Commit Graph

169 Commits

Author SHA1 Message Date
Tom Boucher
c6df4e1e46 fix(#4455): autonomous.md and complete-milestone.md resolve STATE/ROADMAP/MILESTONES/PROJECT/REQUIREMENTS through the workstream-scoped init fields (#4542)
* fix(#4455): thread workstream-scoped paths through autonomous and complete-milestone workflows

autonomous.md and complete-milestone.md read/wrote hardcoded literal
`.planning/STATE.md` / `.planning/ROADMAP.md` / `.planning/milestones/...`
paths in their shell fences, bypassing workstream scoping entirely. With
GSD_WORKSTREAM=alpha set, planningDir(cwd) correctly resolves into
workstreams/alpha/, but a literal `cat .planning/STATE.md` still read the
ROOT file (or silently returned empty if root state was absent) --
reproduced deterministically in the issue's own repro.

Root cause: each workflow step's bash fence is a separate shell
invocation, and cmdInitManager/cmdInitCompleteMilestone's JSON payloads
never carried resolved state_path/roadmap_path/archive_dir fields for the
workflows to extract -- unlike cmdInitPlanPhase, which already does this
correctly and is the pattern this fix mirrors.

- src/init.cts: cmdInitManager and cmdInitCompleteMilestone now emit
  state_path/roadmap_path (workstream-scoped via planningDir(cwd),
  existence-checked, toPosixPath'd, null when absent -- identical to
  cmdInitPlanPhase's existing contract) and archive_dir (the milestone
  archive directory, composed the same way milestone.cts's already-correct
  archive helper does per #1911).
- autonomous.md: discover_phases and iterate now extract state_path via
  the already-fetched INIT_MANAGER payload instead of hardcoding
  `.planning/STATE.md`; iterate's second, previously-separate hardcoded
  read is folded into the same fence (no double-fetch); lifecycle step 5b
  checks the resolved archive_dir instead of a hardcoded milestones path.
- complete-milestone.md's reorganize_roadmap_and_delete_originals step
  (which previously called no init command at all) now fetches
  init.complete-milestone and uses the resolved roadmap_path/state_path/
  archive_dir for the backlog read, the write-guard sentinel's armed
  content, the Write-tool target for the reorganized ROADMAP.md (the
  sentinel fence now echoes the resolved path so the executing agent can
  see it), and the safety-commit --files list. `.planning/MILESTONES.md`
  and `.planning/PROJECT.md` stay literal root paths -- documented shared
  files, per the issue's explicit "not a blanket replacement" scope.

Regression tests extract and execute the real bash fences (with a stubbed
gsd_run) rather than string-matching the markdown, covering flat mode
(unaffected), an active workstream (the issue's own repro shape, now
correctly resolving), the no-double-fetch requirement, and a dedicated
guard locking MILESTONES.md/PROJECT.md as shared.

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

* docs(#4455): add changeset for workstream-scoped autonomous/complete-milestone fix

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

* fix(#4455): close write-guard gap on workstream-scoped curated paths

Isolated security review of the #4455 fix (workstream-scoped STATE/
ROADMAP/milestone-archive path resolution in autonomous.md and
complete-milestone.md) flagged that hooks/gsd-write-guard.js's
CURATED_PATTERNS only matched root-level .planning/ paths, never
.planning/[<project>/]workstreams/<ws>/... — meaning the catastrophic-
shrink guard silently never engaged for a workstream-scoped write.
This is directly relevant here: the #4455 change makes a workstream-
scoped ROADMAP.md Write reachable via complete-milestone.md's own
explicit sentinel-hatch instructions, which assume guard protection
that did not actually exist for that path shape. Extended
CURATED_PATTERNS with the three workstream-scoped equivalents;
consumeSentinelFor's own path-derivation logic needed no change since
it derives from the actual write target. Verified empirically (a
293->16 line workstream ROADMAP.md shrink now correctly returns
exit 2 / decision:"block") and with 5 new regression tests.

Also addressed a code-review nit on the core #4455 fix:
cmdInitCompleteMilestone called planningDir(cwd) three separate
times instead of caching it once.

