE derivation; repro3).

Fixed by threading `getMilestonePhaseFilter(cwd)` through the same
`.filter()` chain buildStateFrontmatter already applies, gated on
`syncConvention === 'bracket'` (falling back to a pass-all predicate
otherwise) — so totalDiskPlans/totalDiskSummaries/diskCompletedPhases/
syncTotalPhases become milestone-scoped under bracket, byte-identical
under legacy.

DEVIATION (approved, stated plainly): an earlier phrasing of this fix
called for mirroring buildStateFrontmatter's filter UNCONDITIONALLY.
Implemented GATED instead — an unconditional filter would ALSO move
every LEGACY repo's persisted percent, since the milestone-scoping-vs-
whole-disk divergence this closes is engine-wide, not bracket-specific.
The gate keeps legacy byte-identical, which is the binding constraint:
this is a bracket read-path PR, not a legacy behavior change.

Nit 2 (informational, no code change): 10 calls to
extractCurrentMilestone on a legacy repo cost 10 config.json
existsSync + 10 readFileSync (0 before B3); accepted, unmemoized cost,
unaffected by this commit.

Also folds in two minors from the round-2 review:
- Corrects .changeset/2761-bracket-read-tolerance.md: the sibling-
  exclusion sentence now states it holds at any heading level 1-3 and
  across a milestone split over two headings (true again now that
  Blockers 1 and 2 are fixed); the percent sentence states plainly that
  `state sync`'s body percent is now milestone-scoped under bracket,
  and unaffected under legacy.
- Records the read/write scoping divergence at currentMilestoneRawRanges
  (src/roadmap-parser.cts) in a comment: it did not receive B1/B2's
  bracket boundary fixes, currently harmless (its only consumer falls
  back to whole-content mutation, and every mutation there is still
  Phase-labelled-only, not bracket-widened), but live the moment the
  write path is bracket-widened — flagged so a future PR closes it in
  lockstep with that work, not after.

Tests: 6 pre-existing tests in tests/adr-612-bracket-phase-counting.test.cjs
needed fixture updates, not logic changes — they used the default
single directory (`GSD.02-01-setup`, phase "01"), which the SENTINEL/
retirement/mixed-heading fixtures in those tests never declare as a
real phase (only 04/05/06/999/etc are declared). Before this fix,
cmdStateSync's unfiltered scan counted that off-roadmap directory
anyway; after this fix the milestone filter correctly excludes it,
which for several of these fixtures made `state sync` a no-op (the
computed 0% coincided with STATE.md's initial template default) and
broke `syncedTotal()`/`syncedPercent()`'s ability to observe anything.
Updated each to pass an EXPLICIT directory naming one of the fixture's
REAL declared phases, preserving each test's original numerator/
denominator intent. One test — "shape 2 WRITE" — was substantively
rewritten: it was a CHARACTERIZATION of the Major 1 bug itself ("the
DISCLOSED legacy gap, mirrored — not closed"), and now correctly pins
bracket closing to 33% (agrees with the read path) while legacy stays
at the disclosed 60% (unchanged, deliberately, per the gating decision
above).

Full suite green: `npm test` 1449/1449 (0 fail, 0 skipped, 0 todo,
single-shard "all" run — includes issue-2765-brace-expansion-lockfile
passing); `npm run lint:ci` clean (0 errors; 2 pre-existing timing-
assertion warnings in files this PR does not touch); node
scripts/lint-phase-id-drift.cjs clean; node scripts/changeset/lint.cjs
ok.

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

* fix(#2761): preambleCutoff identity is offset- and child-aware (round-3 Blocker 1)

Gate-2 round-3 re-verify Blocker 1 (NEW): the round-2 B1 deviation
(39c42a89) threaded `selectedBracketId` as the real value at
computeSectionEnd but as bare `null` at the preambleCutoff scan. The
deviation's rationale — "the selected heading's own occurrence is
always a correct earliest answer" — was right, but `null` disables the
same-milestone check for EVERY candidate, not just the selected one.
Any bracket-shaped heading earlier than the selected milestone was
accepted as a boundary regardless of identity: a same-id checklist/
overview heading preceding the version-bearing selected heading (cases
A, B — the version lands on the LATER half of a split, or a plain
overview heading with no "(Phase Details)" spelling), or a DIFFERENT-id
bracket-shaped PROSE heading with no children of its own sitting above
the current milestone's content (case D — `## [ADR.612] Heading
convention used by this roadmap`). In every case the region between
that false boundary and the real sectionStart was silently dropped —
a completed phase vanished and `state sync` persisted a confident 0%
where base and round-1 both correctly wrote 50%. Regression vs base
AND round-1 (not merely "under-fixed", per the round-3 review's own
severity note).

Fixed with two changes, both scoped to the preambleCutoff scan only
(computeSectionEnd already threads the real `selectedBracketId` and is
untouched):

(a) `h.offset === sectionStart` now bypasses BOTH the same-milestone
    check inside isBracketMilestoneBoundary (passing the REAL
    `selectedBracketId` for every other candidate) and the new child
    rule below — the selected heading's own position is definitionally
    the correct answer, so neither discriminator should run against it
    (rejecting it would mean rejecting the heading against ITSELF).
    Closes cases A and B — verified by the reviewer's own one-liner,
    reproduced here.

(b) New `bracketHeadingHasMatchingChild`: an otherwise-accepted
    candidate (bracket-shaped, not phase-tail-shaped, not the same id
    as the selected milestone) must ALSO have a next-strictly-deeper
    heading carrying its OWN bracket id to count as a boundary. This is
    what a genuine sibling milestone has (its own phase children share
    its bracket id — `## [GSD.01] Setup` / `### [GSD.01] 01: …`) and an
    unrelated bracket-shaped prose heading does not. A candidate with
    no such child at all (childless — e.g. an empty prior milestone, or
    one immediately followed by a same-or-shallower heading) degrades
    to NOT a boundary — over-inclusive, the safe direction: its own
    heading text stays in the preamble, contributing nothing to any
    phase count (not phase-shaped). Closes case D, which (a) alone does
    not — verified: without this rule, `[ADR.612]`'s prose heading is
    indistinguishable from a genuine prior sibling at this site.

As a side effect, also neutralizes Nit 2 (a colon-less `[GSD.02] 05`
heading spuriously terminating the preamble): a colon-less bracket
heading is not phase-tail-shaped so isBracketMilestoneBoundary alone
would accept it, but it is — precisely because it is malformed/
incomplete rather than a real milestone — childless, so the child rule
rejects it too. Pinned.

Known interaction with the fence-blind SELECTION path (disclosed by
the reviewer, not introduced here, tracked for the next commit): when
`sectionPattern` selects a FENCED version-bearing heading (an
extremely pathological shape — a fenced example whose text happens to
match STATE's asserted version), no token exists at `sectionStart`, so
the `h.offset === sectionStart` bypass never fires and the loop falls
through to the ordinary same-id / child-rule checks. This composes
with the round-3 Major 1 fix (next commit) rather than introducing a
new defect — SELECTION itself is untouched by any of this — but is
worth stating plainly rather than rediscovering.

Tests: new describe block "#612 PR-2 Blocker 1 round-3: preambleCutoff
identity is offset- and child-aware" — RED-turned-GREEN for cases A, B
(rv-attack1) and D (rv-attack1b) with syncedTotal()/syncedPercent()
assertions (the persisted 0% is the point), a PIN for a genuine prior
sibling with real children (still excluded), a PIN for a childless
prior sibling (degrades to not-cutting, over-inclusive/safe), a PIN
for the colon-less Nit 2 shape, and the reviewer's rv-mech1 mechanism
re-run as a proper test (scope now equals the full input document,
phaseCount 2, both dirs accepted).

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 937/937 pass (930 baseline + 7 new). node
scripts/lint-phase-id-drift.cjs clean; eslint clean on both changed
files.

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

* fix(#2761): fence-aware version/emoji half of preambleCutoff on the bracket branch (round-3 Major 1)

Gate-2 round-3 re-verify Major 1 (NEW): ff6bf0a8 (round-2 Blocker 3)
made the BRACKET half of preambleCutoff's "earliest milestone-shaped
heading" search fence-aware, but left the VERSION/emoji half a raw
`content.match` even on the bracket branch. A fenced VERSION-BEARING
example heading in a bracket repo's preamble (ADR-612's own docs
illustrate the LEGACY heading shape exactly this way, inside a fenced
authoring-guide block) was still textually the earliest match for that
raw regex, winning the min() and un-suppressing a wrong persisted 75%
that base correctly suppressed (rv-attack3c fixture C1: base
suppressed the percent entirely — `isMilestoneBounded` false — HEAD
wrote 75% where truth is 50%).

Fixed by deriving the version/emoji half from the SAME fence-aware
`currentMilestoneHeadings` token list as the bracket half, on the
bracket branch only — the exact `/^Phase\s+\S/i` / `/v\d+\.\d+|✅|📋|🚧/i`
pair `computeSectionEnd` already uses against `h.text`. The non-bracket
(legacy) path is untouched: it keeps the raw `content.match`, byte-
identical to before, including its own fence-blindness (repro12's
LEGACY control, pinned unchanged in the round-2 Blocker-3 test block —
not re-pinned here to avoid duplicating an already-covered assertion).

Not rated Blocker (per the review) because it is not a regression vs
round-1 and the fixture (a version-BEARING fenced example in a bracket
repo) is rarer than the already-fixed bracket-heading case; still
fixed now rather than disclosed, per this arc's own precedent (every
prior "disclose instead of fix" call in this PR has been overturned on
re-review).

Tests: new describe block "#612 PR-2 Major 1 round-3: preambleCutoff's
version/emoji half is fence-aware on the bracket branch" — RED-turned-
GREEN for case C1 (readTotal + syncedPercent, so the persisted 75% is
directly observed, not just the read-path total), PIN for case C2 (the
already-fixed fenced-bracket-heading shape, unchanged).

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 939/939 pass (937 + 2 new). node scripts/lint-phase-id-drift.cjs
clean; eslint clean on both changed files.

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

* chore(#2761): correct changeset claims + mark runtime-gated BASE_SITES row (round-3 minors)

Gate-2 round-3 re-verify Minor 2: three changeset sentences in
.changeset/2761-bracket-read-tolerance.md were overstated in a new
direction after round-2:

- The split-milestone claim ("across a milestone split over two
  headings") was true only when the version-bearing heading came
  FIRST (repro8 case 1); false when it came LATER (round-3 Blocker 1
  case A). Now restated to say plainly "with the version-bearing
  heading in EITHER position" — true again now that round-3's Blocker
  1 fix lands earlier in this range.
- The "counted from the phases... rather than from every directory on
  disk" claim was false on cases A/B/D (a strict subset of the
  milestone's own phases). Restated as "ALL of the phases... not a
  subset", and extended to state that an unrelated bracket-shaped
  heading with no phase children of its own (case D's `[ADR.612]`
  shape) does not truncate the milestone either — true now, not before.
- "Each widened read is SELECTED by the project's phase_id_convention"
  was literally false for BRACKET_PHASE_TAIL_RE, which is RUNTIME-gated
  (via its only caller, isBracketMilestoneBoundary, itself only
  consulted when bracketBoundaryActive) rather than selector-gated.
  Restated behaviourally: "every widened read ENGAGES only when the
  project's resolved phase_id_convention is bracket" — true for both
  gating mechanisms, so it no longer implies a selector call this site
  does not make.

Minor 1: the STRUCTURAL IDENTITY test's BASE_SITES row for
BRACKET_PHASE_TAIL_RE (added in the B2 commit) asserts a property of
`phaseHeadingPrefixSrcFor` — the function — not of the call site; it
would pass unchanged even if the site were deleted. Safety at that
specific site rests entirely on a runtime gate the test cannot see.
Added `runtimeGated: true` to the row and threaded it into the
generated test's own title (`… [runtime-gated, not selector-covered]`),
so the gating mechanism is visible in test OUTPUT, not only in a source
comment that could drift silently.

No production code changed. Targeted suite green (48/48 in the
affected file); `node scripts/changeset/lint.cjs` ok; eslint clean.

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

* fix(#2761): harden round-3 preamble cutoff — subtree child scan + level cap

Team-lead review of f87bba0e found two edges in the round-3 preamble-
cutoff code, both hardened here.

AMENDMENT 1 — bracketHeadingHasMatchingChild (2e06aef5) checked only
`headings[index + 1]`, the IMMEDIATE next heading, not the candidate's
whole subtree. A genuine prior sibling milestone whose section opens
with a non-bracket subsection before its first phase heading
(`## [GSD.01] Setup` / `### Notes` / `### [GSD.01] 01: Old`) was
therefore wrongly rejected as a boundary — its real phase heading sits
TWO headings deep, not one — leaking its entire section into the
preamble unstripped.

CONFIRMED RED, not merely theoretical (built and ran the fixture
against f87bba0e before touching the fix, per instruction): scope
membership DOES drive the disk-side filter on this shape.
`GSD.01-01-old`'s directory was wrongly admitted into the CURRENT
milestone's filter via the leaked heading's qualified key
(`GSD.01-01`) — 3/2/67% where truth is 2/1/50%.

Fixed by scanning the candidate's full SUBTREE: continue past a
non-matching deeper heading instead of returning false on the first
one; only a same-or-shallower heading actually closes the subtree and
yields "no match found". A candidate whose entire subtree closes with
no same-id hit (including a genuinely childless one) still degrades to
`false` — over-inclusive, safe, unchanged from before.

AMENDMENT 2 — c483552a ported the version/emoji half of preambleCutoff
to the token-based scan with no level cap; the raw
`content.match(anyMilestonePattern)` it replaced was anchored
`^#{1,3}\s+`. A level-4+ version-bearing heading in the preamble
(`#### v2.0 notes`) therefore won the scan on the bracket branch where
the raw pattern — and the legacy path, unaffected — ignores it
outright. Fixed with `if (h.level > 3) continue;`, mirroring the
depth-sanity cap isBracketMilestoneBoundary already applies to the
bracket half of this same scan.

Tests: new describe block "#612 PR-2 round-3 hardening: subtree child
scan + level cap on preambleCutoff" —
- RED-turned-GREEN for the Notes-intervening fixture: exact 2/1/50 (was
  3/2/67), plus the disk-filter observable (`GSD.01-01-old` now
  correctly excluded).
- PIN for the level-4 preamble heading: the scope now PRESERVES the
  heading's text (was silently dropped before this fix — harmless in
  this minimal fixture's total_phases specifically, since the dropped
  text carries no phase-shaped content, but a real correctness gap
  against the raw pattern's own ceiling) — asserted via scope content,
  not total_phases, since that number is invariant here either way.
- PIN for the LEGACY control on the same level-4 shape — unchanged,
  confirming the raw content.match path is untouched.

Re-verified the existing genuine-prior-sibling and childless-sibling
pins (round-3 Blocker 1 commit) still pass under the subtree scan —
both fixtures' outcomes are unchanged since their same-id hit (or its
absence) was already at the first deeper heading.

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 942/942 pass (939 + 3 new). node scripts/lint-phase-id-drift.cjs
clean; eslint clean on both changed files. Full `npm test` + `npm run
lint:ci` deferred to the team lead's own run per instruction.

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

* fix(#2761): bracketHeadingHasMatchingChild requires a same-id PHASE child (round-4 Blocker 1)

Gate-2 round-4 re-verify Blocker 1 (NEW): the round-3 hardening's
subtree scan (fbfd0fca) proved SAME-ID-NESS but never asked whether
the matching child was PHASE-shaped. Case F1 re-opens round-3's case D
one heading later: `## [ADR.612] Heading convention` is followed by
its OWN sub-heading `### [ADR.612] Examples` — same bracket id as the
candidate, but MILESTONE-shaped (a name, no digit-then-colon), not a
phase. Same-id-ness alone satisfied the subtree scan and re-cut the
preamble at exactly the shape the round-3 hardening was written to
close.

Failing input: `## [ADR.612] Heading convention` / `### [ADR.612]
Examples` (prose) / `### [GSD.02] 01: One` (the current milestone's
own first phase, now unreachable) / `## [GSD.02] v2.0: Foundation` /
`### [GSD.02] 02: Two`. Truth 2/1/50. HEAD read 1/0/0, and `state sync`
reported "nothing to do" (exit 0, `{synced:true,changes:[]}`) because
its wrong 0% happened to equal the STATE.md seed — a half-done
milestone read as untouched with no write-path signal at all.

Fixed with the reviewer's one-conjunct addition: a same-id child only
counts if it is ALSO phase-tail-shaped (`BRACKET_PHASE_TAIL_RE`) — the
same single-owner discriminator `isBracketMilestoneBoundary` already
uses one level up for the identical distinction (phase vs milestone),
reused here rather than re-derived. This is exactly what the
changeset's own wording already claimed ("no phase children of its
own") — the code now matches the sentence rather than the other way
around.

Docstring updated at the function itself: the rule is "same-id PHASE
child", not "same-id child".

Tests: new describe block "#612 PR-2 round-4 Blocker 1: the same-id
child must be PHASE-shaped" — RED-turned-GREEN for F1 with
syncedTotal()/syncedPercent() (the persisted 0% — and the
report-nothing-to-do write-path silence — is the point), PINs for F11
(colon-less same-id child) and F11b (bullet-only phase list): both
correctly stay excluded either way, and the leak the phase-shape
requirement newly creates for these two shapes is INERT — a colon-less
heading forms no qualified key (getMilestonePhaseFilter's own
phase-heading pattern requires the colon too) and a bracket bullet
never matches the legacy-only BULLET_PHASE_LINE_PATTERN — confirmed
directly via getMilestonePhaseFilter, not merely inferred. Re-verified
the four existing child-rule pins (F2 subtree-closure, F3 deep-nested
same-id, F4 level-4 same-id, F5 childless-at-EOF) are unaffected by the
phase-shape requirement, since every one of them already used a
colon-bearing same-id child.

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 946/946 pass (942 + 4 new). Zero drift measured across the full F1-F12
corpus except F1 itself (F9/F10/F12 remain red, deferred to the
separate Major 1 fix). node scripts/lint-phase-id-drift.cjs clean;
eslint clean on both changed files.

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

* fix(#2761): fence-aware phase counting, milestone bounding, and bracket-fallback selection (round-4 Major 1)

Gate-2 round-4 re-verify Major 1 (NEW): roadmapPhaseCount is a
fence-blind raw `.exec()` over the scope string, duplicated in TWO
independent copies (buildStateFrontmatter's read path, cmdStateSync's
write path). With the bracket alternative now compiled into it (#612),
a fenced EXAMPLE phase heading in the preamble inflates total_phases
and persists a wrong percent that base got right. Two further
fence-blind sites participate: isMilestoneBounded (a raw
`.test(roadmapRaw)`) and the bracket-fallback SELECTOR inside
extractCurrentMilestone (a raw `content.matchAll`, only reachable when
version-string selection finds nothing).

Failing inputs:
- F10 (clean isolate, version-bearing selection): a fenced
  `### [GSD.02] 05: Example phase` in the preamble inflates
  total_phases 2->3, persisting 33% where truth is 50%. LEGACY control
  on the same shape is correct on every build — not a pre-existing
  hazard being inherited, bracket-only.
- F9 (version-less selection): a fenced example carrying the project's
  OWN milestone id additionally confuses the bracket-fallback selector
  (the fenced heading gets SELECTED), compounding with the same
  fence-blind counter. base suppressed the percent; round-1 and HEAD
  both wrote 33%.
- F12 (isMilestoneBounded isolate): the ONLY `[GSD.02]` heading in the
  document is inside a fence, and the asserted milestone genuinely has
  no section at all — HEAD persisted 67% where base correctly
  suppressed the percent (the milestone is absent from the roadmap).

Fixed at the CONSUMER level, not the producer — extractCurrentMilestone's
returned scope string is deliberately UNCHANGED, since every other
consumer of that string needs its full content fidelity and legacy
identity forbids touching the shared string (this branch's own
precedent, ff6bf0a8/c483552a, was producer-level; here the ruling is
consumer-level because the string is shared far more broadly than the
two round-3 fixes' narrower producer edits):

(a) New `countRoadmapPhaseHeadings` (src/state.cts, immediately above
    extractRetiredPhaseNumbers) — ONE shared implementation for both
    call sites, replacing two independently-maintained copies. BRACKET
    convention counts via `tokenizeHeadings(scope)` at levels 2-4,
    testing each heading's hash-stripped text directly — fence-aware by
    construction, since tokenizeHeadings never produces a token for a
    fenced line. LEGACY convention keeps the exact pre-existing raw
    `.exec()` loop, byte-for-byte. A pre-existing, deliberately
    PRESERVED asymmetry between the two original call sites — the read
    path always excluded a bare `/^999\b/` token, the write path never
    did — is threaded through as an explicit
    `includeUnconditional999Check` parameter per call site, so sharing
    the implementation does not silently unify (and thereby move)
    either total.
(b) isMilestoneBounded's bracket branch now scans
    `tokenizeHeadings(roadmapRaw)` for a matching heading (level <= 3)
    instead of a raw regex test. Legacy version-string branch untouched.
(c) The bracket-fallback SELECTOR now builds its candidate set from
    `tokenizeHeadings(content)` instead of `content.matchAll`,
    reconstructing a match-shaped array so every downstream consumer of
    `headingMatches` sees the identical shape the raw-regex path always
    produced. This is the ONE site in this entire arc where SELECTION
    itself changes — selection SEMANTICS are otherwise unchanged (same
    pattern, same first-match-wins by document order); only the
    candidate set is now fence-aware. Pinned that unfenced selection is
    byte-identical.

Zero drift measured across the full historical corpus (repro2-13,
rv-attack1/1b/3c, rv-mech1, rv2-amend1/2, and F1-F11b) except the three
target fixtures.

Tests: new describe block "#612 PR-2 round-4 Major 1: four fence-blind
sites on the bracket path" — RED-turned-GREEN for F10 (with
syncedTotal()/syncedPercent()) and F9 (both layers), PINs for F10's
LEGACY control and F10c (non-phase-shaped fence, unaffected either
way), RED-turned-GREEN for F12 (asserts the percent KEY is absent from
`state json`'s output and that `state sync`'s body stays at its
unmodified seed — the persisted-suppression signal, not merely a
total_phases number), and an explicit PIN that unfenced bracket-fallback
selection (first real milestone-shaped heading wins, no fences
involved) is unaffected.

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 952/952 pass (946 + 6 new). node scripts/lint-phase-id-drift.cjs
clean; eslint clean on all three changed files.

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

* chore(#2761): correct docstring overstatement + stale consumer-count sentence (round-4 minors)

Gate-2 round-4 re-verify Minor 1 + Nit 1. No production code changed.

Minor 1: bracketHeadingHasMatchingChild's own docstring said a
rejected (no-same-id-PHASE-child) candidate's degrade "contributes
nothing to any phase count" — true of the candidate's OWN heading
text, but not of its SUBTREE, which is what actually stays in the
preamble. F7 (`## [GSD.01] Setup` / `### [GSD.07] 01: Foreign`) shows
a DIFFERENT-id bracket PHASE heading inside a rejected candidate's
subtree DOES form a qualified key and CAN admit a foreign directory —
3/2/67%, stable across base, round-1 and HEAD (base via its own
pass-all degrade). Not a regression, still the declared over-inclusive
/ never-under-inclusive safe direction — the comment now says that,
with F7's numbers cited, at the call site that actually decides
`isBoundary` (roadmap-parser.cts's preambleCutoff loop) rather than
only at the helper's own definition.

Minor 2 (changeset) — VERIFIED, no wording change needed: re-ran F1,
F9, F10, F12 at this HEAD. The "no phase children of its own... does
not truncate it either" sentence (naming the `[ADR.612]` shape
directly) is now literally true — F1 reads 2/1/50. The "counted from
ALL of the phases... not a subset" sentence is now true on every
measured shape — F1/F9/F10 all read 2/1/50, F12 correctly suppresses
the percent. No carve-out for F9/F10 is needed since round-4 Major 1
(3be5c412) closes both; per the fix-round instruction to "only carve
out anything genuinely left," nothing is.

Nit 1: tests/adr-612-bracket-heading-selection.test.cjs's runtimeGated
row claimed `BRACKET_HEADING_INTRO_RE` has "no other consumers" — true
when round-3's f87bba0e wrote it, stale since 2e06aef5 (round-3's own
earlier commit) had already added two more uses inside
bracketHeadingHasMatchingChild. Corrected to state the true count
(three consumers) and re-confirm the conclusion is unaffected: all
three are still nested inside the same bracketBoundaryActive runtime
gate, and BRACKET_HEADING_INTRO_RE is built from BRACKET_ID_SRC, not
phaseHeadingPrefixSrcFor, so it was never a selector site regardless of
consumer count.

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 952/952 pass (comment-only changes, no count movement). eslint
clean; node scripts/changeset/lint.cjs ok.

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

* fix(#2761): restore the bracketId guard in countRoadmapPhaseHeadings (round-5 Blocker 1)

Gate-2 round-5 re-verify Blocker 1 (NEW, introduced by 3be5c412): the
merge that created the shared countRoadmapPhaseHeadings helper dropped
the `bracketId && ` guard both original inline loops carried before
calling isSentinelPhaseId. Every other isSentinelPhaseId call site in
src/ (roadmap-parser.cts, roadmap.cts, validate.cts x2, verify.cts)
keeps the guard; state.cts's shared counter was the only one of seven
without it.

When the phase-heading-intro grammar's LEGACY alternative matches (a
`### Phase 00:` heading in a `phase_id_convention: "bracket"` repo —
the mid-migration shape this PR exists for), the bracket capture group
is `undefined`, so the unguarded call became
`isSentinelPhaseId("undefined-00", 'bracket')` — measured TRUE, so
phase 00 (and 000, 0a, 0.5, 999.1 — any token whose splice with the
literal string "undefined" happens to fall in a sentinel range) was
silently dropped from the denominator. `getMilestonePhaseFilter` (which
still carries its own guard) counts the phase and admits its directory
regardless, so the filter and the counter disagree — a half-done
milestone reads as 100% complete, persisted.

One-line fix, restoring the guard every sibling call site already has:

    if (bracketId && isSentinelPhaseId(`${bracketId}-${token}`, 'bracket')) continue;

Line count: `git diff --stat src/state.cts` -> 1 file changed, 1
insertion(+), 1 deletion(-).

Tests: new describe block "#612 PR-2 round-5 Blocker 1:
countRoadmapPhaseHeadings restores the bracketId guard" — RED-turned-
GREEN for G3 (3/2/67, was 2/2/100) and G3d (the mixed bracket+legacy
mid-migration shape, same numbers) with syncedTotal()/syncedPercent(),
PIN for G3's legacy control (unaffected), PIN for G3b (isolates the
counter with no directory to admit), PIN for G3c (legacy 01/02 only,
no sentinel-shaped token present).

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 957/957 pass (952 + 5 new). node scripts/lint-phase-id-drift.cjs
clean; eslint clean.

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

* fix(#2761): extractRetiredPhaseNumbers is fence-aware on the bracket path (round-5 Major 1)

Gate-2 round-5 re-verify Major 1 (NEW) — a FIFTH fence-blind site on
the bracket path, missed by 3be5c412's own enumeration of "four".
extractRetiredPhaseNumbers' line scan (`scope.split(/\r?\n/)`) has no
fence awareness. This PR compiles the bracket alternative into
`introSrc` ("the retirement filter has to widen with the counter it
protects" — the function's own pre-existing comment), so a FENCED
authoring EXAMPLE showing the #1514 retirement gesture in bracket
spelling is now indistinguishable from a real one: it retires a
genuine phase, shrinking the denominator and persisting a confident
100% where base correctly read 50%.

Fixed with the SAME consumer-level ruling this arc has used at every
other fence-blind site, reusing markdown-sectionizer's existing
exported `stripFencedCode` rather than hand-rolling a second fence
parser (single-owner rule) — retirement lines are BULLETS, not
headings, so `tokenizeHeadings` doesn't serve here; `stripFencedCode`
is the general-purpose fence stripper the tokenizer itself is built on.
Gated on `convention === 'bracket'`; the LEGACY line scan stays the raw
`scope` string, byte-identical — its own fenced-example hazard is
pre-existing (wrong at base too) and out of scope.

Line count: `git diff --stat src/state.cts` -> 1 file changed, 9
insertions(+), 2 deletions(-) — one import added, four lines inside
the function (a comment + the `scanScope` computation + the changed
`.split()` call).

Tests: new describe block "#612 PR-2 round-5 Major 1:
extractRetiredPhaseNumbers is fence-aware on the bracket path" —
RED-turned-GREEN for G2 (fenced example in the preamble) and G2b (the
same example placed INSIDE the milestone section, ruling out a
preamble-scoping artifact — the site itself was fence-blind wherever
the fence sits), PIN for the LEGACY control (unchanged, pre-existing,
out of scope — base is wrong on this shape too).

Also folds in the "four fence-blind sites" correction: 3be5c412's
commit message and any restatement of it should read FIVE going
forward; this commit's own message states the count correctly.

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 960/960 pass (957 + 3 new). node scripts/lint-phase-id-drift.cjs
clean; eslint clean.

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

* fix(#2761): state sync's counter excludes the bracket 999 icebox token (round-5 Major 2)

Gate-2 round-5 re-verify Major 2 (NEW) — `includeUnconditional999Check`
left `state json` and `state sync` reporting different totals for one
bracket repo. Under bracket, READING-B puts the sentinel in the
bracket, so `isSentinelPhaseId("GSD.02-999", 'bracket')` is false —
the `/^999\b/` TOKEN rule is the only thing excluding a
`### [GSD.02] 999:` icebox heading, and it ran on the read path
(buildStateFrontmatter, `true`) and on getMilestonePhaseFilter
(unconditional), but not on cmdStateSync's own counter (`false`). One
`state sync` call could leave a single STATE.md with its own
frontmatter (percent 50, from the read-path re-sync inside
writeStateMd) and body (percent 33, from the write-path counter that
alone still counted the icebox heading) disagreeing — falsifying this
PR's own stated invariant that sharing countRoadmapPhaseHeadings made
"the two counters must see the same phases" structural.

Functional change is one argument, exactly as specified: the write
call site now passes `syncConvention === 'bracket'` instead of the
literal `false`. `syncConvention === 'bracket'` is `false` for every
non-bracket value, so the LEGACY path resolves to the exact same
`false` it always did — this file's own pre-existing, deliberately-
unchanged read/write divergence on that path is untouched. The READ
site (`:1860`) is NOT touched — its historical behaviour applied
`/^999\b/` to legacy and bracket alike, so changing it would move
legacy READ totals, exactly the class of mistake this arc's own
Blocker 1 (this round) was.

Line count: the functional change is ONE argument
(`false` -> `syncConvention === 'bracket'`); the surrounding comment
was rewritten because the previous one asserted the now-superseded
behaviour ("preserving this file's pre-existing... divergence... a
bare 999 token is not excluded here") and leaving it would mislead the
next reader — not a structural change.

Tests: new describe block "#612 PR-2 round-5 Major 2: state sync
excludes the bracket 999 icebox token like the read path" —
RED-turned-GREEN for G1, asserting `state sync`'s body percent equals
`state json`'s own percent (both 50, not 33 vs 50), PIN for G1's
legacy control (33 vs 50 unchanged, deliberately).

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 962/962 pass (960 + 2 new). node scripts/lint-phase-id-drift.cjs
clean; eslint clean.

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

* chore(#2761): restore indent parity at the two line-start-anchored bracket-heading reconstructions (round-5 Minor 1)

`HeadingToken.offset` (tokenizeHeadings) is the LINE-START character offset,
not necessarily the `#` character's own offset — a ≤3-space-indented ATX
heading has both. Two round-4 reconstructions built on tokenizeHeadings
inherited this gap and accepted indented headings their raw, line-start-
anchored predecessors (`^#{1,3}\s+\[...`) never matched:

  1. roadmap-parser.cts's bracket-fallback SELECTOR (extractCurrentMilestone,
     ~line 377) — an indented, version-less `[GSD.02]` milestone heading
     could be reconstructed into headingMatches, then mis-parsed downstream
     (selectedBracketId null, level fallback to 1), leaking a SIBLING
     milestone's phases into the counted scope (G6: HEAD read 3/2/67 instead
     of 2/1/50 — a real phase heading's own directory belonging to the NEXT
     milestone got counted).

  2. state.cts's isMilestoneBounded (~line 1571) — the same gap let an
     indented-only `[GSD.02]`-shaped heading wrongly bound a milestone
     absent from the roadmap, un-suppressing a percent that should stay
     suppressed (mirrors round-4's F12 fenced-only case, but via indentation
     instead of a fence).

Fix: one added conjunct per site — `content[h.offset] === '#'` (source-named
`roadmapRaw` in state.cts) — filtering to tokens whose LINE-START offset IS
the `#` character, i.e. exactly the set the raw line-start-anchored regex
would ever have matched. Restores byte-for-byte raw parity; no other logic
in either function changes. computeSectionEnd and the preamble version/
emoji-token scan are untouched, as instructed — they consumed tokenizeHeadings
output before this arc and are out of scope here.

Also corrects roadmap-parser.cts's now-provably-false docstring claim that
`h.offset` is unconditionally "the same `#`-character coordinate space
`content.match().index` used" — true only for the survivors of the new
filter, not for every token tokenizeHeadings produces.

Line count: the FUNCTIONAL change is exactly 2 lines (one added `&&` conjunct
per call site — `git diff --stat` on the two source files shows 20
insertions/7 deletions, but only those 2 lines change behavior; the rest is
docstring/comment rationale, per this round's "state the line count" ask).

TDD: both fixtures verified RED at HEAD before this commit, GREEN after,
via /tmp/pr612rev/rv5-attack.cjs G6 and a locally-authored isMilestoneBounded-
isolating probe (G6 alone doesn't distinguish the two sites — its unindented
phase headings already satisfy isMilestoneBounded's loose prefix regex
either way, so a second, indentation-only fixture was needed to prove that
site's fix is not a no-op; verified by temporarily reverting just that one
conjunct, confirming 100%-wrongly-bounded RED, then restoring it, confirming
suppressed-percent GREEN).

New tests (adr-612-bracket-phase-counting.test.cjs):
  - RED (G6): indented version-less bracket milestone heading — 2/1/50, not
    the pinned-before-fix 3/2/67.
  - PIN (G6c unindented control): identical document, no indent — 2/1/50
    unaffected on every build.
  - RED (isMilestoneBounded site, indented-ONLY): mirrors round-4's F12
    shape (fenced-ONLY → indented-ONLY) — percent stays suppressed instead
    of the pinned-before-fix wrongly-bounded 100%.

Full G1-G10 (rv5-attack.cjs) + G2b/G3c/G3d/G6c (rv5b.cjs) re-verified
zero-drift against TRUTH after this change. Targeted suite (adr-612-*,
roadmap-parser, state, verify): 962 -> 965 (+3), 0 fail.

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

* chore(#2761): changeset discloses counting-set narrowing + correct stale consumer-count sentence (round-5 minors)

FIX 5 (Minor 2): .changeset/2761-bracket-read-tolerance.md did not disclose
that bracket phase-heading counting is narrower than the raw-regex
predecessor in two ways the review's G4/G5 fixtures surfaced: a level-5
heading (`##### [GSD.02] 05: ...`) is no longer counted (the counter's
tokenizeHeadings scan caps at level 4, matching the selector/isMilestoneBounded
ceiling), and a space-less heading (`###[GSD.02] 05: ...`) is no longer
counted (CommonMark requires ≥1 space/tab after the hashes, which
tokenizeHeadings correctly enforces and the old raw regex did not). Both
G4 and G5 moved from round-1's wrong (inflated) values back to base's
original values as an incidental side effect of routing through
tokenizeHeadings — never a deliberate feature of this PR, and previously
undocumented. One clause added to the existing run-on paragraph; no other
wording in the changeset touched.

FIX 6 (Nit 1): tests/adr-612-bracket-heading-selection.test.cjs:76 —
`BRACKET_PHASE_TAIL_RE` has TWO consumers as of round-4's 65d257ce
(isBracketMilestoneBoundary's own use, plus bracketHeadingHasMatchingChild's
same-id-PHASE-child conjunct), not the "no other consumers" the comment
claimed. Same correction pattern round-4 already applied to this row's
BRACKET_HEADING_INTRO_RE neighbor (that sentence's own staleness was fixed
in 4d7184b8): note the true consumer count, confirm both stay nested inside
the same bracketBoundaryActive runtime gate (verified at
src/roadmap-parser.cts:178 and :250, both reached only through the
`if (bracketBoundaryActive)` block starting at :529), and record which
commit and which fix introduced the drift. Comment-only; no assertion
logic changed.

Line count: 2 files, 8 insertions / 2 deletions total — one added clause
in the changeset (1 line changed) and one comment block replacing the
single stale line in the test file (6 comment lines replacing 1).

Verified: targeted suite (adr-612-*, roadmap-parser, state, verify)
unchanged at 965/965 pass (comment/prose-only diffs, no test count change).
`node scripts/changeset/lint.cjs` and `npx eslint` on the touched files both
clean.

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

* fix(#2761): restore the bracketId guard on the bracket-only /^0\b/ sibling rule (round-6 Blocker 1)

Round-5's Blocker 1 was `isSentinelPhaseId("undefined-00")` — the merge
that introduced the shared counter dropped the `bracketId &&` guard on the
sentinel check. This is the identical failure one line further down, in the
sibling rule this PR itself added: when the phase-heading grammar's LEGACY
alternative matches (`### Phase 0:` in a `phase_id_convention: "bracket"`
repo — the mid-migration shape this PR exists for), `bracketId` is
`undefined`, and the unguarded `/^0\b/` fires on the bare token anyway.
Neither the LEGACY branch of this same function nor
`getMilestonePhaseFilter` has a `/^0\b/` rule at all, so the filter counts
the phase and admits its completed directory while the counter refuses to
count its heading — a milestone with an unstarted phase 02 persists as a
confident 100%.

`/^0\b/` matches `0` and `0.5` (word boundary before the `.`) but not `00`
(no boundary between the two zeros), which is exactly why round-5's G3/G3d
fixtures (`### Phase 00:`) never tripped this one — same defect class,
different token spelling.

Fix: one word, mirroring the guard round 5 restored two lines above —
`if (/^0\b/.test(token)) continue;` -> `if (bracketId && /^0\b/.test(token)) continue;`.

Expected and intentional side effect: `roadmap analyze` and `state json`
now disagree again on this bracket-repo shape (analyze phase_count=2, json
total_phases=3) — exactly as they already do under the legacy convention
today (verified via /tmp/pr612rev/rv6c.cjs on both conventions). That is
the counter regaining agreement with `getMilestonePhaseFilter` (the tighter
constraint — it is what actually decides `completed_phases`), not a new
break; the counter/filter disagreement is what was wrong.

Out of scope, deliberately NOT fixed here (Minor 1, disclosed via a PIN
test only): the bracket-SPELLED `### [GSD.02] 0:` shape has the same
counter/filter disagreement, but reads 2/2/100 on base too — never closed
by any build in this arc, so it is a pre-existing gap rather than a
regression this commit could introduce.

Line count: src/state.cts is exactly 1 insertion / 1 deletion (one word,
`bracketId && ` prepended to the existing condition).

TDD: T0 (`Phase 0:`) and T05 (`Phase 0.5:`) verified RED at HEAD before this
commit (json 2/2/100, sync body 100%) via /tmp/pr612rev/rv6b.cjs, GREEN
after (3/2/67 on both derivations, matching TRUTH). Zero-drift verified by
diffing the FULL corpus (rv5-attack, rv5b, rv4-attack, rv-attack1,
rv-attack1b, rv-attack3c, rv-mech1, rv2-amend1, rv2-amend2, rv6-attack
H1-H19, rv6b) between a pre-fix and post-fix build: the only differing
lines in the entire diff are T0, T05, and H14 — the three target fixtures.

New tests (adr-612-bracket-phase-counting.test.cjs):
  - RED (T0) + PIN (T0L legacy control)
  - RED (T05) + PIN (T05L legacy control)
  - PIN (B0, bracket-spelled `0` — base-parity characterization, Minor 1,
    not fixed this round)
  Round-5's own G3 test (`### Phase 00:`) already serves as the T00 pin —
  `/^0\b/` never matched `00`, so it is unaffected and untouched.

Targeted suite (adr-612-*, roadmap-parser, state, verify): 965 -> 970 (+5),
0 fail. `lint-phase-id-drift.cjs` and `npx eslint` on touched files clean.

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

* chore(#2761): changeset re-attributes the phase-count level cap + discloses the bare-0 carve-out; correct two stale test comments (round-6 Minor 1 + Nits)

FIX 2 (Minor 1 — disclosure only, NOT a code fix): the bracket-SPELLED
`### [GSD.02] 0:` / `0.5:` shape has the same counter/filter disagreement
round-6's Blocker fixed for the legacy spelling, but it reads 2/2/100 on
BASE too — never closed by any build in this arc, so it is a pre-existing
gap rather than a regression this round could introduce. Two changes:

  - Pinned as a base-parity characterization: new PIN test (B0) in
    04b5a95f's describe block asserting the exact unchanged value with a
    comment stating why it's deliberately not touched.
  - .changeset/2761-bracket-read-tolerance.md: one qualifying clause added
    to the "counted from ALL of the phases … not a subset" sentence — a
    bare `0`/`0.x` phase token (however spelled) keeps `roadmap analyze`'s
    own pre-existing sentinel reading under bracket too, so it stays
    excluded from these counts. Carried over, not newly introduced by this
    PR — `roadmap analyze` has always read it this way.

FIX 3(a) — same changeset paragraph misattributed the phase counter's
2-4 level cap to "the milestone-boundary machinery in this PR" (the
selector, `isMilestoneBounded`, the preamble scan) — that machinery caps
at `###` (level ≤3), not 2-4. The 2-4 cap belongs to
`getMilestonePhaseFilter`'s own phase scan. Re-pointed the attribution;
the paragraph's earlier, correct ≤3 claim (selector/isMilestoneBounded)
is untouched.

FIX 3(b) — tests/adr-612-bracket-heading-selection.test.cjs:76-82 (added by
1395bd89, round-5's own Nit-1 correction) claimed both
`BRACKET_PHASE_TAIL_RE` consumers are reached "only through the
`if (bracketBoundaryActive)` block starting at :529". Verified at HEAD:
`bracketHeadingHasMatchingChild` is (only caller :593, inside that block).
`isBracketMilestoneBoundary` is not — it has two callers, an inline
`bracketBoundaryActive &&` conjunct at `:473` (inside `computeSectionEnd`)
and the `:529` block at `:567` — the very fact this row's own earlier
"exactly two callers" paragraph already stated correctly. Corrected the
mechanism claim; the CONCLUSION (every consumer is still gated on the same
flag) is unchanged, exactly as round-5's own Nit-1 fix left round-4's
conclusion unchanged when it corrected the consumer count.

FIX 3(c) — tests/adr-612-bracket-phase-counting.test.cjs:2311,2340 still
said "four fence-blind sites" after round-5 (357ba671) added a fifth
(the retirement scan) in its own block below. Reworded both the section
comment and the `describe()` label to read as historical scoping of
round-4's own fix ("the four sites known at round 4 … a fifth was found at
round 5, see its own block below") rather than a live exhaustive claim.

Line count: 3 files, changeset 1/1, heading-selection test 17/8,
phase-counting test 6/2 (comment/prose-only; B0's own PIN test landed in
04b5a95f alongside T0/T05 since it was investigated as part of that same
Blocker's defect class, not in this commit — noted here for the record).

Verified: targeted suite (adr-612-*, roadmap-parser, state, verify)
unchanged at 970/970 (comment/prose-only diffs, no test count change).
`npx eslint` and `node scripts/changeset/lint.cjs` both clean.

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

* fix(#2761): W021's bracket remediation hint stops pointing at a command that hard-errors (round-7 Minor 2)

`checkBracketCoherence`'s W021 (added by 94abf5df) attached the fix hint
`Run \`gsd-tools roadmap upgrade --convention bracket\` to migrate
(dry-run by default)` to every bracket-convention W021 — both sub-checks
(`missing-bracket` and `mismatch`) share the single `addIssue` call at
src/verify.cts:2255-2256. But `roadmap-command-router.cts:204` throws
unconditionally for any `--convention` value other than
`milestone-prefixed`:

  $ gsd-tools roadmap upgrade --convention bracket
  Error: Only --convention milestone-prefixed is supported

This contradicts the PR's own two disclosures: the changeset ("`bracket`
is a READ-path opt-in until the migrator and write path land") and
docs/CONFIGURATION.md:188 ("There is no bracket migrator and no bracket
emit yet"). Reachability is the exact mid-migration repo this PR targets —
any bracket project with one un-migrated heading gets an unfollowable
instruction on every `validate health`.

Fix: one string. Replaced the hint with what a user can actually do today —
manually align the heading's bracket milestone to its section — and named
the tracked future landing (#612 PR-3) instead of a command that errors.
The milestone-prefixed sibling hint at src/verify.cts:2240 (a different,
already-functional convention/command pair — verified against
roadmap-command-router.cts:65) is untouched.

Line count: src/verify.cts is exactly 1 insertion / 1 deletion (one string
literal).

No test in the suite previously asserted this string's content
(`grep -rn "upgrade --convention bracket" tests/` was empty), so the
unfollowable hint shipped unpinned — `lint-fix-has-regression-test.cjs`
would not have caught a string-only change without a new test. Added one:
asserts the fix string both (a) does not match `--convention bracket`
(the specific pinned-before-this-fix hazard) and (b) equals the new string
exactly, covering the invariant a future edit must not re-break: no
unsupported `--convention` value named in remediation text users are
expected to run verbatim.

Verified end-to-end (not just unit-level) via /tmp/pr612rev/rv7f.cjs: the
W021 issue's `fix` field now reads the new string; `gsd-tools roadmap
upgrade --convention bracket` (and its --dry-run variant) still correctly
hard-error — that command remains unsupported, only the hint text changed.

Targeted suite (adr-612-*, roadmap-parser, state, verify): 970 -> 971 (+1),
0 fail. `lint-phase-id-drift.cjs` clean; `npx eslint` on touched files:
0 errors (1 pre-existing unrelated no-elapsed-assertion warning, same file,
same line this arc's prior rounds already disclosed).

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

* chore(#2761): correct the bare-0 changeset disclosure + disclose W021's second sub-check (round-7 Minor 1 + Nit 1)

FIX 1 (Minor 1) — round-6's bare-0 changeset clause (1395bd89) was wrong in
three falsifiable ways:

  (a) Its own illustration (`### Phase 0:`) is exactly the LEGACY spelling
      04b5a95f made COUNTED. The residual exclusion after that fix applies
      only to the BRACKET-spelled token (`### [GSD.02] 0:`) — the clause
      named the wrong shape as its example.
  (b) "excluded from these counts" over-scoped the carve-out. The phase-0
      directory is admitted into `completed_phases`/`total_plans` in BOTH
      spellings (measured: B0 at HEAD has `completed_phases=2`,
      `accepts {"GSD.02-0-bootstrap":true}`). The exclusion that survives
      lives in `total_phases`/`phase_count` (heading counting) only.
  (c) The pre-existing "so `roadmap analyze` and `state json` report the
      same number" sentence (present since before this arc's bracket work)
      is now false for the bare-0 LEGACY-spelled shape: 04b5a95f's own
      commit message discloses this exact re-divergence as expected —
      `roadmap analyze` phase_count=2 vs `state json` total_phases=3 on T0
      — matching the disagreement legacy already carries today. The
      changeset still asserted unconditional agreement.

Rewrote both sentences: dropped the `### Phase 0:` example, scoped the
carve-out to `total_phases`/`phase_count`, named the bracket-spelled token
as the one that keeps analyze's sentinel reading, stated plainly that the
legacy-spelled form in a bracket repo IS counted (the mid-migration guard),
and qualified the "report the same number" claim to the `999` token, with
the bare-0 legacy-spelled shape named as the one exception and why.

FIX 3 (Nit 1) — `checkBracketCoherence` has always had two sub-checks
(its own docstring: "Two sub-checks, both surfaced as W021") but both the
changeset and docs/CONFIGURATION.md:188 described only the `mismatch`
sub-check. The `missing-bracket` sub-check — which fires on every
legacy-spelled heading in a bracket repo, the noisier of the two on a
mid-migration project — was undisclosed in both places. One clause added
to each.

Line count: 2 files, 1 line changed each (both are single-paragraph/
single-row files; git diff --stat reports 1/1 per file though several
distinct clauses were edited within that one line each).

Verified: `node scripts/changeset/lint.cjs` clean. Targeted suite
(adr-612-*, roadmap-parser, state, verify) unchanged at 971/971
(prose-only diffs, no test count change, no code touched).

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

* chore(#2761): resolvePhaseIdConvention's docstring no longer claims loadConfig drops the key

Upstream #2997 (aa7697fe, landed in `next` during this PR's final
verification) added `phase_id_convention: get('phase_id_convention') ?? null`
to `_baseConfig` in config-loader.cts — `loadConfig` now surfaces
`phase_id_convention` in its resolved config. This function's docstring
gave "loadConfig merges against CONFIG_DEFAULTS and drops keys it does not
know, and `phase_id_convention` is not among them" as the reason for
reading config.json directly instead of calling `loadConfig(cwd)`. That
rationale is now stale against live `next`.

Corrected the comment to state the two reasons that actually survive #2997:

  1. The workstream->root federation this function performs is a standalone
     resolution run against a GIVEN cwd, not necessarily the same base a
     `loadConfig(cwd)` call elsewhere in the codebase would federate from.
  2. Convention-ENUM validation is still #612 PR-4 work — this function
     returns the raw string unvalidated, exactly as the now-surfaced
     resolved key would.

Noted that #2997 surfacing the key makes consuming it from resolved config
(instead of re-reading config.json here) a natural PR-4 consolidation —
not this PR's scope. The "cycles were never the obstacle" close and every
other paragraph in the docstring (federation rationale, SCOPE note) are
untouched; they still hold.

Comment-only — no code behavior changed. This worktree's own history does
not contain aa7697fe (git merge-base --is-ancestor confirms neither branch
is an ancestor of the other; not rebasing per instruction), so this is a
textual correction against a documented external fact, not a functional
sync with upstream.

git diff --stat:
 src/planning-workspace.cts | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

Verified: `npm run build:lib` clean, `node scripts/lint-phase-id-drift.cjs`
clean, `npm run lint:ci` exit 0 (same 2 pre-existing unrelated eslint
warnings as every prior round this arc, 0 errors; lint-fix-has-regression-test
PASS). Full suite not re-run per instruction (comment-only diff).

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

* fix(#2761): resolve phase_id_convention against the caller's workstream

`resolvePhaseIdConvention` took no workstream, so it resolved from
`planningDir(cwd)` — which falls back to `GSD_WORKSTREAM` only when its `ws`
argument is `undefined`. Every caller that passes a workstream by ARGUMENT
(they cannot set the env var per iteration) therefore read the convention from
the ROOT config while reading that workstream's ROADMAP.

Two reproduced consequences:

- A workstream that explicitly declares its own `phase_id_convention` had it
  ignored. Flipping ONLY the root config between bracket and milestone-prefixed
  changed which milestone that workstream extracted.
- `--workstream foo` and `GSD_WORKSTREAM=foo` disagreed on the same repo: the
  arg form fell through to the root config, the env form did not.

`resolvePhaseIdConvention(cwd, ws?)` now forwards `ws` to `planningDir`, and
both roadmap-parser call sites pass theirs — `extractCurrentMilestoneScoped`
(which already reads STATE from `planningDir(cwd, ws)`) and
`getMilestonePhaseFilter`'s lazy branch. `undefined` keeps the env fallback, so
convention-less call sites are byte-identical; `null` still means "explicitly no
workstream". The `undefined` vs `null` discriminator on `phaseIdConvention` is
untouched — only the base the `undefined` branch resolves FROM moves.

workstream-inventory's two sites (`countRoadmapPhases`, `inspectWorkstream`)
passed a literal `null` where they meant `undefined`, pinning every workstream
to the legacy grammar. On a bracket workstream whose milestone declares 3
phases that returned phaseCount 0 and fell back to the on-disk directory count;
it now returns 3. A non-bracket workstream is unchanged (legacy control pinned).

The workstream -> root federation is preserved: a workstream that declares no
convention still inherits the root, as config-loader does. That inheritance is
pinned so the fix cannot be over-applied into isolation.

* fix(#2761): classify missing phase details per occurrence, not per token

Under READING-B a phase's sentinel status lives in the BRACKET, so
`[GSD.999] 01` and `[GSD.02] 01` share a token and are not the same phase.
Both sides of the missing-detail check were keyed by the bare token anyway, and
both produced false negatives in `missing_phase_details`:

- The checklist scan built a token -> bracket-id Map, FIRST-WINS. Of two entries
  sharing a token, whichever the author wrote first classified both. With
  `- [ ] **[GSD.999] 01: Icebox**` above `- [ ] **[GSD.02] 01: ...**` the real
  phase inherited the icebox's sentinel verdict and vanished from the report;
  swapping the two bullets — same document, same phases — reported it. Pinned
  with a test asserting BOTH orders.

- The detail set was `new Set(phases.map(p => p.number))`, also token-keyed, so
  `[GSD.02] 01`'s heading marked token `01` present and satisfied
  `[GSD.03] 01`, which has no heading anywhere. Order-independent, same class.

Both sides now key on an occurrence key: the owner's `bracketQualifiedKey`
(fold- and padding-insensitive, so `[gsd.2] 01` and `[GSD.02] 01` are one
phase), falling back to a fold-normalized composite for the two shapes that
grammar refuses — a token carrying its own hyphen, which splices to an id whose
trailing segment the qualified-key grammar truncates (the hazard
`getMilestonePhaseFilter` guards with its own `!token.includes('-')`), and any
id it does not accept. With no bracket id the key IS the bare token, so the
legacy path keeps its exact keys and dedupe order.

The emitted value is unchanged — `missing_phase_details` stays an array of bare
tokens, matching `phases[].number`. Only the classification moved to the
qualified key, so two brackets' `01` both missing report `01` once instead of
one silently covering for the other.

* test(#2761): replace the two wall-clock ReDoS assertions with algorithmic bounds

Both guards asserted elapsed wall-clock time — `Date.now()` against a 20s
ceiling in the coherence suite, `process.hrtime.bigint()` against 1s in the
read-tolerance suite. Those measure the host machine rather than the SUT and
flake on a loaded CI runner (RULESET.TESTS.no-timing-assertion). Per
RULESET.TESTS.delete-bad-tests they are REPLACED, not skipped, and the
behavioral property each one guarded is preserved.

The property is "the widened bracket patterns do not backtrack
catastrophically", which is a claim about growth, so it is now stated by
scaling the input instead of by timing it:

- validate health runs the pathological unclosed bracket at 4,000 and 16,000
  characters and must return the same correct result (no W021) at both.
- The four reader entry points run five ReDoS shapes at 5,000 and 20,000 and
  must name exactly the phases each shape should name at each size, with the
  variant cardinality unchanged across the two.

Catastrophic backtracking is superlinear, so a regression cannot complete the
4x leg under any ceiling, while a bounded matcher is indifferent to the
scaling. The one attack that is well-formed-but-oversized now pins its reading
precisely (`['1'.repeat(n)]`) rather than being lumped in with the malformed
ones. A positive control asserts the readers still extract a well-formed
bracket heading, so "names no phase" cannot pass by the readers being inert.

`{ timeout }` is a hang backstop, not an assertion: it turns a runaway into a
deterministic failure instead of a suite that never returns.

* fix(#2761): give the bracket grammar one owner and teach the drift guard to see it

The bracket milestone-intro grammar was re-typed verbatim in three readers —
roadmap-parser's bracket-fallback selector, state's `isMilestoneBounded` and
verify's `checkBracketCoherence` — which is exactly what #2761's own gate
forbids ("no token literal outside src/phase-id.cts"). `check:phase-id-drift`
reported clean the whole time: its detector only ever knew the phase-NUMBER
token grammar, so the bracket class `[A-Z][A-Z0-9_]*` was invisible to it.

Ownership. `src/phase-id.cts` now exports the class as
`BRACKET_PROJECT_CODE_SRC` and the intro in the two shapes its readers need:
`bracketMilestoneIntroSrcFor(milestone)` (pinned to one milestone) and
`BRACKET_MILESTONE_INTRO_CAPTURING_SRC` (milestone captured). The pinned
builder owns the pad2 spelling rule too — "canonical spelling only, not `0*N`"
was previously restated in prose beside each copy, a convention two files had
to keep agreeing on by hand. `BRACKET_ID_SRC`, `BRACKET_ID_PREFIX_RE` and
`BRACKET_QUALIFIED_KEY_RE` now compose the class rather than re-spelling it.
All three call sites consume the owner; the regex sources are byte-identical to
what they spelled, asserted against hand transcriptions of the pre-fix lines.

Guard. `scripts/lint-phase-id-drift.cjs` gains a bracket rule
(`findBracketGrammarDrift`), wired into `scanRepo` and tagged `kind`. It
deliberately does NOT copy the token rule's `line.includes(CANON_REF)` escape:
that escape is line-level, and verify's copy referenced the owner for the
MILESTONE field on the same line as the re-typed PROJECT-CODE class — so a
bracket rule with that escape would have kept passing on the very site under
review. Partial ownership is the drift; only a dedicated `// phase-id-owner:`
comment suppresses it.

Proof, end to end: planting the shipped verify.cts literal back into src/ makes
`npm run check:phase-id-drift` exit 1 naming `[bracket] src/verify.cts:1475`;
restoring it returns the gate to ok.

Tests. phase-id-drift-guard carries all three shipped literals as negative
fixtures, the same-line-owner-reference case, the case-widened evasion variant,
the sanction rules, and a temp-tree scan proving the rule is wired into
scanRepo rather than merely exported. continuation-grammar-parity drives the
pinned and capturing shapes over a 12-entry corpus and requires the same
verdict from both plus the same captured milestone — widening either alone
fails there.

* test(#2761): drop the out-of-scope source-grep exemption from the selector pin

The baseline-selector pin in tests/adr-612-bracket-heading-selection.test.cjs
read `src/*.cts` with readFileSync and regex, claiming the no-source-grep
escape with a source-text-is-the-product reason. CONTEXT.md's documented scope
(RULESET.TESTS.no-source-grep.exemption) reserves that escape for tests whose
subject is a runtime CONTRACT FILE — STATE.md, config.toml, hooks.json, agent
.md — and `src/*.cts` is none of those.

It was also broader than it looked: eslint-rules/no-source-grep.cjs matches the
marker in ANY comment in the file, so one block's claim disarmed the rule for
the whole ~700-line suite.

The pin itself is worth keeping — the BASELINE ARGUMENT at each call site is a
fact no behavioural test can recover (flipping verify's milestone-complete site
from LABEL_ONLY to ANY_BRACKET grants a tolerance it has never had, and every
behavioural test still passes), so pinning it does require reading the authored
source. That reading moved to `scripts/lint-phase-id-drift.cjs` — the seam's
own guard, where source scanning is sanctioned (`warn` scope) and already
happens for the grammar rules — as `countSelectorBaselines` /
`scanSelectorBaselines`, which return a structured census. The test asserts on
the returned data and touches no file text.

CONTEXT.md is unchanged: the exemption scope was not widened to fit the test.
No marker remains in the suite, so the rule is live across all of it again, and
eslint passes with the escape removed rather than relocated. A floor assertion
pins that the census actually found the five consumers, so the "no other file
consumes the selector unpinned" check cannot pass on an empty scan.

* docs(#2761): rewrite the changeset as a lead + deltas instead of one paragraph

The fragment was a single ~6,400-character paragraph that opened on internal
mechanics, buried the user-visible change, and named an internal test path
(tests/adr-612-bracket-phase-counting.test.cjs) that means nothing to a reader
of the CHANGELOG.

It now leads with what a user sees — bracket-style phase IDs are recognized on
the read path across roadmap, validate, verify and state — followed by compact
bullets for the behavioral deltas, the opt-in caveat, and the upstream
consequences. Both merge-added disclosures are kept: the #3185 legacy-sentinel
Phase-0 delta with the reason the bracket counter keeps the narrower rule, and
the enumerator's convention-argument default flip with the four newly-scoped
read surfaces and the note that archival and milestone-completion paths are
unchanged. Two deltas from this review round are stated as their own bullets:
per-occurrence classification in `missing_phase_details`, and workstream-scoped
convention resolution including the workstream-rollup count change.

The internal test path is gone and the body is down to ~3,850 characters. The
bullets render as sub-bullets under the CHANGELOG entry and the `(#NNNN)`
suffix still lands on a trailing paragraph rather than mid-list.
`npm run lint:changeset` passes.

* test(#2761): use helpers.cleanup in the drift-guard temp-tree test

`local/no-raw-rmsync-in-tests` rejects a bare `fs.rmSync` in tests — the shared
helper carries the Windows-EBUSY retry budget. The temp-tree scan added with
M3's guard coverage test used the raw call.

* docs(#2761): correct the occurrenceKey comment on qualified-key normalization

The comment claimed `bracketQualifiedKey` is "fold- and padding-insensitive, so
`[gsd.2] 01` and `[GSD.02] 01` are one phase". The fold half is right; the
padding half is not. `BRACKET_MILESTONE_NUMERIC_SRC` is `(?:[1-9]\d{2,}|\d{2})`,
so `bracketQualifiedKey('GSD.2-01', 'bracket')` returns null and that input
takes the composite fallback instead.

No behavior change — the two key spaces use different separators and cannot
collide — but the claim was checkable and wrong. Restated: the owner case-folds,
and padding-tolerance is not a property it has or needs, because each accepted
milestone has exactly one canonical spelling and `[GSD.2]` is malformed rather
than an alternate spelling of `[GSD.02]`.

* ci(#2761): give the coverage-gate job the heap floor the shard jobs already have

The gate's report steps parse ~2.5GB of merged raw V8 dumps in one
process at the runner's implicit ~4GB ceiling, so pass/fail comes down
to GC timing (run 31338081337 OOM'd; next passes the same volume at
28s). Deterministic locally: crashes at --max-old-space-size=4096,
completes in 11s at 8192. PR shard data is within 0.15% of green next
runs — the load is pre-existing, only the ceiling was missing. #2952
set 6144 on the shard-collection step; the gate job was missed.

* Revert "ci(#2761): give the coverage-gate job the heap floor the shard jobs already have"

This reverts commit 03c74a97c911e9ddc53675aded9c9bbb89f14cd1.

* fix(#2761): thread the resolved convention into cmdStateValidate's phase-directory lookup

#3208 replaced cmdStateValidate's `startsWith` prefix test with the canonical
`phaseKeyFromDir(...) === selectedPhaseKey` comparison. That is the right
surface, and it is why the lookup now needs the resolved `phase_id_convention`,
which the rewrite does not pass.

`phaseKeyFromDir` deliberately refuses to read a bracket directory without an
explicit signal (ADR-2121: a bracket dir is string-indistinguishable from the
legacy letter-prefixed-decimal family), so un-threaded it returns the whole dir
name as the key — `GSD.02-05-real-work` -> `GSD.02-5-REAL-WORK` — while the
STATE side is the bare `05` that `parsePhaseFromProse` yields. Both sides of one
comparison derived under different conventions is #2562's defect class, and this
file's other three `phaseKeyFromDir` call sites already thread against it.

Observable: a bracket repo whose phase directory plainly exists reported
`valid: false` and "no phase directory matches phase 05", and the drift scan
(plan-count mismatch, verification status) never ran. The pre-#3208 `startsWith`
missed the same directory but skipped silently, so this is a visible-failure
regression on bracket repos, not a new miss.

Non-bracket conventions are byte-identical by construction: `extractPhaseToken`
branches only on `=== 'bracket'`, so null / 'milestone-prefixed' / unresolvable
compile the same path as the un-threaded call. The flat-legacy twin assertion
pins that.

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

* docs(#2761): note the cmdStateValidate convention threading in the changeset fragment

The fragment described the bracket read path as of the pre-merge branch. 504c64ff
added a shipped behaviour change — `state validate` now resolves bracket phase
directories — that the fragment did not mention, so the rendered changelog would
have under-described what ships.

Body text only; `type` and `pr` are untouched.

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

* test(#2761): invert the inherited-wart characterization — #3225 fixed it upstream

Required by the merge of next @ 86101ee6; test-only, no src delta.

This branch disclosed rather than fixed a pre-existing upstream wart: on a
LEGACY repo, `### Phase 999:` warned from `validate consistency` while
`validate health` suppressed it — the two verbs contradicting each other.
The case was pinned as a characterization test ("INHERITED WART, unchanged")
precisely so it would INVERT if upstream ever closed it, rather than rot
silently.

ae7dc529 (#3225) closed it, by adding the `isSentinelPhaseId` guard to this
very loop. So the assertion inverted on the merge — as designed. Flipped to
assert the FIXED behaviour rather than deleted: it is the negative-space
proof that this branch's `sentinelPhases` guard never had to grow a legacy
reading of its own, and it reds if a future conflict resolution keeps our
guard while dropping upstream's.

Added a scope control alongside it (a legacy NON-sentinel `### Phase 09:`
with no directory still warns), so deleting the loop outright cannot pass.

Union proven load-bearing in BOTH directions against the merged tree —
neither guard subsumes the other:
  - drop `isSentinelPhaseId(p)` (ours only) -> 1 red, exactly this case.
    Note upstream's own #3225 tests stay GREEN there: they cover the
    disk-side loops (sentinel dir on disk) and the gap-numbering filter,
    not the ROADMAP-side loop. This case is that site's only coverage,
    which is the second reason to keep it rather than delete it.
  - drop `sentinelPhases.has(p)` (upstream only) -> 4 red bracket suites
    (icebox-not-missing, health/consistency agreement, occurrence-aware
    suppression, checklist-index suppression).

tests/adr-612-bracket-read-tolerance.test.cjs 79 -> 80, all green.

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

* test(#2761): pin the three re-homed W006/W007 reads the merge left unfalsifiable

#3309/#3310 deleted the helpers this PR threaded (collectDiskPhases,
collectDiskPhaseEntries, collectArchivedPhaseDirNames,
forEachArchivedPhaseToken) and rebuilt their reads inside
src/planning-snapshot.cts + src/health-diagnostic-rules/*.cts. The convention
threading moved with them in the merge commit — but a mutation sweep over the
re-homed sites found three where reverting the convention argument changed real
CLI output and NOT ONE existing test went red. The pre-migration sites were
covered indirectly, through helpers that no longer exist, so the coverage did
not survive the relocation even though the behaviour did.

Each case is pinned at the CLI with its flat-legacy twin as the byte-identity
control, plus a non-vacuity control in the opposite direction:

  archivedPhaseTokens      revert -> "Phase 05 in ROADMAP.md but no directory on
  (planning-snapshot.cts)            disk" for a phase whose only directory is
                                     under .planning/milestones/v1.0-phases/
  roadmapPhaseCheckboxes   revert -> "Phase 09 in ROADMAP.md but no directory on
  (planning-snapshot.cts)            disk" for an unstarted `- [ ]` phase
  W007's extractPhaseToken revert -> "Phase GSD.02-77-orphan exists on disk"
  (roadmap-disk-consistency)         instead of "Phase 77 exists on disk"

Red/green: each single-line revert reds exactly its own case and nothing else;
every legacy control stays green in all three runs.

NOT pinned, and disclosed as droppable rather than given an unfalsifiable test:
buildValidPhaseSet's extractPhaseToken(dir, convention) in W002. That rule
unions disk tokens with roadmapDeclaredPhases and archivedPhaseTokens, and any
STATE.md reference a bracket disk token would rescue is already rescued by the
ROADMAP half — probed directly, the argument makes no observable difference. It
is threaded because it restores collectDiskPhases(planBase, convention)'s
derivation exactly, not because a test needs it.

Test-only; revertable independently of the merge commit.

* fix(#2761): three review-lens corrections to the merge resolution

Found by an adversarial pass over the re-homing, none caught by any gate.

1. planning-snapshot.cts — `phaseDirs` goes back to upstream's exact call,
   `listMilestonePhaseDirs(paths.phases, { cwd })`.

   The merge passed the resolved convention explicitly, on the belief it was a
   behaviour-preserving spelling of the lazy default. It is not. The lazy path
   resolves `resolvePhaseIdConvention(cwd, ws)` with this call's `ws`, which
   defaults to `null` — the PROJECT-only reading, no root fallback — while the
   `phaseIdConvention` field is resolved federated (workstream -> root). On a
   workstream repo whose ROOT opts into bracket and whose workstream config
   does not, those answers differ, so the explicit pass silently re-scoped
   `phaseDirs`. No test covered it in either direction (proven: reverting is
   green across all bracket + health-diagnostic + snapshot suites). PR-2 does
   not need that change, so it is dropped rather than kept untested. The
   federation guarantee is still delivered where it is observable — in the
   rules that read `snapshot.phaseIdConvention`.

2. planning-snapshot.cts — `buildRoadmapBracketIncoherencesField` decides
   file-readability BEFORE the convention gate, so `scope` means one thing on
   every repo. Ordered the other way, an absent ROADMAP.md reported COMPLETE on
   a legacy repo and UNREADABLE on a bracket one — the same "nothing to say"
   state wearing two scopes, which is exactly the non-answer/answer distinction
   ADR-3180 §8.1 gives `scope` to carry. No behaviour change (RULE_W021 does not
   read this scope); it removes an ambiguity a reader of that ADR would catch.

3. roadmap-disk-consistency.cts — `checkW006` reads
   `roadmapSentinelPhaseTokens` without its own scope guard. That is safe
   TODAY because one builder call produces it and `roadmapDeclaredPhases` from
   one `buildRoadmapPhaseVariants` result, so their scopes are yoked; the
   existing COMPLETE check covers both. Stated in a comment instead of left to
   co-location, since an UNREADABLE sentinel set degrades to "nothing is a
   sentinel", which ADDS W006 warnings rather than dropping them.

* test(#2761): pin the two reads the #3165 extraction left unfalsifiable

DROPPABLE, offered as such. Test-only; the merge commit is correct without it.

#3428's extraction gave `collectAnalyzePhases` TWO call sites — the scoped
milestone window and the truncated-window recovery path. The merge threads
`convention` into both and swaps `detailKeys` with `phases` across the recovery.
Neither of those was falsifiable by the suite as it stood:

  - passing a NULL convention at the FALLBACK site, with the scoped site still
    threaded, is green across all 518 tests of the bracket, roadmap and
    milestone-window files. Every pre-existing bracket assertion reaches the
    enrichment through the scoped window, so none of them can observe the
    fallback's reading at all;
  - dropping `detailKeys = fallbackScan.detailKeys;` — the line this merge
    authored — is likewise green, because no fixture that reaches the recovery
    path carries a checklist bullet, so `missing_phase_details` is `null`
    either way.

That is the same hole class lap 3 closed in 9914359c: an argument whose revert
changes real CLI output with zero reds.

Pinned at the CLI on the shape that reaches the fallback on a bracket repo — a
MID-MIGRATION ROADMAP: bracketed ACTIVE milestone, its phase-detail sections
and checklist bullets sitting after an intervening CLOSED legacy milestone (so
the window closes over prose only), plus one legacy `### Phase N:` section of
its own. Six tests:

  - a NON-VACUITY control that removes the phase directories, so #3428's own
    precondition fails and the result is the empty one the recovery exists to
    replace — this is what proves the rest read the FALLBACK's output rather
    than the scoped scan's;
  - the directory assertion (`disk_status`/`plan_count`/`summary_count` for
    canonical `{CODE}.{MM}-{PP}-slug` dirs) + a flat-legacy twin asserting
    byte-equal shape, and that the twin is the right answer rather than a
    shared wrong one;
  - `missing_phase_details: null` for phases the recovery just found, and its
    companion direction — a bullet with no heading anywhere is STILL reported,
    so a fix that merely suppressed the report does not pass;
  - a non-bracket repo taking the same path unaffected.

Red/green, each mutation reverted afterwards:
  - fallback call site -> `null` convention: exactly 2 reds, both directory
    assertions in this block; 307 other tests green, including upstream's own
    #3428 tests in tests/milestone-window-single-owner.test.cjs.
  - `detailKeys` swap deleted: exactly 2 reds, both `missing_phase_details`
    assertions; 414 other tests green.
  - `matchPhaseDirs` 3rd argument dropped (the lap-2 site): 4 reds — the 2
    already on record plus this block's 2, which is the point: one seam, now
    reached by two paths.

DISCLOSED IN THE TEST BODY WITH MEASURED OUTPUT, not fixed: `hasPhaseEntries`
(src/roadmap-parser.cts) is convention-blind, so on a PURE-bracket ROADMAP the
window classifies COMPLETE and #3428's recovery is gated off entirely. That
document returns `{"scope":"complete","phase_count":0,"next_phase":null,
"phases":[]}` — the "genuinely empty milestone" answer, the indistinguishability
#3184 introduced `scope` to remove — where the flat-legacy twin returns
`{"scope":"truncated","phase_count":2,...}`. Widening it changes the value of an
upstream-owned output field on bracket repos, so it is a behaviour slice (the
PR-2.5/PR-4 convention-less-readers question), not a merge-round change. The
mid-migration shape pinned here is the reachable half.

* fix(#2761): mirror the bracket terminator in the milestone-scope write guard

#3446's `findMilestoneScopeHeadingLines` is defined as a MIRROR of the
parser's terminator vocabulary — "a level 1-3 heading that is not a Phase
heading and carries a milestone signal". On this branch that vocabulary is
convention-SELECTED: `computeBracketSectionEnd` adds `isBracketMilestoneBoundary`
as a terminator arm, and the ADR-canonical `## [GSD.09] Hidden` carries NO
vN.N token, NO ✅/📋/🚧/🔄 marker, and not the word "Milestone". Left
unmirrored, the guard accepted exactly the description it exists to reject.

NOT a defect on clean next — a bracket heading terminates nothing there. The
branch widens the terminator set, so the branch owns the mirror.

MEASURED at the CLI seam before the fix (bracket fixture, one milestone,
one phase):

  $ gsd-tools phase add $'Sneaky\n## [GSD.09] Hidden'   -> exit 0, written
  $ gsd-tools phase add 'Innocent follow up'            -> exit 0, written
  $ gsd-tools roadmap milestone-scope
    { "scope": "complete", "phases": ["01","1"], "phase_count": 2 }
  $ grep '^### Phase' .planning/ROADMAP.md
    ### Phase 1: Sneaky
    ### Phase 2: Innocent follow up      <- in the document, out of the window

After the fix the first add exits 1, ROADMAP.md is byte-unchanged and no
phase directory is created. The legacy twin (same text, no
`phase_id_convention`) still exits 0 — opt-in only, base behaviour preserved.

SHAPE
- `findMilestoneScopeHeadingLines(text, convention)` — REQUIRED, the same
  tripwire `scanMilestonePhaseIds` carries in the merge commit and for the
  sharper reason: a blind call here fails OPEN (the guard quietly ACCEPTS a
  window-narrowing description), so a future call site must fail to COMPILE.
  Census is one caller, which pays nothing for it. A non-bracket value takes
  the pre-existing path byte-identically. The bracket arm routes through
  `isBracketMilestoneBoundary`, the same single-owner phase-vs-milestone
  discriminator `computeBracketSectionEnd` consults; no second bracket-heading
  grammar is spelled here.
- `selectedBracketId` is deliberately `null`, so the same-milestone
  CONTINUATION exemption never fires and a value naming the ACTIVE milestone
  is flagged too. That is this predicate's third stated conservatism and
  rests on its own existing argument: which milestone is active is a property
  of the document at write time, not of the text being validated, and
  over-rejecting is one-directional.
- `assertDescriptionPreservesMilestoneScope` takes `cwd` and resolves through
  the branch's tolerant try/catch — this guard runs BEFORE `loadConfig` and
  before the ROADMAP existence check, so an unresolvable convention must
  degrade to the legacy vocabulary, never turn a rejection into a crash.
- The error's marker list gains the bracket form only when the project is on
  the bracket convention.

RED/GREEN
- Revert the bracket arm -> 2 reds (phase add; insert + add-batch), the
  non-bracket control and both no-false-positive cases stay green.
- Revert the probe threading in the merge commit -> 1 red (the probe case).
- 6 new cases in the #3262 file, each with a non-bracket or
  no-false-positive control: fenced bracket milestone heading and bracket
  PHASE heading are both non-violations.

Droppable: revert this commit and the merge stands on its own; the branch
then ships the gap as a disclosure instead of a fix.

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

* docs(changeset): narrow the enumerator claim to the directory set — per-entry rendering in progress/stats/init-manager is display-slice scope

Round-7 review confirmed 3 of the 4 surfaces named by the closing claim
parse each directory or heading with legacy-only patterns that live in
files this PR does not touch (commands.cts:1766, commands.cts:2116,
init.cts:2241). The claim now states exactly what this slice delivers:
the scoped directory set. Their per-entry conversion is display work,
deferred to the epic's display PR with the statusline/progress-card
gates it belongs beside.

* fix(#2761): de-accident the unmatched-milestone bracket fixture, re-pin to #3480's withhold contract

tests/adr-612-bracket-phase-counting.test.cjs:515 ("a milestone that
does NOT match STATE is not scoped in") asserted total_phases === 0.
Since today's merge brought in 70b5c1a1 (#3354/#3480, already in
`next`), buildStateFrontmatter withholds total_phases (omits the key,
read back as null) for a milestone that is genuinely sectioned but
matches no ROADMAP heading, instead of substituting a computed number
— the fixture's `state json` read now returns null, failing the
strictEqual(0) assertion.

The original single-section fixture's 0 only ever survived by
accident: hasMilestoneSectioning requires >=2 milestone-vocabulary
headings to call a ROADMAP sectioned, and its isPhaseHeading helper
recognizes only the legacy `Phase N:` text form — so the bracket
phase heading `### [GSD.03] 09: Not this milestone` (title containing
the word "milestone") miscounted as a second milestone heading,
tipping hasMilestoneSectioning true and routing to the disk-count
branch. With that miscount removed, the same one-section fixture
reads 1 (the non-matching milestone's phase count leaking into v2.0's
total) — proving the pinned 0 was never validating the scoping this
test claims to exercise.

Replaced the fixture with two genuine milestone sections (GSD.03,
GSD.04), neither matching STATE's v2.0, with phase titles carrying no
incidental vocabulary — the real #3354 shape. Re-pinned the assertion
to null, matching upstream's own tested contract (tests/state-
document.test.cjs, "#3354 with nothing stored, the key is omitted
rather than written from the dir count").

Verified: file green 3/3 runs (104/104), full state-suite regression
771/771 green. The isPhaseHeading gap that made the old fixture
accidental is a real, pre-existing, upstream-owned limitation
(hasMilestoneSectioning only guards >=2-section conflation, not a
single non-matching section leaking through) — not introduced by
#3480 or this branch; out of scope here.

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

* chore(#2761): exempt two self-authored-fixture regexes from #3441's unbounded-quantifier rule

Both sites parse the STATE.md the test itself just wrote to its own
tmpdir — fixed-size fixture output, not adversarial or document-scale
input. Exempted with the justification-comment pattern the tree's own
tests use for this exact case (settings-integrations, copilot-install,
research-agent-profiles). The sites predate the rule; #3441 landed on
next this morning and this branch picked it up in the catch-up merge.

* fix(#2761): fix forward two next-movement test regressions from the round-11 rebase

origin/next's #3573 newly threads STATE's stored `milestone:` value into
`state json`'s buildStateFrontmatter call (previously always `undefined` on
that read surface). Two pre-existing PR-2 fixtures reach code paths that
call never exercised before that merge:

- RED (repro2 case C): a version-less, all-bracket-id ROADMAP now hits
  getMilestonePhaseFilter's pre-existing (unaffected by this branch) row-5
  `versionResolved && !headingFound => SCOPE.UNSCOPED` rule, which withholds
  `progress.percent` even though the scoped total_phases/completed_phases
  are still correct. That row-5 rule is load-bearing for six other
  version-less-document pins in this same file; narrowing it broke seven of
  them in testing, so production code is untouched here. Reassert the
  test's real claim (scoping, via total_phases/completed_phases) and
  disclose the now-withheld percent instead of silently dropping it.

- PIN (repro12 LEGACY control): a fenced-example-vs-real version heading
  fixture. #3573 routes this read through sliceMilestoneWindow (fence-aware)
  instead of the legacy anyMilestonePattern raw scan (fence-blind) this pin
  was disclosing as out of scope, so the fixture no longer exercises the
  blind path — total_phases moves from the whole-doc 4 to the correctly
  scoped 2. Re-pinned with an upstream-attributed comment, matching this
  file's existing house style for prior origin/next movements (see the
  sibling "PIN (G3 LEGACY control)" comment).

Both are test-only fix-forwards: no production code changed. The remaining
12 failures in this file at 27363e9d0 (dropped seam commits' VERIFICATION.md
naming + fixture updates) are pre-existing and deferred to the stacked
follow-up per the task's own scope.

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

* fix(#2761): thread phaseIdConvention explicitly at the two write-adjacent enumerator call sites (round-11 BLOCKER)

listMilestonePhaseDirs' phaseIdConvention param lost its `= null` default
(phase-locator.cts), so an omitted convention now means "resolve from
config" instead of "explicitly not bracket" — a deliberate flip, but
milestone.cts and state.cts were not in the PR-2 diff and both call the
enumerator without threading it:

- milestone.cts cmdMilestoneComplete (the single #3597 shared derivation
  feeding the stats loop, --dry-run preview, and the real archive/rename
  pass) now resolves phase_id_convention once and threads it explicitly,
  so a bracket project's `milestone complete` archives its real
  bracket-declared phase directories instead of silently inheriting
  whatever the enumerator's lazy default resolves to.
- state.cts cmdStateUpdateProgress's own enumerator call threads the same
  resolved convention. Empirically this does not change the #3217 withhold
  gate (scope is assigned before headingConvention resolves in
  getMilestonePhaseFilter, so it's convention-independent either way) or
  the reported percent (already correctly threaded via
  computeUpdateProgressPreview -> buildStateFrontmatter); it closes a
  second, silently-resolved answer to the same question this file's own
  ONCE-and-THREAD rule (~:2300) already states as policy.
- state.cts's other listMilestonePhaseDirs call site (the state-sync
  scope-only read, ~:4791) is left unthreaded on purpose, with an inline
  note explaining why: only `.scope` is consumed, and `.scope` is set
  before convention resolution in getMilestonePhaseFilter, so it cannot
  disagree with a threaded convention.

Both enumerated sets are pinned by new tests (round-11 BLOCKER block in
tests/adr-612-bracket-phase-counting.test.cjs), including a mutation-style
regression check on the milestone.cts fix (forcing the un-threaded default
back on makes the pinned test fail, catching a regression to the
pass-all-degrade legacy reading).

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

* fix(#2761): correct the changeset's false archival claim and amend ADR-612 for the round-11 M2(2) split scope

The changeset (.changeset/2761-bracket-read-tolerance.md) asserted "The
archival and milestone-completion paths are unchanged" — false: both
paths reach the widened enumerator, and this PR now threads their
convention explicitly (previous commit). Replaced the closing paragraph
with an accurate description of what changes for a bracket project at
those two call sites, and notes both enumerated sets are pinned by tests.

ADR-612 (docs/adr/612-bracket-phase-id-convention.md) amended per M2(2):
the 2026-08-03 PR-2/PR-4 boundary proposal is added in-body (PROPOSED,
not stamped — mechanics per docs/contributor-standards.md:143 reserve ADR
ratification to maintainers), rescoped to what actually ships in PR-2
(#2761) now that the round-11 M1 split moved the completion-seam
threading (isPhaseArtifact/scopeToPhase, phase-id.cts:964-1090) out into
a separate, stacked follow-up PR referenced generically via epic #612:

- state.cts read-tolerance (both total_phases derivations, the #1514
  retirement filter) moves into PR-2's row, alongside milestone.cts,
  reflecting the round-11 fix above.
- the write-observability point is restated in terms of what actually
  ships: explicit threading at two named call sites, pinned by tests,
  rather than silent inheritance.
- the completion-seam threading is named and explicitly excluded from
  PR-2's scope, with a new ratify item (5) and a Negative consequence
  bullet covering the sequencing cost.

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

* fix(#2761): thread convention into the #3511 membership seam — bracket dirs scope like their legacy twins

Upstream #3511's isPhaseArtifact/scopeToPhase was structurally inert on
bracket directories: 3+-letter codes (GSD.02-…) fell into the zero-token
include-everything fail-safe (PROJECT_CODE_PREFIX_CAPTURE_RE_I strips
{CODE}-, not {CODE}.), and short digit-bearing codes (A1.02-…) into the
firstLetterPrefixed one — so every bracket dir read include-everything and
a cross-phase stray could complete a bracket phase, the exact
contamination #3511 shipped to prevent, still open on this PR's own
convention.

The seam now takes the same optional trailing convention its sibling
primitives do (ADR-2121 additive shape; gated on BRACKET_DIR_TOKEN_RE, the
one grammar owner shared with extractPhaseToken's bracket branch), through
a candidate-comparison core shared with the legacy path so the two cannot
drift. Threaded by the call sites that already hold the resolved
convention: the completion chain (isPhaseComplete ->
readVerificationStatus -> resolveVerificationFile, with a convention-aware
RESOLUTION token and a deliberately convention-less command-argument
token), buildStateFrontmatter, cmdStateSync, cmdStateValidate's S006/S007
scan, the planning snapshot, and roadmap analysis. Convention-less readers
(uat, audit, init, gap-checker, phase-locator) keep the documented
fail-safe — the follow-up slice.

The phase-counting fixture now writes what cmdScaffold writes
(phase-matched ${normalizePhaseName(phase)}-VERIFICATION.md) instead of a
hardcoded 01-VERIFICATION.md that #3511 correctly reads as a stray; the
stray shape is pinned deliberately in a new regression block (measured
pre-fix: [3,3,3,2,67] with the stray counted as completion) alongside
seam-level pins for BOTH fail-safe families, so neither the rename nor a
one-branch patch can stand in for the fix.

* fix(#2761): review round — gate the FILENAME reading on the convention too, ratify the M-NN twin-parity trade

Two-leg review of the seam thread (adversarial + upstream-fit, then an
adversarial re-verify of the fixes) found and this commit closes:

- Major: the convention gated only the DIRECTORY reading. A
  milestone-qualified artifact name (GSD.02-01-VERIFICATION.md — the layout
  the read-tolerance suite models) derives zero legacy token segments, so
  FIX 2's token-less containment admitted it into ANY bracket dir. Qualified
  stems now compare on bracketQualifiedKey — exact key, or the dotted
  sub-phase continuation (the round-2 verify caught strict equality dropping
  the dot arm: over-exclusion, the dangerous direction) — while a well-formed
  stem naming a different phase or milestone is excluded. Malformed
  qualified-shaped stems keep the documented include-everything fail-safe.
- Major, RATIFIED not changed: an M-NN-stem report (02-01-VERIFICATION.md in
  GSD.02-01-one) is excluded exactly as its legacy twin excludes the same
  file; migration-window artifact renaming belongs to the migrator slice
  (ADR-612). Pinned in tests with its legacy-twin control.
- Minor: the counting fixture's verificationNameFor now routes through the
  production normalizePhaseName (padding has a single owner), and its
  docstring states honestly which artifact layout it models.
- cmdRoadmapUpdatePlanProgress threads the convention into isPhaseComplete
  (ADR-3180 §7.4 read/write-path symmetry with the analyze site).

All pins carry measured pre-fix values. Convention-less paths swept
byte-identical (1,800 comparisons, 0 differences).