Accepted as-is (not fixed): complete-milestone.md's
reorganize_roadmap_and_delete_originals step re-fetches
`gsd_run query init.complete-milestone` three times across its
fences rather than merging the first two (no state-changing Write
between them, unlike autonomous.md's iterate step which does merge).
This is an efficiency nit, not a correctness bug — merging risks
disrupting the step's prose flow and its existing binding test for a
non-functional gain.

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

* docs(#4455): add changeset for the write-guard workstream-scope fix

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

* fix(#4455): fix gsd-test-surfaced regressions from workstream-path fix

Running gsd-test against the full #4455 diff (including the write-guard
security fix and the cmdInitCompleteMilestone caching nit) surfaced four
real, non-flaky failures, all direct consequences of editing
gsd-core/workflows/autonomous.md and complete-milestone.md:

1. tests/autonomous-converge.test.cjs pinned the OLD hardcoded
   `STATE_CONTENT=$(cat .planning/STATE.md ...)` read in both
   discover_phases and iterate. That is exactly the literal-path
   behavior #4455 fixes, so the test needed updating to assert the new
   init.manager-resolved `STATE_PATH` read instead (with an explicit
   doesNotMatch guard against regressing to the old literal).

2. tests/workstream-scoped-paths.test.cjs's own "no-double-fetch" test
   counted gsd_run invocations via a shell variable incremented inside
   the stub function — but `INIT_MANAGER=$(gsd_run ...)` runs gsd_run
   inside the command-substitution SUBSHELL, so that increment never
   survives back to the parent shell and the counter always read 0.
   Switched to a file-based call log (one byte appended per call),
   which survives the subshell boundary.

3. tests/compact-content-partition-guard.test.cjs's disjointness check
   flagged the reorganize_roadmap_and_delete_originals step's new
   `INIT_CM=$(gsd_run query init.complete-milestone)` fetch (added 3x,
   per the accepted-as-is disposition in the prior commit) as
   byte-identical to a pre-existing, unrelated fetch already present in
   complete-milestone/detail/elaboration.md's handle_branches section
   (§2). Same idiom, same conventional variable name, coincidentally
   colliding across the spine/detail split boundary. Renamed the new
   step's local variable to INIT_REORG — a distinct, purpose-specific
   name is arguably better practice anyway for two logically unrelated
   fetches, and it removes the literal collision honestly rather than
   restructuring the split.

4. tests/benchmark-compact-content.test.cjs reported real byte-count
   drift in the committed baseline (autonomous.md and
   complete-milestone.md both grew from the #4455 content). Refreshed
   via `node scripts/benchmark-compact-content.cjs --write`.

Verified: node scripts/benchmark-compact-content.cjs --check now
reports the baseline up to date; a standalone invocation of
checkDisjointness() against the real repo state now reports zero
violations across all 6 registered splits; manual bash-fence execution
of both the autonomous.md iterate fence (call count = 1) and the
complete-milestone.md backlog fence (with INIT_REORG) confirms correct
behavior.

Emitted-Drift-Ack-Growth: autonomous.md — #4455 workstream-scoped STATE.md path resolution replaces hardcoded literal reads
Emitted-Drift-Ack-Growth: complete-milestone.md — #4455 workstream-scoped STATE/ROADMAP/archive path resolution replaces hardcoded literal reads
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* fix(#4455): MILESTONES.md/PROJECT.md/REQUIREMENTS.md are workstream-scoped too, and so is project-only mode

Fresh isolated code-review and security-review passes against the full
diff (run after the previous gsd-test-surfaced fixups landed) each
found one real, confirmed defect:

Code review: the safety-commit `--files` list and the REQUIREMENTS.md
`git rm` step both hardcoded `.planning/MILESTONES.md`,
`.planning/PROJECT.md`, and `.planning/REQUIREMENTS.md` as literal
root paths — but src/milestone.cts's cmdMilestoneComplete writes
MILESTONES.md via `planningPaths(cwd).planning` (the workstream base)
and PROJECT.md/REQUIREMENTS.md resolve the same way through
`planningPaths().project`/`.requirements` (src/planning-workspace.cts).
Only `todos` is the documented root-scoped exception (#4256); an
earlier version of this fix wrongly generalized that exception to
MILESTONES.md/PROJECT.md too, and the now-corrected test previously
enshrined that wrong behavior as intended. Under an active workstream,
the safety commit would have silently missed the actual files
`milestone complete` just wrote, and the git-rm step would have
targeted the wrong (root) REQUIREMENTS.md entirely. Fixed by exposing
`milestones_path`/`project_path`/`requirements_path` from
init.complete-milestone (src/init.cts) and resolving all three through
them, the same pattern already used for state_path/roadmap_path/
archive_dir. The four remaining literal MILESTONES.md/PROJECT.md
mentions elsewhere in complete-milestone.md (lines ~12-13, ~441, ~607,
~662) are display-only prose in status/summary message templates, not
actual file operations — left as-is; they are a cosmetic path-display
inaccuracy under an active workstream, not a data-integrity bug like
the two fixed here.

Security review: confirmed the write-guard fix from the prior commit
is correct and complete for workstream scoping, and independently
surfaced the same project-only gap the code-review pass above also
caught structurally: `CURATED_PATTERNS` had no pattern for
`.planning/<project>/...` (GSD_PROJECT set, GSD_WORKSTREAM unset) —
planningDir(cwd) supports that shape independently of workstream
nesting, so it is reachable, not hypothetical. Fixed by adding three
more patterns, verified empirically (a project-scoped 292->16 line
ROADMAP.md shrink now correctly returns exit 2 / decision:"block")
and with 6 new regression tests.

Verified: manual bash-fence execution of the corrected commit-files
and requirements-rm fences (both flat mode and GSD_WORKSTREAM=alpha)
resolves to the right paths in both cases; a standalone invocation of
checkDisjointness() against the real repo state still reports zero
violations; the benchmark baseline was refreshed again for the further
size change (already covered by the existing Emitted-Drift-Ack-Growth
trailer on complete-milestone.md two commits back — that trailer is
read over the whole merge-base..HEAD range, not per-commit, so it
still applies here).

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

* docs(#4455): backfill changeset PR numbers and correct final scope

pr: 0 -> pr: 4542 for both fragments, and updated both bodies to
reflect the final fix scope (MILESTONES/PROJECT/REQUIREMENTS are
workstream-scoped too, not shared-root exceptions; the write-guard fix
also covers project-only scoping, not just workstream nesting).

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

* fix(#4455): lifecycle-5b archive-path assertions use the fence's own separator, not path.join

PR CI's windows-latest shard 3/3 failed: "expected ls to find the root
archive file, got: ...\milestones-root/v1.0-ROADMAP.md". The
autonomous.md lifecycle step 5b fence composes the checked path with a
literal bash `/` (`"${ARCHIVE_DIR}/v${milestone_version}-ROADMAP.md"`),
which on Windows yields a MIXED-separator path — Windows backslashes
from archiveDir plus one trailing `/`. My test's assertion used
path.join(archiveDir, 'v1.0-ROADMAP.md') instead, which on a Windows
Node process produces an all-backslash path that never matches the
fence's mixed-separator output. Both assertions in that describe block
now mirror the fence's own literal `/` concatenation
(`${archiveDir}/v1.0-ROADMAP.md`) instead of path.join — matching the
style the other two describe blocks in this same file (safety-commit
--files list) already used correctly for the identical archive-dir
pattern, so this brings the one outlier into line rather than
introducing a new idiom.

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

* fix(#4455): write-guard sentinel comparison now realpath-resolves the token, not just the target

PR CI's macos-latest full-test shard 2/3 failed a #4455 test: "the
sentinel hatch ... unblocks a workstream ROADMAP.md write" got status
2 (still blocked) instead of 0.

Root cause, unrelated to the Windows fix in the previous commit:
hooks/gsd-write-guard.js's main flow realpath-resolves the Write
TARGET before the curated-pattern match (round 9 Minor 1's
symlink-before-match fix, `filePath = fs.realpathSync(filePath)`), but
consumeSentinelFor resolved the sentinel TOKEN's absolute path via
plain path.resolve() with no realpath step. On macOS, os.tmpdir()
resolves through a /var -> /private/var symlink, so a test's cwd
(lexically under /var/folders/...) and its realpath'd target
(/private/var/folders/...) diverge — an armed, correct sentinel then
never matches the realpath'd target string, and the guard stays
incorrectly blocked. This is not macOS-specific in principle: ANY cwd
sitting under a symlink (a symlinked project checkout, a symlinked
worktree) hits the same asymmetry — gsd-test's Linux bench runs never
caught it because /tmp there is not a symlink.