* fix(#2761): mark the round-11 decoy fixture incomplete so it doesn't need a phase token

The two round-11 BLOCKER tests (cmdMilestoneComplete / cmdStateUpdateProgress
enumeration) pass a `not-a-declared-phase` decoy directory to writeProject as
an implicitly-complete fixture entry. After threading convention through the
#3511 membership seam, verificationNameFor derives the scaffolder's real
verification filename from the directory's phase token — which the decoy,
by design, does not carry. Mark the decoy incomplete instead: the assertions
these tests pin (exclusion from would_archive.phases / stats.phases) don't
depend on the decoy having a VERIFICATION file at all.

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

* fix(#2761): repair round-11 response gaps — disk-side sentinel bug, test-fixture bug, scanMilestonePhaseIds caller drift

Four independently-verified gaps in the round-11 repair response:

1. isSentinelPhaseId (src/phase-id.cts) treated a bare, untagged phase
   directory under phase_id_convention: "bracket" (`0-bootstrap`, no
   `{CODE}.{MM}-` prefix) as sentinel milestone 0 by falling through to the
   legacy leading-int rule when the bracket-tag match failed. This silently
   dropped a real, on-disk, milestone-declared phase directory from
   `listMilestonePhaseDirs` (phase-locator.cts:424, the only unguarded call
   site) and undercounted completed_phases/percent. Mirrors the carve-out
   already present on both heading-side counters (state.cts's
   countRoadmapPhaseHeadings guards its bare-0 exclusion with `bracketId &&`;
   roadmap-parser.cts's scanMilestonePhaseIds composes the bare-token rule as
   999-only) — under bracket convention, milestone 0 is expressed only via an
   explicit bracket tag, so an untagged leading 0 is a real phase token.

2. tests/adr-612-bracket-phase-counting.test.cjs's writeProject fixture
   hardcoded `01-VERIFICATION.md` for every "complete" phase dir regardless
   of the dir's real phase token. Under legacy convention this file already
   correctly failed #3511's strict isPhaseArtifact match for any dir other
   than phase 01 (the fixture never modeled what it claimed to); under
   bracket convention the pre-existing ambiguity fail-safe admitted it
   regardless. The two readings' disagreement was mistaken for a missing
   completion-seam threading (isPhaseArtifact/scopeToPhase convention
   awareness, correctly split out to the stacked #3644 per round-11's M1).
   Replaced the hardcoded name with verificationNameFor(dir), deriving the
   real per-phase filename from the production normalizePhaseName the same
   way cmdScaffold does — the 7 failing "flat-legacy-twin" / CHARACTERIZATION
   assertions pass on #2867's own code with no seam threading required, and
   the genuine seam-dependent cross-phase-stray-exclusion test the fixture
   fix would otherwise have hidden lives on the stacked branch instead.

3. tests/roadmap-parser.test.cjs's two #3577 tests still called
   scanMilestonePhaseIds with the old single-Set return shape; this PR
   changed it to `{ ids, qualifiedIds }` for every other caller but missed
   these two, which don't touch #2761/bracket code at all. TypeErrors at
   runtime, not silently-wrong assertions. Updated both call sites.

4. .changeset/2761-bracket-read-tolerance.md gains a paragraph disclosing
   fix 1 above, so the changeset stays accurate to what actually ships (the
   round-11 BLOCKER was exactly this changeset going stale once).

Verified: tests/adr-612-bracket-phase-counting.test.cjs +
tests/continuation-grammar-parity.test.cjs + tests/roadmap-parser.test.cjs =
354/354. adr-612-{coherence,grammar,heading-selection,read-tolerance,
selection.property}.test.cjs + collision-characterization = 287/287
(CONFIRMED-CLEAN set, unaffected). Full unfiltered suite run separately.

PR #3643 (round-11's M1 split, opened draft per that round's explicit
requirement) was auto-closed by this repo's own draft-PR policy 11 seconds
after opening — draft PRs are unconditionally closed here. Reopened as
non-draft #3644 (same branch, same commits, DO NOT MERGE / stacked-on-#2867
marker in the body, enhancement template) since the repo's own bot confirms
non-draft contributor PRs are tolerated even off-template.

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

* feat(#2761): gated heading-intro selection + one bracket identity grammar

Foundation. Two owner-level changes plus a federated convention resolver; no
reader consumes them yet.

1. GATED SELECTION, not an ungated widening.

   Widening every heading matcher requires the claim "no legacy ROADMAP contains
   a `[CODE.MM]` bracket followed by a digit", and that is false:
   `### [RFC.2119] 5:`, `### [v1.0] 2024:`, `### [ADR.612] 3:` and
   `### [ISO.8601] 2026:` are ordinary headings, and a widened reader claims each
   as a phase — moving phase_count and total_phases and adding W006 on projects
   that never opted in. No narrowing rescues it: the premise is about documents
   we do not control.

   `phaseHeadingPrefixSrcFor(baseline, convention, capturing?)` selects the
   pattern SOURCE at construction time. A project whose resolved
   `phase_id_convention` is not exactly 'bracket' compiles the same source string
   it compiled before. `baseline` is explicit because whether a site spells the
   any-bracket prefix or a bare `Phase\s+` is a fact about that site's history:
   handing the wider grammar to a bare site retro-grants tolerance it never had,
   in both directions — warnings appear, and a warning that fires today vanishes.

   Both bracket forms CAPTURE. `[GSD.999] Phase 07:` previously matched through
   the base alternative, which captures nothing, so a reader saw no bracket, fell
   back to the legacy token rule, and counted a labeled icebox heading while
   excluding the label-less one beside it — two derivations of one ROADMAP
   disagreeing.

2. ONE bracket identity grammar, one width rule.

   The milestone width is reconciled with the emit validator: pad2 output, so
   two digits or 3+ with no leading zero. Earlier spellings diverged in both
   directions — admitting `002`, which the validator rejects, and a bare `0` pad2
   never produces — and the section recognizers accepted `[GSD.2]`, which SCOPED
   a milestone no phase heading could then resolve into, recreating the
   on-disk-count fallback this epic removes. An unpadded bracket is now uniformly
   malformed: it scopes nothing, bounds nothing, sections nothing. W005 on its
   directories is the surfacing signal.

   The milestone field is boundary-anchored, so a malformed run cannot match by
   its prefix (`GSD.002-01` read as sentinel `00`). Recognition stays
   case-insensitive because readers compile `/i`, but identity helpers match
   `[A-Z]`, so a captured id is folded first — otherwise `### [gsd.999] 07:`
   failed every sentinel test. The qualified key shares the width, the `(?=-|$)`
   boundary and the single-sub-phase shape of the directory token, because
   phaseTokenMatches returns unconditionally on a qualified hit: a key matching a
   directory isPhaseDirName rejects would be a final wrong answer.

3. resolvePhaseIdConvention federates workstream -> root exactly as
   config-loader does — including that root is a fallback only when a WORKSTREAM
   is active, so a project-scoped directory stands alone. loadConfig cannot serve
   this: it merges against CONFIG_DEFAULTS and drops keys it does not know, and
   this key is not among them. It governs the bracket-selection reads ONLY.

PHASE_HEADING_PREFIX_SRC is left byte-identical: PR-1 shipped it, nothing
consumes it, and it is superseded rather than redefined.

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

* feat(#2761): roadmap.cts selects its heading grammar from the convention

Six matchers build their intro through the gated selector, and
cmdRoadmapAnalyze / cmdRoadmapGetPhase / getRoadmapPhaseWithFallback each
resolve the convention ONCE per command and thread it down.

Three sites take the any-bracket baseline (they already tolerated
`[anything] Phase N`); three take label-only (they spelled a bare `Phase\s+`).
Handing the wider grammar to a label-only site retro-grants tolerance it never
had — and not only by adding matches: on a legacy repo an unchecked
`- [ ] **[v1.0] Phase 05: Thing**` bullet would start SUPPRESSING the W006 that
fires today.

Sentinel handling under bracket ADDS a rule rather than replacing one: a
bracketed heading is a sentinel when its bracket milestone is reserved
(`### [GSD.999] 01:`) OR when its token is, so the engine-wide 0/999 backlog
convention keeps applying to `### [GSD.02] 999:`. Replacing the token rule let a
mid-migration ROADMAP — bracket headings plus a legacy backlog block, exactly
the content this epic targets — add entries to the progress denominator. The
captured id is folded before the identity test, so a lowercase
`### [gsd.999] 07:` is excluded too.

The DIRECTORY read is threaded too. `cmdRoadmapAnalyze` resolves the convention
once and hands it to all four of its heading/checklist patterns, but the single
`phaseTokenMatches` call that decides `disk_status`, `plan_count`,
`summary_count`, `has_context` and `has_research` was left two-argument — so
every canonical `{CODE}.{MM}-{PP}-slug` directory read as `no_directory` with
zero counts, on the PR's own headline verb, while the SAME build resolved those
same directories correctly in three other places on the same repo (W006/W007 via
phaseTokenFromDir, `state json` via the milestone filter, and the W021
milestone-complete read through this very helper's three-argument form). It
failed ONLY for the directory shape the convention exists to name: a
mid-migration bracket repo carrying legacy `01-one` dirs resolved fine, which is
why nothing caught it. Measured, bracket vs its flat-legacy twin:
`[["01","no_directory",0,0],["02","no_directory",0,0]]` against
`[["01","complete",1,1],["02","planned",1,0]]`.

The oracle is the twin, computed in the same test run, plus exact literals —
`grep disk_status tests/adr-612-*` was zero hits before this, so neither the fix
nor a future regression had any gate at all.

Disclosed: a ROADMAP written in bracket form before config.json is switched
reads as empty rather than mis-counted. Silent invisibility during the migration
window is the deliberate trade against claiming phases on projects that never
opted in.

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

* feat(#2761): validate.cts selects its grammar; gated directory recognition

The W006/W007 feeders take the resolved convention as a threaded parameter.
These sites carry the letter-tolerant `[\w][\w.-]*` capture, which makes them
where an ungated widening does the most damage: `### [RFC.2119] 5:` enters
roadmapPhases as a phantom and becomes a W007 "in ROADMAP.md but no directory on
disk" on a project that never opted in.

buildRoadmapPhaseVariants also surfaces the tokens borne ONLY by sentinel-bracket
headings. Surfaced rather than filtered in place because roadmapPhases feeds both
a membership check and a missing-directory warning, and only the latter should
ignore an icebox item.

That set is OCCURRENCE-AWARE, and the subtlety is load-bearing: roadmapPhases is
a TOKEN set, so `[GSD.999] 01` and `[GSD.02] 01` collapse to one entry. Keying
suppression on the token alone let an icebox heading silence a REAL phase that
happens to share its number — a false negative strictly worse than the warning it
removed. A token is suppressed only when no non-sentinel heading bears it.

Directory recognition is added as gated FUNCTIONS beside the exported RegExp
constants, which stay byte-identical: the `{CODE}.{MM}-` prefix is
string-indistinguishable from the letter-prefixed-decimal family this repo
documents as ambiguous, and folding a branch in changes those constants' answers
on exactly that family. A RegExp constant has nowhere to attach a gate.

The recognizer mirrors the emit grammar and delegates the token to the canonical
owner, so recognizer and resolver agree on rejected input as well as accepted.
Both functions throw on a non-string, matching the call pattern they replace.

buildRoadmapPhaseVariants' CHECKLIST scan is capturing, like its heading twin
and like the sibling checklist scan in roadmap.cts, and for the reason that one
states: the bracket id has to ride along or the sentinel filter is blind to
`- [ ] **[GSD.999] 01: Icebox**`. Left un-capturing, the scan called every
checklist token REAL, and the occurrence-aware un-suppression loop then deleted
the icebox token the HEADING scan had correctly marked sentinel — so `validate
consistency` warned that a bracket ICEBOX phase had no directory, in the HOUSE
ROADMAP shape where an icebox appears as both a bold bullet and a detail
heading. `validate health` stayed silent on that same repo, so the two verbs
disagreed — which is the disagreement `sentinelPhases` exists to close.

Both directions are pinned, because the failure mode of a careless fix here is
the opposite one: a real phase sharing a sentinel's token must still warn. It
does, in all four shapes that attack it (sentinel heading + real bullet,
lowercase sentinel, sentinel after the real heading, colon-less bullet).

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

* fix(#2761): count bracket headings, and retire them, in both derivations

Both `total_phases` derivations select their grammar from the resolved
convention, in one commit — cmdStateSync already carries the comment that it
mirrors buildStateFrontmatter "so both report consistent percents (#3242 Bug B)",
so teaching one and not the other ships that divergence.

The #1514 retirement filter widens WITH the counter it protects. The canonical
gesture strikes the checklist BULLET and leaves the detail heading intact, so a
bracket-form retirement went undetected and the phase stayed in the denominator
forever. That is half a fix alone: the retired key is compared against
phaseKeyFromDir, which called extractPhaseToken with no convention. Both halves
land here.

Under bracket the sentinel token rule composes as the full engine set {0, 999},
so this counter agrees with `roadmap analyze`, which has always excluded both —
otherwise the two derivations report different numbers for one ROADMAP and the
changeset's "excluded from every count" is false as written. The LEGACY path
keeps its pre-existing 999-only rule: widening it there would move legacy totals,
so the two stay split off the bracket path exactly as they are today.

The sync-side assertion reads the PERCENT sync writes into the STATE.md body, not
the frontmatter total_phases. Sync's own counter never reaches that field — the
read derivation writes it — so asserting the frontmatter after a sync measures the
read path twice and lets a mutation to the write-path guard survive.

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

* feat(#2761): verify.cts bracket-coherence W021 + selected milestone-complete read

The shipped milestone-prefixed W021 gate keeps its ROOT-only config read,
verbatim base semantics. Federating it silently moved a legacy convention's
answer in BOTH directions on workstream repos — a W021 that fires at base
vanishing, and one that is silent at base firing. resolvePhaseIdConvention
governs the new bracket-selection reads only.

B6, the milestone-complete check, keeps its ungated POSTURE (bug-557 pins it
with an empty config) but selects its grammar from the convention. Inferring
'bracket' from the shape of a matched bracket ran a repo-failing check against a
legacy ROADMAP that merely contained `### [RFC.2119] 5:`. Directory resolution
widens with the heading read, so a bracket repo whose phases are on disk stays
silent, and a bracket sentinel is not reported as unstarted.

checkBracketCoherence is advisory and gated. Anchored to tokenizeHeadings so
fenced examples cannot warn and heading level is structural. Its scope rules each
close a way it silently did nothing or fired wrongly: only a genuine MILESTONE
heading opens or closes a section (a `### Notes` used to reset scope and disable
both sub-checks); a legacy `## v3.0` DOES close it; an M-NN or letter-suffixed
phase heading raises missing-bracket and CONTINUES; a bare `#### 2026:` is not a
phase; the full h2-h6 range is processed. Its section recognizer shares the one
milestone width, so an unpadded `### [GSD.3] 05:` can no longer be a phase to the
id grammar and a section to the section grammar at once, silently re-scoping
every warning after it.

validate consistency suppresses bracket sentinels in its missing-directory
warning — the two verbs disagreed, health suppressing via notStartedPhases while
consistency did not. The legacy reading is untouched, including its pre-existing
wart that `### Phase 999:` still warns there.

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

* fix(#2761): scope the milestone by its bracket; select the disk-side filter

Two roadmap-parser reads, both of which made a bracket project's totals track
the disk instead of the ROADMAP.

The ADR pins the bracket milestone heading as `## [GSD.02] Foundation` — a name,
no version — but scoping matched STATE's `milestone: v2.0` STRING against a
heading, so the canonical form matched nothing and total_phases fell back to the
directory count. The rule was re-derived in THREE places: extractCurrentMilestone
plus two `milestoneBounded` guards; fixing one left the others falling back
regardless, so they are now one gated helper. It matches the CANONICAL padded
spelling only — accepting `0*N` bounded a milestone whose phases were invisible,
which un-suppressed a progress percent computed off an unscoped disk count.

getMilestonePhaseFilter's heading scan becomes the 14th selected read. On a
bracket ROADMAP it collected nothing, so the filter degraded to pass-all and
buildStateFrontmatter counted every other milestone's directories — making the
bracket convention strictly worse than the M-NN one it supersedes on the property
that matters most: totals must track the ROADMAP, not the disk.

The DIRECTORY side of that same filter is selected with it. Teaching only the
heading scan was half a fix and a worse one: `milestonePhaseNums` became
non-empty, so the pass-all degrade stopped firing, but no bracket directory could
satisfy the three legacy dir checks (numericRe fails on `GSD.02-05-five`, the
custom-id match captures the project code `GSD`, and stripProjectCodePrefix does
not strip a dotted prefix). Every bracket directory was rejected, and
completed_phases / total_plans / completed_plans / percent all collapsed to 0
while `state sync` went on writing a percent off the unfiltered disk — `state
json` reporting 0% on the same repo, in the same second, that STATE.md's body
called 67%. That is the #3242 Bug B divergence this PR exists to avoid, and
total_phases could not show it: `Math.max(phaseDirs.length, roadmapPhaseCount)`
floors it at the ROADMAP count no matter how many directories are rejected.

The dir side matches on the milestone-QUALIFIED id, delegated to the owner's
gated `phaseTokenMatches(dir, id, 'bracket')`, not on the bare token: READING-B
puts the milestone in the bracket, so `GSD.01-01-old-one` and `GSD.02-01-one`
share the token `01` and only the qualified key separates them. The qualified ids
are kept in their own set — a hyphen in `milestonePhaseNums` would flip
`roadmapUsesHyphenedIds` and silently move the LEGACY dir path on a bracket repo
— and the branch is ADDITIVE: on a miss it falls through to the three legacy
checks, so a bracket project carrying legacy-shaped directories reads unchanged.

Both are resolved lazily and gated, so the legacy path pays neither a config read
nor a second scan and cannot change answer. The scoping call is also GUARDED:
resolvePhaseIdConvention reaches planningDir, which throws a plain Error for a
GSD_PROJECT/GSD_WORKSTREAM segment carrying `/`, `\` or `..`. At base the only
planningDir call in extractCurrentMilestone sits inside the STATE-read try, so
the function returned normally on such an environment; an unguarded one here let
that escape and broke the never-throws invariant that getRoadmapPhaseInternal and
getMilestoneInfo three hundred lines below carry #2245 / ADR-227 notes about.
Unreachable through the CLI — GSD_WORKSTREAM is rejected up front by the
workstream-name policy and GSD_PROJECT throws identically at base — but reachable
by any in-process embedder, which is precisely who that invariant is for. The
filter's own resolve call was already inside its try and is unaffected.

The milestone-qualified key is formed only for a token that is itself a bracket
phase token. `${bracketId}-${token}` is a string SPLICE, so a mid-migration
heading carrying an M-NN label — `### [GSD.02] Phase 02-01:` — spliced to
`GSD.02-02-01`, which the qualified-key grammar reads as milestone 02 / phase 02:
the `-01` truncated, both such headings collapsing to one key, and the heading
claiming `GSD.02-02-two`, the directory it does NOT name, while rejecting
`GSD.02-01-one`, the one it does. The guard drops those headings back to the
unqualified legacy path, restoring the base ACCEPTANCE VECTOR exactly — pinned
against the milestone-prefixed reading of the same ROADMAP, which is
base-identical on this shape.

Scoped precisely, because the fixture moves one number that the guard does not
touch: `total_phases` on it reads 1 at base and 2 here. That is the bracket
heading COUNT this PR exists to add, not the splice — measured identical with and
without the guard, and identical to what the canonical `### [GSD.02] 01:`
spelling does on the same fixture (both read 2 with zero directories on disk,
where base reads 0). The claim is base-equivalent ACCEPTANCE, not a
base-equivalent reading.

One consequence is stated rather than fixed: a heading whose token carries a
hyphen still puts that hyphen into milestonePhaseNums and so still flips
`roadmapUsesHyphenedIds`. Base does the same for that spelling, so preserving it
is what keeps the shape base-equivalent; excluding the token would have moved
answers versus base on malformed input. The comment at the qualified-set
declaration is corrected to claim only what is true — it keeps QUALIFIED IDS out
of that flag's input, not hyphens in general.

The oracles ship with it, and they are the five numbers, not the one: the parity
gate now asserts total_phases, completed_phases, total_plans, completed_plans AND
percent, on both derivations, on two fixture shapes (one milestone; two
milestones with stale prior-milestone directories on disk). The oracle is the
flat-legacy twin, built in the same test run and compared number for number,
plus exact literals so a shared wrong answer cannot pass.

The oracle SUBSTITUTION is itself pinned. The M-NN spelling of these shapes could
not serve, because buildStateFrontmatter's #2445 de-dup key captures only a
directory's leading integer and collapses `02-01-one` / `02-02-two` /
`02-03-three` to one — measured [3,0,1,0,0] against the flat-legacy twin's
[3,2,3,2,67], identically at base and before this fix, and structurally
unreachable from the bracket key space. That reasoning is only sound while it
stays true, so a characterization test holds the M-NN reading down on the two
numbers that do not depend on which directory wins the mtime race. Widen the
de-dup key and it fails, instead of quietly invalidating the changeset's
disclosure.

Also adds the call-site pin. The structural table pins transcription against the
selector; it cannot see a call site whose BASELINE ARGUMENT is wrong. Flipping
verify.cts's milestone-complete site to the wider baseline grants a
fires-on-every-repo check tolerance it has never had, and every behavioural test
still passed. The pin reads the shipped sources and asserts the mode at each of
the 14 sites, count-exact.

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

* test(#2761): pin the bracket read surfaces in the parity gate

This gate exists because #2043 fixed one bug across five hand-edited copies of a
rule and #2232 was the residual that survived, because a later reader could not
tell the copies were one rule. PR-2 adds two consumers, so they belong here.

Surface 7 — the heading read and the directory read must agree about WHICH phase
a `MM-<seg>` pair names, across the shared width corpus, and the bracket and
legacy spellings of one heading must yield the same token.

Surface 8 — the two bracket directory readers, in BOTH directions. Agreement on
ACCEPTED input was already pinned; agreement on REJECTED input is where they
actually diverged.

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

* chore(#2761): changeset

Disclosures for the PR body (deliberate, not defects):

- phase_id_convention is not a CONFIG_DEFAULTS key, so loadConfig drops it and
  cannot serve as the convention resolver however the file is federated. This PR
  ships its own workstream->root resolver; adding the key and its value enum is
  later-slice work.
- Convention matching is strictly === 'bracket'. A misspelled value reads as
  not-configured and the project keeps legacy behaviour silently.
- An UNPADDED bracket milestone (`[GSD.2]`) is malformed: it scopes nothing,
  bounds nothing, sections nothing, and is not a phase id. W005 on its
  directories is the surfacing signal.
- WIDTH UNIFICATION MOVED FOUR MERGED PR-1 EXPORT ANSWERS on non-canonical
  inputs, none of which toDir can emit and none of which had a bracket caller at
  base:
    isSentinelPhaseId('GSD.0-01',    'bracket')  true  -> false
    isSentinelPhaseId('GSD.0999-01', 'bracket')  true  -> false
    getMilestoneFromPhaseId('GSD.2-01',   'bracket')  'v2.0' -> null
    getMilestoneFromPhaseId('GSD.002-01', 'bracket')  'v2.0' -> null
  The canonical pad2 sentinel spelling `[GSD.00]` still tests true.
- FLAG TO MAINTAINER: docs/adr/612:132 reads "Sentinel behavior (0.x / 999.x ->
  milestone null) is preserved". After the unification that holds for the
  canonical `00` spelling only, not for a bare `[GSD.0]`. ADR wording is yours;
  flagging the tension rather than editing it.
- The bracket sentinel rule COMPOSES with the legacy one — a bracketed heading is
  a sentinel when its bracket milestone OR its token is reserved. Under bracket
  the state-side token rule is the full {0, 999} set so both derivations agree;
  the LEGACY path keeps its pre-existing 999-only rule, unchanged.
- validate consistency's legacy reading is untouched, including the pre-existing
  wart that `### Phase 999:` warns there while validate health suppresses it.
- find-phase still cannot resolve a bracket phase directory. phase-locator.cts is
  outside this PR's module set. Sibling PR #2559's matchPhaseDirs calls
  phaseTokenMatches without a convention, so whichever slice lands second must
  thread it through.
- Four of the five bracket readers scan raw ROADMAP content, so a bracket heading
  inside a fenced code block is read as a phase. Pre-existing for the legacy
  spelling; parity, not a new class.
- roadmapPhaseLookupSources gained no bracket source: nothing emits a
  milestone-qualified query into it yet.
- roadmap validate remains a separate, unfederated convention reader.
  Pre-existing and base-identical, but two verbs can disagree about the active
  convention on one project.
- _diskScanCache keys on cwd while the values it caches are now
  convention-dependent. Not reproducible through the CLI; pre-existing for the
  workstream dimension, widened here. Stated as inconclusive.
- A ROADMAP written in bracket form before config.json is switched reads as empty
  rather than mis-counted — the deliberate migration-window trade.
- THE READ AND WRITE PERCENTS STILL DIVERGE ON A MULTI-MILESTONE REPO, and that
  divergence is MIRRORED under bracket rather than closed. buildStateFrontmatter
  applies the milestone filter; cmdStateSync does its own fs.readdirSync and never
  calls it, so on a repo carrying prior-milestone directories the read path
  reports the SCOPED percent and the sync body reports the WHOLE-DISK one.
  Measured on the true base build (d04592de), flat-legacy spelling, 3 in-scope
  phases with 1 complete plus 2 stale prior-milestone dirs: `state json`
  [3,1,3,1,33], sync body 60%. The bracket twin of that repo now reads the same
  two numbers — 33 and 60. Scoping the sync counter would move every legacy
  repo's percent, which a bracket read-path PR must not do. The gate pins both
  sides, so the mirror cannot silently become a one-sided fix.
- THE PARITY ORACLE IS THE FLAT-LEGACY TWIN, NOT THE M-NN ONE, and that is a
  measurement finding rather than a preference. buildStateFrontmatter's #2445
  de-dup key captures only a directory's LEADING integer, so the M-NN dirs
  `02-01-one` / `02-02-two` / `02-03-three` all key to `2` and two of the three
  are dropped before they are ever counted: base reads [3,0,1,0,0] where the
  flat-legacy twin of the same repo reads [3,2,3,2,67]. Present identically at
  base and at HEAD, untouched here, and structurally unreachable from the bracket
  key space — `GSD.02-01-one` does not match that pattern at all, so every bracket
  directory keys to its own name. The source line already carries a
  `phase-id-owner:` sanction recording the divergence. Mirroring it under bracket
  would mean manufacturing a collision that cannot occur, so the gate compares
  against the flat-legacy spelling, which is uncontaminated. This paragraph is
  itself pinned: a characterization test holds the M-NN reading on the two
  numbers that do not depend on which directory wins the mtime race, so widening
  the de-dup key in a later slice fails the suite rather than silently making
  this disclosure false.
- THE `phaseTokenMatches` CALL-SITE CENSUS, stated so the remaining gaps are
  auditable rather than implied. 13 call sites outside the owner (phase-id.cts).
  THREE are three-argument: verify.cts:2229 (the W021 milestone-complete read,
  already was), roadmap.cts:436 (`roadmap analyze`'s directory lookup, threaded
  by this PR) and roadmap-parser.cts:792 (the disk-side milestone filter, added
  by this PR). The other TEN are two-argument and stay that way — phase.cts ×5
  (220, 277, 444, 585, 1547), phase-locator.cts:62, smart-entry.cts:243,
  init.cts:1414, milestone.cts:551 and verify.cts:2467. All ten are untouched by
  this PR and base-identical.
  One of them sits in a file this PR DOES edit, so it is named rather than left
  to a reader's grep: verify.cts:2467, `verify schema-drift <phase>`. Measured on
  a bracket repo across base / pre-fix branch / this HEAD, all three agree on all
  three argument forms — `verify schema-drift GSD.02-01` and `… 01` both report
  "Phase directory not found" on every build, and `… GSD.02-01-one` resolves on
  every build through the exact-directory-name fallback. So the user-visible
  shape of what stays broken is: a bracket phase is addressable there by full
  directory name only, exactly as at base. Threading the convention into a
  function this PR never touched, in the last round before ship, is the wrong
  trade; it is where the same one-argument fix goes next, alongside
  milestone.cts:551 and init.cts:1414.
- A BRACKET HEADING WHOSE TOKEN CARRIES A HYPHEN (`### [GSD.02] Phase 02-01:`,
  a mid-migration spelling) forms NO milestone-qualified key, and therefore
  scopes through the unqualified legacy path — base-equivalent ACCEPTANCE, which
  is the claim, and not a base-equivalent reading: `total_phases` on that shape
  moves 1 -> 2 for the same reason it moves on the canonical `### [GSD.02] 01:`
  spelling, because counting bracket headings is what this PR does. Such a token
  still flips `roadmapUsesHyphenedIds`, as it also does at base. The comment at
  the qualified-set declaration now claims only that narrower, true thing.

The `pr:` field carries the sub-issue number as a placeholder — it must be
updated to the real PR number when the PR is opened.

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

* chore(#2761): point the changeset at PR #2867

* test(#2761): fast-check properties for the convention-selection layer

CONTRIBUTING.md mandates a generative property test for parser/bijective-contract
changes; PR-2 shipped six example-based files and none. This adds the missing
layer, scoped to what PR-2 actually contracts — WHICH pattern each reader
compiles, decided by the resolved `phase_id_convention` — rather than restating
PR-1's grammar round-trip properties, which already live in
tests/adr-612-bracket-grammar.test.cjs.

Four properties: P1 an opted-in repo reads the ADR-canonical label-less bracket
heading/dir and a non-opted-in repo is byte-blind to the identical input; P2
every non-bracket convention agrees with the hand-transcribed BASE source over
generated content, including bracket-DOTTED legacy prose (`[RFC.2119] 5:`) that
must never be claimed as a phase; P3 nine per-field mutations are rejected and
the one case variation folds instead; P4 both sides of a phase comparison derive
the same key under the same convention.

Generators template every input from raw primitives — nothing is seeded through
renderPhaseId/toDir, the p2() tautology that made #2258 round 1's property test
structurally unable to find B1. Domain reaches past 99 into the 3+-digit branch
(round 2's numArb-capped-at-99 miss), forces sub-phases in at weight, and pins
both sentinel milestones.

Falsified against the COMPILED lib, not the source: five deliberate mutants
(gate never fires; gate always fires; milestone width widened to \d+; the #612
convention forwarding dropped from phaseKeyFromDir; extractPhaseToken's bracket
branch ungated) each fail the specific property that should catch them —
16/2, 16/2, 15/3, 17/1, 17/1 pass/fail — and the lib restores byte-identical.

An earlier draft of P2 held vacuously: its base regex omitted the markdown
furniture the selected one carried, so every realistic `### Phase NN:` line
matched neither side. The gate-always-fires mutant did not kill it. Both are now
compiled through one function, and that mutant kills P2.

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

* test(#2761): adversarial malformed bracket tokens across the tolerant readers

The existing boundary coverage stopped at shapes the emit grammar rejects
(unpadded `[GSD.3]`, wrong-case, `12A`). It never exercised a STRUCTURALLY
broken token — a non-numeric milestone, a bracket that never closes, a bracket
nested in another — which is the input a tolerant reader is most likely to
half-read, and the one the PR's own regex commentary is explicit about.

read-tolerance (roadmap heading scan + validate's dir and variant builders):
ten malformed headings, each asserted to be read as a phase by NO convention and
to give the opted-in repo the same answer as the legacy one; the corpus driven
through `roadmap analyze` end to end; malformed DIRECTORY names asserted
unrecognized and non-throwing on all four conventions; and the two variant
builders asserted to agree, since a widening that reaches only one splits
`validate consistency` from `validate health` (the #3242 Bug B shape).

coherence (verify.cts W021): the same six broken shapes asserted to raise no
W021 of their own AND not to re-scope the W021 that follows them — the G2
failure mode reached from a different shape, where a heading that is not a phase
but IS read as a section silently moves later warnings onto the wrong milestone.

Both files gain a pathological-input time bound. Nested quantifiers over a long
unclosed bracket are the classic ReDoS shape and two commits on next (#2828,
#2944) were CodeQL-flagged for exactly that, so the bound is asserted rather
than argued from reading the pattern. The probes themselves parse no regex.

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

* docs(#2761): document "bracket" as a phase_id_convention value

The row listed only `"milestone-prefixed"` and `null`, so after two shipped
slices (#2258 grammar, this PR's read path) the convention had no documented
enum value. CONFIGURATION.md is also a top-10 historical co-changer of both
src/verify.cts and src/state.cts and was absent from this PR.

The row states the boundary rather than the ambition: `"bracket"` changes the
READ path only, there is no migrator and no emit yet, and a project on any other
value compiles the patterns it compiled before. That keeps the docs honest for
the two releases before PR-3 and PR-4 land, instead of describing a convention a
user cannot yet migrate to.

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

* chore(#2761): retype the changeset Added, drop the docs-exempt marker

`Fixed` was wrong by CONTRIBUTING.md's own definition — a fix restores
documented behavior, and bracket read tolerance is the second slice of a
capability that did not exist before #2258. The type also carried a
`docs-exempt` marker, and `Fixed`/`Security` are exempt from the docs-required
lint, so the typing had the effect of routing around a gate this change should
pass. It now passes it: `lint-docs-required` returns ok_docs_updated on the
CONFIGURATION.md row added in the previous commit.

Body gains one sentence pointing at that row and restating that `"bracket"` is a
read-path opt-in until the migrator and write path land.

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

* test(#2761): pin the version-less bracket milestone scoping gap; narrow the claim

The changeset asserted that milestone scoping "recognises the ADR-canonical
`## [GSD.02] Foundation` heading and applies to the phase DIRECTORIES too." A
CLI probe on that exact heading form falsifies the second half: with no `vN.N`
in the milestone heading the directory side does not scope, and directories from
BOTH the prior and the later milestone are admitted. Measured 4 dirs counted
where the milestone declares 2.

Every bracket fixture in the suite writes `## [GSD.02] v2.0: …`, so nothing
covered the form the ADR actually specifies — and the state.cts doc comment
calls that version-less form canonical.

Mechanism, in extractCurrentMilestone: the bracket scope branch selects the
right currentSection, but `preambleCutoff` keys off a pattern requiring a
version or status emoji, so a version-less roadmap falls back to the current
milestone's own offset and every PRIOR milestone lands in the preamble — whose
phase-stripping regex only strips `Phase N:`-labelled headings, so bracket phase
headings survive it. Independently, `computeSectionEnd` accepts a boundary only
on a version/emoji heading, so the section runs to EOF and every LATER milestone
is swept in. Two sites, bidirectional.

Not fixed here: it changes milestone scoping, which is shared with the legacy
path. Five characterization tests pin today's reading plus a versioned CONTROL
proving the version string is the only difference, and the changeset sentence is
narrowed to what the code does. The DEFECT assertions are written to be
INVERTED by the fix, not deleted — that inversion is its regression proof.

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

* docs(#2761): re-anchor the branch's own cross-file line citations after the rebase

Three of this branch's code comments cite sibling call sites by line number, and
the rebase onto 178ec000 moved two of the three targets:

  roadmap-parser.cts  validate.cts:210 -> :218   (const g = capturing ? 1 : 0)
                      state.cts:1715   -> :1752  (const bg = … 'bracket' ? 1 : 0)
  roadmap.cts         verify.cts:2229  -> :2355  (phaseTokenMatches 3-arg form)

`state.cts:1715` had drifted 37 lines and now lands on the retirement skip, not
the capture-offset idiom the sentence is about — the citation read as evidence
for a claim the cited line does not support.

planning-workspace.cts's `config-loader.cts:618/:649` was checked and is still
correct; left alone.

Comment-only. Build, drift guard and the bracket suites re-run unchanged.

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

* fix(#2761): scope the version-less bracket milestone heading too (B1)

computeSectionEnd and the preambleCutoff scan in extractCurrentMilestone
(roadmap-parser.cts) only recognized a milestone boundary heading that
carried a vN.N token or a status emoji. The ADR-canonical bracket
heading (## [GSD.02] Foundation) carries neither, so on that shape
computeSectionEnd fell through to content.length (sweeping every LATER
milestone into scope) and preambleCutoff fell back to the current
milestone's own offset (leaking every PRIOR milestone's bracket phases
into the preamble, whose Phase-N: strip regex never matches them).

Under the bracket scope branch, both sites now also accept a
`#{1,2}\s+\[CODE.MM\]` boundary, built from phase-id.cts's BRACKET_ID_SRC
(single owner of the bracket-id grammar) rather than a re-typed literal.
`#{1,2}` is the deliberate discriminator: a bracket PHASE heading is
level 3 and shares the same `[CODE.MM]` prefix, so a `#{1,3}` boundary
would swallow it too. Reachable only when bracketScopeConvention ===
'bracket' was already resolved (i.e. the bracket scope branch actually
fired), so version-bearing/emoji headings and non-bracket conventions
take the exact pre-existing code path byte-identically — confirmed by
the full adr-612 suite staying green.

Inverts the four DEFECT assertions in the
"#612 PR-2 CHARACTERIZATION: a version-less bracket milestone does not
scope" describe block (tests/adr-612-bracket-phase-counting.test.cjs)
into their regression-proof form, per the block's own doc comment, and
reframes the describe title/comments accordingly. Corrects the
.changeset/2761-bracket-read-tolerance.md fragment, which described the
directory-side version-less gap as an open, un-closed bound.

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

* fix(#2761): thread sentinelPhases into validate health's W006 loop (B2)

cmdValidateHealth's W006 loop (src/verify.cts) destructured only
roadmapPhases from buildRoadmapPhaseVariants, not sentinelPhases —
unlike cmdValidateConsistency, which already skips sentinelPhases with
the identical guard a few hundred lines up. A heading-only bracket
icebox/pre-milestone entry ([GSD.999] / [GSD.00]) therefore gained a
false W006 "no directory on disk" from validate health while validate
consistency correctly stayed silent on the very same ROADMAP — the two
validators contradicting each other.

Threads sentinelPhases through and skips it before the existsOnDisk
check, mirroring the consistency guard exactly. Gated the same way
sentinelPhases already is (empty unless phase_id_convention is
'bracket'), so a legacy repo's W006 reading — including its own
pre-existing wart where a legacy `### Phase 999:` still warns on both
verbs — is untouched; confirmed by the existing "INHERITED WART,
unchanged" test staying green.

Adds the paired-agreement regression test (#612 PR-2 B2 describe block
in tests/adr-612-bracket-read-tolerance.test.cjs): a sentinel-only
bracket roadmap must produce no missing-directory warning from EITHER
validator, plus a CONTROL proving a real phase with no directory still
warns on both. Confirmed red (health false-W006) against the pre-fix
code before applying the fix.

Corrects the .changeset/2761-bracket-read-tolerance.md fragment, which
described the asymmetry as already closed and in the wrong direction
(it credited validate health with already staying silent, when health
was the one falsely warning).

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

* test(#2761): pin mixed-shape preamble cutoff and boundary heading levels

Closes two self-flagged coverage gaps in the B1 fix (commit 08d5b0c4)
ahead of adversarial review. No src change — all three new tests are
green against the code as committed.

1. earliest-of-either preambleCutoff comparison: only exercised where
   the version/emoji match and the bracket match happen to land on the
   same heading. Adds the mid-migration mixed shape (version-bearing
   PRIOR + version-less CURRENT) and asserts scoping outcomes (accepts
   booleans + total_phases), not internals.

2. `h.level <= 2` conjunct in computeSectionEnd: provably redundant
   whenever the selected milestone heading is level 2 (every existing
   fixture), since `h.level > level` alone already implies it there —
   a mutant deleting the conjunct would have survived every prior test
   in this file. Adds a level-3 CURRENT-heading fixture (with a real
   PRIOR milestone so the preamble side-channel can't independently
   rescue the truncated phases) that makes the conjunct's deletion
   test-visible, confirmed by hand-mutating a throwaway copy of the
   compiled output (never touching tracked src or the real build) and
   observing the assertion flip. Also pins a level-1 companion case
   (#{1,2} tolerance, not just level 2).

NOT included here: the other mixed-shape direction (version-less PRIOR
+ version-bearing CURRENT) turned out to be a genuine, currently-unfixed
gap — reported separately rather than silently patched or weakened, per
instruction not to touch src while a probe run is in flight.

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

* fix(#2761): engage bracket boundaries when the current milestone heading is version-bearing (B3, self-caught)

Found during round-2 self-verification of B1 (commit 08d5b0c4), while
closing the mixed-heading-shape coverage gaps flagged in my own review
notes. The B1 fix resolved `bracketScopeConvention` only inside the
`if (headingMatches.length === 0)` gate that also drives SELECTION's
own bracket fallback (which heading counts as "current"). That gate is
correct for selection, but `bracketScopeConvention` also feeds
computeSectionEnd's and preambleCutoff's boundary detection further
down — which accidentally inherited selection's gate instead of having
its own.

Trigger shape: the CURRENT milestone heading is itself version-bearing
(`## [GSD.02] v2.0: Current Milestone`), so the primary version-string
match succeeds immediately — headingMatches.length !== 0 from the very
first check — and the entire bracket-resolution branch was skipped. A
sibling milestone (PRIOR or LATER) that is version-less then got
neither the version/emoji boundary rule (it has none) nor the bracket
boundary rule (never resolved), reproducing the original #612 defect
(total_phases falling back to the whole-disk count) through a
structural shape B1's own fixtures never exercised — every one of them
is uniformly version-bearing or uniformly version-less across all
three milestones, never mixed with CURRENT specifically being the
version-bearing one.

Fix: resolve `bracketScopeConvention` unconditionally, decoupled from
`headingMatches.length`. SELECTION is deliberately left untouched — the
`if (headingMatches.length === 0 && bracketScopeConvention === 'bracket')`
fallback that picks which heading is "current" keeps its original gate
byte-for-byte (confirmed by diff: that line is unmodified). Only the
convention *resolution* moved out from behind it, so boundary detection
can consult it regardless of which branch selected the heading. The
extra `resolvePhaseIdConvention` call this now costs on every
invocation (previously paid only when the version match found nothing)
is the accepted cost: a non-bracket repo still resolves to something
other than 'bracket' (or null on a poisoned env, caught exactly as
before), so `bracketMilestoneHeadingRe` stays null and every downstream
branch is byte-identical to today — confirmed by the full adr-612 +
roadmap-parser + state + verify + health-validation suite staying green
(1260/1260) and the all-version-bearing/legacy fixtures showing no
behavior change.

TDD: tests/adr-612-bracket-phase-counting.test.cjs describe block
"#612 PR-2 B3: bracket boundaries engage even when CURRENT is
version-bearing but a sibling is not" — 4 tests, confirmed red against
pre-fix code (leak-in booleans true/true, total_phases 4) before this
change, green after.

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

* fix(#2761): reject same-milestone continuation headings as boundaries (B1)

Gate-2 adversarial review Blocker 1: the B1/B3 boundary fired on ANY
as the one currently selected — a version-less checklist/detail split
(`## [GSD.02] Foundation (Phase Details)`, or an ad-hoc continuation
heading) truncated the current milestone's own section instead of
being recognised as a continuation of it. The `(Phase Details)`
re-append only searches VERSION-STRING matches, so a version-less
continuation heading was cut out and never re-appended — a confidently
wrong, non-degraded phase count for a still-incomplete milestone
(repro8 case 1: 1/1/100 instead of 2/1/50; repro5: same, on a fully
version-less roadmap with no sibling milestones at all).

Introduces one shared helper, isBracketMilestoneBoundary(headingText,
level, selectedBracketId), used by both computeSectionEnd and the
preambleCutoff bracket scan, replacing the ungated `h.level <= 2 &&
bracketMilestoneHeadingRe.test(...)` inline check. `selectedBracketId`
(case-folded via phase-id.cts's foldBracketId, matching the branch's
own fold-before-identity convention) is derived from `selected[0]`,
which is the full matched heading line on BOTH selection paths
(version-string and bracket-fallback), so one extraction covers both.