Fixed by applying the same fs.realpathSync (with the same
keep-lexical-on-failure fallback the caller already uses) to the
token's resolved path before comparing. The named file is already
known to exist at this point (the caller only reaches consumeSentinelFor
after successfully reading the target), so realpath is expected to
succeed in the legitimate case; a garbage/mismatched token still fails
safe (verified — falls back to the lexical path, still mismatches,
stays blocked).

Verified: reproduced the exact bug locally (macOS) via os.tmpdir()
before the fix, confirmed it resolves after; the negative case
(sentinel armed for a DIFFERENT file) still correctly blocks; the
pre-existing relative-token sentinel tests (predating #4455) still
pass; a garbage/non-existent token still fails safe. Added a
deterministic, cross-platform regression test using an explicit
symlink (skipped on Windows, matching the existing round-9 symlink
test's own skip condition) so this class of bug is caught by
gsd-test's Linux bench too, not only by a real macOS CI run.

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

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-08 04:56:11 -04:00
Tom Boucher
78013b3b74 fix(#4447): classify mixed structural+transient planning commits as a 5th arm (#4537)
* fix(#4447): classify mixed structural+transient planning commits as a 5th arm

pr-branch.md's analyze_commits step computed only NON_PLANNING and
STRUCTURAL per commit -- never a total planning-file count -- so its four
classification arms assumed every planning-only commit was either wholly
structural or wholly non-structural. A commit touching both a structural
.planning/ path and a transient/other one matched no arm, and the
ambiguous prose let an LLM executing the workflow silently drop it,
breaking STATE.md's per-commit revision chain in default mode.

Adds an explicit PLANNING_COUNT variable and rewrites the four arms into
five, each with an exact computable condition. The new "mixed planning
commit" arm (structural + transient/other, no code) gets the same
treatment mixed code+planning commits already get: INCLUDE, relying on
create_pr_branch's existing universal per-commit filter to strip the
transient/other paths -- no new filtering logic needed.

tests/helpers/pr-branch-filter.cjs's classifyCommit already returned
'include' for this shape (no upper bound on its structural check); the
defect was entirely in the workflow's own prose spec, which is what an
executing agent actually reads. New tests pin both: classifyCommit's
already-correct behavior (tests 49-50), and a failing-first assertion
that analyze_commits computes an explicit planning-total signal (test
51, fails against the pre-fix text).

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

* fix(#4447): address code-review findings on the mixed-planning arm

- Correct the mixed-planning arm's prose: create_pr_branch's universal
  filter only strips the TRANSIENT_DIRS subset, not the "other" bucket
  (config.json, intel/, etc.) -- that subset is preserved, not filtered,
  same as default mode already does for it on any commit.
- Fix the "Mixed planning commits" display line to use the same
  mode-conditional bracket form as "Structural planning commits" --
  it was hardcoding "included" even though the arm is EXCLUDE in strict
  mode, which would have misled a strict-mode user.
- Tighten test 51's regex from unanchored /PLANNING_COUNT=/ to
  /^PLANNING_COUNT=\$\(/m so it requires the real shell-assignment
  shape, not just the substring appearing anywhere in prose.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Emitted-Drift-Ack-Growth: pr-branch.md — growth is this PR's own #4447 fix (5th classification arm with explicit computable conditions), not incidental drift

* fix(#4447): bound test 51's regex quantifier (local/no-unbounded-quantifier)

lint:ci flagged the unbounded [\s\S]*? over readFileSync content as a
catastrophic-backtracking risk (CWE-1333 class). Bounded to {0,20000},
comfortably larger than the analyze_commits step's actual size.