Level cap stays at `level > 2` for now (temporary — ADR-612's content
discriminator replaces it in the next commit); same-milestone rejection
is the change this commit is scoped to.

DEVIATION from the reviewed plan, caught empirically: applying the
same-milestone rejection at the preambleCutoff site (as literally
specified) regressed an existing pin ("boundary heading level: a
level-1 CURRENT milestone heading also scopes correctly") and a
fenced-heading case (repro10 A3) — because preambleCutoff's job is
"where does the earliest milestone-shaped heading sit, scanning from
the TOP of the document," and the selected heading's own occurrence is
always a correct answer to that question regardless of same-id-ness;
rejecting it let the earliest-of-either comparison fall through to a
stray LATER heading instead. `selectedBracketId` is threaded through as
`null` at the preambleCutoff call site for this reason — bracket-shaped
(and, from the next commit, phase-tail) discrimination still applies
uniformly at both sites; only the same-milestone component is
call-site-specific, since it encodes a "keep scanning past this
heading" instruction with no counterpart in a top-of-document search.

Tests: new describe block "#612 PR-2 B1 round-2: a same-milestone
continuation heading is not a boundary" — RED-turned-GREEN fixtures for
repro8 case 1 and repro5, plus PINs for repro8 case 3 (trailing
different-id icebox still terminates) and repro10 A1 (all-version-
bearing + icebox + Phase Details stays exactly 2/1/50 — no double-count
from the same-milestone exclusion interacting with the pre-existing
detailsMatch re-append). syncedTotal()/syncedPercent() assertions
omitted from the repro10 A1 pin: that fixture carries dirs outside the
current milestone, which exposes the SEPARATE Major 1 defect
(cmdStateSync's body percent from an unfiltered disk scan) — asserted
once Major 1 is fixed, not here.

Full suite green (796/796 across the targeted adr-612 + roadmap-parser
+ state files); node scripts/lint-phase-id-drift.cjs clean; eslint
clean on both changed files.

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

* fix(#2761): bracket boundary discriminates by content, not heading level (B2)

Gate-2 adversarial review Blocker 2: three sites disagreed about which
heading levels are a bracket milestone. The selector
(roadmap-parser.cts's bracket-fallback SELECTION branch,
`^#{1,3}\s+\[CODE.MM\]`) and `isMilestoneBounded` (state.cts) both
admit level 1-3, but isBracketMilestoneBoundary's level cap only
admitted level 1-2 (`h.level <= 2`, from the B1 commit). A `###`-level
bracket milestone heading was therefore SELECTED and BOUNDED but never
TERMINATED: computeSectionEnd ran with level=3, a level-3 SIBLING
milestone survived the pre-existing `h.level > level` (not-deeper)
filter, failed the version/emoji test (version-less), then failed
`h.level <= 2` — falling through to `return content.length` and
sweeping the sibling milestone's own phases into the current one.
Reproduces trek-e's original #612 defect verbatim ("a safe degrade
became a confidently-wrong persisted number") on a heading level the
selector and bounding predicate both already admit (repro2 case C:
4/75% instead of 2/100%; mechanism confirmed directly via repro7 —
extractCurrentMilestone returned the whole 214-byte document).

ADR-612 Decision 1 (docs/adr/612-bracket-phase-id-convention.md:56)
specifies the discriminator as CONTENT, not level: "a phase heading is
a bracket followed by a digit-then-colon ([GSD.02] 05:); a milestone
heading is a bracket followed by a name." Replaces the `level > 2`
rejection with BRACKET_PHASE_TAIL_RE — built by interpolating
phase-id.cts's single-owner phaseHeadingPrefixSrcFor(ANY_BRACKET,
'bracket', false) plus the digit + optional-tag + colon tail every
phase-heading counter in this file already spells, not a re-typed
grammar — and widens the level check to a depth-sanity cap of 3
(mirroring the selector's own `#{1,3}` ceiling; NOT itself a
phase/milestone discriminator). Covers the dotted sub-phase heading
form (`[GSD.02] 05.03:`) via the same `[\w][\w.-]*` token, pinned by a
new fixture — the shape where a regex slip in the tail grammar would
hide.

preambleCutoff's own raw-scan regex is widened from `^(#{1,2})` to
`^(#{1,3})` in lockstep: the outer pattern's level ceiling must track
the helper's cap, or a level-3 PRIOR milestone heading is invisible to
that scan and its own phase heading leaks into the preamble
un-stripped (a real double-count this widening closes, verified
against repro2 case C directly).

The existing "boundary heading level: a level-3 CURRENT milestone
heading still scopes correctly" pin (3e562f12) now passes via a
DIFFERENT mechanism than before — its own neighbours are version-
bearing, so it previously passed via the version/emoji rule (the level
cap was never actually exercised by that fixture, per the round-2
review's own finding); with the content discriminator, the SAME
fixture's level-3 phase headings are now correctly excluded because
they are phase-tail-shaped, not because they are too deep. A
deliberate mechanism change, confirmed by re-running that test green
after this commit.

Also updates the "every selector call site declares the right
baseline" governance pin (adr-612-bracket-heading-selection.test.cjs):
BRACKET_PHASE_TAIL_RE is a new, legitimate ANY_BRACKET call site in
roadmap-parser.cts (always passing the literal 'bracket' convention,
since its only caller is already gated on bracketBoundaryActive) —
EXPECTED count bumped 1->2, with a matching BASE_SITES transcription
entry (identical src to every other ANY_BRACKET site, since the
function is pure).

Tests: new describe block "#612 PR-2 B2 round-2: the bracket boundary
is a CONTENT discriminator, not a level cap" — RED-turned-GREEN for
repro2 case C (exact total AND truthful percent, since
isMilestoneBounded already returns true at #{1,3}) and repro7's
mechanism, a PIN for the dotted sub-phase form, and a re-pin of repro8
case 3 (icebox) under the new mechanism.

Full suite green (907/907 across the targeted adr-612 + roadmap-parser
+ state + phase-id files); node scripts/lint-phase-id-drift.cjs clean;
eslint clean on all changed files.

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

* fix(#2761): fence-aware preamble cutoff on the bracket branch (Blocker 3)

Gate-2 adversarial review Blocker 3: preambleCutoff's bracket scan used
a raw content.match/matchAll — blind to fenced code blocks — while its
sibling computeSectionEnd (a few lines above it) already consumed
tokenizeHeadings(content), which strips fences. The two halves of one
boundary semantic disagreed about what a heading is.

A fenced markdown example in the preamble containing a bracket heading
(ADR-612's own docs do exactly this) was textually the earliest
`#{1,3} [CODE.MM]` match: preambleCutoff landed INSIDE the fence,
`preamble = content.slice(0, preambleCutoff)` ended with an unclosed
opener, and the unbalanced fence then blinded
getMilestonePhaseFilter's own tokenizeHeadings(scope) call — every
heading in the returned scope vanished, phaseCount degraded to 0, and
the pass-all filter admitted every directory on disk (repro11's
mechanism, confirmed directly: fence count 1/odd, tokenizeHeadings(scope)
-> only "Roadmap"). Regression vs round-1, which had no bracket pattern
to blind and so fell back to the correct heading (repro12 bracket row:
2/1/50 at round-1, 4/3/75 at HEAD).

Fixed by hoisting one tokenizeHeadings(content) call
(currentMilestoneHeadings) shared by computeSectionEnd and the
preambleCutoff scan, which now iterates that same fence-aware token
list instead of a raw regex. HeadingToken.text is already hash-stripped
and trimmed, so isBracketMilestoneBoundary needs no `^#{1,3}\s+`
re-derivation at this site (that spelling would not match h.text — a
note the round-2 review called out explicitly, confirmed while
porting). selectedBracketId stays `null` here, unchanged from the B1
commit's same-milestone-exclusion reasoning.

DISCLOSED, not fixed (explicitly out of scope per the round-2 review's
own minimal-fix note): the LEGACY (non-bracket) anyMilestonePattern
raw-match path shares the identical fence-blindness hazard and stays
byte-identical — a bracket repo whose preamble has a fenced
VERSION-BEARING heading still has the legacy raw-match win the
earliest-of-either min() (repro12's LEGACY control: 4/3/75, unchanged
across base/round-1/HEAD/this commit). Pinned here so a future reviewer
files this as a known, pre-existing gap rather than a new regression.

Tests: new describe block "#612 PR-2 Blocker 3 round-2: preambleCutoff
is fence-aware (bracket branch only)" — RED-turned-GREEN for repro12's
bracket row and repro11's mechanism (fence balance + non-degraded
phaseCount + correct per-directory admission), a PIN for repro12's
LEGACY control (the disclosed gap, explicitly unchanged), and a PIN for
repro10 A3 (a fenced heading INSIDE the current section must still not
terminate it).

Full suite green (1072/1072 across the targeted adr-612 + roadmap-
parser + state + phase-id + markdown-sectionizer files); node
scripts/lint-phase-id-drift.cjs clean; eslint clean.

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

* fix(#2761): scope cmdStateSync's disk scan by milestone under bracket (Major 1)

Gate-2 adversarial review Major 1: `state sync` wrote a Progress
PERCENT computed from an UNFILTERED whole-disk scan, beside the
milestone-scoped total_phases/completed_phases it writes into the same
STATE.md via the refreshed frontmatter (syncStateFrontmatter ->
buildStateFrontmatter, which has always applied getMilestonePhaseFilter
for the READ path). cmdStateSync's own `fs.readdirSync` chain (the
WRITE-path scan) never called the milestone filter at all, unlike
buildStateFrontmatter's identical-purpose scan. One command therefore
wrote two contradictory numbers into one file: on the ADR-canonical
version-less bracket fixture (4 dirs, 3 complete; asserted milestone =
2 phases, both complete), base wrote total_phases:2/completed_phases:2
(correct, from the READ derivation) alongside body Progress 75% (wrong
— from the unfiltered WRITE derivation; repro3).

Fixed by threading `getMilestonePhaseFilter(cwd)` through the same
`.filter()` chain buildStateFrontmatter already applies, gated on
`syncConvention === 'bracket'` (falling back to a pass-all predicate
otherwise) — so totalDiskPlans/totalDiskSummaries/diskCompletedPhases/
syncTotalPhases become milestone-scoped under bracket, byte-identical
under legacy.

DEVIATION (approved, stated plainly): an earlier phrasing of this fix
called for mirroring buildStateFrontmatter's filter UNCONDITIONALLY.
Implemented GATED instead — an unconditional filter would ALSO move
every LEGACY repo's persisted percent, since the milestone-scoping-vs-
whole-disk divergence this closes is engine-wide, not bracket-specific.
The gate keeps legacy byte-identical, which is the binding constraint:
this is a bracket read-path PR, not a legacy behavior change.

Nit 2 (informational, no code change): 10 calls to
extractCurrentMilestone on a legacy repo cost 10 config.json
existsSync + 10 readFileSync (0 before B3); accepted, unmemoized cost,
unaffected by this commit.

Also folds in two minors from the round-2 review:
- Corrects .changeset/2761-bracket-read-tolerance.md: the sibling-
  exclusion sentence now states it holds at any heading level 1-3 and
  across a milestone split over two headings (true again now that
  Blockers 1 and 2 are fixed); the percent sentence states plainly that
  `state sync`'s body percent is now milestone-scoped under bracket,
  and unaffected under legacy.
- Records the read/write scoping divergence at currentMilestoneRawRanges
  (src/roadmap-parser.cts) in a comment: it did not receive B1/B2's
  bracket boundary fixes, currently harmless (its only consumer falls
  back to whole-content mutation, and every mutation there is still
  Phase-labelled-only, not bracket-widened), but live the moment the
  write path is bracket-widened — flagged so a future PR closes it in
  lockstep with that work, not after.

Tests: 6 pre-existing tests in tests/adr-612-bracket-phase-counting.test.cjs
needed fixture updates, not logic changes — they used the default
single directory (`GSD.02-01-setup`, phase "01"), which the SENTINEL/
retirement/mixed-heading fixtures in those tests never declare as a
real phase (only 04/05/06/999/etc are declared). Before this fix,
cmdStateSync's unfiltered scan counted that off-roadmap directory
anyway; after this fix the milestone filter correctly excludes it,
which for several of these fixtures made `state sync` a no-op (the
computed 0% coincided with STATE.md's initial template default) and
broke `syncedTotal()`/`syncedPercent()`'s ability to observe anything.
Updated each to pass an EXPLICIT directory naming one of the fixture's
REAL declared phases, preserving each test's original numerator/
denominator intent. One test — "shape 2 WRITE" — was substantively
rewritten: it was a CHARACTERIZATION of the Major 1 bug itself ("the
DISCLOSED legacy gap, mirrored — not closed"), and now correctly pins
bracket closing to 33% (agrees with the read path) while legacy stays
at the disclosed 60% (unchanged, deliberately, per the gating decision
above).

Full suite green: `npm test` 1449/1449 (0 fail, 0 skipped, 0 todo,
single-shard "all" run — includes issue-2765-brace-expansion-lockfile
passing); `npm run lint:ci` clean (0 errors; 2 pre-existing timing-
assertion warnings in files this PR does not touch); node
scripts/lint-phase-id-drift.cjs clean; node scripts/changeset/lint.cjs
ok.

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

* fix(#2761): preambleCutoff identity is offset- and child-aware (round-3 Blocker 1)

Gate-2 round-3 re-verify Blocker 1 (NEW): the round-2 B1 deviation
(39c42a89) threaded `selectedBracketId` as the real value at
computeSectionEnd but as bare `null` at the preambleCutoff scan. The
deviation's rationale — "the selected heading's own occurrence is
always a correct earliest answer" — was right, but `null` disables the
same-milestone check for EVERY candidate, not just the selected one.
Any bracket-shaped heading earlier than the selected milestone was
accepted as a boundary regardless of identity: a same-id checklist/
overview heading preceding the version-bearing selected heading (cases
A, B — the version lands on the LATER half of a split, or a plain
overview heading with no "(Phase Details)" spelling), or a DIFFERENT-id
bracket-shaped PROSE heading with no children of its own sitting above
the current milestone's content (case D — `## [ADR.612] Heading
convention used by this roadmap`). In every case the region between
that false boundary and the real sectionStart was silently dropped —
a completed phase vanished and `state sync` persisted a confident 0%
where base and round-1 both correctly wrote 50%. Regression vs base
AND round-1 (not merely "under-fixed", per the round-3 review's own
severity note).

Fixed with two changes, both scoped to the preambleCutoff scan only
(computeSectionEnd already threads the real `selectedBracketId` and is
untouched):

(a) `h.offset === sectionStart` now bypasses BOTH the same-milestone
    check inside isBracketMilestoneBoundary (passing the REAL
    `selectedBracketId` for every other candidate) and the new child
    rule below — the selected heading's own position is definitionally
    the correct answer, so neither discriminator should run against it
    (rejecting it would mean rejecting the heading against ITSELF).
    Closes cases A and B — verified by the reviewer's own one-liner,
    reproduced here.

(b) New `bracketHeadingHasMatchingChild`: an otherwise-accepted
    candidate (bracket-shaped, not phase-tail-shaped, not the same id
    as the selected milestone) must ALSO have a next-strictly-deeper
    heading carrying its OWN bracket id to count as a boundary. This is
    what a genuine sibling milestone has (its own phase children share
    its bracket id — `## [GSD.01] Setup` / `### [GSD.01] 01: …`) and an
    unrelated bracket-shaped prose heading does not. A candidate with
    no such child at all (childless — e.g. an empty prior milestone, or
    one immediately followed by a same-or-shallower heading) degrades
    to NOT a boundary — over-inclusive, the safe direction: its own
    heading text stays in the preamble, contributing nothing to any
    phase count (not phase-shaped). Closes case D, which (a) alone does
    not — verified: without this rule, `[ADR.612]`'s prose heading is
    indistinguishable from a genuine prior sibling at this site.

As a side effect, also neutralizes Nit 2 (a colon-less `[GSD.02] 05`
heading spuriously terminating the preamble): a colon-less bracket
heading is not phase-tail-shaped so isBracketMilestoneBoundary alone
would accept it, but it is — precisely because it is malformed/
incomplete rather than a real milestone — childless, so the child rule
rejects it too. Pinned.

Known interaction with the fence-blind SELECTION path (disclosed by
the reviewer, not introduced here, tracked for the next commit): when
`sectionPattern` selects a FENCED version-bearing heading (an
extremely pathological shape — a fenced example whose text happens to
match STATE's asserted version), no token exists at `sectionStart`, so
the `h.offset === sectionStart` bypass never fires and the loop falls
through to the ordinary same-id / child-rule checks. This composes
with the round-3 Major 1 fix (next commit) rather than introducing a
new defect — SELECTION itself is untouched by any of this — but is
worth stating plainly rather than rediscovering.

Tests: new describe block "#612 PR-2 Blocker 1 round-3: preambleCutoff
identity is offset- and child-aware" — RED-turned-GREEN for cases A, B
(rv-attack1) and D (rv-attack1b) with syncedTotal()/syncedPercent()
assertions (the persisted 0% is the point), a PIN for a genuine prior
sibling with real children (still excluded), a PIN for a childless
prior sibling (degrades to not-cutting, over-inclusive/safe), a PIN
for the colon-less Nit 2 shape, and the reviewer's rv-mech1 mechanism
re-run as a proper test (scope now equals the full input document,
phaseCount 2, both dirs accepted).

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 937/937 pass (930 baseline + 7 new). node
scripts/lint-phase-id-drift.cjs clean; eslint clean on both changed
files.

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

* fix(#2761): fence-aware version/emoji half of preambleCutoff on the bracket branch (round-3 Major 1)

Gate-2 round-3 re-verify Major 1 (NEW): ff6bf0a8 (round-2 Blocker 3)
made the BRACKET half of preambleCutoff's "earliest milestone-shaped
heading" search fence-aware, but left the VERSION/emoji half a raw
`content.match` even on the bracket branch. A fenced VERSION-BEARING
example heading in a bracket repo's preamble (ADR-612's own docs
illustrate the LEGACY heading shape exactly this way, inside a fenced
authoring-guide block) was still textually the earliest match for that
raw regex, winning the min() and un-suppressing a wrong persisted 75%
that base correctly suppressed (rv-attack3c fixture C1: base
suppressed the percent entirely — `isMilestoneBounded` false — HEAD
wrote 75% where truth is 50%).

Fixed by deriving the version/emoji half from the SAME fence-aware
`currentMilestoneHeadings` token list as the bracket half, on the
bracket branch only — the exact `/^Phase\s+\S/i` / `/v\d+\.\d+|✅|📋|🚧/i`
pair `computeSectionEnd` already uses against `h.text`. The non-bracket
(legacy) path is untouched: it keeps the raw `content.match`, byte-
identical to before, including its own fence-blindness (repro12's
LEGACY control, pinned unchanged in the round-2 Blocker-3 test block —
not re-pinned here to avoid duplicating an already-covered assertion).

Not rated Blocker (per the review) because it is not a regression vs
round-1 and the fixture (a version-BEARING fenced example in a bracket
repo) is rarer than the already-fixed bracket-heading case; still
fixed now rather than disclosed, per this arc's own precedent (every
prior "disclose instead of fix" call in this PR has been overturned on
re-review).

Tests: new describe block "#612 PR-2 Major 1 round-3: preambleCutoff's
version/emoji half is fence-aware on the bracket branch" — RED-turned-
GREEN for case C1 (readTotal + syncedPercent, so the persisted 75% is
directly observed, not just the read-path total), PIN for case C2 (the
already-fixed fenced-bracket-heading shape, unchanged).

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 939/939 pass (937 + 2 new). node scripts/lint-phase-id-drift.cjs
clean; eslint clean on both changed files.

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

* chore(#2761): correct changeset claims + mark runtime-gated BASE_SITES row (round-3 minors)

Gate-2 round-3 re-verify Minor 2: three changeset sentences in
.changeset/2761-bracket-read-tolerance.md were overstated in a new
direction after round-2:

- The split-milestone claim ("across a milestone split over two
  headings") was true only when the version-bearing heading came
  FIRST (repro8 case 1); false when it came LATER (round-3 Blocker 1
  case A). Now restated to say plainly "with the version-bearing
  heading in EITHER position" — true again now that round-3's Blocker
  1 fix lands earlier in this range.
- The "counted from the phases... rather than from every directory on
  disk" claim was false on cases A/B/D (a strict subset of the
  milestone's own phases). Restated as "ALL of the phases... not a
  subset", and extended to state that an unrelated bracket-shaped
  heading with no phase children of its own (case D's `[ADR.612]`
  shape) does not truncate the milestone either — true now, not before.
- "Each widened read is SELECTED by the project's phase_id_convention"
  was literally false for BRACKET_PHASE_TAIL_RE, which is RUNTIME-gated
  (via its only caller, isBracketMilestoneBoundary, itself only
  consulted when bracketBoundaryActive) rather than selector-gated.
  Restated behaviourally: "every widened read ENGAGES only when the
  project's resolved phase_id_convention is bracket" — true for both
  gating mechanisms, so it no longer implies a selector call this site
  does not make.

Minor 1: the STRUCTURAL IDENTITY test's BASE_SITES row for
BRACKET_PHASE_TAIL_RE (added in the B2 commit) asserts a property of
`phaseHeadingPrefixSrcFor` — the function — not of the call site; it
would pass unchanged even if the site were deleted. Safety at that
specific site rests entirely on a runtime gate the test cannot see.
Added `runtimeGated: true` to the row and threaded it into the
generated test's own title (`… [runtime-gated, not selector-covered]`),
so the gating mechanism is visible in test OUTPUT, not only in a source
comment that could drift silently.

No production code changed. Targeted suite green (48/48 in the
affected file); `node scripts/changeset/lint.cjs` ok; eslint clean.

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

* fix(#2761): harden round-3 preamble cutoff — subtree child scan + level cap

Team-lead review of f87bba0e found two edges in the round-3 preamble-
cutoff code, both hardened here.

AMENDMENT 1 — bracketHeadingHasMatchingChild (2e06aef5) checked only
`headings[index + 1]`, the IMMEDIATE next heading, not the candidate's
whole subtree. A genuine prior sibling milestone whose section opens
with a non-bracket subsection before its first phase heading
(`## [GSD.01] Setup` / `### Notes` / `### [GSD.01] 01: Old`) was
therefore wrongly rejected as a boundary — its real phase heading sits
TWO headings deep, not one — leaking its entire section into the
preamble unstripped.

CONFIRMED RED, not merely theoretical (built and ran the fixture
against f87bba0e before touching the fix, per instruction): scope
membership DOES drive the disk-side filter on this shape.
`GSD.01-01-old`'s directory was wrongly admitted into the CURRENT
milestone's filter via the leaked heading's qualified key
(`GSD.01-01`) — 3/2/67% where truth is 2/1/50%.

Fixed by scanning the candidate's full SUBTREE: continue past a
non-matching deeper heading instead of returning false on the first
one; only a same-or-shallower heading actually closes the subtree and
yields "no match found". A candidate whose entire subtree closes with
no same-id hit (including a genuinely childless one) still degrades to
`false` — over-inclusive, safe, unchanged from before.

AMENDMENT 2 — c483552a ported the version/emoji half of preambleCutoff
to the token-based scan with no level cap; the raw
`content.match(anyMilestonePattern)` it replaced was anchored
`^#{1,3}\s+`. A level-4+ version-bearing heading in the preamble
(`#### v2.0 notes`) therefore won the scan on the bracket branch where
the raw pattern — and the legacy path, unaffected — ignores it
outright. Fixed with `if (h.level > 3) continue;`, mirroring the
depth-sanity cap isBracketMilestoneBoundary already applies to the
bracket half of this same scan.

Tests: new describe block "#612 PR-2 round-3 hardening: subtree child
scan + level cap on preambleCutoff" —
- RED-turned-GREEN for the Notes-intervening fixture: exact 2/1/50 (was
  3/2/67), plus the disk-filter observable (`GSD.01-01-old` now
  correctly excluded).
- PIN for the level-4 preamble heading: the scope now PRESERVES the
  heading's text (was silently dropped before this fix — harmless in
  this minimal fixture's total_phases specifically, since the dropped
  text carries no phase-shaped content, but a real correctness gap
  against the raw pattern's own ceiling) — asserted via scope content,
  not total_phases, since that number is invariant here either way.
- PIN for the LEGACY control on the same level-4 shape — unchanged,
  confirming the raw content.match path is untouched.

Re-verified the existing genuine-prior-sibling and childless-sibling
pins (round-3 Blocker 1 commit) still pass under the subtree scan —
both fixtures' outcomes are unchanged since their same-id hit (or its
absence) was already at the first deeper heading.

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 942/942 pass (939 + 3 new). node scripts/lint-phase-id-drift.cjs
clean; eslint clean on both changed files. Full `npm test` + `npm run
lint:ci` deferred to the team lead's own run per instruction.

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

* fix(#2761): bracketHeadingHasMatchingChild requires a same-id PHASE child (round-4 Blocker 1)

Gate-2 round-4 re-verify Blocker 1 (NEW): the round-3 hardening's
subtree scan (fbfd0fca) proved SAME-ID-NESS but never asked whether
the matching child was PHASE-shaped. Case F1 re-opens round-3's case D
one heading later: `## [ADR.612] Heading convention` is followed by
its OWN sub-heading `### [ADR.612] Examples` — same bracket id as the
candidate, but MILESTONE-shaped (a name, no digit-then-colon), not a
phase. Same-id-ness alone satisfied the subtree scan and re-cut the
preamble at exactly the shape the round-3 hardening was written to
close.

Failing input: `## [ADR.612] Heading convention` / `### [ADR.612]
Examples` (prose) / `### [GSD.02] 01: One` (the current milestone's
own first phase, now unreachable) / `## [GSD.02] v2.0: Foundation` /
`### [GSD.02] 02: Two`. Truth 2/1/50. HEAD read 1/0/0, and `state sync`
reported "nothing to do" (exit 0, `{synced:true,changes:[]}`) because
its wrong 0% happened to equal the STATE.md seed — a half-done
milestone read as untouched with no write-path signal at all.

Fixed with the reviewer's one-conjunct addition: a same-id child only
counts if it is ALSO phase-tail-shaped (`BRACKET_PHASE_TAIL_RE`) — the
same single-owner discriminator `isBracketMilestoneBoundary` already
uses one level up for the identical distinction (phase vs milestone),
reused here rather than re-derived. This is exactly what the
changeset's own wording already claimed ("no phase children of its
own") — the code now matches the sentence rather than the other way
around.

Docstring updated at the function itself: the rule is "same-id PHASE
child", not "same-id child".

Tests: new describe block "#612 PR-2 round-4 Blocker 1: the same-id
child must be PHASE-shaped" — RED-turned-GREEN for F1 with
syncedTotal()/syncedPercent() (the persisted 0% — and the
report-nothing-to-do write-path silence — is the point), PINs for F11
(colon-less same-id child) and F11b (bullet-only phase list): both
correctly stay excluded either way, and the leak the phase-shape
requirement newly creates for these two shapes is INERT — a colon-less
heading forms no qualified key (getMilestonePhaseFilter's own
phase-heading pattern requires the colon too) and a bracket bullet
never matches the legacy-only BULLET_PHASE_LINE_PATTERN — confirmed
directly via getMilestonePhaseFilter, not merely inferred. Re-verified
the four existing child-rule pins (F2 subtree-closure, F3 deep-nested
same-id, F4 level-4 same-id, F5 childless-at-EOF) are unaffected by the
phase-shape requirement, since every one of them already used a
colon-bearing same-id child.

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 946/946 pass (942 + 4 new). Zero drift measured across the full F1-F12
corpus except F1 itself (F9/F10/F12 remain red, deferred to the
separate Major 1 fix). node scripts/lint-phase-id-drift.cjs clean;
eslint clean on both changed files.

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

* fix(#2761): fence-aware phase counting, milestone bounding, and bracket-fallback selection (round-4 Major 1)

Gate-2 round-4 re-verify Major 1 (NEW): roadmapPhaseCount is a
fence-blind raw `.exec()` over the scope string, duplicated in TWO
independent copies (buildStateFrontmatter's read path, cmdStateSync's
write path). With the bracket alternative now compiled into it (#612),
a fenced EXAMPLE phase heading in the preamble inflates total_phases
and persists a wrong percent that base got right. Two further
fence-blind sites participate: isMilestoneBounded (a raw
`.test(roadmapRaw)`) and the bracket-fallback SELECTOR inside
extractCurrentMilestone (a raw `content.matchAll`, only reachable when
version-string selection finds nothing).

Failing inputs:
- F10 (clean isolate, version-bearing selection): a fenced
  `### [GSD.02] 05: Example phase` in the preamble inflates
  total_phases 2->3, persisting 33% where truth is 50%. LEGACY control
  on the same shape is correct on every build — not a pre-existing
  hazard being inherited, bracket-only.
- F9 (version-less selection): a fenced example carrying the project's
  OWN milestone id additionally confuses the bracket-fallback selector
  (the fenced heading gets SELECTED), compounding with the same
  fence-blind counter. base suppressed the percent; round-1 and HEAD
  both wrote 33%.
- F12 (isMilestoneBounded isolate): the ONLY `[GSD.02]` heading in the
  document is inside a fence, and the asserted milestone genuinely has
  no section at all — HEAD persisted 67% where base correctly
  suppressed the percent (the milestone is absent from the roadmap).

Fixed at the CONSUMER level, not the producer — extractCurrentMilestone's
returned scope string is deliberately UNCHANGED, since every other
consumer of that string needs its full content fidelity and legacy
identity forbids touching the shared string (this branch's own
precedent, ff6bf0a8/c483552a, was producer-level; here the ruling is
consumer-level because the string is shared far more broadly than the
two round-3 fixes' narrower producer edits):

(a) New `countRoadmapPhaseHeadings` (src/state.cts, immediately above
    extractRetiredPhaseNumbers) — ONE shared implementation for both
    call sites, replacing two independently-maintained copies. BRACKET
    convention counts via `tokenizeHeadings(scope)` at levels 2-4,
    testing each heading's hash-stripped text directly — fence-aware by
    construction, since tokenizeHeadings never produces a token for a
    fenced line. LEGACY convention keeps the exact pre-existing raw
    `.exec()` loop, byte-for-byte. A pre-existing, deliberately
    PRESERVED asymmetry between the two original call sites — the read
    path always excluded a bare `/^999\b/` token, the write path never
    did — is threaded through as an explicit
    `includeUnconditional999Check` parameter per call site, so sharing
    the implementation does not silently unify (and thereby move)
    either total.
(b) isMilestoneBounded's bracket branch now scans
    `tokenizeHeadings(roadmapRaw)` for a matching heading (level <= 3)
    instead of a raw regex test. Legacy version-string branch untouched.
(c) The bracket-fallback SELECTOR now builds its candidate set from
    `tokenizeHeadings(content)` instead of `content.matchAll`,
    reconstructing a match-shaped array so every downstream consumer of
    `headingMatches` sees the identical shape the raw-regex path always
    produced. This is the ONE site in this entire arc where SELECTION
    itself changes — selection SEMANTICS are otherwise unchanged (same
    pattern, same first-match-wins by document order); only the
    candidate set is now fence-aware. Pinned that unfenced selection is
    byte-identical.

Zero drift measured across the full historical corpus (repro2-13,
rv-attack1/1b/3c, rv-mech1, rv2-amend1/2, and F1-F11b) except the three
target fixtures.

Tests: new describe block "#612 PR-2 round-4 Major 1: four fence-blind
sites on the bracket path" — RED-turned-GREEN for F10 (with
syncedTotal()/syncedPercent()) and F9 (both layers), PINs for F10's
LEGACY control and F10c (non-phase-shaped fence, unaffected either
way), RED-turned-GREEN for F12 (asserts the percent KEY is absent from
`state json`'s output and that `state sync`'s body stays at its
unmodified seed — the persisted-suppression signal, not merely a
total_phases number), and an explicit PIN that unfenced bracket-fallback
selection (first real milestone-shaped heading wins, no fences
involved) is unaffected.

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 952/952 pass (946 + 6 new). node scripts/lint-phase-id-drift.cjs
clean; eslint clean on all three changed files.

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

* chore(#2761): correct docstring overstatement + stale consumer-count sentence (round-4 minors)

Gate-2 round-4 re-verify Minor 1 + Nit 1. No production code changed.

Minor 1: bracketHeadingHasMatchingChild's own docstring said a
rejected (no-same-id-PHASE-child) candidate's degrade "contributes
nothing to any phase count" — true of the candidate's OWN heading
text, but not of its SUBTREE, which is what actually stays in the
preamble. F7 (`## [GSD.01] Setup` / `### [GSD.07] 01: Foreign`) shows
a DIFFERENT-id bracket PHASE heading inside a rejected candidate's
subtree DOES form a qualified key and CAN admit a foreign directory —
3/2/67%, stable across base, round-1 and HEAD (base via its own
pass-all degrade). Not a regression, still the declared over-inclusive
/ never-under-inclusive safe direction — the comment now says that,
with F7's numbers cited, at the call site that actually decides
`isBoundary` (roadmap-parser.cts's preambleCutoff loop) rather than
only at the helper's own definition.

Minor 2 (changeset) — VERIFIED, no wording change needed: re-ran F1,
F9, F10, F12 at this HEAD. The "no phase children of its own... does
not truncate it either" sentence (naming the `[ADR.612]` shape
directly) is now literally true — F1 reads 2/1/50. The "counted from
ALL of the phases... not a subset" sentence is now true on every
measured shape — F1/F9/F10 all read 2/1/50, F12 correctly suppresses
the percent. No carve-out for F9/F10 is needed since round-4 Major 1
(3be5c412) closes both; per the fix-round instruction to "only carve
out anything genuinely left," nothing is.

Nit 1: tests/adr-612-bracket-heading-selection.test.cjs's runtimeGated
row claimed `BRACKET_HEADING_INTRO_RE` has "no other consumers" — true
when round-3's f87bba0e wrote it, stale since 2e06aef5 (round-3's own
earlier commit) had already added two more uses inside
bracketHeadingHasMatchingChild. Corrected to state the true count
(three consumers) and re-confirm the conclusion is unaffected: all
three are still nested inside the same bracketBoundaryActive runtime
gate, and BRACKET_HEADING_INTRO_RE is built from BRACKET_ID_SRC, not
phaseHeadingPrefixSrcFor, so it was never a selector site regardless of
consumer count.

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 952/952 pass (comment-only changes, no count movement). eslint
clean; node scripts/changeset/lint.cjs ok.

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

* fix(#2761): restore the bracketId guard in countRoadmapPhaseHeadings (round-5 Blocker 1)

Gate-2 round-5 re-verify Blocker 1 (NEW, introduced by 3be5c412): the
merge that created the shared countRoadmapPhaseHeadings helper dropped
the `bracketId && ` guard both original inline loops carried before
calling isSentinelPhaseId. Every other isSentinelPhaseId call site in
src/ (roadmap-parser.cts, roadmap.cts, validate.cts x2, verify.cts)
keeps the guard; state.cts's shared counter was the only one of seven
without it.

When the phase-heading-intro grammar's LEGACY alternative matches (a
`### Phase 00:` heading in a `phase_id_convention: "bracket"` repo —
the mid-migration shape this PR exists for), the bracket capture group
is `undefined`, so the unguarded call became
`isSentinelPhaseId("undefined-00", 'bracket')` — measured TRUE, so
phase 00 (and 000, 0a, 0.5, 999.1 — any token whose splice with the
literal string "undefined" happens to fall in a sentinel range) was
silently dropped from the denominator. `getMilestonePhaseFilter` (which
still carries its own guard) counts the phase and admits its directory
regardless, so the filter and the counter disagree — a half-done
milestone reads as 100% complete, persisted.

One-line fix, restoring the guard every sibling call site already has:

    if (bracketId && isSentinelPhaseId(`${bracketId}-${token}`, 'bracket')) continue;

Line count: `git diff --stat src/state.cts` -> 1 file changed, 1
insertion(+), 1 deletion(-).

Tests: new describe block "#612 PR-2 round-5 Blocker 1:
countRoadmapPhaseHeadings restores the bracketId guard" — RED-turned-
GREEN for G3 (3/2/67, was 2/2/100) and G3d (the mixed bracket+legacy
mid-migration shape, same numbers) with syncedTotal()/syncedPercent(),
PIN for G3's legacy control (unaffected), PIN for G3b (isolates the
counter with no directory to admit), PIN for G3c (legacy 01/02 only,
no sentinel-shaped token present).

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 957/957 pass (952 + 5 new). node scripts/lint-phase-id-drift.cjs
clean; eslint clean.

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

* fix(#2761): extractRetiredPhaseNumbers is fence-aware on the bracket path (round-5 Major 1)

Gate-2 round-5 re-verify Major 1 (NEW) — a FIFTH fence-blind site on
the bracket path, missed by 3be5c412's own enumeration of "four".
extractRetiredPhaseNumbers' line scan (`scope.split(/\r?\n/)`) has no
fence awareness. This PR compiles the bracket alternative into
`introSrc` ("the retirement filter has to widen with the counter it
protects" — the function's own pre-existing comment), so a FENCED
authoring EXAMPLE showing the #1514 retirement gesture in bracket
spelling is now indistinguishable from a real one: it retires a
genuine phase, shrinking the denominator and persisting a confident
100% where base correctly read 50%.

Fixed with the SAME consumer-level ruling this arc has used at every
other fence-blind site, reusing markdown-sectionizer's existing
exported `stripFencedCode` rather than hand-rolling a second fence
parser (single-owner rule) — retirement lines are BULLETS, not
headings, so `tokenizeHeadings` doesn't serve here; `stripFencedCode`
is the general-purpose fence stripper the tokenizer itself is built on.
Gated on `convention === 'bracket'`; the LEGACY line scan stays the raw
`scope` string, byte-identical — its own fenced-example hazard is
pre-existing (wrong at base too) and out of scope.

Line count: `git diff --stat src/state.cts` -> 1 file changed, 9
insertions(+), 2 deletions(-) — one import added, four lines inside
the function (a comment + the `scanScope` computation + the changed
`.split()` call).

Tests: new describe block "#612 PR-2 round-5 Major 1:
extractRetiredPhaseNumbers is fence-aware on the bracket path" —
RED-turned-GREEN for G2 (fenced example in the preamble) and G2b (the
same example placed INSIDE the milestone section, ruling out a
preamble-scoping artifact — the site itself was fence-blind wherever
the fence sits), PIN for the LEGACY control (unchanged, pre-existing,
out of scope — base is wrong on this shape too).

Also folds in the "four fence-blind sites" correction: 3be5c412's
commit message and any restatement of it should read FIVE going
forward; this commit's own message states the count correctly.

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 960/960 pass (957 + 3 new). node scripts/lint-phase-id-drift.cjs
clean; eslint clean.

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

* fix(#2761): state sync's counter excludes the bracket 999 icebox token (round-5 Major 2)

Gate-2 round-5 re-verify Major 2 (NEW) — `includeUnconditional999Check`
left `state json` and `state sync` reporting different totals for one
bracket repo. Under bracket, READING-B puts the sentinel in the
bracket, so `isSentinelPhaseId("GSD.02-999", 'bracket')` is false —
the `/^999\b/` TOKEN rule is the only thing excluding a
`### [GSD.02] 999:` icebox heading, and it ran on the read path
(buildStateFrontmatter, `true`) and on getMilestonePhaseFilter
(unconditional), but not on cmdStateSync's own counter (`false`). One
`state sync` call could leave a single STATE.md with its own
frontmatter (percent 50, from the read-path re-sync inside
writeStateMd) and body (percent 33, from the write-path counter that
alone still counted the icebox heading) disagreeing — falsifying this
PR's own stated invariant that sharing countRoadmapPhaseHeadings made
"the two counters must see the same phases" structural.

Functional change is one argument, exactly as specified: the write
call site now passes `syncConvention === 'bracket'` instead of the
literal `false`. `syncConvention === 'bracket'` is `false` for every
non-bracket value, so the LEGACY path resolves to the exact same
`false` it always did — this file's own pre-existing, deliberately-
unchanged read/write divergence on that path is untouched. The READ
site (`:1860`) is NOT touched — its historical behaviour applied
`/^999\b/` to legacy and bracket alike, so changing it would move
legacy READ totals, exactly the class of mistake this arc's own
Blocker 1 (this round) was.

Line count: the functional change is ONE argument
(`false` -> `syncConvention === 'bracket'`); the surrounding comment
was rewritten because the previous one asserted the now-superseded
behaviour ("preserving this file's pre-existing... divergence... a
bare 999 token is not excluded here") and leaving it would mislead the
next reader — not a structural change.

Tests: new describe block "#612 PR-2 round-5 Major 2: state sync
excludes the bracket 999 icebox token like the read path" —
RED-turned-GREEN for G1, asserting `state sync`'s body percent equals
`state json`'s own percent (both 50, not 33 vs 50), PIN for G1's
legacy control (33 vs 50 unchanged, deliberately).

Targeted suite green: `node --test tests/adr-612-*.test.cjs
tests/roadmap-parser.test.cjs tests/state.test.cjs tests/verify.test.cjs`
-> 962/962 pass (960 + 2 new). node scripts/lint-phase-id-drift.cjs
clean; eslint clean.

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

* chore(#2761): restore indent parity at the two line-start-anchored bracket-heading reconstructions (round-5 Minor 1)

`HeadingToken.offset` (tokenizeHeadings) is the LINE-START character offset,
not necessarily the `#` character's own offset — a ≤3-space-indented ATX
heading has both. Two round-4 reconstructions built on tokenizeHeadings
inherited this gap and accepted indented headings their raw, line-start-
anchored predecessors (`^#{1,3}\s+\[...`) never matched:

  1. roadmap-parser.cts's bracket-fallback SELECTOR (extractCurrentMilestone,
     ~line 377) — an indented, version-less `[GSD.02]` milestone heading
     could be reconstructed into headingMatches, then mis-parsed downstream
     (selectedBracketId null, level fallback to 1), leaking a SIBLING
     milestone's phases into the counted scope (G6: HEAD read 3/2/67 instead
     of 2/1/50 — a real phase heading's own directory belonging to the NEXT
     milestone got counted).

  2. state.cts's isMilestoneBounded (~line 1571) — the same gap let an
     indented-only `[GSD.02]`-shaped heading wrongly bound a milestone
     absent from the roadmap, un-suppressing a percent that should stay
     suppressed (mirrors round-4's F12 fenced-only case, but via indentation
     instead of a fence).

Fix: one added conjunct per site — `content[h.offset] === '#'` (source-named
`roadmapRaw` in state.cts) — filtering to tokens whose LINE-START offset IS
the `#` character, i.e. exactly the set the raw line-start-anchored regex
would ever have matched. Restores byte-for-byte raw parity; no other logic
in either function changes. computeSectionEnd and the preamble version/
emoji-token scan are untouched, as instructed — they consumed tokenizeHeadings
output before this arc and are out of scope here.

Also corrects roadmap-parser.cts's now-provably-false docstring claim that
`h.offset` is unconditionally "the same `#`-character coordinate space
`content.match().index` used" — true only for the survivors of the new
filter, not for every token tokenizeHeadings produces.

Line count: the FUNCTIONAL change is exactly 2 lines (one added `&&` conjunct
per call site — `git diff --stat` on the two source files shows 20
insertions/7 deletions, but only those 2 lines change behavior; the rest is
docstring/comment rationale, per this round's "state the line count" ask).

TDD: both fixtures verified RED at HEAD before this commit, GREEN after,
via /tmp/pr612rev/rv5-attack.cjs G6 and a locally-authored isMilestoneBounded-
isolating probe (G6 alone doesn't distinguish the two sites — its unindented
phase headings already satisfy isMilestoneBounded's loose prefix regex
either way, so a second, indentation-only fixture was needed to prove that
site's fix is not a no-op; verified by temporarily reverting just that one
conjunct, confirming 100%-wrongly-bounded RED, then restoring it, confirming
suppressed-percent GREEN).

New tests (adr-612-bracket-phase-counting.test.cjs):
  - RED (G6): indented version-less bracket milestone heading — 2/1/50, not
    the pinned-before-fix 3/2/67.
  - PIN (G6c unindented control): identical document, no indent — 2/1/50
    unaffected on every build.
  - RED (isMilestoneBounded site, indented-ONLY): mirrors round-4's F12
    shape (fenced-ONLY → indented-ONLY) — percent stays suppressed instead
    of the pinned-before-fix wrongly-bounded 100%.

Full G1-G10 (rv5-attack.cjs) + G2b/G3c/G3d/G6c (rv5b.cjs) re-verified
zero-drift against TRUTH after this change. Targeted suite (adr-612-*,
roadmap-parser, state, verify): 962 -> 965 (+3), 0 fail.

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

* chore(#2761): changeset discloses counting-set narrowing + correct stale consumer-count sentence (round-5 minors)

FIX 5 (Minor 2): .changeset/2761-bracket-read-tolerance.md did not disclose
that bracket phase-heading counting is narrower than the raw-regex
predecessor in two ways the review's G4/G5 fixtures surfaced: a level-5
heading (`##### [GSD.02] 05: ...`) is no longer counted (the counter's
tokenizeHeadings scan caps at level 4, matching the selector/isMilestoneBounded
ceiling), and a space-less heading (`###[GSD.02] 05: ...`) is no longer
counted (CommonMark requires ≥1 space/tab after the hashes, which
tokenizeHeadings correctly enforces and the old raw regex did not). Both
G4 and G5 moved from round-1's wrong (inflated) values back to base's
original values as an incidental side effect of routing through
tokenizeHeadings — never a deliberate feature of this PR, and previously
undocumented. One clause added to the existing run-on paragraph; no other
wording in the changeset touched.

FIX 6 (Nit 1): tests/adr-612-bracket-heading-selection.test.cjs:76 —
`BRACKET_PHASE_TAIL_RE` has TWO consumers as of round-4's 65d257ce
(isBracketMilestoneBoundary's own use, plus bracketHeadingHasMatchingChild's
same-id-PHASE-child conjunct), not the "no other consumers" the comment
claimed. Same correction pattern round-4 already applied to this row's
BRACKET_HEADING_INTRO_RE neighbor (that sentence's own staleness was fixed
in 4d7184b8): note the true consumer count, confirm both stay nested inside
the same bracketBoundaryActive runtime gate (verified at
src/roadmap-parser.cts:178 and :250, both reached only through the
`if (bracketBoundaryActive)` block starting at :529), and record which
commit and which fix introduced the drift. Comment-only; no assertion
logic changed.

Line count: 2 files, 8 insertions / 2 deletions total — one added clause
in the changeset (1 line changed) and one comment block replacing the
single stale line in the test file (6 comment lines replacing 1).

Verified: targeted suite (adr-612-*, roadmap-parser, state, verify)
unchanged at 965/965 pass (comment/prose-only diffs, no test count change).
`node scripts/changeset/lint.cjs` and `npx eslint` on the touched files both
clean.

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

* fix(#2761): restore the bracketId guard on the bracket-only /^0\b/ sibling rule (round-6 Blocker 1)

Round-5's Blocker 1 was `isSentinelPhaseId("undefined-00")` — the merge
that introduced the shared counter dropped the `bracketId &&` guard on the
sentinel check. This is the identical failure one line further down, in the
sibling rule this PR itself added: when the phase-heading grammar's LEGACY
alternative matches (`### Phase 0:` in a `phase_id_convention: "bracket"`
repo — the mid-migration shape this PR exists for), `bracketId` is
`undefined`, and the unguarded `/^0\b/` fires on the bare token anyway.
Neither the LEGACY branch of this same function nor
`getMilestonePhaseFilter` has a `/^0\b/` rule at all, so the filter counts
the phase and admits its completed directory while the counter refuses to
count its heading — a milestone with an unstarted phase 02 persists as a
confident 100%.

`/^0\b/` matches `0` and `0.5` (word boundary before the `.`) but not `00`
(no boundary between the two zeros), which is exactly why round-5's G3/G3d
fixtures (`### Phase 00:`) never tripped this one — same defect class,
different token spelling.

Fix: one word, mirroring the guard round 5 restored two lines above —
`if (/^0\b/.test(token)) continue;` -> `if (bracketId && /^0\b/.test(token)) continue;`.

Expected and intentional side effect: `roadmap analyze` and `state json`
now disagree again on this bracket-repo shape (analyze phase_count=2, json
total_phases=3) — exactly as they already do under the legacy convention
today (verified via /tmp/pr612rev/rv6c.cjs on both conventions). That is
the counter regaining agreement with `getMilestonePhaseFilter` (the tighter
constraint — it is what actually decides `completed_phases`), not a new
break; the counter/filter disagreement is what was wrong.

Out of scope, deliberately NOT fixed here (Minor 1, disclosed via a PIN
test only): the bracket-SPELLED `### [GSD.02] 0:` shape has the same
counter/filter disagreement, but reads 2/2/100 on base too — never closed
by any build in this arc, so it is a pre-existing gap rather than a
regression this commit could introduce.

Line count: src/state.cts is exactly 1 insertion / 1 deletion (one word,
`bracketId && ` prepended to the existing condition).

TDD: T0 (`Phase 0:`) and T05 (`Phase 0.5:`) verified RED at HEAD before this
commit (json 2/2/100, sync body 100%) via /tmp/pr612rev/rv6b.cjs, GREEN
after (3/2/67 on both derivations, matching TRUTH). Zero-drift verified by
diffing the FULL corpus (rv5-attack, rv5b, rv4-attack, rv-attack1,
rv-attack1b, rv-attack3c, rv-mech1, rv2-amend1, rv2-amend2, rv6-attack
H1-H19, rv6b) between a pre-fix and post-fix build: the only differing
lines in the entire diff are T0, T05, and H14 — the three target fixtures.

New tests (adr-612-bracket-phase-counting.test.cjs):
  - RED (T0) + PIN (T0L legacy control)
  - RED (T05) + PIN (T05L legacy control)
  - PIN (B0, bracket-spelled `0` — base-parity characterization, Minor 1,
    not fixed this round)
  Round-5's own G3 test (`### Phase 00:`) already serves as the T00 pin —
  `/^0\b/` never matched `00`, so it is unaffected and untouched.

Targeted suite (adr-612-*, roadmap-parser, state, verify): 965 -> 970 (+5),
0 fail. `lint-phase-id-drift.cjs` and `npx eslint` on touched files clean.

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

* chore(#2761): changeset re-attributes the phase-count level cap + discloses the bare-0 carve-out; correct two stale test comments (round-6 Minor 1 + Nits)

FIX 2 (Minor 1 — disclosure only, NOT a code fix): the bracket-SPELLED
`### [GSD.02] 0:` / `0.5:` shape has the same counter/filter disagreement
round-6's Blocker fixed for the legacy spelling, but it reads 2/2/100 on
BASE too — never closed by any build in this arc, so it is a pre-existing
gap rather than a regression this round could introduce. Two changes:

  - Pinned as a base-parity characterization: new PIN test (B0) in
    04b5a95f's describe block asserting the exact unchanged value with a
    comment stating why it's deliberately not touched.
  - .changeset/2761-bracket-read-tolerance.md: one qualifying clause added
    to the "counted from ALL of the phases … not a subset" sentence — a
    bare `0`/`0.x` phase token (however spelled) keeps `roadmap analyze`'s
    own pre-existing sentinel reading under bracket too, so it stays
    excluded from these counts. Carried over, not newly introduced by this
    PR — `roadmap analyze` has always read it this way.

FIX 3(a) — same changeset paragraph misattributed the phase counter's
2-4 level cap to "the milestone-boundary machinery in this PR" (the
selector, `isMilestoneBounded`, the preamble scan) — that machinery caps
at `###` (level ≤3), not 2-4. The 2-4 cap belongs to
`getMilestonePhaseFilter`'s own phase scan. Re-pointed the attribution;
the paragraph's earlier, correct ≤3 claim (selector/isMilestoneBounded)
is untouched.

FIX 3(b) — tests/adr-612-bracket-heading-selection.test.cjs:76-82 (added by
1395bd89, round-5's own Nit-1 correction) claimed both
`BRACKET_PHASE_TAIL_RE` consumers are reached "only through the
`if (bracketBoundaryActive)` block starting at :529". Verified at HEAD:
`bracketHeadingHasMatchingChild` is (only caller :593, inside that block).
`isBracketMilestoneBoundary` is not — it has two callers, an inline
`bracketBoundaryActive &&` conjunct at `:473` (inside `computeSectionEnd`)
and the `:529` block at `:567` — the very fact this row's own earlier
"exactly two callers" paragraph already stated correctly. Corrected the
mechanism claim; the CONCLUSION (every consumer is still gated on the same
flag) is unchanged, exactly as round-5's own Nit-1 fix left round-4's
conclusion unchanged when it corrected the consumer count.

FIX 3(c) — tests/adr-612-bracket-phase-counting.test.cjs:2311,2340 still
said "four fence-blind sites" after round-5 (357ba671) added a fifth
(the retirement scan) in its own block below. Reworded both the section
comment and the `describe()` label to read as historical scoping of
round-4's own fix ("the four sites known at round 4 … a fifth was found at
round 5, see its own block below") rather than a live exhaustive claim.

Line count: 3 files, changeset 1/1, heading-selection test 17/8,
phase-counting test 6/2 (comment/prose-only; B0's own PIN test landed in
04b5a95f alongside T0/T05 since it was investigated as part of that same
Blocker's defect class, not in this commit — noted here for the record).

Verified: targeted suite (adr-612-*, roadmap-parser, state, verify)
unchanged at 970/970 (comment/prose-only diffs, no test count change).
`npx eslint` and `node scripts/changeset/lint.cjs` both clean.

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

* fix(#2761): W021's bracket remediation hint stops pointing at a command that hard-errors (round-7 Minor 2)

`checkBracketCoherence`'s W021 (added by 94abf5df) attached the fix hint
`Run \`gsd-tools roadmap upgrade --convention bracket\` to migrate
(dry-run by default)` to every bracket-convention W021 — both sub-checks
(`missing-bracket` and `mismatch`) share the single `addIssue` call at
src/verify.cts:2255-2256. But `roadmap-command-router.cts:204` throws
unconditionally for any `--convention` value other than
`milestone-prefixed`:

  $ gsd-tools roadmap upgrade --convention bracket
  Error: Only --convention milestone-prefixed is supported

This contradicts the PR's own two disclosures: the changeset ("`bracket`
is a READ-path opt-in until the migrator and write path land") and
docs/CONFIGURATION.md:188 ("There is no bracket migrator and no bracket
emit yet"). Reachability is the exact mid-migration repo this PR targets —
any bracket project with one un-migrated heading gets an unfollowable
instruction on every `validate health`.

Fix: one string. Replaced the hint with what a user can actually do today —
manually align the heading's bracket milestone to its section — and named
the tracked future landing (#612 PR-3) instead of a command that errors.
The milestone-prefixed sibling hint at src/verify.cts:2240 (a different,
already-functional convention/command pair — verified against
roadmap-command-router.cts:65) is untouched.

Line count: src/verify.cts is exactly 1 insertion / 1 deletion (one string
literal).

No test in the suite previously asserted this string's content
(`grep -rn "upgrade --convention bracket" tests/` was empty), so the
unfollowable hint shipped unpinned — `lint-fix-has-regression-test.cjs`
would not have caught a string-only change without a new test. Added one:
asserts the fix string both (a) does not match `--convention bracket`
(the specific pinned-before-this-fix hazard) and (b) equals the new string
exactly, covering the invariant a future edit must not re-break: no
unsupported `--convention` value named in remediation text users are
expected to run verbatim.

Verified end-to-end (not just unit-level) via /tmp/pr612rev/rv7f.cjs: the
W021 issue's `fix` field now reads the new string; `gsd-tools roadmap
upgrade --convention bracket` (and its --dry-run variant) still correctly
hard-error — that command remains unsupported, only the hint text changed.

Targeted suite (adr-612-*, roadmap-parser, state, verify): 970 -> 971 (+1),
0 fail. `lint-phase-id-drift.cjs` clean; `npx eslint` on touched files:
0 errors (1 pre-existing unrelated no-elapsed-assertion warning, same file,
same line this arc's prior rounds already disclosed).

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

* chore(#2761): correct the bare-0 changeset disclosure + disclose W021's second sub-check (round-7 Minor 1 + Nit 1)

FIX 1 (Minor 1) — round-6's bare-0 changeset clause (1395bd89) was wrong in
three falsifiable ways:

  (a) Its own illustration (`### Phase 0:`) is exactly the LEGACY spelling
      04b5a95f made COUNTED. The residual exclusion after that fix applies
      only to the BRACKET-spelled token (`### [GSD.02] 0:`) — the clause
      named the wrong shape as its example.
  (b) "excluded from these counts" over-scoped the carve-out. The phase-0
      directory is admitted into `completed_phases`/`total_plans` in BOTH
      spellings (measured: B0 at HEAD has `completed_phases=2`,
      `accepts {"GSD.02-0-bootstrap":true}`). The exclusion that survives
      lives in `total_phases`/`phase_count` (heading counting) only.
  (c) The pre-existing "so `roadmap analyze` and `state json` report the
      same number" sentence (present since before this arc's bracket work)
      is now false for the bare-0 LEGACY-spelled shape: 04b5a95f's own
      commit message discloses this exact re-divergence as expected —
      `roadmap analyze` phase_count=2 vs `state json` total_phases=3 on T0
      — matching the disagreement legacy already carries today. The
      changeset still asserted unconditional agreement.

Rewrote both sentences: dropped the `### Phase 0:` example, scoped the
carve-out to `total_phases`/`phase_count`, named the bracket-spelled token
as the one that keeps analyze's sentinel reading, stated plainly that the
legacy-spelled form in a bracket repo IS counted (the mid-migration guard),
and qualified the "report the same number" claim to the `999` token, with
the bare-0 legacy-spelled shape named as the one exception and why.

FIX 3 (Nit 1) — `checkBracketCoherence` has always had two sub-checks
(its own docstring: "Two sub-checks, both surfaced as W021") but both the
changeset and docs/CONFIGURATION.md:188 described only the `mismatch`
sub-check. The `missing-bracket` sub-check — which fires on every
legacy-spelled heading in a bracket repo, the noisier of the two on a
mid-migration project — was undisclosed in both places. One clause added
to each.

Line count: 2 files, 1 line changed each (both are single-paragraph/
single-row files; git diff --stat reports 1/1 per file though several
distinct clauses were edited within that one line each).

Verified: `node scripts/changeset/lint.cjs` clean. Targeted suite
(adr-612-*, roadmap-parser, state, verify) unchanged at 971/971
(prose-only diffs, no test count change, no code touched).

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

* chore(#2761): resolvePhaseIdConvention's docstring no longer claims loadConfig drops the key

Upstream #2997 (aa7697fe, landed in `next` during this PR's final
verification) added `phase_id_convention: get('phase_id_convention') ?? null`
to `_baseConfig` in config-loader.cts — `loadConfig` now surfaces
`phase_id_convention` in its resolved config. This function's docstring
gave "loadConfig merges against CONFIG_DEFAULTS and drops keys it does not
know, and `phase_id_convention` is not among them" as the reason for
reading config.json directly instead of calling `loadConfig(cwd)`. That
rationale is now stale against live `next`.

Corrected the comment to state the two reasons that actually survive #2997:

  1. The workstream->root federation this function performs is a standalone
     resolution run against a GIVEN cwd, not necessarily the same base a
     `loadConfig(cwd)` call elsewhere in the codebase would federate from.
  2. Convention-ENUM validation is still #612 PR-4 work — this function
     returns the raw string unvalidated, exactly as the now-surfaced
     resolved key would.

Noted that #2997 surfacing the key makes consuming it from resolved config
(instead of re-reading config.json here) a natural PR-4 consolidation —
not this PR's scope. The "cycles were never the obstacle" close and every
other paragraph in the docstring (federation rationale, SCOPE note) are
untouched; they still hold.

Comment-only — no code behavior changed. This worktree's own history does
not contain aa7697fe (git merge-base --is-ancestor confirms neither branch
is an ancestor of the other; not rebasing per instruction), so this is a
textual correction against a documented external fact, not a functional
sync with upstream.

git diff --stat:
 src/planning-workspace.cts | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

Verified: `npm run build:lib` clean, `node scripts/lint-phase-id-drift.cjs`
clean, `npm run lint:ci` exit 0 (same 2 pre-existing unrelated eslint
warnings as every prior round this arc, 0 errors; lint-fix-has-regression-test
PASS). Full suite not re-run per instruction (comment-only diff).

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

* fix(#2761): resolve phase_id_convention against the caller's workstream

`resolvePhaseIdConvention` took no workstream, so it resolved from
`planningDir(cwd)` — which falls back to `GSD_WORKSTREAM` only when its `ws`
argument is `undefined`. Every caller that passes a workstream by ARGUMENT
(they cannot set the env var per iteration) therefore read the convention from
the ROOT config while reading that workstream's ROADMAP.

Two reproduced consequences:

- A workstream that explicitly declares its own `phase_id_convention` had it
  ignored. Flipping ONLY the root config between bracket and milestone-prefixed
  changed which milestone that workstream extracted.
- `--workstream foo` and `GSD_WORKSTREAM=foo` disagreed on the same repo: the
  arg form fell through to the root config, the env form did not.

`resolvePhaseIdConvention(cwd, ws?)` now forwards `ws` to `planningDir`, and
both roadmap-parser call sites pass theirs — `extractCurrentMilestoneScoped`
(which already reads STATE from `planningDir(cwd, ws)`) and
`getMilestonePhaseFilter`'s lazy branch. `undefined` keeps the env fallback, so
convention-less call sites are byte-identical; `null` still means "explicitly no
workstream". The `undefined` vs `null` discriminator on `phaseIdConvention` is
untouched — only the base the `undefined` branch resolves FROM moves.

workstream-inventory's two sites (`countRoadmapPhases`, `inspectWorkstream`)
passed a literal `null` where they meant `undefined`, pinning every workstream
to the legacy grammar. On a bracket workstream whose milestone declares 3
phases that returned phaseCount 0 and fell back to the on-disk directory count;
it now returns 3. A non-bracket workstream is unchanged (legacy control pinned).

The workstream -> root federation is preserved: a workstream that declares no
convention still inherits the root, as config-loader does. That inheritance is
pinned so the fix cannot be over-applied into isolation.

* fix(#2761): classify missing phase details per occurrence, not per token

Under READING-B a phase's sentinel status lives in the BRACKET, so
`[GSD.999] 01` and `[GSD.02] 01` share a token and are not the same phase.
Both sides of the missing-detail check were keyed by the bare token anyway, and
both produced false negatives in `missing_phase_details`:

- The checklist scan built a token -> bracket-id Map, FIRST-WINS. Of two entries
  sharing a token, whichever the author wrote first classified both. With
  `- [ ] **[GSD.999] 01: Icebox**` above `- [ ] **[GSD.02] 01: ...**` the real
  phase inherited the icebox's sentinel verdict and vanished from the report;
  swapping the two bullets — same document, same phases — reported it. Pinned
  with a test asserting BOTH orders.

- The detail set was `new Set(phases.map(p => p.number))`, also token-keyed, so
  `[GSD.02] 01`'s heading marked token `01` present and satisfied
  `[GSD.03] 01`, which has no heading anywhere. Order-independent, same class.

Both sides now key on an occurrence key: the owner's `bracketQualifiedKey`
(fold- and padding-insensitive, so `[gsd.2] 01` and `[GSD.02] 01` are one
phase), falling back to a fold-normalized composite for the two shapes that
grammar refuses — a token carrying its own hyphen, which splices to an id whose
trailing segment the qualified-key grammar truncates (the hazard
`getMilestonePhaseFilter` guards with its own `!token.includes('-')`), and any
id it does not accept. With no bracket id the key IS the bare token, so the
legacy path keeps its exact keys and dedupe order.

The emitted value is unchanged — `missing_phase_details` stays an array of bare
tokens, matching `phases[].number`. Only the classification moved to the
qualified key, so two brackets' `01` both missing report `01` once instead of
one silently covering for the other.

* test(#2761): replace the two wall-clock ReDoS assertions with algorithmic bounds

Both guards asserted elapsed wall-clock time — `Date.now()` against a 20s
ceiling in the coherence suite, `process.hrtime.bigint()` against 1s in the
read-tolerance suite. Those measure the host machine rather than the SUT and
flake on a loaded CI runner (RULESET.TESTS.no-timing-assertion). Per
RULESET.TESTS.delete-bad-tests they are REPLACED, not skipped, and the
behavioral property each one guarded is preserved.

The property is "the widened bracket patterns do not backtrack
catastrophically", which is a claim about growth, so it is now stated by
scaling the input instead of by timing it:

- validate health runs the pathological unclosed bracket at 4,000 and 16,000
  characters and must return the same correct result (no W021) at both.
- The four reader entry points run five ReDoS shapes at 5,000 and 20,000 and
  must name exactly the phases each shape should name at each size, with the
  variant cardinality unchanged across the two.

Catastrophic backtracking is superlinear, so a regression cannot complete the
4x leg under any ceiling, while a bounded matcher is indifferent to the
scaling. The one attack that is well-formed-but-oversized now pins its reading
precisely (`['1'.repeat(n)]`) rather than being lumped in with the malformed
ones. A positive control asserts the readers still extract a well-formed
bracket heading, so "names no phase" cannot pass by the readers being inert.

`{ timeout }` is a hang backstop, not an assertion: it turns a runaway into a
deterministic failure instead of a suite that never returns.

* fix(#2761): give the bracket grammar one owner and teach the drift guard to see it

The bracket milestone-intro grammar was re-typed verbatim in three readers —
roadmap-parser's bracket-fallback selector, state's `isMilestoneBounded` and
verify's `checkBracketCoherence` — which is exactly what #2761's own gate
forbids ("no token literal outside src/phase-id.cts"). `check:phase-id-drift`
reported clean the whole time: its detector only ever knew the phase-NUMBER
token grammar, so the bracket class `[A-Z][A-Z0-9_]*` was invisible to it.

Ownership. `src/phase-id.cts` now exports the class as
`BRACKET_PROJECT_CODE_SRC` and the intro in the two shapes its readers need:
`bracketMilestoneIntroSrcFor(milestone)` (pinned to one milestone) and
`BRACKET_MILESTONE_INTRO_CAPTURING_SRC` (milestone captured). The pinned
builder owns the pad2 spelling rule too — "canonical spelling only, not `0*N`"
was previously restated in prose beside each copy, a convention two files had
to keep agreeing on by hand. `BRACKET_ID_SRC`, `BRACKET_ID_PREFIX_RE` and
`BRACKET_QUALIFIED_KEY_RE` now compose the class rather than re-spelling it.
All three call sites consume the owner; the regex sources are byte-identical to
what they spelled, asserted against hand transcriptions of the pre-fix lines.

Guard. `scripts/lint-phase-id-drift.cjs` gains a bracket rule
(`findBracketGrammarDrift`), wired into `scanRepo` and tagged `kind`. It
deliberately does NOT copy the token rule's `line.includes(CANON_REF)` escape:
that escape is line-level, and verify's copy referenced the owner for the
MILESTONE field on the same line as the re-typed PROJECT-CODE class — so a
bracket rule with that escape would have kept passing on the very site under
review. Partial ownership is the drift; only a dedicated `// phase-id-owner:`
comment suppresses it.

Proof, end to end: planting the shipped verify.cts literal back into src/ makes
`npm run check:phase-id-drift` exit 1 naming `[bracket] src/verify.cts:1475`;
restoring it returns the gate to ok.

Tests. phase-id-drift-guard carries all three shipped literals as negative
fixtures, the same-line-owner-reference case, the case-widened evasion variant,
the sanction rules, and a temp-tree scan proving the rule is wired into
scanRepo rather than merely exported. continuation-grammar-parity drives the
pinned and capturing shapes over a 12-entry corpus and requires the same
verdict from both plus the same captured milestone — widening either alone
fails there.

* test(#2761): drop the out-of-scope source-grep exemption from the selector pin

The baseline-selector pin in tests/adr-612-bracket-heading-selection.test.cjs
read `src/*.cts` with readFileSync and regex, claiming the no-source-grep
escape with a source-text-is-the-product reason. CONTEXT.md's documented scope
(RULESET.TESTS.no-source-grep.exemption) reserves that escape for tests whose
subject is a runtime CONTRACT FILE — STATE.md, config.toml, hooks.json, agent
.md — and `src/*.cts` is none of those.

It was also broader than it looked: eslint-rules/no-source-grep.cjs matches the
marker in ANY comment in the file, so one block's claim disarmed the rule for
the whole ~700-line suite.

The pin itself is worth keeping — the BASELINE ARGUMENT at each call site is a
fact no behavioural test can recover (flipping verify's milestone-complete site
from LABEL_ONLY to ANY_BRACKET grants a tolerance it has never had, and every
behavioural test still passes), so pinning it does require reading the authored
source. That reading moved to `scripts/lint-phase-id-drift.cjs` — the seam's
own guard, where source scanning is sanctioned (`warn` scope) and already
happens for the grammar rules — as `countSelectorBaselines` /
`scanSelectorBaselines`, which return a structured census. The test asserts on
the returned data and touches no file text.

CONTEXT.md is unchanged: the exemption scope was not widened to fit the test.
No marker remains in the suite, so the rule is live across all of it again, and
eslint passes with the escape removed rather than relocated. A floor assertion
pins that the census actually found the five consumers, so the "no other file
consumes the selector unpinned" check cannot pass on an empty scan.

* docs(#2761): rewrite the changeset as a lead + deltas instead of one paragraph

The fragment was a single ~6,400-character paragraph that opened on internal
mechanics, buried the user-visible change, and named an internal test path
(tests/adr-612-bracket-phase-counting.test.cjs) that means nothing to a reader
of the CHANGELOG.

It now leads with what a user sees — bracket-style phase IDs are recognized on
the read path across roadmap, validate, verify and state — followed by compact
bullets for the behavioral deltas, the opt-in caveat, and the upstream
consequences. Both merge-added disclosures are kept: the #3185 legacy-sentinel
Phase-0 delta with the reason the bracket counter keeps the narrower rule, and
the enumerator's convention-argument default flip with the four newly-scoped
read surfaces and the note that archival and milestone-completion paths are
unchanged. Two deltas from this review round are stated as their own bullets:
per-occurrence classification in `missing_phase_details`, and workstream-scoped
convention resolution including the workstream-rollup count change.

The internal test path is gone and the body is down to ~3,850 characters. The
bullets render as sub-bullets under the CHANGELOG entry and the `(#NNNN)`
suffix still lands on a trailing paragraph rather than mid-list.
`npm run lint:changeset` passes.

* test(#2761): use helpers.cleanup in the drift-guard temp-tree test

`local/no-raw-rmsync-in-tests` rejects a bare `fs.rmSync` in tests — the shared
helper carries the Windows-EBUSY retry budget. The temp-tree scan added with
M3's guard coverage test used the raw call.

* docs(#2761): correct the occurrenceKey comment on qualified-key normalization

The comment claimed `bracketQualifiedKey` is "fold- and padding-insensitive, so
`[gsd.2] 01` and `[GSD.02] 01` are one phase". The fold half is right; the
padding half is not. `BRACKET_MILESTONE_NUMERIC_SRC` is `(?:[1-9]\d{2,}|\d{2})`,
so `bracketQualifiedKey('GSD.2-01', 'bracket')` returns null and that input
takes the composite fallback instead.

No behavior change — the two key spaces use different separators and cannot
collide — but the claim was checkable and wrong. Restated: the owner case-folds,
and padding-tolerance is not a property it has or needs, because each accepted
milestone has exactly one canonical spelling and `[GSD.2]` is malformed rather
than an alternate spelling of `[GSD.02]`.

* ci(#2761): give the coverage-gate job the heap floor the shard jobs already have

The gate's report steps parse ~2.5GB of merged raw V8 dumps in one
process at the runner's implicit ~4GB ceiling, so pass/fail comes down
to GC timing (run 31338081337 OOM'd; next passes the same volume at
28s). Deterministic locally: crashes at --max-old-space-size=4096,
completes in 11s at 8192. PR shard data is within 0.15% of green next
runs — the load is pre-existing, only the ceiling was missing. #2952
set 6144 on the shard-collection step; the gate job was missed.

* Revert "ci(#2761): give the coverage-gate job the heap floor the shard jobs already have"

This reverts commit 03c74a97c911e9ddc53675aded9c9bbb89f14cd1.

* fix(#2761): thread the resolved convention into cmdStateValidate's phase-directory lookup

#3208 replaced cmdStateValidate's `startsWith` prefix test with the canonical
`phaseKeyFromDir(...) === selectedPhaseKey` comparison. That is the right
surface, and it is why the lookup now needs the resolved `phase_id_convention`,
which the rewrite does not pass.

`phaseKeyFromDir` deliberately refuses to read a bracket directory without an
explicit signal (ADR-2121: a bracket dir is string-indistinguishable from the
legacy letter-prefixed-decimal family), so un-threaded it returns the whole dir
name as the key — `GSD.02-05-real-work` -> `GSD.02-5-REAL-WORK` — while the
STATE side is the bare `05` that `parsePhaseFromProse` yields. Both sides of one
comparison derived under different conventions is #2562's defect class, and this
file's other three `phaseKeyFromDir` call sites already thread against it.

Observable: a bracket repo whose phase directory plainly exists reported
`valid: false` and "no phase directory matches phase 05", and the drift scan
(plan-count mismatch, verification status) never ran. The pre-#3208 `startsWith`
missed the same directory but skipped silently, so this is a visible-failure
regression on bracket repos, not a new miss.

Non-bracket conventions are byte-identical by construction: `extractPhaseToken`
branches only on `=== 'bracket'`, so null / 'milestone-prefixed' / unresolvable
compile the same path as the un-threaded call. The flat-legacy twin assertion
pins that.

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

* docs(#2761): note the cmdStateValidate convention threading in the changeset fragment

The fragment described the bracket read path as of the pre-merge branch. 504c64ff
added a shipped behaviour change — `state validate` now resolves bracket phase
directories — that the fragment did not mention, so the rendered changelog would
have under-described what ships.

Body text only; `type` and `pr` are untouched.

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

* test(#2761): invert the inherited-wart characterization — #3225 fixed it upstream

Required by the merge of next @ 86101ee6; test-only, no src delta.

This branch disclosed rather than fixed a pre-existing upstream wart: on a
LEGACY repo, `### Phase 999:` warned from `validate consistency` while
`validate health` suppressed it — the two verbs contradicting each other.
The case was pinned as a characterization test ("INHERITED WART, unchanged")
precisely so it would INVERT if upstream ever closed it, rather than rot
silently.

ae7dc529 (#3225) closed it, by adding the `isSentinelPhaseId` guard to this
very loop. So the assertion inverted on the merge — as designed. Flipped to
assert the FIXED behaviour rather than deleted: it is the negative-space
proof that this branch's `sentinelPhases` guard never had to grow a legacy
reading of its own, and it reds if a future conflict resolution keeps our
guard while dropping upstream's.

Added a scope control alongside it (a legacy NON-sentinel `### Phase 09:`
with no directory still warns), so deleting the loop outright cannot pass.

Union proven load-bearing in BOTH directions against the merged tree —
neither guard subsumes the other:
  - drop `isSentinelPhaseId(p)` (ours only) -> 1 red, exactly this case.
    Note upstream's own #3225 tests stay GREEN there: they cover the
    disk-side loops (sentinel dir on disk) and the gap-numbering filter,
    not the ROADMAP-side loop. This case is that site's only coverage,
    which is the second reason to keep it rather than delete it.
  - drop `sentinelPhases.has(p)` (upstream only) -> 4 red bracket suites
    (icebox-not-missing, health/consistency agreement, occurrence-aware
    suppression, checklist-index suppression).

tests/adr-612-bracket-read-tolerance.test.cjs 79 -> 80, all green.

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

* test(#2761): pin the three re-homed W006/W007 reads the merge left unfalsifiable

#3309/#3310 deleted the helpers this PR threaded (collectDiskPhases,
collectDiskPhaseEntries, collectArchivedPhaseDirNames,
forEachArchivedPhaseToken) and rebuilt their reads inside
src/planning-snapshot.cts + src/health-diagnostic-rules/*.cts. The convention
threading moved with them in the merge commit — but a mutation sweep over the
re-homed sites found three where reverting the convention argument changed real
CLI output and NOT ONE existing test went red. The pre-migration sites were
covered indirectly, through helpers that no longer exist, so the coverage did
not survive the relocation even though the behaviour did.

Each case is pinned at the CLI with its flat-legacy twin as the byte-identity
control, plus a non-vacuity control in the opposite direction:

  archivedPhaseTokens      revert -> "Phase 05 in ROADMAP.md but no directory on
  (planning-snapshot.cts)            disk" for a phase whose only directory is
                                     under .planning/milestones/v1.0-phases/
  roadmapPhaseCheckboxes   revert -> "Phase 09 in ROADMAP.md but no directory on
  (planning-snapshot.cts)            disk" for an unstarted `- [ ]` phase
  W007's extractPhaseToken revert -> "Phase GSD.02-77-orphan exists on disk"
  (roadmap-disk-consistency)         instead of "Phase 77 exists on disk"

Red/green: each single-line revert reds exactly its own case and nothing else;
every legacy control stays green in all three runs.

NOT pinned, and disclosed as droppable rather than given an unfalsifiable test:
buildValidPhaseSet's extractPhaseToken(dir, convention) in W002. That rule
unions disk tokens with roadmapDeclaredPhases and archivedPhaseTokens, and any
STATE.md reference a bracket disk token would rescue is already rescued by the
ROADMAP half — probed directly, the argument makes no observable difference. It
is threaded because it restores collectDiskPhases(planBase, convention)'s
derivation exactly, not because a test needs it.

Test-only; revertable independently of the merge commit.

* test(#2761): pin the two reads the #3165 extraction left unfalsifiable

DROPPABLE, offered as such. Test-only; the merge commit is correct without it.

#3428's extraction gave `collectAnalyzePhases` TWO call sites — the scoped
milestone window and the truncated-window recovery path. The merge threads
`convention` into both and swaps `detailKeys` with `phases` across the recovery.
Neither of those was falsifiable by the suite as it stood:

  - passing a NULL convention at the FALLBACK site, with the scoped site still
    threaded, is green across all 518 tests of the bracket, roadmap and
    milestone-window files. Every pre-existing bracket assertion reaches the
    enrichment through the scoped window, so none of them can observe the
    fallback's reading at all;
  - dropping `detailKeys = fallbackScan.detailKeys;` — the line this merge
    authored — is likewise green, because no fixture that reaches the recovery
    path carries a checklist bullet, so `missing_phase_details` is `null`
    either way.

That is the same hole class lap 3 closed in 9914359c: an argument whose revert
changes real CLI output with zero reds.

Pinned at the CLI on the shape that reaches the fallback on a bracket repo — a
MID-MIGRATION ROADMAP: bracketed ACTIVE milestone, its phase-detail sections
and checklist bullets sitting after an intervening CLOSED legacy milestone (so
the window closes over prose only), plus one legacy `### Phase N:` section of
its own. Six tests:

  - a NON-VACUITY control that removes the phase directories, so #3428's own
    precondition fails and the result is the empty one the recovery exists to
    replace — this is what proves the rest read the FALLBACK's output rather
    than the scoped scan's;
  - the directory assertion (`disk_status`/`plan_count`/`summary_count` for
    canonical `{CODE}.{MM}-{PP}-slug` dirs) + a flat-legacy twin asserting
    byte-equal shape, and that the twin is the right answer rather than a
    shared wrong one;
  - `missing_phase_details: null` for phases the recovery just found, and its
    companion direction — a bullet with no heading anywhere is STILL reported,
    so a fix that merely suppressed the report does not pass;
  - a non-bracket repo taking the same path unaffected.

Red/green, each mutation reverted afterwards:
  - fallback call site -> `null` convention: exactly 2 reds, both directory
    assertions in this block; 307 other tests green, including upstream's own
    #3428 tests in tests/milestone-window-single-owner.test.cjs.
  - `detailKeys` swap deleted: exactly 2 reds, both `missing_phase_details`
    assertions; 414 other tests green.
  - `matchPhaseDirs` 3rd argument dropped (the lap-2 site): 4 reds — the 2
    already on record plus this block's 2, which is the point: one seam, now
    reached by two paths.

DISCLOSED IN THE TEST BODY WITH MEASURED OUTPUT, not fixed: `hasPhaseEntries`
(src/roadmap-parser.cts) is convention-blind, so on a PURE-bracket ROADMAP the
window classifies COMPLETE and #3428's recovery is gated off entirely. That
document returns `{"scope":"complete","phase_count":0,"next_phase":null,
"phases":[]}` — the "genuinely empty milestone" answer, the indistinguishability
#3184 introduced `scope` to remove — where the flat-legacy twin returns
`{"scope":"truncated","phase_count":2,...}`. Widening it changes the value of an
upstream-owned output field on bracket repos, so it is a behaviour slice (the
PR-2.5/PR-4 convention-less-readers question), not a merge-round change. The
mid-migration shape pinned here is the reachable half.

* fix(#2761): mirror the bracket terminator in the milestone-scope write guard

parser's terminator vocabulary — "a level 1-3 heading that is not a Phase
heading and carries a milestone signal". On this branch that vocabulary is
convention-SELECTED: `computeBracketSectionEnd` adds `isBracketMilestoneBoundary`
as a terminator arm, and the ADR-canonical `## [GSD.09] Hidden` carries NO
vN.N token, NO ✅/📋/🚧/🔄 marker, and not the word "Milestone". Left
unmirrored, the guard accepted exactly the description it exists to reject.

NOT a defect on clean next — a bracket heading terminates nothing there. The
branch widens the terminator set, so the branch owns the mirror.

MEASURED at the CLI seam before the fix (bracket fixture, one milestone,
one phase):

  $ gsd-tools phase add $'Sneaky\n## [GSD.09] Hidden'   -> exit 0, written
  $ gsd-tools phase add 'Innocent follow up'            -> exit 0, written
  $ gsd-tools roadmap milestone-scope
    { "scope": "complete", "phases": ["01","1"], "phase_count": 2 }
  $ grep '^### Phase' .planning/ROADMAP.md
    ### Phase 1: Sneaky
    ### Phase 2: Innocent follow up      <- in the document, out of the window

After the fix the first add exits 1, ROADMAP.md is byte-unchanged and no
phase directory is created. The legacy twin (same text, no
`phase_id_convention`) still exits 0 — opt-in only, base behaviour preserved.

SHAPE
- `findMilestoneScopeHeadingLines(text, convention)` — REQUIRED, the same
  tripwire `scanMilestonePhaseIds` carries in the merge commit and for the
  sharper reason: a blind call here fails OPEN (the guard quietly ACCEPTS a
  window-narrowing description), so a future call site must fail to COMPILE.
  Census is one caller, which pays nothing for it. A non-bracket value takes
  the pre-existing path byte-identically. The bracket arm routes through
  `isBracketMilestoneBoundary`, the same single-owner phase-vs-milestone
  discriminator `computeBracketSectionEnd` consults; no second bracket-heading
  grammar is spelled here.
- `selectedBracketId` is deliberately `null`, so the same-milestone
  CONTINUATION exemption never fires and a value naming the ACTIVE milestone
  is flagged too. That is this predicate's third stated conservatism and
  rests on its own existing argument: which milestone is active is a property
  of the document at write time, not of the text being validated, and
  over-rejecting is one-directional.
- `assertDescriptionPreservesMilestoneScope` takes `cwd` and resolves through
  the branch's tolerant try/catch — this guard runs BEFORE `loadConfig` and
  before the ROADMAP existence check, so an unresolvable convention must
  degrade to the legacy vocabulary, never turn a rejection into a crash.
- The error's marker list gains the bracket form only when the project is on
  the bracket convention.

RED/GREEN
- Revert the bracket arm -> 2 reds (phase add; insert + add-batch), the
  non-bracket control and both no-false-positive cases stay green.
- Revert the probe threading in the merge commit -> 1 red (the probe case).
- 6 new cases in the #3262 file, each with a non-bracket or
  no-false-positive control: fenced bracket milestone heading and bracket
  PHASE heading are both non-violations.

Droppable: revert this commit and the merge stands on its own; the branch
then ships the gap as a disclosure instead of a fix.

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

* docs(changeset): narrow the enumerator claim to the directory set — per-entry rendering in progress/stats/init-manager is display-slice scope

Round-7 review confirmed 3 of the 4 surfaces named by the closing claim
parse each directory or heading with legacy-only patterns that live in
files this PR does not touch (commands.cts:1766, commands.cts:2116,
init.cts:2241). The claim now states exactly what this slice delivers:
the scoped directory set. Their per-entry conversion is display work,
deferred to the epic's display PR with the statusline/progress-card
gates it belongs beside.

* fix(#2761): de-accident the unmatched-milestone bracket fixture, re-pin to #3480's withhold contract

tests/adr-612-bracket-phase-counting.test.cjs:515 ("a milestone that
does NOT match STATE is not scoped in") asserted total_phases === 0.
Since today's merge brought in 70b5c1a1 (#3354/#3480, already in
`next`), buildStateFrontmatter withholds total_phases (omits the key,
read back as null) for a milestone that is genuinely sectioned but
matches no ROADMAP heading, instead of substituting a computed number
— the fixture's `state json` read now returns null, failing the
strictEqual(0) assertion.

The original single-section fixture's 0 only ever survived by
accident: hasMilestoneSectioning requires >=2 milestone-vocabulary
headings to call a ROADMAP sectioned, and its isPhaseHeading helper
recognizes only the legacy `Phase N:` text form — so the bracket
phase heading `### [GSD.03] 09: Not this milestone` (title containing
the word "milestone") miscounted as a second milestone heading,
tipping hasMilestoneSectioning true and routing to the disk-count
branch. With that miscount removed, the same one-section fixture
reads 1 (the non-matching milestone's phase count leaking into v2.0's
total) — proving the pinned 0 was never validating the scoping this
test claims to exercise.

Replaced the fixture with two genuine milestone sections (GSD.03,
GSD.04), neither matching STATE's v2.0, with phase titles carrying no
incidental vocabulary — the real #3354 shape. Re-pinned the assertion
to null, matching upstream's own tested contract (tests/state-
document.test.cjs, "#3354 with nothing stored, the key is omitted
rather than written from the dir count").

Verified: file green 3/3 runs (104/104), full state-suite regression
771/771 green. The isPhaseHeading gap that made the old fixture
accidental is a real, pre-existing, upstream-owned limitation
(hasMilestoneSectioning only guards >=2-section conflation, not a
single non-matching section leaking through) — not introduced by

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

* chore(#2761): exempt two self-authored-fixture regexes from #3441's unbounded-quantifier rule

Both sites parse the STATE.md the test itself just wrote to its own
tmpdir — fixed-size fixture output, not adversarial or document-scale
input. Exempted with the justification-comment pattern the tree's own
tests use for this exact case (settings-integrations, copilot-install,
research-agent-profiles). The sites predate the rule; #3441 landed on
next this morning and this branch picked it up in the catch-up merge.

* fix(#2761): fix forward two next-movement test regressions from the round-11 rebase

origin/next's #3573 newly threads STATE's stored `milestone:` value into
`state json`'s buildStateFrontmatter call (previously always `undefined` on
that read surface). Two pre-existing PR-2 fixtures reach code paths that
call never exercised before that merge:

- RED (repro2 case C): a version-less, all-bracket-id ROADMAP now hits
  getMilestonePhaseFilter's pre-existing (unaffected by this branch) row-5
  `versionResolved && !headingFound => SCOPE.UNSCOPED` rule, which withholds
  `progress.percent` even though the scoped total_phases/completed_phases
  are still correct. That row-5 rule is load-bearing for six other
  version-less-document pins in this same file; narrowing it broke seven of
  them in testing, so production code is untouched here. Reassert the
  test's real claim (scoping, via total_phases/completed_phases) and
  disclose the now-withheld percent instead of silently dropping it.