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

* docs(#4447): add changeset for the pr-branch mixed-planning classification fix

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

* fix: eliminate SIGPIPE race in gsd-validate-commit.sh subject/config extraction

Discovered while verifying an unrelated PR (#4447): tests/hooks-opt-in.test.cjs's
"a git-GENERATED subject is never measured against the supplied message
(round 7)" test intermittently got r.status===141 instead of the expected 2
for the --fixup=HEAD case, on a run where the identical code had passed
cleanly moments earlier -- confirming a timing race, not a deterministic
bug in the test's own assertions.

Root cause: gsd-validate-commit.sh runs under `set -euo pipefail` and
extracted the commit subject via `SUBJECT=$(echo "$MSG" | head -1)` (two
call sites) and the opt-in ENABLED flag via `$(printf '%s\n' "$CONFIG_OUT"
| head -1)`. `head -1` closes its read end as soon as it has one line; a
real commit message or multi-command-type CONFIG_OUT is multi-line, so the
writer can receive SIGPIPE (exit 128+13=141) if its write lands after that
close. Under pipefail this is NOT suppressed -- it aborts the whole hook
instead of the intended exit-2 rejection.

Fix: replace both patterns with pure bash parameter expansion
(`${VAR%%$'\n'*}`) -- zero subprocesses, zero pipe/race surface, and
behaviorally identical to `head -1` for single-line, multi-line, and
trailing-newline input (verified directly). The third similar pipe
(`tail -n +2` feeding a `while read` loop that drains to EOF) is a
different, race-free shape and was left alone.

Regression test is a static, by-construction assertion (per this repo's
policy against forcing scheduling races to reproduce deterministically):
the vulnerable pipe patterns must be absent from the shipped script, and
the parameter-expansion forms must be present.

This overrides one-concern-per-PR per CLAUDE.md's Defects & Warnings
policy -- a genuine defect discovered mid-work is fixed inline, not
deferred to a separate issue.

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

* docs: add changeset for the gsd-validate-commit.sh SIGPIPE race fix

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

* fix: harden SIGPIPE-race regression test against reformatted reintroduction

Code review found the test's original exact-string regexes would miss a
cosmetically-reworded reintroduction of the same dangerous head-1 pipe
(extra whitespace, an appended 2>/dev/null). Broadened to content-tolerant
but still $(...)-wrapped regexes (bounded quantifiers per
local/no-unbounded-quantifier) -- verified against both the current file
(no false positive, including the fix's own explanatory comments that
quote the bare unwrapped pattern in prose) and a synthetic reformatted
reintroduction (correctly caught).

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

* docs(#4447): backfill changeset PR number

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

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-08 00:19:03 -04:00
Tom Boucher
38e4ce5f62 fix(#4186): anchored status vocabulary, record-session arg guard, recount pin (#4381)
* fix(#4186): anchored status vocabulary, record-session arg guard, recount pin

Three defects from #4186:

1. normalizeStateStatus ran a first-match-wins SUBSTRING chain over the
   free-prose body Status field, so prose merely mentioning a status word
   was silently rewritten to a credible wrong token (a .planning/ path in
   Italian prose -> status: planning; verifica -> verifying; completezza ->
   completed). Recognition is now an ANCHORED whole-field match against a
   declared vocabulary (STATUS_EXACT_TOKENS + STATUS_ANCHORED_PATTERNS,
   state-document.cts) — case/whitespace-tolerant, branch-order artifacts
   preserved (Planning complete -> planning; Phase complete — ready for
   verification -> verifying). The recorded lenient fallback (#3873 row 26)
   stands: unrecognized prose passes through verbatim. Read-side consumers
   (W011, statusline) ride the same function.

2. The progress recount skew (stray *-SUMMARY.md inflating
   completed_plans) is already dead on next via #1988/PR #2016
   (countMatchedSummaries pairs summaries to plans) — verified live and
   pinned with regression rows composed against the #4129/#4359 ratchet.

3. state record-session with no args executed and wrote STATE.md; it now
   errors like state update (stopped-at or resume-file required), handler-
   side so SDK callers are covered too. Four tests pinning the bare-call
   write are updated to the new contract.