- PIN (repro12 LEGACY control): a fenced-example-vs-real version heading
  fixture. #3573 routes this read through sliceMilestoneWindow (fence-aware)
  instead of the legacy anyMilestonePattern raw scan (fence-blind) this pin
  was disclosing as out of scope, so the fixture no longer exercises the
  blind path — total_phases moves from the whole-doc 4 to the correctly
  scoped 2. Re-pinned with an upstream-attributed comment, matching this
  file's existing house style for prior origin/next movements (see the
  sibling "PIN (G3 LEGACY control)" comment).

Both are test-only fix-forwards: no production code changed. The remaining
12 failures in this file at 27363e9d0 (dropped seam commits' VERIFICATION.md
naming + fixture updates) are pre-existing and deferred to the stacked
follow-up per the task's own scope.

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

* fix(#2761): thread phaseIdConvention explicitly at the two write-adjacent enumerator call sites (round-11 BLOCKER)

listMilestonePhaseDirs' phaseIdConvention param lost its `= null` default
(phase-locator.cts), so an omitted convention now means "resolve from
config" instead of "explicitly not bracket" — a deliberate flip, but
milestone.cts and state.cts were not in the PR-2 diff and both call the
enumerator without threading it:

- milestone.cts cmdMilestoneComplete (the single #3597 shared derivation
  feeding the stats loop, --dry-run preview, and the real archive/rename
  pass) now resolves phase_id_convention once and threads it explicitly,
  so a bracket project's `milestone complete` archives its real
  bracket-declared phase directories instead of silently inheriting
  whatever the enumerator's lazy default resolves to.
- state.cts cmdStateUpdateProgress's own enumerator call threads the same
  resolved convention. Empirically this does not change the #3217 withhold
  gate (scope is assigned before headingConvention resolves in
  getMilestonePhaseFilter, so it's convention-independent either way) or
  the reported percent (already correctly threaded via
  computeUpdateProgressPreview -> buildStateFrontmatter); it closes a
  second, silently-resolved answer to the same question this file's own
  ONCE-and-THREAD rule (~:2300) already states as policy.
- state.cts's other listMilestonePhaseDirs call site (the state-sync
  scope-only read, ~:4791) is left unthreaded on purpose, with an inline
  note explaining why: only `.scope` is consumed, and `.scope` is set
  before convention resolution in getMilestonePhaseFilter, so it cannot
  disagree with a threaded convention.

Both enumerated sets are pinned by new tests (round-11 BLOCKER block in
tests/adr-612-bracket-phase-counting.test.cjs), including a mutation-style
regression check on the milestone.cts fix (forcing the un-threaded default
back on makes the pinned test fail, catching a regression to the
pass-all-degrade legacy reading).

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

* fix(#2761): correct the changeset's false archival claim and amend ADR-612 for the round-11 M2(2) split scope

The changeset (.changeset/2761-bracket-read-tolerance.md) asserted "The
archival and milestone-completion paths are unchanged" — false: both
paths reach the widened enumerator, and this PR now threads their
convention explicitly (previous commit). Replaced the closing paragraph
with an accurate description of what changes for a bracket project at
those two call sites, and notes both enumerated sets are pinned by tests.

ADR-612 (docs/adr/612-bracket-phase-id-convention.md) amended per M2(2):
the 2026-08-03 PR-2/PR-4 boundary proposal is added in-body (PROPOSED,
not stamped — mechanics per docs/contributor-standards.md:143 reserve ADR
ratification to maintainers), rescoped to what actually ships in PR-2
(#2761) now that the round-11 M1 split moved the completion-seam
threading (isPhaseArtifact/scopeToPhase, phase-id.cts:964-1090) out into
a separate, stacked follow-up PR referenced generically via epic #612:

- state.cts read-tolerance (both total_phases derivations, the #1514
  retirement filter) moves into PR-2's row, alongside milestone.cts,
  reflecting the round-11 fix above.
- the write-observability point is restated in terms of what actually
  ships: explicit threading at two named call sites, pinned by tests,
  rather than silent inheritance.
- the completion-seam threading is named and explicitly excluded from
  PR-2's scope, with a new ratify item (5) and a Negative consequence
  bullet covering the sequencing cost.

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

* fix(#2761): repair round-11 response gaps — disk-side sentinel bug, test-fixture bug, scanMilestonePhaseIds caller drift

Four independently-verified gaps in the round-11 repair response:

1. isSentinelPhaseId (src/phase-id.cts) treated a bare, untagged phase
   directory under phase_id_convention: "bracket" (`0-bootstrap`, no
   `{CODE}.{MM}-` prefix) as sentinel milestone 0 by falling through to the
   legacy leading-int rule when the bracket-tag match failed. This silently
   dropped a real, on-disk, milestone-declared phase directory from
   `listMilestonePhaseDirs` (phase-locator.cts:424, the only unguarded call
   site) and undercounted completed_phases/percent. Mirrors the carve-out
   already present on both heading-side counters (state.cts's
   countRoadmapPhaseHeadings guards its bare-0 exclusion with `bracketId &&`;
   roadmap-parser.cts's scanMilestonePhaseIds composes the bare-token rule as
   999-only) — under bracket convention, milestone 0 is expressed only via an
   explicit bracket tag, so an untagged leading 0 is a real phase token.

2. tests/adr-612-bracket-phase-counting.test.cjs's writeProject fixture
   hardcoded `01-VERIFICATION.md` for every "complete" phase dir regardless
   of the dir's real phase token. Under legacy convention this file already
   correctly failed #3511's strict isPhaseArtifact match for any dir other
   than phase 01 (the fixture never modeled what it claimed to); under
   bracket convention the pre-existing ambiguity fail-safe admitted it
   regardless. The two readings' disagreement was mistaken for a missing
   completion-seam threading (isPhaseArtifact/scopeToPhase convention
   awareness, correctly split out to the stacked #3644 per round-11's M1).
   Replaced the hardcoded name with verificationNameFor(dir), deriving the
   real per-phase filename from the production normalizePhaseName the same
   way cmdScaffold does — the 7 failing "flat-legacy-twin" / CHARACTERIZATION
   assertions pass on #2867's own code with no seam threading required, and
   the genuine seam-dependent cross-phase-stray-exclusion test the fixture
   fix would otherwise have hidden lives on the stacked branch instead.

3. tests/roadmap-parser.test.cjs's two #3577 tests still called
   scanMilestonePhaseIds with the old single-Set return shape; this PR
   changed it to `{ ids, qualifiedIds }` for every other caller but missed
   these two, which don't touch #2761/bracket code at all. TypeErrors at
   runtime, not silently-wrong assertions. Updated both call sites.

4. .changeset/2761-bracket-read-tolerance.md gains a paragraph disclosing
   fix 1 above, so the changeset stays accurate to what actually ships (the
   round-11 BLOCKER was exactly this changeset going stale once).

Verified: tests/adr-612-bracket-phase-counting.test.cjs +
tests/continuation-grammar-parity.test.cjs + tests/roadmap-parser.test.cjs =
354/354. adr-612-{coherence,grammar,heading-selection,read-tolerance,
selection.property}.test.cjs + collision-characterization = 287/287
(CONFIRMED-CLEAN set, unaffected). Full unfiltered suite run separately.

PR #3643 (round-11's M1 split, opened draft per that round's explicit
requirement) was auto-closed by this repo's own draft-PR policy 11 seconds
after opening — draft PRs are unconditionally closed here. Reopened as
non-draft #3644 (same branch, same commits, DO NOT MERGE / stacked-on-#2867
marker in the body, enhancement template) since the repo's own bot confirms
non-draft contributor PRs are tolerated even off-template.

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

* fix(#2761): narrow the state-update-progress pin claim to what mutation testing actually proved, add the test that covers the rest

Round-11 BLOCKER response gap (verified, not a guess): the changeset and
ADR-612 amendment point 2 both claimed the round-11 tests pin
`cmdStateUpdateProgress` so "a future change to the enumerator's default
cannot silently move ... what state update-progress reports without failing
a test." Mutation testing disproves this. Reverting BOTH the state.cts
explicit `phaseIdConvention` thread AND simulating the phase-locator.cts
pre-#612 hardcoded-null default (`phaseIdConvention: null` at that one call
site) leaves the existing PIN test ("writes a real percent for a
bracket-scoped milestone") green, because that percent comes from
`computeUpdateProgressPreview` -> `buildStateFrontmatter`, a separately and
already-correctly-threaded derivation the state.cts inline comment at ~:965
already candidly documents.

What the reverted thread DOES change, empirically, is `phaseDirs`/`totalPlans`
— the enumerated `.value` this call site feeds into the #3233 zero-plans
no-op gate a few lines below. That is the one place a regression at this call
site is observable in the command's output. Added a test that pins exactly
that: a bracket milestone whose declared phases carry no plans on disk,
alongside a decoy directory that plainly does not belong to the milestone
(no bracket tag, no phase token) but does have a plan. Correctly scoped, the
decoy is excluded and the #3233 no-op fires (`updated: false`). Degraded to
the pass-all legacy reading, the decoy is swept in, `totalPlans` flips
nonzero, and the no-op never fires (`updated: true`).

Mutation-tested against both scenarios:
- Reverting ONLY the state.cts explicit thread (falls back to `undefined`,
  which `getMilestonePhaseFilter` resolves via the identical
  `resolvePhaseIdConvention(cwd, undefined)` call the explicit thread also
  makes): new test stays green — confirms the single-hunk thread really is
  pure single-derivation hygiene, exactly as the existing inline comment
  claims, for this test too.
- Forcing `phaseIdConvention: null` at that call site (the combined-revert
  scenario the round-11 mutation testing actually exercised): new test FAILS
  (`updated: true, percent: 0` instead of the expected `updated: false`).
  Restoring the real code makes it pass again.

Narrowed the changeset and ADR-612 point 2 prose to match: `cmdMilestoneComplete`'s
enumerated set is pinned against a pass-all-degrade regression (genuine,
already verified in round 11); `cmdStateUpdateProgress`'s own call site is now
pinned against the #3233 zero-plans no-op specifically, not against the
reported percent, which the prose no longer claims. Added a one-line pointer
to the new test in the state.cts inline comment. No production behavior
changes — test and documentation only.

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

* docs(#2761): reconcile ADR PR-2 module map

* fix(#2761): restore #3639's dir-aware W007 sentinel exclusion lost in the rebase replay

The rebase replayed this file's pre-#3639 patch over next, reverting the
isSentinelPhaseId(token) -> isSentinelPhaseDir(dirName) fix: the extracted
token is milestone-stripped, so a bracket sentinel (GSD.999-07-icebox,
GSD.00-01-backlog) was invisible to the id predicate and false-fired W007.
Restores upstream's call and comment verbatim; the branch's convention-aware
token remains for the diagnostic message only.

Caught by next's own #3639 regression tests (CI shard 2). Local: the file's
18/18, health-diagnostic-rules 165/165, full npm test exit 0.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MeAsZNfhiUQioFPA4ygEGS

* docs(#2761): ratify scope and correct surface claims

* test(#2761): strengthen legacy selection and drift claims

* docs(#2761): correct the enumerator claim, scope list, and ratification receipt

Three documentation corrections, none touching production code.

The changeset claimed the shared phase-directory enumerator "now defaults its
convention argument to 'not yet resolved' rather than 'resolved, and not
bracket'". That is false: `phase-locator.cts:375` still destructures
`phaseIdConvention = null`, and the lazy resolve-from-config fires only on
`undefined` (`roadmap-parser.cts:941`, `:1928` — whose own comment records that
"explicit null still means 'resolved and non-bracket'"). Measured: only 4 of 17
`listMilestonePhaseDirs` call sites thread a resolved convention (`milestone
complete` and `state`'s three). The changeset went on to name `progress`,
`stats`, `phase list` and the init manager view as now receiving a correctly
scoped set — those are precisely callers that omit it. Replaced with what the
code does, and the deferral stated plainly.

The ADR's PR-2 row omitted `scripts/lint-phase-id-drift.cjs` (+141/-14) and
`scripts/lint-phase-enumeration-drift.cjs`, both changed by this PR. An
under-claim rather than an over-claim, but the row is the epic's
scope-of-record.

Ratify item 5 asserted maintainer ratification while citing only the review that
raised the question. It now cites the review that granted it (#2867 review
`5012940978`, 2026-08-24) and quotes its terms, so the claim carries its receipt.

Found by an adversarial review pass over the round-12 diff. (#2761)

* fix(#2761): drop the no-op --json that strict argv now rejects

Surfaced by the rebase onto next, not by a change in this PR's subject.

#3884 ("failure is a value — strict argv", e20744eac) made an unrecognized
flag a hard error: `state validate --json` now exits 1 with
`unknown flag "--json"; accepted: --strict` on stderr and EMPTY stdout,
where the token was previously accepted and ignored. `state validate` never
had a `--json` flag — JSON is its only output shape — so the argument was a
silent no-op from the start.

The helper parsed that empty stdout, so all five subtests in the
"state validate resolves bracket phase DIRECTORIES" suite failed identically
with `SyntaxError: Unexpected end of JSON input` at the JSON.parse, masking
what they actually assert.

Dropping the token restores the same envelope the helper already parsed. No
assertion changes. Verified against the fixture the suite builds: exit 0, and
the output carries the S005 plan-count warning the drift assertions require
with no S004 phase-directory warning — i.e. the bracket directory resolves,
which is the behaviour these tests exist to pin. 94/94 in the file.

* fix(#2761): exempt the phase-counting suite from the docs-guard lane

Surfaced by the rebase onto next. #3753 (107eb8c1d) added
lint-docs-guard-registration, which requires every test file that reads a
docs/ path to be either registered in the docs-guard lane or carry an
explicit marker. It flags adr-612-bracket-phase-counting.test.cjs, which
reads no docs/ path at all.

The file's only docs/ occurrence is the ADR-612 Decision 1 citation in a line
comment; every read call it makes targets a tmpdir .planning fixture. It trips
Detector 3, whose DOCS_TEMPLATE_LITERAL_RE sees an odd prose backtick in the
comment block above that citation as opening a template literal and reads the
span between them — citation included — as a docs/ path expression. That
detector documents this trade in its own header: it favours recall, and says a
false positive costs one docs-guard-exempt marker with a reason. The baseline
records the same class ("comment-only mentions") for 46 of its entries.

Registration was the wrong side of the trade here: it would run this suite in
the docs-guard lane on docs/ changes whose content it never reads.

Three pieces, matching what the gate requires and what its 54 existing entries
already do:
  - the marker in the file's header window, written without backticks so it
    cannot itself disturb the parity tracking findExemption does;
  - the basename in DOCS_GUARD_EXEMPT_BASELINE, since the ratchet fails a new
    marker until the baseline is deliberately updated — the reviewable diff is
    the point;
  - the FIX 3 per-file fingerprint, derived with the lint's own
    extractDocsPathReferences rather than retyped, so the exemption fails loudly
    if the set of docs/ paths this file mentions ever changes.

Gates: lint-docs-guard-registration 0 violations, ci-docs-guard-registry 51/51.

* docs(#2761): correct the bare-0 comment and state what opting into bracket costs

Round-13 review items Minor 2 and Minor 3, both still live on the previous head.

Minor 2 — src/phase-id.cts. The comment block claimed "Bare `0` is admitted
alongside it because a 0.x sentinel is a legitimate identity that predates
padding", which contradicted both the shipped constant and its own next
paragraph. BRACKET_CANONICAL_NUMERIC_SOURCE is `(?:[1-9]\d{2,}|\d{2})`;
measured against it, `0` is rejected while `00`, `05`, `99`, `100` and `999`
are admitted. The paragraph four lines below already recorded the removal
("the earlier `(?:\d{2,}|0)` ... admitted ... a bare `0` that pad2 never
produces"), so the block asserted and denied the same fact. The stale sentence
is replaced with what ships: `00` is the backlog sentinel's canonical padded
identity, `\d{2}` already covers it, and nothing needs the unpadded spelling.
No behaviour change — the constant is untouched.

Minor 3 — docs/CONFIGURATION.md. The phase_id_convention row described the
read-path widening but never said what a repo GIVES UP by opting in. Added:
on a bracket repo a heading whose bracket is followed directly by a digit is
read as a phase heading, so `### [RFC.2119] 5:`, `### [v1.0] 2024:` and
`### [ADR.612] 3:` — legal prose headings under any other convention — are
claimed as phases and move phase_count, total_phases and W006. Those three
shapes are the ones phase-id.cts's own selector comment names as the reason
the widened read is selected at construction time from this value rather than
applied everywhere; the row now carries that trade instead of only its
upside.

Gates: tsc --noEmit exit 0, npm run lint:ci exit 0, npm run test:unit
33890/33891 with the single failure being emitted-attribution's base drift
against a next that moved after the rebase (133/133 against the rebase base;
this push re-bases onto the current tip, which resolves it).

* chore(#2761): give this slice its own changeset and document the membership scoping

PR-2 (#2867) merged separately, so the completion-seam entry no longer
belongs appended to its fragment. Restore .changeset/2761-bracket-read-tolerance.md
to the merged version and carry this slice's entry in its own fragment
with the correct pr: field, clearing changeset-lint's fail_pr_field_drift.

Document the membership scoping in docs/CONFIGURATION.md, which the new
Added fragment requires under lint:docs.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs(#4142): cite #4142 in the completion-seam changeset backlink

The fragment's trailing backlink named #2761 — the delivered PR-2 sibling
whose ratified scope excluded this completion seam — rather than #4142,
the issue this PR actually closes. The PR body already carries the correct
`Closes #4142` with `Refs #2761` for lineage; only the changeset disagreed.

Backlinks are a convention rather than a machine-checked field, so
changeset-lint passed on the wrong citation.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BAWrF68cHxW3Ek5CsGUeqJ

* docs(#4142): name phase complete and workstream-inventory in the unthreaded-caller disclosure

Round-4 review Major. The changeset's "still unthreaded" list named only the
aggregate scans (uat, audit, init projections, gap-checker, phase-locator) and
omitted two call sites that also stay on the include-everything fail-safe for
bracket directories after this PR:

- cmdPhaseComplete (src/phase.cts:3394,3405) — `phase complete`'s advisory
  UAT and VERIFICATION warning pre-scan calls scopeToPhase two-arg, so a
  bracket phase can still be warned about a cross-phase stray it does not own.
- src/workstream-inventory.cts:663 — calls isPhaseComplete, which this PR
  made convention-aware, without resolving a convention to pass it.

Because roadmap.cts's write path WAS threaded here on ADR-3180 section 7.4
read/write symmetry, leaving `phase complete` off both the code and the
disclosure was the omission most likely to be read as covered by "the same
protection #3511 already gives legacy directories". That claim is now scoped
to the call sites this PR threads, in both the changeset and the shipped
docs/CONFIGURATION.md cell, which carried the identical omission.

Disclosure only — no production code changed. Threading these two remains
follow-up-slice work alongside the epic's other convention-less readers.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01P959Zm5r2KhsMF83UzXDFJ

* fix(#4142): scope phase completion verification by convention

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

* test(#4142): refresh macOS conformance tier

---------

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-09-12 20:39:16 -04:00
Tom Boucher
329b7aadb4 Merge pull request #4672 from open-gsd/refactor/4653-drain-containment-duplicates
fix(#4653): make path containment one decision, narrow the export, and close a symlink escape — Phase 3 of #4636
2026-09-12 19:33:20 -04:00
sim
2a6f74027f chore(#4653): backfill PR 4672 into both changesets
Also corrects the Changed fragment: it named three containment exports as the
only ones, which stopped being true when the lexical family was added to close
DW1/DW9. It now describes one decision resolved two ways, and says why the
lexical pair exists rather than leaving a reader to assume it is a weaker
alternative to the realpath form.

scripts/lint-docs-required.cjs now passes (ok_docs_updated) — it could not
evaluate against the mandated pr:0 placeholder.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-12 18:49:48 -04:00
sim
bbc3f131be refactor(#4653): make containment ONE decision, resolved two ways
Satisfies #4653 DW1 and DW9, which were the phase's outstanding acceptance
criteria: every other implementation must be deleted or route its containment
DECISION through the canonical predicate, and no surviving wrapper may decide
WHETHER a path is contained.

Three implementations were being retained with their own comparisons, on the
argument that each needs LEXICAL resolution — a realpath-based predicate is the
wrong tool wherever a symlink must be preserved rather than resolved. That
argument is correct about RESOLUTION and was being used to justify owning the
DECISION too. Those are separable, and separating them is what closes the
criteria honestly rather than by reinterpretation.

  isContainedIn(resolvedTarget, resolvedRoot, pathImpl?)   module-internal

is now the single place this repo decides containment. It is separator-aware, so
a sibling merely sharing a prefix (`<root>-evil` against `<root>`) is still
rejected. Two exported families sit on it and differ ONLY in how a candidate is
resolved before the decision:

  assertWithinRoot / tryWithinRoot                realpath-resolving
  assertWithinRootLexical / tryWithinRootLexical  path.resolve only, no I/O

The lexical pair carries `opts.pathImpl`, so win32 separator semantics stay
testable off Windows — that seam already existed in isPathConfined and would
have been lost by a naive collapse.

The three call sites now take their decision from the predicate and keep only
what is genuinely theirs:

  external-descriptor-trust isPathConfined   delegates outright; pathImpl forwarded
  installer-migrations ensureInsideConfig    delegates; keeps its own message and
                                             its LEXICAL fullPath, which callers
                                             consume for existsSync and journal rows
  gsd-tools.cjs isInsideDir                  delegates; keeps its own `target !==
                                             root` condition, and the separate
                                             symlink refusal above it stands

DW5 is not weakened by this. That criterion binds the symlink oracle and the
ancestor canonicalization; both are untouched. The only change inside
validatePath is three comparison lines becoming one call, and the rejection
string `Path escapes allowed directory: <resolved> is outside <base>` stays
byte-identical because it is an observable CLI contract.

What this does NOT do, stated plainly: the lexical family still cannot see a
symlink. That is a property of lexical resolution, not a gap in the seam, and
the three callers that need it are the three that must pair it with their own
symlink refusal — which is exactly what the fix earlier in this phase added at
the install sites. The doc comment says so at the definition, and CONTEXT.md and
docs/explanation/security-model.md are corrected: they previously described
these three as deliberately NOT routed through the predicate, which is no longer
true.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-12 18:33:01 -04:00
sim
6f0e5ccf85 fix(#4636,#4653): close the symlink hole, revert a wrong collapse, fix six review findings
The RED checkpoint and two orthogonal reviews found eight defects. All fixed here.

THE COLLAPSE THAT WAS WRONG — installer-migrations. Routing ensureInsideConfig's
containment decision through the realpath-based canonical predicate broke four
tests, and the failure message says it plainly: "migration path escapes
configDir: extensions/gsd.cjs". That module's entire contract is that a
symlinked managed path is snapshotted, restored and backed up AS A LINK and
never dereferenced. The canonical predicate dereferences, then rejects the
result for escaping configDir — so it destroys exactly the thing the module
exists to preserve. Reverted to lexical, with the ruling recorded above the
function so it is not collapsed a third time. normalizeRelPath is the real
pre-gate there; it throws on absolute paths and '..' before this check runs.

That makes THREE deliberately-retained implementations, not two, and they share
one shape worth naming: a realpath-based predicate is the wrong tool wherever a
symlink must be PRESERVED rather than resolved. CONTEXT.md and
docs/explanation/security-model.md are corrected — both previously described
ensureInsideConfig as collapsed.

THE MISSED CONSUMER. tests/security-prompt-injection.security.test.cjs
destructures validatePath from the compiled lib; un-exporting it turned five
tests into TypeError. It appeared in my own earlier search output and I did not
follow it up. Translated under the same rule as the rest: assertions on the
rejection REASON go through assertWithinRoot, boolean-only through
tryWithinRoot.

VALIDATE-ONE-PATH-USE-ANOTHER, FOUND TWICE MORE. This is the fourth and fifth
occurrence in this epic of the exact defect it exists to prevent.
  - scripts/check-glossary-refs.cjs decided containment on `token` and then
    stat'd a separately re-joined path.join(ROOT, token). The ContainedPath is
    now carried through to the probe, so the validated value is the probed one.
  - src/init.cts computed skillPathContained and DISCARDED it, re-joining from
    the raw input for the existsSync and read. The branded type exists to make
    that a type error and here it was inert.

AND THE OVER-CORRECTION OF THAT FIX, caught before it shipped. The first attempt
also substituted the validated value into the EMITTED `ref` for a global skill.
That value is a display token, not a path anything reads through — the only fs
access in that branch runs on the lexical path beforehand — so substituting it
changed emitted output two ways: it is realpath-resolved, so a symlinked global
skills directory would have emitted its resolved target instead of the user's
own path, and it came from path.join, so Windows would have emitted a backslash
where the template has a literal '/'. Restored, with the distinction recorded:
the containment check there is a GATE, not a path producer.

A TEST THAT COULD NOT FAIL. The first symlink regression planted its symlink
from inside a hooked fs.readdirSync and never asserted the planting happened —
if the hook did not fire, the "nothing was written outside" assertion passed
trivially, green against vulnerable code. It now asserts the plant, matching its
sibling. The other two were re-checked: one already asserted its equivalent, the
other plants synchronously and cannot silently no-op.

THE SYMLINK FIX ITSELF, now that the tests are proven red on the matrix.
isPathConfined is lexical by design and structurally cannot see a symlink; three
callers relied on it with no defense of their own. install-engine.cts:1608 and
install-profiles.cts:880 refuse to mkdir/write through a link — mkdirSync with
recursive:true does NOT throw on an existing symlink-to-directory, so a planted
link redirected the SKILL.md write outside the install root.
install-profiles.cts:755 refuses to read through one — statSync FOLLOWS links,
so an outside file's contents were returned and installed as a skill body. Each
mirrors the guard retired-artifact-cleanup.cts:77 already uses.

Severity stated accurately rather than dramatically: only the read at :755 needs
no race. _removeGsdEntries sweeps a pre-planted link at :1608 before the write
loop, and :880's stageDir is a fresh mkdtemp, so both of those require winning a
window. They are fixed as defense-in-depth, not as live exploits.

ALSO: the Changed changeset claimed "every command's observable behavior [is]
unchanged". Three rejection messages are reworded. It now says so, and says that
none of them reveals a host path it previously hid. A stale comment in
verify.cts still named validatePath; an init.cts warning hardcoded "resolves
outside the project directory" for a check that also rejects absolute paths, NUL
bytes and empty strings; and the rationale deleted with check-glossary-refs'
retired helper is restored, noting honestly that a rejected token is now
realpath-resolved before rejection rather than rejected by string comparison.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-12 13:59:52 -04:00
sim
9953d02184 docs(#4653): describe the consolidated path-containment seam in the security model
The security model's input-validation section still described path traversal as
a per-call check with a macOS symlink footnote. It now describes what actually
exists: one predicate, a module-internal engine, three exported shapes none of
which can hand back a usable path when the answer is unsafe, the branded return
type, and the named acceptance policy — including the point the old wording
invited a reader to get wrong, that allowing an absolute candidate does not
relax containment.

Also records the two checks deliberately NOT routed through the predicate and
why each is narrower or stricter rather than a second opinion, so a later
cleanup pass does not read them as stragglers.

Required by the Changed changeset: scripts/lint-docs-required.cjs makes
Added/Changed/Deprecated/Removed fragments demand a file under docs/, and
CONTEXT.md is at the repo root, so the glossary entry alone would not have
satisfied it. The lint currently reports invalid_pr against the mandated pr:0
placeholder and becomes meaningful after backfill.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-12 13:41:40 -04:00
sim
5967f1939a docs(#4653): record the path-containment seam in CONTEXT.md and add the changeset
The glossary had no entry for the containment predicate at all, which is the
epic's actual deliverable. The new entry states the engine/export split, the
branded type, the named acceptance policy, the preserved message contract, and
— the part most likely to be undone by a later cleanup — the two
implementations deliberately NOT collapsed and why each is stricter or
narrower rather than duplicative.

Glossary gate re-run: 269 refs, exit 0. Install-tree goldens regenerated and
confirmed byte-identical rather than assumed unchanged; lint:ci exits 0, so no
conformance-tier drift either.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-12 13:34:11 -04:00
sim
7086dcbbc9 test(#4636): failing-first coverage for symlink escape past lexical confinement
Tests only; no fix. These MUST fail.

Found while draining the containment duplicates in Phase 3, not by looking for
it: isPathConfined's docstring claims its callers are kept symlink-safe
upstream, and checking that claim showed it does not hold for three of its four
call sites. isPathConfined is lexical by design and structurally cannot see a
symlink, so where the claim fails there is no defense at all.

  install-engine.cts:1608     mkdirSync(recursive) + writeFileSync under dest
  install-profiles.cts:880    the same shape under stageDir
  install-profiles.cts:755    statSync/readFileSync, and statSync FOLLOWS links

SEVERITY, STATED HONESTLY, because the three are not equal and the first
impression was wrong.

  :755 is the real one and needs no race. It reads
  <capDir>/skills/<stem>/SKILL.md. Nothing prunes that path and nothing
  randomizes it, so a symlink planted there is followed and its content is
  returned — and then written into the install tree as a skill body.

  :1608 and :880 are defense-in-depth against a local race, not plain
  write-through. _removeGsdEntries (install-engine.cts:851-854) rmSyncs every
  entry whose name starts with kind.prefix, and the skill names ARE
  prefix+stem — so a symlink planted before the call is unlinked before the
  write loop reaches it. :880's stageDir is a fresh mkdtempSync path, so its
  name cannot be guessed in advance either. Both require winning a window.

That is also why the first two tests do not simply pre-plant a link and call
the function: written that way they PASS today, against vulnerable code, for
the wrong reason. They instead open the window deterministically by hooking a
call the function is guaranteed to make — the technique CLAUDE.md section 4
prescribes for injecting filesystem conditions, and the one already used in
tests/install-runtime-artifacts.test.cjs. No sleeps, no concurrency, no
flakiness: the window is opened by a synchronous side effect, not raced for.

Each test asserts the OUTCOME rather than the mechanism — the canary file
outside the root is byte-identical afterwards, or the installed content does
not contain it — so a fix is free to close the hole any way it likes. Symlink
creation is guarded so the Windows lanes skip rather than fail, and no test
uses chmod 0o000, which is vacuous on a bench running as root.

Folded into tests/install-write-confinement.test.cjs, the owning suite, whose
existing F2/M1 coverage coincidentally proves the gap: it tests the case where
the destination DIRECTORY is a symlink, which is already defended, and never
the per-entry case.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-12 13:30:16 -04:00
sim
cd58aaabf4 refactor(#4653): drain the containment duplicates and record the two rulings
Phase 3 of epic #4636, stage 3c. ADR-4650 decision 6: a wrapper may decide HOW
to degrade, never WHETHER a path is contained. Four implementations are drained
on that rule; two are retained, with the reasons recorded rather than assumed.

DRAINED — the containment decision now comes from the canonical predicate:

  scripts/check-glossary-refs.cjs   local isWithinRoot deleted outright.
  src/installer-migrations.cts      ensureInsideConfig keeps its throw and its
                                    lexical fullPath; only the decision moves.
  src/planning-inspect.cts          isPathContained keeps must-exist as its own
                                    condition; only the decision moves.

Two of those are wrappers rather than deletions, and each is a wrapper for a
reason that would have been a silent behavior change if collapsed naively:

- `isPathContained` returns FALSE for a path that does not exist, because
  fs.realpathSync throws ENOENT and its catch swallows it. The canonical
  predicate does the opposite: for a missing target it walks up to the nearest
  existing ancestor and ACCEPTS a not-yet-created path under the root. Its
  callers at planning-inspect.cts:747 and :839 guard a phaseDir immediately
  before readdirSync, so under a naive swap a missing phaseDir would stop
  reporting scope UNREADABLE and start throwing ENOENT out of readdirSync.
  Existence is therefore kept as an explicit local requirement.

- `ensureInsideConfig` returns a LEXICAL fullPath that both callers consume for
  existsSync and for journal entries. The canonical predicate realpath-resolves,
  so if configDir is itself a symlink the two differ. The decision is canonical;
  the returned value stays lexical. Its message is likewise preserved verbatim,
  which is why this uses tryWithinRoot plus an explicit throw rather than
  assertWithinRoot.

`isWithinRoot` in planning-inspect is left in place and documented: it is a pure
comparison over paths the CALLER has already resolved, which readDocument does
inline specifically to keep a third degradation shape (exists-but-unreadable vs
absent) that neither isPathContained nor the canonical predicate expresses. It
is the comparison step of one implementation, not a second implementation.

RETAINED, DELIBERATELY — gsd-core/bin/gsd-tools.cjs. My own design document said
"collapse" and that was wrong. The file carries an explicit comment forbidding
it, and the comment is correct: its three checks reject symlinks OUTRIGHT, which
is strictly stricter than the canonical predicate, not a reimplementation of it.
The canonical predicate accepts a link whose target lands inside the root — for
a restore that is still wrong, because writing through the link overwrites
whatever it points at instead of materializing a regular file. Collapsing would
have reintroduced that hole. The comment is updated to name the current exported
predicate, to record that this was reviewed under this phase and deliberately
not collapsed, and to note that isInsideDir treats target === root as NOT
contained — the one implementation in the repo that does.

THE configHome RULING — retained lexical, and a false safety claim corrected.
isPathConfined stays lexical because two of its callers must validate a
destSubpath BEFORE the mkdirSync that creates it (install-engine.cts:1608,
install-profiles.cts:880), where realpath cannot resolve and a realpath-based
predicate would reject every legitimate install.

Its docstring's justification, however, did not survive being checked. It cited
capability-source.cts:491,577,675 as the upstream symlink rejection that made
the lexical form safe. Read directly: :491 is a blank line before assertSafeId's
JSDoc and :577 is an entry-count budget check. Neither is a symlink check. The
real guards are :585-586 and :671-674. Worse than stale line numbers, the claim
that this "keeps every caller of this function's callers symlink-safe" is false:
that rejection lives in capability-source's staging path and covers only the
capability-loader route to assertDescriptorConfined. Three other callers do not
reach it, and only retired-artifact-cleanup.cts:69 carries its own defense
(its lstatSync check at :77). The docstring now states what is actually true and
cites the lines that actually exist.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-12 13:29:54 -04:00
sim
7e7a239a65 refactor(#4653): replace the allowAbsolute flag with a named acceptance policy
Phase 3 of epic #4636, stage 3b. Satisfies #4653's criterion that
`opts.allowAbsolute` become "a named acceptance policy on the predicate, not a
per-call-site boolean".

The flag was actively misleading at the call site. `{ allowAbsolute: true }`
reads as "containment is relaxed here". It never was: an absolute path that
resolves outside the root is rejected exactly as a traversal is. The flag only
ever controlled whether an absolute candidate was CONSIDERED. On a security
predicate that is the wrong thing for a reviewer to have to infer, and 31 call
sites were asking them to infer it.

    PathAcceptance.RelativeOnly         relative candidates only
    PathAcceptance.AbsoluteInsideRoot   absolute accepted, containment unchanged

The three exported wrappers take the policy and translate it inward.
validatePath keeps its internal `{ allowAbsolute }` opts and its body untouched —
the engine is not re-derived here either, only the exported surface is renamed.

MEASURED, NOT ESTIMATED. 31 call sites across 10 files, counted by walking the
AST with the repo's own @typescript-eslint/parser rather than grepping: a text
match would have folded in the options-type declaration, default parameter
values and comments. All 31 pass the literal `true`; none passes `false` or a
dynamic value, so the migration is uniform and `RelativeOnly` is purely the
existing default made nameable. audit.cts alone holds 18 of them.

This migration is compiler-verified in a way the containment-value migration in
the previous commit was not: the parameter type changed from an object to a
string union, so any missed site is a build error rather than a silent
behavioral difference. That is why a 31-site mechanical edit is acceptable in
the phase whose stated risk is the width of mechanical change.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-12 12:31:01 -04:00
sim
26384ca988 refactor(#4653): make validatePath module-internal
Phase 3 of epic #4636, stage 3a. ADR-4650 decision 2: the engine stops being a
public shape. The only exported containment surface is now assertWithinRoot /
tryWithinRoot / requireSafePath, none of which can hand a caller a usable path
when the answer is unsafe.

The src/security.cts diff is one keyword. The engine body is byte-identical —
the dangling-symlink existence-oracle closure, the ancestor canonicalization and
the separator-aware boundary test are untouched, which is the whole constraint
this phase operates under.

WHAT THE TRANSLATION COST, AND THE RULE THAT KEPT IT AT ZERO. Roughly thirty test
call sites consumed validatePath directly, including the two BLOCKER regressions
that are this refactor's safety net. Translating them all to
`tryWithinRoot(...) === null` would have looked correct and silently destroyed
one of them: BLOCKER-1 asserts the rejection reason contains "unresolvable
symbolic link", which is what distinguishes a DANGLING symlink from an ordinary
escape. tryWithinRoot returns a bare null and cannot tell those apart, so that
assertion would have degenerated into "it failed somehow" — and the
existence-oracle closure could regress with the test still green.

So the rule applied throughout is: an assertion on the rejection REASON goes
through assertWithinRoot, whose throw carries the engine's message verbatim; only
assertions on the boolean go through tryWithinRoot. Under that rule no coverage
is lost. BLOCKER-1 still pins "unresolvable symbolic link" and BLOCKER-2 still
pins the exact canonicalized resolved value.

Three success-path tests came out BETTER than they went in. They previously
carried `expected safe:true, got error: ${result.error}` as an assertion message;
routing them through assertWithinRoot means an engine regression now surfaces the
real reason in the failure itself rather than as a hand-built string.

The two describe blocks named after validatePath are renamed — a block named for
a symbol the module no longer exports is a false signpost.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-12 12:22:22 -04:00
sim
4ebcec7750 refactor(#4653): narrow the containment export and migrate all 15 validatePath sites
Phase 3 of epic #4636, stages 1-2. Implements ADR-4650 decisions 1 and 2: one
containment predicate, and an exported shape that cannot hand a caller a usable
path when the answer is unsafe.

THE EXPORT IS NOW A PAIR, BOTH RETURNING A BRANDED TYPE:

  assertWithinRoot(candidate, root, label?, opts?) -> ContainedPath   (throws)
  tryWithinRoot(candidate, root, opts?)            -> ContainedPath | null

ADR-4650 names only the throwing form. That does not survive contact with the
call sites: findPhaseArtifact probes a direct path, then a .planning/ path, then
each readdir entry, and throwing on the first miss breaks it outright. Six of the
fifteen sites need a non-throwing check. Recorded here rather than papered over.

WHY BRANDED. validatePath returns { safe, resolved, error } and populates
resolved with the ESCAPING path on the traversal branch — so a caller who skips
the boolean gets an attacker-controlled value precisely in the dangerous case.
tryWithinRoot returns exactly null there; assertWithinRoot throws. A plain string
is not assignable to ContainedPath, so a migrated site that validates one path
and then passes a different one is now a type error rather than a silent bug.
That is the defect this epic exists to close, and I introduced it twice in
Phase 2.

THE ENGINE IS UNTOUCHED. validatePath's body is not re-derived — the diff shows
zero edits to the dangling-symlink existence-oracle closure, the ancestor
canonicalization (macOS /var vs /private/var), or the separator-aware boundary
test. Each was acquired as a bug fix and a re-derivation would silently lose one.
requireSafePath now delegates to assertWithinRoot, so there is one implementation
beneath both names; its return type is branded, which is why its 13 call sites
compile unchanged.

A TYPESCRIPT LIMITATION, FIXED AT THE ROOT RATHER THAN WORKED AROUND. TS applies
never-return control-flow narrowing only when the callee is a function
declaration or a const with an EXPLICIT type annotation. Both routers do
`const { error } = io` — destructured, unannotated — so `error(...)` did not
narrow ContainedPath | null and four sites wanted a dead
`throw new Error('unreachable')` after it. Annotating the const
(`const error: typeof io.error = io.error`) makes TS narrow properly and the dead
throws are gone.

That annotation has a large, deliberate consequence: with narrowing working,
`@typescript-eslint/no-unnecessary-type-assertion` fires at 37 sites in
commands.cts where `as string` / `!` existed ONLY to paper over the missing
narrowing. They are removed. The rule is type-aware and fires only where the
assertion changes nothing, and both forms erase at compile time, so the emitted
behavior is unchanged — but the module loses 37 unchecked casts over
string | undefined, which is the same class of "trust me" the containment work
is removing. Widening the diff here buys that.

TWO SITES LOSE DIAGNOSTIC TEXT, deliberately. tryWithinRoot has no error channel,
so init.cts's agent-skills warning and cmdPrSubrepo's rejection now name the
condition rather than echoing validatePath's message. verify.cts had already
stopped echoing it on purpose — the message embeds absolute host paths — so this
makes the three agree instead of two-of-three.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-12 12:16:24 -04:00
sim
889c7efba0 test(#4653): failing-first coverage for the narrowed containment export
Phase 3 of epic #4636. Tests only; no implementation. These MUST fail.

A refactor changes what a good test looks like: the behavior under test must be
IDENTICAL before and after, so most of this phase's safety comes from
invariance rather than new assertions. That safety net already exists and is
untouched here — tests/security.test.cjs already pins the two engine behaviors
a re-derivation would silently lose:

  :177  a DANGLING symlink to a non-existent OUTSIDE target stays safe:false
        (the existence-oracle closure)
  :213  a not-yet-created file in a not-yet-created subdir under a
        non-canonical base stays safe:true (ancestor canonicalization)

plus traversal, absolute in/out, null bytes, empty, non-string, and
requireSafePath's throw. Those 0 deletions are the point: if any of them had to
change, the engine would have changed, and the engine is not supposed to.

What is new is the export surface Phase 3 introduces:

  assertWithinRoot(candidate, root, label?, opts?) -> ContainedPath  (throws)
  tryWithinRoot(candidate, root, opts?)            -> ContainedPath | null

Two shapes rather than one, because several call sites need a NON-throwing
check — findPhaseArtifact probes a direct path, then a .planning/ path, then
each readdir entry, and throwing on the first miss would break it outright.
ADR-4650 names only the throwing form; this is the gap between the ADR and the
call sites, recorded rather than papered over.

Rows that exist because they are the ones nobody enumerates:

- tryWithinRoot must return EXACTLY null on escape, and its return must not
  contain the escaping path's basename. The shape being replaced populates its
  "resolved" field with the escaping path precisely on the traversal branch, so
  a caller who ignores the boolean gets a usable attacker-controlled value.
  That is the defect the narrowing exists to remove, so it is asserted
  directly.
- A seeded parity property: tryWithinRoot returns non-null if and only if
  assertWithinRoot does not throw, and the values agree. Two exported shapes
  over one engine is a divergence pair by construction.
- The rejection text still contains the phrase "escapes allowed directory".
  Another suite surfaces it through a user-facing "reason" field, and a
  refactor is exactly where wording drifts unnoticed.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-12 11:54:49 -04:00
Tom Boucher
a0270a7945 Merge pull request #4666 from open-gsd/fix/4652-containment-at-boundaries 2026-09-12 11:44:24 -04:00
Rezolv
7bcfbe4542 docs(#4629): add ADR-4629 — STATE.md write intent beyond frontmatter (#4645) 2026-09-12 11:43:16 -04:00
sim
e1f169a378 chore(#4652): backfill changeset PR number to 4666
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-12 10:41:11 -04:00
sim
f64f8a0e7b test(#4652): correct the absolute-filename test to match the basename guard
The test asserted that an absolute filename is folded under the pending dir
and fails as "not found" rather than being rejected. That held for exactly
one commit. The basename guard rejects any name containing a separator before
any join happens, so an absolute path never reaches containment or the
filesystem at all.

Now asserts the USAGE rejection the CLI actually emits, verified by running it.
All four outside-file protections are kept unchanged — the file still exists,
its content is byte-identical, it never lands in completed/, and cleanup runs
in finally. Those are the assertions that carry the security value; only the
claim about HOW the rejection happens was stale.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-12 10:24:48 -04:00
sim
c7956c162b fix(#4652): a todo name must be a basename — containment alone cannot say that
The verification checkpoint caught a real design gap, not a flaky test.

Confining sourcePath/targetPath within todosRoot correctly rejects
`../../escaped`, which leaves the root. It does NOT reject these, because they
all land inside it:

  ../sibling.md   -> <todosRoot>/sibling.md     escapes pending/, not the root
  a/../../b.md    -> <todosRoot>/b.md           same
  sub/name.md     -> <pendingDir>/sub/name.md   inside pending/, but nested

Three committed tests asserted these must be rejected and were right: the
design says "a todo name is a basename, not a path", and #4327 requires the
resolved path stay inside "the todos root (pending and completed subdirs)".
Containment against a root is structurally incapable of expressing "basename" —
it answers "is this inside?", and all three are. The wrong tool was reaching
for the wrong question.

A basename guard now runs BEFORE any path is joined: reject on a `/` or `\`
separator, on a path.basename / path.win32.basename mismatch, on `.` / `..`,
and on a NUL byte. Both separators are checked explicitly because on POSIX a
literal backslash is an ordinary filename character to path.basename but not to
path.win32.basename or to the user's intent — this repo has a documented bug
class for exactly that asymmetry. Same predicate shape as findPhaseArtifact in
check-command-router.cts, so the two agree.

Containment is kept as defense-in-depth rather than replaced. The basename
guard is the specific rule; containment is the backstop.

Message wording matters here and is deliberate: `sub/name.md` does NOT escape
its allowed directory, so reusing the escape message would have stated
something false. It now says the name must be a plain filename, not a path.

docs/CLI-TOOLS.md corrected again, in the opposite direction from last time.
The previous revision said an absolute filename is "folded under the root" and
404s — true then, false now: the basename guard rejects it before any join
happens. Two corrections to one paragraph in one phase is the cost of
documenting behavior while it is still moving; the paragraph now matches the
shipped code.

Verified through the real CLI, not by calling the built function directly:
all eight rejection cases produce the new USAGE message; `ok.md` still
completes and moves to completed/; `missing.md` still gives "Todo not found".

Also corrected the now-stale comment above the isFile() check — it described
`.`/`..` reaching that line, which the basename guard now prevents. The check
itself stays: a bare basename can still name a directory, FIFO or socket in
pending/.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-12 10:07:40 -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
sim
374300da17 fix(#4652): confine every boundary that joins argv to a managed root
Phase 2 of epic #4636, absorbing #4327 and #4354. Implements ADR-4650
decision 3: containment is a boundary concern — the predicate runs where
external input enters, not at whichever interior call site remembered.

Four boundaries now validate against their managed root and reject with a
USAGE-shaped error before touching the filesystem:

  todo complete <name>                 -> todosDir(cwd)
  check predicate --phase-dir <dir>    -> projectDir
  check decision-coverage-plan <dir>   -> projectDir   (via resolvePath)
  check gap-analysis.plan-post <dir>   -> projectDir

#4327 understated its own severity. It reports that a traversal name
"resolves outside the todos root", which reads as an information leak.
Measured, it was destructive: the command exited 0, MOVED the outside file
into completed/, and unlinked the original. cmdTodoComplete ends in
fs.unlinkSync(sourcePath), so an unconfined name consumed across the
boundary rather than merely reading across it. Validation now precedes every
fs call — existsSync, readFileSync, ensureDir, writeSync, unlinkSync — and
both halves of the move are confined, so neither source nor destination can
land outside the root. --dry-run is rejected on the same terms; a preview
must not leak a resolved outside path either.

#4354 reproduces exactly: a BLOCKING gate returned block:false sourced
entirely from a SECURITY.md in a caller-chosen directory outside the project.

THE HARDER HALF, found by the isolated adversarial review of the first
attempt: validating a path and then using a DIFFERENT one closes nothing.
The first fix validated `--phase-dir` joined against `--cwd`, then passed the
RAW unjoined value into the predicate context. gate-predicate-evaluator uses
it as-is and findPhaseArtifact resolves a relative path against the REAL
process cwd — so validation and the read used two different roots whenever
process.cwd() differed from --cwd. Reproduced: running from a directory
holding a plan with `secret_field: LEAKED_VALUE`, a predicate declared
against an empty --cwd project exited 0 and returned "actual":"LEAKED_VALUE".

The rule now applied at all three router sites: **use the validated resolved
path, never the raw input.** Independently re-verified after the fix — the
lookup resolves in the --cwd project and no value leaks.

gate-predicate-evaluator.cts is untouched and still imports no fs. Confining
in the router is what keeps that pure-leaf contract intact AND covers
${PHASE_DIR} interpolation into command-exit-zero, which an evaluator-local
fix would have missed entirely.

Also fixed, same review: `todo complete .` and `..` passed containment
(they resolve to the pending dir, which IS inside the root) and then threw an
uncaught EISDIR with an absolute-path stack trace. Now a clean USAGE
rejection naming the real reason — "todo name is not a file" — rather than
borrowing the escape message, which would have stated something false.

Ripples discharged BEFORE the verification checkpoint rather than after, per
the Phase 1 retrospective: docs/reference/gate-predicates.md and
docs/CLI-TOOLS.md document the new constraints, CONTEXT.md records why
containment lives at the router rather than the evaluator, the changeset is
written, and the install-tree goldens were regenerated to confirm unchanged
(no new shipped file) rather than assumed.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-12 09:43:50 -04:00
sim
3925839f2a test(#4652): failing-first coverage for the four unconfined boundaries
Phase 2 of epic #4636, absorbing #4327 and #4354. Tests only; no fix. These
MUST fail.

Four CLI boundaries join externally-supplied input to a managed root with no
containment validation. Each was driven through the real CLI and confirmed
unconfined before the assertions were written:

  todo complete <name>                     src/commands.cts cmdTodoComplete
  check predicate --phase-dir <dir>        check-command-router cmdCheckPredicate
  check decision-coverage-plan <dir>       check-command-router resolvePath
  check gap-analysis.plan-post <dir>       check-command-router

Boundary 1 is worse than the issue describes. #4327 reports that a traversal
name "resolves outside the todos root", which reads as an information leak.
Measured, it is destructive: `todo complete ../../../../b1out/leak.md` exited
0, MOVED the outside file into completed/, and unlinked the original. The file
was gone. cmdTodoComplete ends in fs.unlinkSync(sourcePath), so an unconfined
name does not merely read across the boundary, it consumes across it.

Boundary 2 reproduces #4354 exactly: a BLOCKING gate returned
{"block":false,"details":{"match":true}} sourced entirely from a SECURITY.md
in a directory the caller chose, outside the project.

Boundaries 3 and 4 are not named in the epic. Both accepted an outside phase
dir and exited 0.

Rows that exist because they are the ones nobody enumerates:

- ORDERING. A real file is created outside the todos root, then the traversal
  name targeting it is asserted rejected AND the outside file asserted still
  present and unmoved. #4327 notes the existence check and the move target
  BOTH follow the unvalidated join, so a rejection that lands after the read
  has already leaked — and, per the finding above, after the unlink has
  already destroyed.
- `a/../../b.md` — looks balanced, resolves outside.
- --dry-run must reject too; a preview must not leak a resolved outside path.
- ${PHASE_DIR} interpolation into a command-exit-zero predicate is the SECOND
  predicate kind, which a fix inside gate-predicate-evaluator.cts would miss.
- An absolute path INSIDE the project must still be accepted at every
  boundary — absolute is not a synonym for escaping.

Cross-boundary rows loop over one shared list of escaping inputs and assert
all four reject with the same shape, so four sites adopting one predicate
cannot drift into four rejection contracts.

Property tests cover BOTH directions — outside is always rejected, inside is
always accepted. A property asserting only rejection is satisfied by a
predicate that rejects everything, which is the degenerate-implementation trap
found in Phase 1's review. Both are seeded.

Regressions fold into the owning module suites rather than a new
tests/fix-NNNN-*.test.cjs, per scripts/lint-regression-test-names.cjs.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-12 09:43:50 -04:00
Tom Boucher
c99d7bb2be test(#4522): migrate core CLI/domain state batch to named timeout constants (#4662)
Batch 11 of the ad hoc timeout literal migration (epic #4445). Replaces
every bare numeric timeout/timeoutMs object-literal property in
tests/state-document.test.cjs, tests/phase.test.cjs, tests/commands.test.cjs,
tests/pattern.test.cjs, tests/adr-612-bracket-coherence.test.cjs,
tests/adr-612-bracket-read-tolerance.test.cjs, tests/milestone-lock.test.cjs,
tests/init.test.cjs, tests/state-todos-render.test.cjs,
tests/quick-batch.test.cjs, tests/graphify.test.cjs, and
tests/effort-surface-axis.test.cjs with a named constant, per
eslint-rules/no-adhoc-timeout-literal.cjs. Removes these 12 files from the
rule's allowlist.

Ground truth via eslint found 25 sites, not the issue's stated 24 (phase.test.cjs
has 5, not 4) -- disclosed in the PR body.

Reuses PROBE_TIMEOUT_MS, GIT_TIMEOUT_MS, and LOOP_HOOK_POINT_CLI_TIMEOUT_MS
across 8 files. Adds two new shared constants to tests/helpers/timeouts.cjs
(each independently arrived at by 2 files in this batch, crossing the
promotion bar): PATHOLOGICAL_INPUT_TEST_TIMEOUT_MS (node:test's own per-test
timeout option, not a subprocess bound) and GSD_TOOLS_CLI_MODERATE_TIMEOUT_MS
(a single gsd-tools.cjs CLI subcommand spawn, distinct tier from
PROBE_TIMEOUT_MS/LOOP_HOOK_POINT_CLI_TIMEOUT_MS). Adds 3 file-local constants
for values used by only 1 file in this batch. No src/bin file touched, no
numeric value changed anywhere.

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-12 09:12:31 -04:00
Tom Boucher
241646a43a fix(#4651): classify .env names by final extension, and close the trailing-dot alias bypass — Phase 1 of #4636 (#4659)
* test(#4651): failing-first coverage for final-extension classification

Phase 1 of epic #4636, absorbing #4580. Tests only; no fix. These MUST fail.

The guard classifies a name by comparing everything after `.env.` as one
token against a set whose members are FINAL EXTENSIONS. So `.env.local.example`
yields suffix `local.example`, which is not a member, and a committed
secret-free template is refused. That is a category error, not strictness.

Two arms are covered because the same classification is hand-rolled twice in
one file: `isSecretBasename` for Read/Bash, and `globAltSelectsSecret`
(`lit.startsWith('.env.')`) for Grep globs. Fixing one alone would ship a
guard that allows `cat .env.local.example` while refusing
`Grep --glob '.env.local.example'` — the same file, the same hook, opposite
answers. A cross-arm parity loop over one shared list asserts the two cannot
drift.

Rows that exist because they are the ones nobody enumerates:

- `.env.example.local` must stay BLOCKED. Final extension is `local`; this is
  dotenv's documented local-override convention and a real secret. Any fix
  shaped as "contains example" admits it.
- `.env.local.` must stay BLOCKED — empty final extension is not a member.
- `.env.` must stay ALLOWED. Note #4580's proposed patch adds
  `if (suffix === '') return true;`, which flips it to blocked; that breaks the
  existing `allows` assertion in this suite and broadens the protected set,
  which epic #4636's non-goals forbid. Not applied.
- `.env.local.exam*` (partial glob literal) must stay BLOCKED — it can select
  `.env.local`, and a partial literal cannot be classified.
- `*.example` and `*` must stay ALLOWED — regression protection on the arm
  that already works.

Local behavioral repro of the current guard, confirming the tests fail for the
right reason rather than by construction:

  .env.local.example  rc=2 (blocked)   <- the defect
  .env.example        rc=0 (allowed)
  .env.local          rc=2 (blocked)
  .env.example.local  rc=2 (blocked)
  .env.               rc=0 (allowed)
  glob .env.local.example  rc=2        <- the second arm

Regressions are folded into the owning module's suite rather than a new
tests/fix-NNNN-*.test.cjs file, per scripts/lint-regression-test-names.cjs.

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

* fix(#4651): classify by final extension so .env.<name>.example is readable

Phase 1 of epic #4636, absorbing #4580. Implements ADR-4650 decision 5.

The guard compared everything after `.env.` as ONE token against a set whose
members are FINAL EXTENSIONS. `.env.local.example` yielded `local.example`,
which is not a member, so a committed, secret-free template was refused — the
guard blocked the one file that exists so nobody has to open the real `.env`.

That is a category error, not strictness. The fix is not "add local.example to
the set"; it is to compare the right token. hooks/lib/filename-classification.js
now owns that distinction and is the only place it is expressed.

Both arms are fixed, because the same classification was hand-rolled twice in
this one file:

  - isSecretBasename (Read/Bash) now tests finalExtension(suffix).
  - globAltSelectsSecret (Grep --glob) split its first branch. With no
    wildcard the alternative IS a whole filename, so it is classified exactly
    via isSecretBasename. With a wildcard present the literal is only a
    PARTIAL prefix (`.env.local.exam*` can still select `.env.local`) and
    cannot be classified, so the original conservative rule stays.

Fixing only the first would have shipped a self-contradicting guard: `cat
.env.local.example` allowed while `Grep --glob '.env.local.example'` refused —
same file, same hook, opposite answers. A cross-arm parity loop over one shared
list now asserts the two cannot drift.

Two deliberate departures from #4580's suggested patch, both verified:

  - Its `if (suffix === '') return true;` is NOT applied. That flips `.env.`
    from allowed to blocked, breaking an existing assertion in this suite and
    broadening the protected set, which epic #4636's non-goals forbid.
  - `fullSuffix` was drafted alongside finalExtension and removed before
    commit: zero production consumers, and none planned (Phases 2-4 are
    containment, duplicate draining and the path-join ratchet, none of which
    classify filenames). A zero-caller export is dead code. The distinction is
    pinned instead by a test asserting finalExtension('local.example') is
    'example' and explicitly NOT 'local.example'.

The protected set is unchanged. `.env.example.local` stays BLOCKED — its final
extension is `local`, dotenv's local-override convention and a real secret;
any fix shaped as "contains example" admits it.

Scoped out by measurement, not assumption: src/validate.cts:395 and
src/phase.cts:1674 also hand-roll lastIndexOf('.'), but both parse phase
identifiers (`3.2` -> parent `3`), owned by the phase-id.cts seam. Folding
them in would repeat this same category error in the opposite direction.

Checkpoint 1 (prove RED) on the tests-only commit 91d3d6e1: outcome=failed,
26 failures / 45330, all 26 in the two new test files, zero pre-existing.

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

* fix(#4651): document the widened template exemption and cover the Bash arm

Two findings from the isolated adversarial review, both fixed in place.

1. The header's "Stated cost" passage named only the four literal template
   names, but since this change the exemption keys on the FINAL EXTENSION, so
   the trusted set is `.env.<anything>.{example,sample,template,dist}` — an
   unbounded family. The reviewer demonstrated it: `.env.prod-real-secrets.example`
   is allowed. That is the deliberate and necessary cost of fixing #4580, but
   it was materially larger than what the header disclosed, and a silent
   expansion of a security guard's trusted set is not acceptable. The passage
   now states the family, the concrete bypass, and that it applies across
   Read, Grep and Bash alike.

2. The cross-arm parity loop asserted Read and the exact-literal Grep glob but
   not Bash, whose `namesSecret` -> `isSecretBasename` path is genuinely
   distinct. The Bash arm was covered only by two one-off tests outside the
   shared table, so the table could not have caught a drift there. The loop now
   drives all three arms from the same TEMPLATES/SECRETS arrays.

No classification logic changed. The Read-arm behavioral table is byte-identical
before and after: rc=0 for .env.local.example / .env.example / .env. ; rc=2 for
.env.local / .env.example.local / .env / .secrets.

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

* fix(#4651): treat trailing dots and spaces as aliases of the protected file

Closes a Windows path-alias bypass surfaced by the isolated adversarial review
of this phase. Maintainer-approved as in scope.

Win32 strips trailing dots and spaces from every path component, so `.env.`,
`.env..`, `.env `, `.env. `, `.env .`, `.secrets.` and `.secrets ` all resolve
to the real `.env` / `.secrets` on Windows. The guard allowed every one of them
— a bypass of a file it already protects, reachable from Read, Grep and Bash
alike. `isSecretBasename` now normalizes the basename before classifying.

The whole class is fixed, not the reported name. `.env.` alone would have left
`.secrets.` and the trailing-space forms open, which is the same
one-cause-explains-every-failure trap this epic exists to close.

Two consequences, both measured rather than assumed:

  - `.env.example.` flips blocked -> ALLOWED. It aliases the already-trusted
    `.env.example` template, so this is correct; it was previously blocked only
    because the trailing dot broke final-extension parsing.
  - A Bash token that is exactly `.env` plus trailing whitespace flips
    allowed -> BLOCKED. Verified this is CONSISTENCY, not a new false-positive
    class: the bare `.env` token was ALREADY blocked as an operand in the same
    position before this change, so the alias now simply behaves like the thing
    it aliases.

The header's "No whitespace trimming" guarantee is preserved and now stated
precisely: leading and interior whitespace is still never trimmed, so prose
like a commit message mentioning `.env` in a sentence stays prose and stays
allowed. Only TRAILING dots and spaces are stripped. Two tests pin that.

This lands at the same behavior #4580's proposed `if (suffix === '') return
true;` would have produced for `.env.`, which this phase earlier rejected. The
rejection was correct on its stated grounds — that line broadens the protected
set, which epic #4636's non-goals forbid. The Windows framing is different:
normalizing an alias of an already-protected file is not a broadening, and the
fix is reached by normalization rather than by special-casing an empty suffix,
so it generalizes to `.secrets.` and the space forms.

Cannot be reproduced on this host — the remote matrix is Linux-only and Windows
coverage arrives from CI — so this ships on the Win32 path-normalization
contract plus the CI lane, and that limitation is stated rather than implied.

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

* fix(#4651): one owner for path segmentation, closing a Read/Grep divergence

Four findings from the two-axis review, all fixed in place.

The real one: the guard had TWO path-segmentation rules. `lastSegment` (used
by Read and Bash via `namesSecret`) splits on both `/` and `\`, while
`classifyGrepGlob` hand-rolled its own on `/` only. Measured:

  Read  of `config\.env`      rc=2  BLOCKED
  Grep  --glob 'config\.env'  rc=0  ALLOWED

Same logical file, opposite answers — precisely the divergence this epic
exists to remove, sitting inside the file this phase was already fixing.
`lastSegment` now lives in hooks/lib/filename-classification.js and both arms
call it. All five path-bearing cases (both separators) now agree.

Note on how this was nearly missed: the first measurement of it reported
"both allow", which looked like the reviewer was wrong. That reading was a
measurement artifact — `config\.env` inside a printf'd JSON payload is an
invalid escape, so the hook fails open at rc=0 and the test was observing
JSON breakage rather than the predicate. Re-measured with correct escaping,
the divergence is real. The tests added here use properly escaped literals
and were verified by running, not by reasoning about the escaping.

Also fixed:

  - Both fast-check properties were satisfied by a degenerate
    always-return-'' implementation: "never contains a dot / is a suffix" and
    "never ends with dot-or-space / is a prefix" are both trivially true of
    the empty string. They now additionally pin content preservation — the
    removed tail must match /^[. ]*$/, and a name with nothing to strip must
    come back unchanged.
  - The cross-arm parity loop used only bare basenames, so it could not have
    caught the divergence above. It now covers path-bearing names with both
    separators.
  - That loop's description overclaimed: Read and Bash BOTH route through
    `namesSecret`, so they are not independent paths; only the Grep glob arm
    is genuinely separate. The description now says so rather than implying
    three-way independence.
  - `normalizeWindowsBasename` runs on every platform, not only Windows. Its
    doc now states that explicitly: the guard must answer identically
    everywhere, and a name is judged by what Win32 would resolve it to.

No classification logic changed; the 12-name regression sweep is unchanged.

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

* chore(#4651): regenerate install-tree goldens, correct the guard's user-facing docs

Three things, all consequences of the fix rather than new behavior.

1. Install-tree goldens. `hooks/lib/filename-classification.js` is a SHIPPED
   file — package.json `files` includes `hooks` — so every per-runtime install
   tree gains a path. Checkpoint 2 failed on exactly this: 11 failures, all in
   tests/golden-install-tree.test.cjs, against 45356 passing. Regenerated via
   scripts/gen-install-tree-fixtures.cjs; 11 goldens changed, matching the 11
   failures one-for-one.

   This ripple was identified at design time and then not acted on. Fleet's
   impact preview named golden-install-tree.test.cjs before any code was
   written, and 40-design.md records it under "Ripples identified". Writing a
   risk down is not the same as discharging it, and a full matrix run was spent
   discovering something already known.

2. docs/USER-GUIDE.md made a precise and now-false claim about the guard's
   protected set: it named `.env.example` / `.sample` / `.template` / `.dist`
   as the four exempt names. The exemption keys on the FINAL EXTENSION, so the
   exempt set is the unbounded family `.env.<anything>.{example,sample,template,dist}`.
   The page now states that family, the widened residual, that order matters
   and only the last segment counts (`.env.example.local` is a secret), and
   that trailing dots and spaces are stripped because Windows resolves them to
   the protected file. A wrong user-facing model of what a security guard
   protects is worth correcting even though Fixed/Security changesets are
   exempt from the required-docs rule.

   docs/ARCHITECTURE.md and docs/INVENTORY.md say "templates such as
   `.env.example` exempt" — non-exhaustive, still true, deliberately left
   alone. Same for the ja-JP / zh-CN / ko-KR / pt-BR rows, which carry the same
   hedged phrasing; hand-translating a security description unreviewed is not
   something to do silently.

3. Two changeset fragments, not one. A refusal corrected is `Fixed`; a bypass
   closed is `Security`. Folding the second into the first would under-report
   it in the release notes. Both carry `pr: 0` for backfill once the PR exists.

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

* chore(#4651): backfill changeset PR number to 4659

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

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-09-12 08:42:43 -04:00
Tom Boucher
8fa2c3dbcf docs(#4650): record the path-containment and filename-classification design lock (#4655)
Phase 0 of epic #4636. ADR-4650 fixes the decisions Phases 1-4 inherit, so that
four phases do not each invent them independently.

The load-bearing decision is that the engine and the exported shape are
separable. A resolver-based, symlink-safe containment predicate already exists
as validatePath, and building the epic's literal assertWithinRoot() from scratch
would create a sixth implementation of the very thing this epic consolidates --
while risking silent loss of behavior validatePath acquired as bug fixes (a
closed dangling-symlink existence oracle, ancestor canonicalization for
non-canonical roots, a separator-aware boundary test).

But the epic's other clause is correct and lands on the current export:
validatePath returns a boolean a caller can forget to check, and populates
`resolved` with the escaping path precisely on the traversal branch. While that
form stays exported, the Phase-4 ratchet could only assert that a helper was
called -- validatePath(x, root).resolved would pass the rule.

So: preserve the engine, narrow the export. assertWithinRoot becomes the only
export and yields a branded ContainedPath.

Also recorded, each found by measurement rather than from the epic text:

- The rejection message text is a real contract. tests/quick-batch.test.cjs
  asserts a user-facing `reason` field matches /escapes allowed directory/, so
  the string reaches CLI consumers and Phase 3 must preserve it verbatim.
- Two further unconfined boundaries the epic does not enumerate: resolvePath
  and gap-analysis.plan-post, both in check-command-router.cts.
- --phase-dir also interpolates into ${PHASE_DIR} for command-exit-zero, so
  confining at the boundary covers both predicate kinds; the evaluator stays
  fs-free.
- opts.allowAbsolute is a per-call-site liberality knob, which is an acceptance
  policy living exactly where this ADR says it must not.
- planning-inspect's isWithinRoot is deliberately pure-string with no I/O; its
  contract differs, so Phase 3 decides rather than assumes.

The acceptance policy is stated once: conservative about the resource, exact
about the classification. #4580's guard was not too strict, it was wrong -- a
category error comparing a whole suffix against a set of final extensions.

ADR opens as Proposed; ratified at Phase 4 closeout per docs/adr/README.md.
No changeset: the diff touches docs/adr/ only, which is outside
USER_FACING_PREFIXES in scripts/changeset/lint.cjs.

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-09-11 23:45:04 -04:00
Tom Boucher
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
5e0a7b1b56 fix(#4433,#4569,#4126): consolidate the phase-identity seam at name-validity, allocation, and branch-slug (#4640)
* fix(#4433): apply the name-validity guard symmetrically to every milestone-name capture

extractMilestoneHeadingName already refused a punctuation-only captured name
(#4134), but its two sibling capture sites in getMilestoneInfo — the
STATE.md-anchored 🚧-bullet match and the no-STATE.md in-progress 🚧-bullet
fallback — skipped straight to a bare truthiness check, so a malformed bullet
whose only content past the version was punctuation passed through as a real
milestone name.

Extracts the existing inline /[\p{L}\p{N}]/u check into a single shared
hasNameableContent predicate and applies it at all three capture sites, so
the guard is one owner rather than a copy that happened to land at only one
of them.

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

* test(#4433): pin the name-validity guard at all three milestone-name capture sites

Failing-first coverage for the hasNameableContent extraction: a
punctuation-only 🚧-bullet name must not surface as a real milestone name,
either on the STATE.md-anchored path or the no-STATE.md in-progress
fallback, while a real name (including a digits-only one) still resolves
COMPLETE exactly as before.

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

* fix(#4569): consolidate decimal-phase-number allocation into one function

cmdPhaseInsert allocated its next decimal sub-phase number by scanning only
on-disk phases/ directories and ### Phase N.M: headings, never the roadmap
summary checklist — so a decimal that existed only as a checklist bullet
(no heading yet, no on-disk directory yet) was invisible, and phase insert
could silently reallocate an already-used number. It also always nested one
level deeper under afterPhase, with no way to request a sibling.

cmdPhaseNextDecimal had its own separate, near-identical two-source scan
(missing the checklist source too) — the exact "duplicate implementations
kept in sync instead of deleted" pattern this issue exists to close.

Extracts scanExistingDecimalPhaseNumbers (directories + headings + checklist
bullets, in one place) and migrates both cmdPhaseInsert and
cmdPhaseNextDecimal onto it — deleting cmdPhaseNextDecimal's own copy rather
than patching it in parallel. Adds an allocation: 'nested' | 'sibling'
argument to cmdPhaseInsert (default 'nested', matching every existing
caller's behavior); a top-level phase with no existing decimal segment falls
back to nested since there is no sibling level to join. No CLI flag wires
'sibling' yet — that is a separate, disclosed follow-up.

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

* test(#4569): pin decimal-allocation coverage across phase insert and next-decimal

Failing-first coverage for scanExistingDecimalPhaseNumbers: a checklist-only
decimal must not be reallocated by phase insert; a decimal present in
heading, checklist, and on-disk directory simultaneously must count once;
an unrelated phase family's checklist bullet must not cross-pollute; and
phase next-decimal (migrated onto the same shared helper) must see a
checklist-only decimal too, closing the same gap in a second command.

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

* chore(#4634): extend the phase-id drift guard for name-validity and shell arithmetic

The epic's ratchet requirement: lint-phase-id-drift.cjs must cover the two
new predicates this PR introduces, and must also scan shell inside
gsd-core/workflows/**/*.md and gsd-core/references/**/*.md for
integer-coercing phase-number arithmetic ($((10#...)) and friends), which
neither the canonical TypeScript module nor a source-only lint can reach.

Adds findNameValidityDrift (bans re-deriving /[\p{L}\p{N}]/u outside
hasNameableContent's owner file) and findShellPhaseArithDrift +
scanMarkdownShellArith (bans $((10#...)) in workflow/reference markdown,
sanctioned via <!-- phase-id-owner: --> on the preceding line). scanRepo
keeps its existing, narrower contract (src/**/*.cts only) so the
already-passing "the live repo is clean" test is untouched; a new scanAll
merges both for the CLI's full report.

Running the guard directly against this tree correctly reports the 7
pre-existing #4619 shell sites (workflows/execute-phase.md x4,
workflows/execute-phase/steps/completion-reconciliation.md x2,
references/tdd.md x1) as violations — demonstrating the ratchet works, not
fixing them. #4619 is a live regression tracked and fixed separately; this
PR does not touch those markdown files. A characterization test pins the
current count of 7 so a future change to that number is investigated rather
than silently absorbed.

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

* fix(#4569): wire --sibling through phase insert's CLI so the argument is reachable

cmdPhaseInsert's allocation parameter had no CLI path to 'sibling' — shipped,
untested, unreachable code (code-review finding: a guaranteed surviving
mutant). Adds --sibling to phase insert's argument parsing, threads it
through, and documents the flag in docs/CLI-TOOLS.md.

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

* test(#4569): exercise --sibling end-to-end through the real CLI

Confirms --sibling joins afterPhase's parent decimal level rather than
nesting, and falls back to nested when afterPhase has no existing decimal
segment (no sibling level to join).

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

* test(#4634): demonstrate the two new drift detectors end-to-end via a planted violation

The epic asks for the guard to be "demonstrated by watching it go red" on a
reintroduced copy. The two new detectors (name-validity, shell-arith) had
only unit-level fixture tests; mirrors the existing bracket-rule's
planted-violation-in-a-temp-tree test for both, proving they're actually
wired into scanRepo/scanMarkdownShellArith end-to-end, not just correct in
isolation.

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

* chore(#4634): consolidate the drift guard's own owner-sanction-check logic

Standards review flagged the "walk to nearest preceding non-blank line,
check for a phase-id-owner comment" logic as duplicated across all four
detector functions in a PR whose whole point is eliminating exactly that
pattern. Extracts isSanctionedByPrecedingComment, shared by all four;
behavior-preserving (verified: identical output before/after, same 7 known
#4619 violations, zero token/bracket/name-validity).

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

* chore(#4634): add Fixed changeset for the name-validity guard and allocation consolidation

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

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

* fix(#4126): consolidate branch-name slug substitution into one shared renderer

cmdCommit (commands.cts) and cmdInitExecutePhase (init.cts) each
independently implemented branch-name template substitution, and both
substituted the literal string 'phase' when phase_slug was empty or
undeliverable — producing a non-identifying branch name (gsd/phase-08-phase)
that contradicted the honestly-reported phase_slug: null in the same
payload. Same structural defect as the other three gaps in this epic: two
consumers reimplementing one concept independently instead of sharing an
owner.

Adds renderPhaseBranchName (src/phase-id.cts) as the sole owner: a real slug
substitutes normally; an empty/undeliverable one drops the {slug} token plus
one adjacent separator (collapsing/trimming the result) rather than
substituting a placeholder word, for the shipped default template and any
user-configured shape alike. Both call sites now delegate to it; the old
inline duplicates are deleted, not kept in sync. {project} substitution
stays a separate step in init.cts, unchanged, since it is a config-level
field with its own fallback contract.

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

* test(#4126): pin renderPhaseBranchName and both migrated call sites

Property-based coverage for the shared renderer's degrade-path invariant
(output, when non-null, never contains {slug} and never starts/ends with a
separator), plus example coverage for real-slug substitution, empty/null/
non-string slug, token position at either edge, a doubled-separator
template, and the only-{slug} -> null case. One regression test each in
commands.test.cjs and init.test.cjs confirms a phase with no derivable slug
no longer produces a branch name ending in the literal '-phase'.

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

* fix: route scanExistingDecimalPhaseNumbers through the canonical enumeration owner

Caught by an actual gsd-test run, not a hypothesis: the new decimal-scan
helper (fix(#4569)) enumerated phases/ directories via a raw
fs.readdirSync, which the pre-existing phase-enumeration drift guard
(#3185/#3882) correctly flags as an unsanctioned re-derivation outside its
canonical owner (listAllPhaseDirs / isSentinelPhaseId). Ironic given this
epic's own thesis, and exactly why the guard exists: consolidating one seam
can reintroduce drift in an adjacent one if the new code doesn't route
through what's already there. Migrates the enumeration to listAllPhaseDirs;
identical decimal-detection output for every existing case.

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

* chore(#4634): extend the drift guard for branch-slug fallback; fix a real regex bug

Adds the fourth detector the epic's ratchet section names ("both
branch-name sites"): bans a `.replace('{slug}', ... || 'phase')` call
outright, sanctioned via renderPhaseBranchName or a dedicated comment.
Wired into scanRepo (no per-file exemption — this is a banned anti-pattern
everywhere, not a grammar with one legitimate owner). Now that #4126's fix
(prior commit) has landed, scanRepo reports zero violations across all four
.cts-scanning rules, restoring the simple "the live repo is clean" assertion
instead of a pinned-known-count characterization.

Also fixes a real bug an actual gsd-test run caught: findNameValidityDrift's
regex didn't tolerate the doubled-backslash template-string form its own
test claimed to cover (0 !== 1) — widened to \{1,2} matching
TOKEN_DRIFT_RE's existing tolerance for the same two forms.

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

* docs(#4126): document the {slug} degrade behavior; update changeset for the full seam

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

* fix: detectPhaseNumberFromFiles wrongly rejected bare, slug-less phase directories

Caught by an actual gsd-test run on the #4126 regression test, not a
hypothesis: a bare phase directory with no slug remainder (e.g.
.planning/phases/01/) has extractPhaseToken correctly return "01" — which is
simply identical to the directory name in that case, not its no-match
fallback. A stale `token !== phaseDir` check treated that equality as "no
numeric token found" and rejected it regardless, leaving phaseNum null and
silently skipping cmdCommit's phase-branching block entirely (the commit
proceeded on whatever branch was already checked out instead of the
phase branch).

phaseTokenShape.test(normalized) already excludes every genuine non-phase
case on its own: extractPhaseToken's real no-match fallback only fires for a
dirName that doesn't start with a digit or short letter+digit prefix, and
normalizePhaseName's leading-\d+ requirement rejects those regardless. The
equality check was redundant for real rejections and actively wrong for
bare-numeric directories.

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

* chore: backfill changeset PR number to 4640

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 12:42:04 -04:00
0xdhx
4cc2a466b5 fix(#4208): add --files-removed so commit --files can record a move without a directory pathspec (#4253)
* fix(#4208): add --files-removed so commit --files can record a move without a directory pathspec

`cmdCommit`'s `--files` list can stage an addition but never a deletion:
the #2014 guard skips a missing explicit entry because the filesystem
cannot tell "moved away" from "not written yet". A caller that moves a
file therefore had two forms, both wrong — a directory entry records the
move but also commits every unrelated file in that directory (a
concurrent session's in-flight todo, in the unattended execute-phase
sweep), and a file entry leaves the old path's deletion dangling with the
todo tracked at both paths.

`--files-removed <paths>` is the caller-declared delete intent. Each entry
names a file, or a directory whose tracked-but-absent files are the
removals; those paths are staged with `git rm --cached` and join the
commit pathspec. `--files` keeps its skip-if-missing contract untouched.
A file entry still present on disk fails the commit closed with the
existing staging-failure rollback; a never-tracked path is a no-op.
`--files-removed` alone is a declared scope, not the unscoped .planning/
sweep.

The dispatcher previously folded every non-flag token after `--files`
into that list, so a second list flag could not exist; each list now
runs from its flag to the next `--` token.

The execute-phase todo sweep names the moved todos on both sides from
CLOSED[@], and cleanup's archive commit moves .planning/phases/ and
.planning/quick/ under --files-removed.

Fixes #4208

Emitted-Drift-Ack-Growth: cleanup.md — the archive commit moves phases/ and quick/ under --files-removed; the growth is one paragraph stating why those two directories must not be --files entries

* chore(#4208): set changeset fragment pr to 4253

* fix(#4208): fit execute-phase.md under the ADR-857 ceiling and re-point the #2415 guard

Three CI failures, all consequences of this PR's own change.

1. gsd-core/workflows/execute-phase.md was 93,577 bytes against the
   ADR-857 Phase 6 margin gate's <= 93,400 (hard ceiling 93,600). The
   three-line rationale comment plus the four-line array-building block
   added 318 bytes to a file that had only 141 of headroom on next.

   Move the rationale to docs/CLI-TOOLS.md -- which this PR already
   extends with the --files-removed contract, and which is where the
   ADR-857 gate wants call-site detail to live rather than in the host
   workflow -- and fold the array build onto one line. 93,577 -> 93,372.

2/3. tests/close-phase-todos-stage-deletion.test.cjs pinned the #2415
   guarantee to its old MECHANISM: it regex-matched the literal
   .planning/todos/{completed,pending}/ directory pathspecs in the
   commit --files list. This PR deliberately replaced those with named
   files (a directory entry also committed an unrelated todo a
   concurrent session dropped in mid-close), so the guard failed on a
   change it should have accepted.

   Re-point it at the new mechanism without weakening it: assert the
   ADDED array reaches --files, the REMOVED array reaches
   --files-removed, STATE.md is still committed, and -- newly -- that
   the two arrays are built from $COMPLETED_DIR and $PENDING_DIR
   respectively. Verified by negative control: deleting
   --files-removed "${REMOVED[@]}" from the workflow still fails the
   test, so the #2415 regression remains caught.

Note for the merge queue: #4233 also grows execute-phase.md (+114). The
two are additive -- different regions, no textual conflict -- so with
both landed the file reaches ~93,486, over the 93,400 margin though
under the 93,600 hard ceiling. Whichever merges second will need to
reclaim ~86 bytes.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0183892Y3fxxirte4WNmBKbv

* fix(#4208): reclaim execute-phase.md bytes so the PR is net-neutral under the ADR-857 margin

Rebasing onto next surfaced the byte-gate collision flagged earlier on
this PR: #4284 grew execute-phase.md by 95 bytes (93,259 -> 93,354),
so this PR's +113 landed at 93,467 against the <= 93,400 margin in
tests/claude-orchestration.test.cjs.

Compact the close_phase_todos step this PR already edits -- drop the
PHASE_NUM indirection, fold the normaliser and the match guard, print
the closed list with one printf, shorten the step's prose -- without
touching the mechanism the #2415 guard pins (ADDED/REMOVED arrays, the
plain mv). 93,467 -> 93,349: 5 bytes under the base, so the PR no
longer spends any of next's 46 bytes of headroom.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MkU9ueBNHQzCpc3du5rKXm

* fix(#4208): classify absent index entries before staging a removal; restore removed entries exactly on rollback

Review of #4253 found three Majors with one root cause: the removal
side judged presence by fs.lstatSync alone, where the addition side
already reads `git ls-files -v` state. Absence from the worktree is not
removal:

- a submodule gitlink (mode 160000) whose directory was deleted by hand
  lists like a file and was `rm --cached` with no .gitmodules cleanup;
- a skip-worktree path is never materialised by a cone-mode sparse
  checkout, so a directory entry over a sparse-excluded tree dropped
  that whole tree from the index;
- an assume-unchanged path's worktree state is not something git
  itself consults;
- an intent-to-add entry (`git add -N`) renders as a plain cached entry
  on the empty blob, yet nothing tracked exists to remove and no
  rollback can restore the flag.

The index listing now carries each entry's `ls-files -v -s` tag, mode
and stage. Only a plain cached (H), stage-0, non-gitlink entry is a
removal candidate; every other state is left alone under a directory
entry (exactly like a present file) and fails closed when named
directly, with the state in the error. "Named directly" is decided on
RESOLVED paths, not strings -- realpath of the longest existing prefix
with the absent tail re-appended: an absolute path, `./x`, `--cwd`, or a
symlinked spelling of the tree (macOS `/var` ->
`/private/var`, where `process.cwd()` is the real path and the caller's
absolute path is not -- CI on this round's first push) all resolve to the
same entry, where a string compare against git's cwd-relative output
silently took the directory polarity (pre-push review, driven; the
symlink case is driven with an aliased fixture directory). The enumeration's domain is what
`ls-files -v -s` can emit for an index entry, stated at the classifier.

The third Major -- on an unborn HEAD a successful `rm --cached` was
never rolled back when a later entry failed -- is fixed differently
from the review's suggestion. Pushing the path into stagedPaths would
put it on the commit pathspec, which a root commit refuses ("pathspec
did not match", driven), and `git reset -- <path>` cannot restore an
entry with no HEAD anyway. Instead every index entry this call removes
is recorded (mode, blob) before the `rm` and put back with
`update-index --cacheinfo` on rollback. That also restores a
caller-pre-staged blob at a removed path exactly, where a reset would
have silently replaced it with HEAD's version. The rollback is
best-effort, as the addition-side reset already was, and the docs say
so.

Eight tests: gitlink under a directory entry, named directly, and named
by absolute path; skip-worktree both forms; intent-to-add both forms;
assume-unchanged named; unborn-HEAD partial failure restores the
removal; pre-staged blob survives the rollback.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MkU9ueBNHQzCpc3du5rKXm

* fix(#4208): drop the empty fenced block left dangling in cleanup.md's commit step

Review nit on #4253: inserting the --files-removed rationale between the
original bash block and its closing fence left an empty ```bash``` pair
before </step>. Harmless at runtime, a formatting artifact of this PR's
own diff; removed.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MkU9ueBNHQzCpc3du5rKXm

* fix(#4208): a boolean flag inside a commit path list no longer ends the list

Review minor on #4253: collectList stopped at the next `--` token, so a
positional wedged between a boolean flag and the next list flag
(`--files a --amend b --files-removed c`) was claimed by neither list
and silently dropped -- a regression in shape against the old
slice-to-end parse, which filtered `--` tokens and kept `b`. No current
call site interleaves that way, but the gap was real.

A list now runs to the next LIST flag (`--files` / `--files-removed`)
and skips boolean flags on the way, and a REPEATED list flag merges
its runs (`--files a --files b` -> [a, b]) as the slice-to-end parse
did -- a first cut stopped at the repeat and dropped `b`, the same
silent-drop shape one level over (pre-post comment audit). The only
change #4208 makes to parsing is that a second list flag can exist.
Tests: STATE.md wedged between --no-verify and --files-removed lands
in the commit; both runs of a repeated --files reach it.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MkU9ueBNHQzCpc3du5rKXm

* test(#4208): drive the reappearance window with a post-index-change hook

Review nit on #4253: the defensive re-check for a file recreated between
the absence test and `git rm --cached` -- the concurrent-session race
this PR's own changeset names -- had no test. git fires
post-index-change the moment `rm --cached` writes the index, so a hook
that copies the file back exactly then exercises the window
deterministically. The call reports staging_failed / "reappeared on
disk", commits nothing, and the rollback restores the removed entry.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MkU9ueBNHQzCpc3du5rKXm

* fix(#4208): restore a staged removal when the call records nothing

A `git rm --cached` that succeeds mutates the index whether or not a commit
follows. Only the staging-failure rollback put those entries back, so a call
that reached `nothing_to_commit` reported no state change while the removal sat
staged -- riding along on the caller's next commit.

The review named the unborn-HEAD, removal-only shape. Keying on `headExists`
would have fixed half of it: the guard also fires with a real HEAD when the
removed path is index-only (added, never committed), because `diff HEAD` reads
clean with the path absent on both sides. Both shapes now restore, at both
`nothing_to_commit` exits. The failure exits are deliberately left alone --
they report a failure rather than no-change, and the addition side leaves its
own staged paths there too.

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

* refactor(#4208): lift declared-removal staging out of the cmdCommit hotspot

`cmdCommit` was a critical-risk hotspot before this flag existed, and #4208 had
inlined another ~270 lines into it. `stageDeclaredRemovals(cwd, removedDeclared)`
now owns the index-state classification, path canonicalisation and entry
recording, returning the pathspec entries and the recorded removals its caller
merges.

Pure motion: no branch, message or probe changed. Only the two accumulators
became local names, and `restoreRemovedEntries` stays with the caller because
the exits that restore are the caller's. cmdCommit 888 -> 625 lines here; the
extracted helper is 277.