* fix(#4186): update status pins to the anchored vocabulary contract

Bench round 1 follow-ups:

- Legacy bare 'Milestone complete' kept as reader-side vocabulary
  (ADR-2207 removed the writers, not recognition of legacy files).
- state.test pins updated: 'Paused at Plan 3' and round-trip
  'Executing Plan 5' were pins of the substring guessing itself —
  the round-trip now uses the real handler form 'Executing Phase 5'.
- record-session no-op/no-fields tests repurposed to the usage-error
  contract (CLI + SDK-level ExitError), byte-unchanged assertions kept.
- statusline tests repinned: vocabulary values collapse to keywords;
  narratives render the documented first-word fallback instead of a
  guessed token. Hook doc comment updated to match.
- docs-guard exempt baseline: state.test.cjs now cites docs/CLI-TOOLS.md.
- docs/CLI-TOOLS.md: record-session signature notes the required flag.

* fix(#4186): repair a dangling sentence in the schema docstring

* test(#4186): bound the completed_plans scan regex (#2128 class)

* chore(#4186): backfill changeset PR number

---------

Co-authored-by: sim <sim@local>
2026-09-06 17:08:24 -04:00
Tom Boucher
4e1c449281 enh(#3811): add hooks.commit_types config surface to gsd-validate-commit (#4340)
* enh(#3811): add hooks.commit_types config surface to gsd-validate-commit

Extends the opt-in Conventional Commits hook with a hooks.commit_types
config array that adds project-specific types to the 10 built-ins
without replacing them. Configured values pass a safe-token filter
before reaching the compiled regex, so a config entry can never alter
the pattern's structure. The regex alternation, the human-readable
error text, and a new typed valid_types JSON field all derive from one
list instead of the two hand-synced copies this replaces.

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

* chore(#3811): backfill changeset PR number

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

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-05 18:35:09 -04:00
Tom Boucher
d9d16551b7 fix(#4091): publish update-check cache via atomic temp+rename (#4313)
* test(#4091): RED — worker cache write must be rename-atomic

Structural regression guard: gsd-check-update-worker.js must not write the
shared per-package cache in place; assert temp+rename publish shape plus a
behavioral no-residue e2e.

* fix(#4091): publish update-check cache via atomic temp+rename

writeFileSync on the shared per-package cache truncates before writing, so
concurrent cross-runtime readers (statusline/banner) could see a torn or
empty record. Stage under a unique same-directory temp and rename into
place — POSIX rename(2) is atomic, so readers see the old or new record,
never a partial one. Degrade policy (#3582) unchanged: errors swallowed,
temp best-effort removed.

* refactor(#4091): hoist temp path, tighten uniqueness assertion (review)

* changeset(#4091): add fragment (pr backfill to follow)

* changeset(#4091): backfill PR 4313

---------

Co-authored-by: sim <sim@local>
2026-09-05 09:22:10 -04:00
allcounter
723ea08dc2 fix(#4016): imperative-override injection patterns tolerate filler words (#4061)
* fix(#4016): imperative-override patterns tolerate filler words

The narrow imperative-override family tolerates no filler between the
verb and the noun, so a planted "Forget all of your instructions"
(measured in a real public transcript) matched none of the 14 patterns
and both consuming hooks stayed silent.

One combined filler-tolerant pattern is appended; the narrow four stay
untouched to keep the change merge-friendly. Known trade-offs, disclosed
in #4016: linter-doc prose like "ignore rules on a single line" now
trips a LOW advisory, and the overlap with the narrow patterns means one
sentence can count twice toward severity thresholds.

Regression tests assert the previously-missed phrasings fire in BOTH
consuming hooks (gsd-prompt-guard and gsd-read-injection-scanner), not
just in the raw pattern list, per the agent brief in #4016.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015aGr6fvmDMLznT7TvTXrsb

* chore(#4016): changeset fragment for PR #4061

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015aGr6fvmDMLznT7TvTXrsb

* test(#4016): pin the disclosed linter-doc FP as single-pattern LOW, never blocking

Review follow-up on PR #4061: the combined filler-tolerant pattern's
disclosed false-positive class (linter-doc prose such as "use
eslint-disable-next-line to ignore rules on a single line") was
documented in prose only. Two tests now pin it:

- the prose matches exactly ONE shared pattern (the #4016 combined
  pattern, not a narrow one), so it cannot silently start double-counting
  toward the 3+ HIGH threshold;
- through the real gsd-read-injection-scanner subprocess with
  security.injection_blocking=true, the prose yields a single-finding
  LOW advisory and no block decision — with an in-test positive control
  proving a 3+-pattern payload DOES block in the same directory, so the
  non-blocking assertion cannot pass vacuously.