(Figures corrected after publication: an earlier version of this message said
854 -> 591 and claimed the result was below cmdCommit's pre-#4208 shape. Both
were wrong -- the count came from a faulty brace scanner, and `next`'s cmdCommit
is 581, so this is above it, not below.)

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

* test(#4208): property-test the two-list commit parser

RULESET.TESTS.property-based-testing asks a parser for at least one property
test asserting a domain invariant; `collectList` had only hand-picked examples,
one per shape a review round had already broken.

Hoisted it to module scope as `collectListFlagValues` and exported it in the
file's existing exported-for-tests convention -- a parser reachable only by
spawning the CLI can be tested one example at a time and no faster.

Three properties over generated argv: every positional lands in exactly the run
open at it whatever the flag order or count; no positional after the first list
flag is dropped or double-claimed; and with `--files-removed` absent the parse
equals the pre-#4208 slice-to-end parse. Controlled against two mutants -- a run
ending at any `--` token, and a repeated list flag that does not merge -- each
of which the properties catch.

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

* test(#4208): pin cleanup.md's archive commit to --files-removed

execute-phase.md's rewrite is pinned by the #2415 guard in this file;
cleanup.md's equivalent was not, so reverting its routing would have been
caught by nothing -- the mechanism's unit tests never read this file and pass
either way.

Asserts the two archived directories are under --files-removed and NOT under
--files (where a directory entry sweeps in a concurrent session's in-flight
writes), and that the destinations and STATE.md stay on the additive half.
Controlled by restoring the pre-#4208 sweep, which fails it.

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

* test(#4208): pin that a symlink to a directory is one tracked path

Review of #4253 read the `lstatSync(...).isDirectory()` test as a
symlink-following defect. Driving it says the opposite: git tracks the link as
a single blob (mode 120000) and does not traverse it, so the tracked paths
"under" it live at the real directory and were never named by the caller.
Following the link would stage those -- the directory sweep #4208 exists to
remove -- while the named entry still sat present on disk.

Pinned rather than changed, with the premise driven in the test body. Swapping
`lstatSync` for `statSync` -- the prescription as written -- fails it.

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

* chore(#4208): refresh the compact-content baseline for this PR's execute-phase edit

The base range added `tests/benchmark-compact-content.test.cjs` and a committed
token baseline over the compacted workflows. This PR edits
`gsd-core/workflows/execute-phase.md`, so the baseline drifts by +12 tokens on
that entry and on the aggregate.

Refreshed with `node scripts/benchmark-compact-content.cjs --write`; the diff is
those two entries and nothing else.

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

* fix(#4208): report a removal the call could not put back

Round review of this round found the restore itself unchecked: the helper
ignored `update-index`'s exit code, so a FAILED restore still reported
`nothing_to_commit` -- the same false "no state changed" the restore exists to
prevent, surviving one level down on the restore-failure path.

It now returns a boolean. The two no-change exits report `staging_failed`
naming the paths left staged; the staging-failure rollback still ignores it,
deliberately, because it is already reporting a failure and an unwritable index
is usually the failure being reported.

Driven with a post-index-change hook that makes the git dir unwritable the
moment `rm --cached` lands, so the restore cannot take its lock. Reverting both
guards fails the test.

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

* fix(#4208): disclose a removal the rollback could not restore

Round review refuted the reasoning behind leaving the rollback path's restore
unchecked. The claim was that this exit is already reporting a failure, so the
restore's result adds nothing. The counterexample is the ordinary case: the
reported failure is usually a DIFFERENT cause -- a contradictory declaration, a
reappeared path -- so a caller reading `failures` sees only that cause and
learns nothing about the removal still sitting in its index.

The rollback now appends a disclosure entry per un-restored removal, naming the
path. The reason and `file` still report the failure that caused the rollback;
the disclosure is additive.

Also moves the restore-failure test's chmod into a `finally`: `t.after` runs
AFTER the parent `afterEach`, so a throw before it left the fixture undeletable.

Both driven; reverting the disclosure fails the new test.

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

* fix(#4208): decide index state by observation, never by an exit code

The restore added two commits earlier keyed both its record decision and its
success verdict on git's exit code. An exit code answers "did the command
succeed", never "did the index change" -- execGit collapses a spawn timeout to
a non-zero exit, and a killed git can already have written the index. Round
review drove four failures from that one assumption, in both directions:

  - a failed `rm` still contributed an entry, so the rollback disclosed a
    removal that was never staged (stale index.lock);
  - a timed-out `rm` whose write DID land contributed none, so a real mutation
    was neither restored nor disclosed;
  - a timed-out `update-index` whose write landed reported failure, publishing
    a "could NOT be restored" disclosure that was false;
  - and the read-back that replaced it omitted `-z`, so core.quotePath rendered
    `café.md` as `"caf\303\251.md"` and an exactly-restored entry read as not
    restored -- the same quoting defect this PR already fixed for `preStaged`.

Everything now observes the index. A failed `rm` re-reads `ls-files -z` for the
path: gone means this call owns the removal and records it; still there means
nothing was staged; a probe that cannot answer becomes its own failure entry
rather than an assumption. The restore verifies the same way, comparing the
WHOLE entry (mode, blob, stage), because `--cacheinfo` restores all three and a
path-only test accepts an entry that came back as something else.

The verdict is three-valued -- `restored` / `not-restored` / `unverified` --
and the unverified wording says the restore could not be VERIFIED rather than
that it failed. The rm's own failure is pushed ahead of any probe diagnostic so
a timed-out removal keeps `timed_out: true` and its own message as the reported
cause.

Five regression cases, each negative-controlled against the shape it pins.

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

* fix(#4208): treat a declared removal path as a path, not a pathspec

An index path handed back to git is parsed as a PATHSPEC, and the removal side
handed several back. Three driven harms, all of them the sweep-in this flag
exists to remove, arriving through the operand rather than through a directory
entry:

  - a tracked file literally named `.planning/*.md` made `rm --cached` GLOB: it
    removed `peer.md` and `stays.md` too, only the declared entry was recorded,
    so the rollback restored one of three and the other two rode out as staged
    deletions the result disclosed nowhere;
  - the same name reached `git commit -- <paths>`, which globbed and committed
    an undeclared `M peer.md` alongside the declared removal;
  - and the intent-to-add probe (`diff --cached` over the path) matched a
    STAGED PEER instead of itself, so an `add -N` entry was misclassified as
    ordinary content, removed, and restored by `--cacheinfo` -- which cannot
    restore the intent flag. It came back as a real staged addition.

Every operand on this path is now `:(literal)`: the `rm`, both index probes,
the intent-to-add probe, the restore read-back, the entry-level `ls-files` /
`ls-tree`, and -- for the REMOVAL-derived entries only -- the downstream
`ls-files` / dry-run / `diff HEAD` / `commit` pathspec. `--files` entries keep
whatever pathspec behaviour they have today; that is not this change's to
alter. `:(literal)` still resolves a directory to its descendants (driven), so
the directory form is unchanged.

Closes what an earlier cut of this commit declared as a residual: a filename
beginning with `:` is now removable end to end, because the commit pathspec no
longer reinterprets it.

Also fixes a MINOR from the same review: cleanup.md's contract test checked the
destinations' position relative to `--files-removed` but never that `--files`
was present at all, so deleting the flag still passed.

Un-literalising the seven sites fails three of the new tests.

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

* fix(#4208): scope the rollback to the caller's own name space

Round review drove a rollback that destroyed the caller's own staged work. Two
causes, one of them pre-existing:

  - `git diff --cached` prints REPO-relative paths whatever the cwd, while
    `stagedPaths` holds the caller's cwd-relative names. In a project nested
    inside its repo (`<repo>/sub/.planning/...`) the two name spaces never
    intersect, so `preStaged` matched NOTHING, every path landed in `toUnstage`,
    and the reset unstaged a caller-staged deletion and modification that this
    call had never touched. `--relative` makes the two sets comparable, and is a
    no-op when the project IS the repo root. This governs the `--files` side too
    and predates this flag.
  - the rollback's `reset` was the last place a removal-derived name reached git
    as a bare pathspec; it takes `asPathspec` like every other site.

Driven on a nested fixture; dropping `--relative` fails the new test.

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

* test(#4208): gate six fixtures that Windows cannot construct

CI's `test (windows-latest, 24, shard 2/3)` went red on this round. Two
primitives the new fixtures rely on do not exist on Windows, both driven on a
real Windows host rather than inferred:

  - a filename containing `*` or `:` cannot be created at all (`IOException` /
    `FileNotFoundException`), which is four of the pathspec fixtures;
  - `chmod` cannot make a directory unwritable — a write into a ReadOnly
    directory succeeds — so the two restore-failure fixtures cannot drive the
    failure they exist to drive.

Each is skipped on win32 with its measured reason, in the repo's existing
`{ skip: process.platform === 'win32' ? '<reason>' : false }` form. The
behaviours they pin are platform-independent; only the fixtures are not.

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

* test(#4208): build git's index-syntax path with forward slashes

The remaining Windows red was mine, not the platform's: `git rev-parse :<path>`
takes a forward-slash path, and `path.join` yields backslashes there, so git
rejected it as an ambiguous argument. The hook in the same test already used
the slash form.

Not gated — the behaviour it pins is portable; only the argument was not.

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

* chore(#4208): refresh the compact-content baseline against the rebased base

`next` moved the `new-project` split and the aggregate under this PR's
execute-phase entry; regenerated with `scripts/benchmark-compact-content.cjs
--write` so the only leaves differing from the base's copy are the
execute-phase split and the aggregate it feeds.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FUcGM4FWeZV4cqvR7QBtJh

* chore(#4208): regenerate the macOS conformance tier for this PR's fixtures

`next` gained the macOS-specific conformance tier (#4593) after this branch
was cut. Its classifier (`scripts/gen-platform-conformance-tier.cjs --target
macos`) now selects `tests/commit-files-deletion.test.cjs` on the
`chmod-mode-bit` and `symlink-keyword` signals the PR's fixtures carry (the
chmod-driven failed-restore cases and the symlink-to-directory case).
Regenerated with `--target macos --write`; the platform tier was already in
sync. The file was modified, not added, which is why the added-files check
did not surface it.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FUcGM4FWeZV4cqvR7QBtJh

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: CI Rebase Check <ci@gsd-redux>
Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-09-11 12:26:55 -04:00
Tom Boucher
9f6f0d27dd docs(#4625): record the Codex native supervisor adapter as out-of-scope (#4637)
Codex's native subagent status is a fixed two-value enum
(CollabAgentToolCallStatus::{InProgress, Completed}) with no custom status
field, so the proposal's executing/verifying/completed triad cannot be
rendered in that view by anyone. Records the decision, and preserves the
reachable path -- codex exec --json ThreadEvents persisted by #4624, then
read at execute:wave:pre/post by an EoS capability.

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-09-11 10:55:51 -04:00
Michel Moreira
1f84f45ed5 fix(#4259): fold shell continuations before the T6 docs-parity site scan (#4423)
* fix(#4259): fold shell continuations before the T6 docs-parity site scan

The scan is $-anchored with [^\n]* on both sides of --grep=, so `git log` and
`--grep=` had to share a physical line. A backslash-continued derivation —
the natural way to write a git log carrying a long ERE — produced zero hits
and T6 passed on it.

Both generations of the assertion were defeated. The current anti-revert ban
let a wrapped site through outright; at v1.12.0, where T6 instead asserted
pattern conformance, a wrapped site was silently exempted from the very
checks written to catch the macOS \b-no-op class, so it could have carried
exactly the malformed pattern T6 exists to reject. A real candidate
implementation for #3926 wrapped its derivation, passed T6, and was caught
only by later manual review.

Fold the continuations before matching rather than widening the regex: the
assertion's message and its PHASE_SCOPE_NUM filter both assume one site is
one string, and a [\s\S]*? would run the scan across unrelated statements.
Correcting the input repairs everything built on the scan at once.

The fold uses [ \t]* after the newline rather than \s* — the shell's own
rule, and it cannot swallow a blank line and glue two unrelated statements.
The scan is hoisted to findGrepSites so the controls can drive it directly:
the continued form is caught, the same-line form still is, a benign --grep
stays clean, a wrapped unrelated assignment is not glued, a continuation does
not cross a blank line, and the live workflow files still report nothing — so
this lands without editing any workflow to appease it.

* fix(#4259): honor shell continuation boundaries

* test(#4259): use canonical fenced-block scanner

* test(#4259): centralize shell continuation scanning

---------

Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-09-11 10:40:37 -04:00
Tom Boucher
aad96e0b5f test(#4521): migrate capability subsystem batch to named timeout constants (#4627)
Batch 10 of the ad hoc timeout literal migration (epic #4445). Replaces
every bare numeric timeout/timeoutMs object-literal property in
tests/adr857-core-without-capabilities.test.cjs, tests/capability-cli.test.cjs,
tests/capability-probe-fallback.test.cjs, tests/capability-state.test.cjs,
tests/capability-trust.test.cjs,
tests/capability-validator-task-content-resolver.test.cjs, and
tests/capability-writer.test.cjs with a named constant, per
eslint-rules/no-adhoc-timeout-literal.cjs. Removes these 7 files from the
rule's allowlist.

Reuses the existing PROBE_TIMEOUT_MS constant at 8 sites across 3 files.
Adds 7 new file-local constants (no promotion to the shared helper needed
this batch -- every new class is confined to exactly one file, below the
two-file promotion bar): GSD_TOOLS_CLI_TIMEOUT_MS,
FRAGMENT_PROBE_SNIPPET_TIMEOUT_MS, INSTALLED_RUNTIME_CLI_TIMEOUT_MS,
FIXTURE_MCP_SERVER_TIMEOUT_VALUE, TASK_RESOLVER_FIXTURE_TIMEOUT_MS,
TASK_RESOLVER_TIMEOUT_CEILING_MS, and TASK_RESOLVER_TIMEOUT_CEILING_PLUS_ONE_MS
(the last two forming a boundary-coverage limit/limit+1 pair). No src/bin
file touched, no numeric value changed anywhere.

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-11 09:55:55 -04:00
0xdhx
7249bdddac fix(#4294): reserve a full progress bar for 100% and give the render half one owner (#4473)
* fix(#4294): reserve a full progress bar for 100% and give the render half one owner

Six call sites each carried `Math.round((percent / 100) * width)` inline, and
every copy rounded to a full bar before the percent reached 100: from 95 up at
width 10, from 98 up at width 20. A project at 19/20 plans drew the same bar as
a shipped one beside a number that said otherwise, and an out-of-range percent
threw `RangeError` from the unguarded `'░'.repeat`.

ADR-3180 Decision 7 gave the completion-RATIO derivation one owner
(`clampPercentFromFraction`). This gives the RENDER half the same:
`progressBarFilledCells` / `renderProgressBar` in phase-lifecycle.cts, with the
`progress` table and bar renderers, the stats renderer, the gsd2 import writer,
and #4231's `formatProgressMachineSegment` (which now serves both STATE.md
writers) all drawing through it.

Contract: below 100 the fill is held one cell short of the width, so only the
saturating percents move (95-99 at width 10, 98-99 at width 20) and every other
value in 0-100 renders as before — pinned by an exhaustive comparison against
the legacy formula at both widths. Null / non-finite renders an empty bar;
out-of-range is clamped, never thrown.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012hbFn24VWaxJBw8DUWjAmU

* chore(#4294): set changeset fragment pr to 4473

* docs(#4294): correct the pre-fix inline call-site count to five

The kernel's doc comment said SIX call sites carried their own
`Math.round((percent / 100) * width)`. The base tree has five: three in
`commands.cts` plus one each in `gsd2-import.cts` and
`formatProgressMachineSegment`, the latter two using `/ 10` with the width
already substituted (`pct` and `clamped` respectively).

The six is #4294's count of consumers -- it counts `cmdStateUpdateProgress`
and `syncCore` separately, but #4231 had already routed both through
`formatProgressMachineSegment` (as it does `applyPostSyncPreservation`), so by
this branch's base they share one copy. The comment now states the tree's count
and records where the six comes from, so neither number reads as an error
later.

Comment-only; no behaviour change, and no change to compiled output.

---------

Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-09-11 00:42:55 -04:00
Tom Boucher
523be34133 fix(#4282): register PATTERNS.md as a canonical .planning/ artifact (#4618)
* test(#4282): prove PATTERNS.md is unrecognized by the artifact registry

Regression test only, no fix yet: CANONICAL_EXACT in src/artifacts.cts was
never updated when workflows/graduation.md started writing .planning/
PATTERNS.md, same omission class as the already-fixed #3224 (WINDOWS.md).

Expected RED on this commit (src/artifacts.cts is unchanged).

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

* fix(#4282): register PATTERNS.md as a canonical .planning/ artifact

CANONICAL_EXACT in src/artifacts.cts was never updated when
workflows/graduation.md started writing .planning/PATTERNS.md for the
`patterns` graduation-target category -- same omission class as the
already-fixed #3224 (WINDOWS.md). validate.health's W019 falsely flagged it
as unrecognized on every repo that has run the graduation scan.

Also backfilled 5 other pre-existing stale rows in
gsd-core/templates/README.md's artifact table (WINDOWS.md, STATE-ARCHIVE.md,
milestone.lock, state.json, skill-manifest.json) that were already in the
source registry but missing from the docs table -- found while fixing this
exact drift class, cheap to close alongside it.

RED proven on f3dd791fb8cda18196803e7144ce20e506d6490b (test-only commit,
gsd-test outcome:failed, exactly the new PATTERNS.md test failing).

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

* docs(#4282): fix stale function name in skill-manifest.json comment

Review finding: both the source comment and the new docs row said
"routeSkillManifest" -- no such symbol exists (verified via Memtrace); the
actual function is cmdSkillManifest (src/init.cts). Copied verbatim from a
pre-existing comment, not introduced by this PR, but cheap to fix alongside.

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

* docs(#4282): add changeset fragment

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

* docs(#4282): backfill changeset PR number

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

* fix: isolate lint-vendored-deps-manifest.test.cjs's fixRow tests from the real vendor file

Genuine, pre-existing defect found and fixed per this repo's no-defer policy
(discovered while investigating a real CI failure during this PR's own
merge attempt, user-directed investigation -- not deferred to a separate
issue since it was actively blocking work and root-caused with concrete
evidence, not speculation).

Root cause: fixRow(row) (scripts/lint-vendored-deps.cjs) unconditionally
does fs.copyFileSync(upstreamCjs, vendoredCjs) as its first line. All three
tests in the #4573 describe block called fixRow(row) with the REAL js-yaml
row, so all three wrote to the real, shared gsd-core/bin/lib/vendor/
js-yaml.cjs -- a file other test files' require() calls can read at any
moment, since node --test runs files concurrently in this repo.
fs.copyFileSync's write is not atomic against a concurrent reader on every
filesystem; a concurrent require() elsewhere caught the file mid-overwrite
and read a truncated file, crashing an entirely unrelated test
(m9-statelock-write-error-orphan.test.cjs) with a SyntaxError.

Confirmed via two real CI log fetches, not assumed: the exact same shard
grouping (same 308 files) ran clean ~90 minutes earlier during PR #4615's
own final merge CI, with the identical #3660 reap-fix code already present
-- ruling out a deterministic connection to that change and confirming a
genuine, non-deterministic timing race in this pre-existing test design.

Fix: all three tests now redirect row.vendoredCjs to a private os.tmpdir()
path via a cloned row object before calling fixRow, so the real vendored
file is never touched. upstreamCjs stays pointed at the real node_modules
copy (read-only, safe to share).

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

* fix: also isolate fixRow's package.json pin-rewrite from the real file

Review finding (major) on the previous race-condition fix: fixRow's pin
-rewrite path still hardcoded path.join(ROOT, 'package.json'), so the third
#4573 test still wrote the real, shared package.json -- read at module
top-level by dozens of other test files, the same concurrent-file race
class already fixed for the vendored .cjs copy.

Adds an optional pkgRoot parameter (defaults to the real ROOT) threaded
through readPinState/checkRow/fixRow -- fully backward-compatible, every
existing call site (the CLI --fix path, any other caller) is unaffected
since the default is unchanged. The pin-rewrite test now builds an isolated
temp root (its own package.json + node_modules/js-yaml/package.json) and
passes it explicitly, so the real package.json is never touched either.

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

* fix: use helpers.cleanup instead of raw fs.rmSync in test cleanup

CI caught it: local/no-raw-rmsync-in-tests flagged the three t.after temp-dir
cleanup calls added for the fixRow isolation fix. helpers.cleanup() carries
the Windows-EBUSY retry budget (maxRetries/retryDelay) that raw fs.rmSync
lacks.

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

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-10 22:46:18 -04:00
Dennis Alexis Valin Dittrich
1316e03b84 fix(#4424): assert the launcher snippet's env surface is covered by the scrub lists (#4503)
* chore(#4424): assert launcher snippet env surface is covered by scrub lists

SNIPPET_SCRUB is hand-maintained for vars TEST_ENV_BASE's registry-derived
list can't carry. Nothing asserted the union actually covers every
${VAR:-default} arm in _runtime-launcher.snippet.sh, so a new runtime-home
arm with no scrub entry could drift silently — the #4205 shape, one door
over. Adds (A2): extracts every ${[A-Z_]+:-} capture from the snippet and
checks membership in TEST_ENV_BASE, SNIPPET_SCRUB, or the two vars the
snippet/fixtures set themselves (RUNTIME_DIR, GSD_TOOLS).

* fix(#4424): allow digits in the (A2) fallback-var regex

CodeRabbit review on fork PR #37: [A-Z_]+ silently drops any \${VAR:-...}
capture whose name contains a digit (e.g. CLAUDE2_CONFIG_DIR) instead of
flagging it uncovered, defeating the guard's own purpose. Matches bash
identifier syntax instead: leading letter/underscore, then alnum/underscore.

* fix(#4424): rename SELF_ASSIGNED to reflect RUNTIME_DIR's real provenance

Gemini adversarial review (agy) on fork PR #37: RUNTIME_DIR is an external
input the snippet reads via \${RUNTIME_DIR:-...}, never assigns — every
fixture sets it in-script before sourcing the snippet. Only GSD_TOOLS is
truly snippet-self-assigned. SELF_ASSIGNED conflated the two; renamed to
CALLER_OR_SELF_ASSIGNED. No behavior change.

Reviewed and rejected: moving RUNTIME_DIR into SNIPPET_SCRUB (blanking it
is indistinguishable from unset to the resolver's own \${RUNTIME_DIR:-...}
fallback, re-opening the #4205 ambient-leak this suite guards against —
see the existing comment at line ~1801); widening the regex to mixed-case,
colon-less \${VAR-default}, or \${VAR:=default} forms (none exist in the
snippet, and the issue's own spec scopes this to \${[A-Z_]+:- captures);
stripping bash comments before matching (the snippet is one physical line
with zero '#' characters, so no comment can exist in it).

* fix(#4424): guard CALLER_OR_SELF_ASSIGNED against silent future additions

trek-e review on PR #4503: a future ${VAR:-default} arm could be dropped
into this set without confirming it is genuinely caller-supplied/
self-assigned rather than a real coverage gap. Adds a comment requiring
justification for any addition, pointing to SNIPPET_SCRUB as the default
when in doubt. No behavior change.

* fix(#4424): guard (A2) against a vacuous pass on empty extraction

agy adversarial review (gemini-3.8-flash-high, /gsd-review lane) on PR
#4503: if the snippet becomes unreadable/truncated/renamed, matchAll
yields zero matches, uncovered stays [], and assert.deepStrictEqual
passes vacuously — same "guards the guard" gap the sibling (E)-adjacent
tests already close with assert.ok(files.length > 0, ...). Asserts
extracted.length >= 15 before filtering.

Reviewer's second finding (regex misses colon-less ${VAR-default}) is not
applied: no such form exists in the snippet today, and 688cc1c already
recorded this exact widening as scope creep the issue's own spec (${[A-Z_]+:-)
does not ask for.

---------

Co-authored-by: Test <test@test.com>
Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-09-10 22:12:22 -04:00
Michel Moreira
eadcba5f53 fix(#4481): anchor bold STATE field reads to line start (#4510)
* test(#4481): reproduce mid-sentence state field reads

* fix(#4481): anchor bold STATE field reads to line start

* docs(#4481): add changeset for #4510

* fix(#4481): align bold field readers with anchored writers
2026-09-10 20:29:10 -04:00
Tom Boucher
43c48ce92e Merge pull request #4621 from open-gsd/test/4520-batch9-generators-doc-gates
test(#4520): migrate generators/doc-gates/attribution batch to named timeout constants
2026-09-10 20:29:05 -04:00
sim
2eef8ada4f test(#4520): migrate generators/doc-gates/attribution batch to named timeout constants
Batch 9 of 17 in the ad hoc timeout literal migration (epic #4445).
Replaces every bare numeric timeout/timeoutMs object-literal property in
14 files with a named constant, per eslint-rules/no-adhoc-timeout-literal.cjs.
Removes the 14 files from the rule's allowlist.

The issue's own guess ("all run a scripts/*.cjs generator or lint script
once, BUILD_TIMEOUT_MS class") needed two corrections found by reading
every site directly. First, BUILD_TIMEOUT_MS's own doc comment scopes it
specifically to scripts/build-hooks.js, which none of this batch's
generator/lint-script sites run — a new shared constant,
GENERATOR_SCRIPT_TIMEOUT_MS, covers the class instead. Second,
no-pending-3212-markers.test.cjs's single site spawns `git ls-files`
directly, not a scripts/*.cjs script at all — routed to a second new
shared constant, REAL_REPO_GIT_TIMEOUT_MS, promoted once
emitted-attribution.test.cjs's own git-plumbing sites were found sharing
the same class and value.

Isolated Standards-axis review caught a further misclassification: one
of REAL_REPO_GIT_TIMEOUT_MS's three emitted-attribution.test.cjs sites
actually builds a fresh throwaway temp repo (createTempDir + git init),
contradicting that constant's own real-repo-tree-only scope. Fixed with
a new file-local FRESH_FIXTURE_GIT_TIMEOUT_MS holding the exact
pre-existing value under an honest name, rather than reusing the shared
GIT_FIXTURE_TIMEOUT_MS (which would have doubled the bound).

emitted-attribution.test.cjs also gets two more file-local constants:
HEAVY_REAL_TREE_TEST_TIMEOUT_MS (node:test's own per-test timeout
option, not a spawn bound) and BUILD_HOOKS_UNDER_LOAD_TIMEOUT_MS (the
same build-hooks.js script as the shared norm, at 4x its bound inside
the suite's heaviest test). emitted-ack-trailer.test.cjs gets
IMPOSSIBLY_SHORT_GIT_TIMEOUT_MS — the one value in this migration that
is deliberately tiny (20ms), used to force a timeout in a negative test,
not generous headroom.

No src/bin file touched, no numeric value changed anywhere.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-10 19:22:04 -04:00
Tom Boucher
a1a4182bda Merge pull request #4616 from open-gsd/test/4519-batch8-security-scanners 2026-09-10 19:01:23 -04:00
Michel Moreira
411199d08b fix(#4480): require a name column in roadmap phase tables (#4511)
* test(#4480): reproduce unnamed roadmap table phases

* fix(#4480): require named roadmap phase tables

* docs(#4480): add changeset for #4511

* test(#4480): cover phase name columns generatively

---------

Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-09-10 18:32:55 -04:00
Tom Boucher
5e2055ab90 fix(#3660): reap a bounded check's orphaned worker after its own timeout kill (#4615)
* test(#3660): prove a bounded node-test check orphans its worker on timeout

Regression test only, no fix yet: `execFileSync`'s timeout kills the direct
`node --test` runner but never the per-file worker it forks by default since
Node 22 (`--test-isolation=process`). The worker is reparented to PID 1 and
can busy-loop forever while the bounded-check verdict still reports a clean
fail-closed timeout.

Adds three tests driven through the real, uninjected defaultRunCheck path:
a hanging subject's worker must not survive the call, a control proving the
liveness probe can actually distinguish alive-vs-dead, and a non-hanging
failure proving the reap-gating logic added by the next commit doesn't
change the ordinary-failure return shape.

Expected RED on this commit (src/prohibition-enforcement.cts is unchanged).

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

* fix(#3660): reap a bounded check's descendant worker after its own timeout kill

execFileSync's timeout only signals the direct child (the node --test runner);
since Node 22, node --test forks a per-file WORKER by default
(--test-isolation=process), so a hung subject's worker survives the bound,
gets reparented to PID 1, and busy-loops forever while the verdict still
reports a clean fail-closed timeout.

Adds execFileSyncReaping (wraps execFileSync, detached:true on POSIX) and
reapDescendants(pid): POSIX process.kill(-pid, 'SIGKILL') against the
process group, Windows an absolute-path taskkill /PID <pid> /T /F (never a
bare PATH-resolved name -- PR #3681 review minor-9). The reap fires ONLY
when this call's own timeout killed the child (the thrown error carries a
signal) -- an ordinary non-zero-exit failure has signal:null and is left
alone, which is the fix for PR #3681's Blocker-3 (that attempt reaped on
every throw, risking a PGID-reuse collateral kill on a ordinary red run).

All four execFileSync(process.execPath, ...) call sites now route through
execFileSyncReaping: runNodeTestWithSubject, defaultRunCheck's node-test and
lint-rule arms, defaultProveFailFirst's lint-rule arm (its node-test arm
reuses runNodeTestWithSubject).

RED proven on 0bd741fbc2b2ad0792fdf2361de14b68b2e3aea3 (test-only commit,
gsd-test outcome:failed, exactly the new orphan-detection test failing).

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

* docs(#3660): address code-review nits on the reap doc comments

- Clarify execFileSyncReaping's gate covers a maxBuffer-triggered kill too,
  not just a timeout -- both set .signal, both are "this call's own bound".
- Note reapDescendants' POSIX catch swallows any errno, not only ESRCH.

No behavior change (tsc --noEmit clean, no-op for the compiler).

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

* debug(#3660): fix hardcoded Windows path + add temp diagnostics for CI reap failure

Real defect #1 (fixed for good): taskkillPath() had a 'C:\Windows' literal
fallback, tripping tests/hardcoded-paths.test.cjs's repo-wide scanner. Now
returns null when neither SystemRoot nor windir is set, and the caller skips
the Windows reap rather than guessing a path.

Real defect #2 (under investigation): the prior GREEN gsd-test run showed the
#3660 orphan-detection test STILL failing on linux-node24 even with the fix
applied -- the worker survived. Isolated diagnostic scripts against the exact
same execFileSync({detached:true})+process.kill(-pid) mechanism, including
one using a REAL node --test worker, both confirm the mechanism works
correctly on macOS (group-kill reaches the worker). This commit adds
TEMPORARY stderr instrumentation (GSD-DEBUG-3660 tags) around the reap
attempt to get direct evidence from the actual Linux CI environment before
guessing further. Will be removed once the root cause is confirmed.

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

* fix(#3660): gate the reap on err.code === 'ETIMEDOUT', not err.signal

Root cause of the prior GREEN run's failure, confirmed with real evidence
from linux-node24 CI: execFileSync's thrown error on a genuine timeout-kill
does NOT reliably set `.signal` -- on that environment it came back
`signal: null, code: 'ETIMEDOUT', status: 7`, so the reap gate never fired.
A separate macOS/Node run of the identical scenario showed `signal: 'SIGTERM'`
for the same case -- neither field alone is safe across platforms/versions,
but `code === 'ETIMEDOUT'` was present and correct in both. Verified via
temporary stderr instrumentation on a real gsd-test run (now removed) before
landing this, rather than guessing from the macOS-only result.

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

* debug(#3660): round-2 instrumentation -- ETIMEDOUT gate fix alone didn't work

The err.code === 'ETIMEDOUT' gate fix (previous commit) did not resolve the
failure -- same test still red on real Linux CI. Adding probes around the
actual process.kill(-pid, 'SIGKILL') call itself to see whether it throws,
and whether the group is observably alive/dead before and after, since the
gate may now be firing correctly but the kill may not be reaching the
worker's process group on this environment. Temporary, will be removed.

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

* fix(#3660): the fix was already correct -- the TEST's liveness probe was not

Root cause of the two prior red rounds, confirmed via process-group probes on
real Linux CI: process.kill(-pid, 'SIGKILL') succeeds (no throw) every time
the ETIMEDOUT gate fires -- the worker genuinely IS killed. But
process.kill(pid, 0) cannot tell a truly-running process from an
already-killed ZOMBIE stuck unreaped: this bench's container has no init
process collecting arbitrary orphans, so a killed worker (reparented to PID 1
on death) sits as a zombie forever, still answering kill(pid,0) with "exists"
even though it is fully dead and burning zero CPU -- which is the actual harm
#3660 is about.

Test now reads /proc/<pid>/stat's process-state field on Linux and treats 'Z'
(zombie) as dead, falling back to the plain kill(pid,0) probe elsewhere (no
/proc on macOS/Windows).

Also strips the round-2 GSD-DEBUG-3660b instrumentation now that its evidence
has been used and the real root cause is fixed.

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

* docs(#3660): merge duplicate doc comment, fix stale err.signal reference

Leftover artifacts from the multi-round debugging: taskkillPath had two
stacked doc comments (an edit only replaced the function body, not the
original comment above it); a test comment still said "err.signal" after
the gate was changed to err.code === 'ETIMEDOUT'. Comment-only, no behavior
change (tsc --noEmit no-op).

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

* fix(#3660): close a vacuous-test gap and harden isAlive's error handling

Code review finding (major): none of the three #3660 regression tests ever
asserted isAlive(pid) === true for a genuinely running process -- the real
code path is fully synchronous, so there's no natural window to observe
"alive" before "dead" inside those tests. A probe that always returned false
would have passed all three vacuously. Added a standalone test proving
isAlive(process.pid) reports true, using this test's own unambiguously-alive
process, running before the three existing tests.

Also hardened isAlive's /proc read-failure handling (minor finding): only
ENOENT (process genuinely gone) now means "dead"; any other read error
(EACCES, EIO, ...) reports "alive" (inconclusive) rather than risking a
false "dead" that would silently mask a real regression.

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

* docs(#3660): add changeset fragment

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

* docs(#3660): backfill changeset PR number

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

* fix(#3660): bound the taskkill spawnSync with a timeout

CI caught it: local/require-subprocess-timeout (DEFECT.UNBOUNDED-SUBPROCESS)
flagged the new spawnSync(taskkill, ...) call in reapDescendants' Windows
branch for having no timeout. 5s bound -- a local OS command, not a network
call; reapDescendants already treats any failure (including a hypothetical
hang) identically via its existing try/catch, so the bound costs nothing and
just prevents a stuck taskkill from blocking the caller forever.

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

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-10 17:55:05 -04:00
sim
150acd78c1 test(#4519): migrate security-scanner batch to named timeout constants
Batch 8 of 17 in the ad hoc timeout literal migration (epic #4445).
Replaces every bare numeric timeout/timeoutMs object-literal property in
tests/secret-scan-lint.security.test.cjs, tests/security-scan.security.test.cjs,
tests/security-prompt-injection.security.test.cjs, tests/prompt-injection-scan.security.test.cjs,
tests/read-injection-scanner.security.test.cjs, tests/read-injection-scanner.property.test.cjs,
and tests/security.test.cjs with a named constant, per
eslint-rules/no-adhoc-timeout-literal.cjs. Removes the 7 files from the
rule's allowlist.

The issue guessed this batch "most likely needs its own named
SCAN_TIMEOUT_MS." Reading every one of the 19 call sites directly found a
more specific picture: 8 sites across 3 files scan exactly one small temp
fixture file and match the existing QUICK_SPAWN_TIMEOUT_MS class exactly
(reused, no new constant). Two new shared constants cover genuinely
distinct classes that happen to coincide in value:
SCAN_USAGE_ERROR_TIMEOUT_MS (a bash scan script given missing arguments)
and MALFORMED_INPUT_HOOK_TIMEOUT_MS (a Node hook fed malformed JSON) --
kept as separate names per this migration's standing rule that numeric
coincidence is never identity. Three file-local constants cover a real
multi-file directory scan, a property-fuzzing safety net, and a
path-traversal hook test, each with its own pre-existing rationale
preserved.

No bound is lowered or raised anywhere in this batch, honoring the
issue's explicit caution that security-scan timing margins deserve
extra scrutiny. No src/bin file touched.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-10 17:09:23 -04:00
Tom Boucher
b25fe4dbaf Merge pull request #4614 from open-gsd/test/4518-batch7-loop-hook-point-e2e 2026-09-10 16:59:25 -04:00
sim
6d6e3eea73 test(#4518): migrate loop/hook-point e2e batch to named timeout constants
Batch 7 of 17 in the ad hoc timeout literal migration (epic #4445).
Replaces every bare numeric timeout/timeoutMs object-literal property in
tests/loop-render-hooks.test.cjs, tests/loop-walk.qa.test.cjs,
tests/loop-hooks-empty-points-e2e.test.cjs, tests/loop-hooks-ship-pre-e2e.test.cjs,
tests/loop-hooks-verify-post-e2e.test.cjs, tests/check-gap-analysis-plan-post-e2e.test.cjs,
tests/check-tdd-review-checkpoint-e2e.test.cjs, tests/execute-wave-post-gate-pipeline-e2e.test.cjs,
tests/plan-pre-hook-e2e.test.cjs, and tests/qa/tdd-walk.cjs with a named
constant, per eslint-rules/no-adhoc-timeout-literal.cjs. Removes the 10
files from the rule's allowlist.

Promotes a new shared class norm to tests/helpers/timeouts.cjs,
LOOP_HOOK_POINT_CLI_TIMEOUT_MS: 7 files independently arrived at the same
value for a single gsd-tools.cjs CLI subcommand invocation with no
confirmed subprocess fan-out. Reuses the existing PROBE_TIMEOUT_MS for
loop-render-hooks.test.cjs's 11 sites (same class, exact value match).
Adds 4 file-local constants for values that share a class with the new
norm or an existing one but diverge in pre-existing value, or that
numerically coincide with an unrelated existing constant without
matching its actual operation.

Isolated Standards-axis review caught that the new shared constant's doc
comment exhaustively enumerated 3 verb families while a 7th genuine site
(an `init new-project` invocation) also correctly belonged to the class;
fixed by rewording the comment to state the class definition (call
shape) first and list all 4 representative verbs, explicitly
illustrative rather than exhaustive. No value changed, no site's
classification changed.

No src/bin file touched, no numeric value changed anywhere.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-10 15:50:52 -04:00
Tom Boucher
138e70d734 test(#4517): migrate hook/guard invocation batch to named timeout constants (#4608)
Batch 6 of 17 in the ad hoc timeout literal migration (epic #4445).
Replaces every bare numeric timeout/timeoutMs object-literal property in
tests/read-guard.test.cjs, tests/feat-2483-review-claude-mds-guard.test.cjs,
tests/gsd-write-guard.test.cjs, tests/gsd-secret-read-guard.test.cjs, and
tests/hooks-crash-policy.test.cjs with a named constant, per
eslint-rules/no-adhoc-timeout-literal.cjs. Removes the 5 files from the
rule's allowlist.

Reuses existing tests/helpers/timeouts.cjs class norms where the shape
matches (QUICK_SPAWN_TIMEOUT_MS x2, PROBE_TIMEOUT_MS x1). Adds two
file-local constants for classes not shared across files:
READ_GUARD_HOOK_TIMEOUT_MS (read-guard.test.cjs's 4 sites, a tighter
no-fan-out bound than QUICK_SPAWN_TIMEOUT_MS with no bench data to widen
it) and FIXTURE_PROBE_CAPABILITY_TIMEOUT_MS (fixture data, not a real
spawn timeout).

The fifth site (feat-2483-review-claude-mds-guard.test.cjs's review-lane
invoke spawn) was initially classified onto HOOK_FANOUT_TIMEOUT_MS;
isolated Spec-axis review caught that this call is one nested spawn, not
the multi-spawn git-hook fan-out shape that constant's own doc comment
defines. Corrected to a new file-local REVIEW_LANE_INVOKE_TIMEOUT_MS
holding the exact pre-existing 60000ms value under an honest name,
rather than narrowing to PROBE_TIMEOUT_MS with no bench justification.

No src/bin file touched, no numeric value changed anywhere.

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-10 15:36:43 -04:00
Michel Moreira
93ba63aeff fix(#4482): strip Copilot notes from OpenCode artifacts (#4532)
* fix(#4482): strip Copilot notes from OpenCode artifacts

* chore: add changeset for #4532

* fix(#4482): filter runtime notes across emitted surfaces

* fix(#4482): make runtime note filtering runtime-neutral

* test(#4482): keep ack fixture outside registered provenance

---------

Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-09-10 15:29:08 -04:00
Tom Boucher
1e47560e34 feat(#4593): add a macOS-specific conformance tier, final phase of epic #4589 (#4607)
test-conformance's macos-latest leg (Phase 2, #4591) has been running the
same 546-file, Windows-oriented conformance-tier list as windows-latest --
built from signals like windows-shell-token/windows-env-var that have
nothing to do with macOS. Issue #4593 asked for macOS coverage sized to
its own evidence-backed surface (zsh dispatch, case-sensitivity, darwin-
specific behavior) instead.

Issue #4593 was filed before Phase 5 (#4603) existed and referenced
updating test-full's macOS legs -- that job is gone. Corrected the issue's
body before any code was touched: the "shrink from full replay" half of
the original ask was already done by Phase 5; what remained was narrowing
the still-Windows-oriented tier macOS was inheriting.

Two design assumptions were measured and rejected before accepting a
design (documented in docs/adr/4593-macos-conformance-tier-architecture.md):
- Reusing the general tier's signals minus its 3 Windows-specific
  categories barely narrows anything (546 -> 424, 78% retained) -- most
  files match multiple signals and only need one to survive exclusion.
- A standalone CRLF/autocrlf signal, despite the issue naming
  "CRLF-checkout behavior": even narrowed to /\bCRLF\b|autocrlf/i it hit
  143/930 files. Root cause: CRLF is primarily a Windows checkout concern
  in this codebase (ADR-1703 files it under DEFECT.WINDOWS-TEST-
  PORTABILITY), so the signal was really re-selecting Windows-relevant
  files already covered by the general tier, not narrowing macOS
  specifically.

Built 5 new, genuinely macOS-specific signals instead: darwin-literal
(darwin alone, not the general tier's win32-OR-darwin), zsh-dispatch,
case-sensitivity, plus chmod-mode-bit and symlink-keyword reused verbatim
from the general tier (genuinely Unix-relevant, not Windows-motivated).
Measured against the real tree: 196 of 930 eligible unit-suite files
(21%), versus the general tier's 546 (59%) -- a real, evidence-backed
narrowing.

scripts/gen-platform-conformance-tier.cjs gains classifyMacosContent/
classifyMacosTree/renderMacosGeneratedFile and a --target windows
(default, unchanged)/--target macos CLI flag, so the same generator
produces two independent, gated outputs rather than needing a second
script. New committed output: scripts/lib/macos-conformance-tier.
generated.cjs. .github/workflows/test.yml's test-conformance job: only
the macos-latest leg's file-list source changes; windows-latest is
byte-for-byte untouched. New shipped-file ripples handled proactively
(19 install-tree fixtures regenerated, bin/install.js registered).

An isolated code-review pass found one real defect: the ADR's per-
category count table had drifted by 1 (zsh-dispatch, case-sensitivity)
because the new test file's own fixture strings joined the tree it
classifies after the table was authored -- fixed, with the union total
(196, what CI actually gates on) confirmed unaffected. An isolated
security-review pass found no qualifying findings.

The ADR also records an explicit requirement for any future widening
proposal: check whether the motivating regression is already covered by
Phase 1's no-rendered-text-length-assert lint rule (#4590) before
re-proposing full macOS/Linux parity, since that is exactly what #4421's
root cause was (a rendered-text-length assertion, not a real behavioral
divergence).

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-10 14:37:15 -04:00