Samples are fragment-built like the existing SAMPLES rows so this file's
own diff does not trip the CI injection scanner.

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

* fix(#4016): replace the five narrow imperative-override patterns with one superset

The first cut appended a filler-tolerant combined pattern next to the five
narrow verb patterns. Both consumers count one finding per matching pattern
toward the severity threshold, so the overlap made one sentence count twice:
"Ignore previous instructions. Forget your instructions." scored 2 (LOW) on
next and 3 (HIGH, blockable) on the branch. It also left `override` out of
the combined pattern.

Replace the narrow family (ignore x2, disregard, forget, override) with ONE
superset pattern over ignore|disregard|forget|discard|override. At least one
filler (all|of|the|your|my|system|previous|prior|above|earlier) must sit
between verb and noun, enforced by a lookahead with no repetition; the two
noun-less/bare forms the old list accepted (`disregard (all) previous`,
`forget instructions`) are kept as explicit tails so the new pattern is a
strict superset. Bare "override rules" / "ignore instructions" are ordinary
repo prose (6 measured hits across docs and source) and stay unmatched.

Corpus measurement over 3019 .md/.js/.cjs/.mjs files (injection-sample tests
excluded): the old family hit 2 lines, the new pattern hits 3, the only new
one being a documented injection example in planner-reversibility.md that
the old family missed (the issue's own class).

Tests: SAMPLES reshaped to the 10-entry list; superset proof table (17 legacy
phrasings, each matching exactly one pattern); five issue phrasings including
`override all of your previous instructions` counted exactly once through
both hook subprocesses; double-count regression (1 finding, LOW); design pin
that bare verb+noun matches nothing; linter-doc FP pin split into bare
(silent) and determined (single LOW, never blocks). All fragment-built; the
CI prompt-injection scanner reports 0 findings on every touched file.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012rvqL1wk6s8dQEXsFm4RB1

* chore(#4016): changeset body in the canonical bold-lead format

.changeset/README.md Format: a leading bold change sentence, then an em-dash
explanation. Also drops the verbatim planted phrase from the body so the
rendered CHANGELOG line does not trip the pattern it describes.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012rvqL1wk6s8dQEXsFm4RB1

* fix(#4016): render a bounded pattern label in the prompt-guard advisory, pin plural prompts

Review round 4 of PR #4061 left two nits open.

1. gsd-prompt-guard.js pushed `pattern.source` verbatim into its typed
   finding and, through renderFinding, into the user-facing advisory. With
   the #4016 superset pattern that source is 300 characters, so a genuine hit
   surfaced an advisory dominated by a raw regex dump. The read scanner has
   trimmed its equivalent since #3523 (`\s+` -> `-`, strip `()\`, cut at 50).
   That transform is hoisted into hooks/lib/injection-patterns.js as
   `describePattern` and used by BOTH hooks, so one finding renders the same
   label everywhere. Byte-identical to the scanner's old inline output for
   all 10 patterns (measured). No new staging dependency: both hooks already
   require this module.

2. The noun alternation `prompts?` had no positive coverage for the plural
   branch. One filler-regression row now exercises `... previous prompts ...`
   and runs through the existing once-per-hook, exactly-one-pattern loops.

The parity test's prompt-guard count assertion moves off substring-matching
the advisory prose onto the typed `findings` surface added in #3546, per
CONTRIBUTING's raw-text-matching prohibition. New test: the superset source
exceeds the bound (positive control), the prompt guard never embeds it, and
both hooks carry the identical label in `findings[0].match`.

Tests: parity, read-scanner, kimi field-shadowing, prompt-injection-scan,
hooks-crash-policy, dead-exports: 206 run, 196 pass, 0 fail, 10 pre-existing
platform skips. eslint clean; changeset lint ok; hooks runtime-build-seam lint
ok; the CI prompt-injection scanner reports 0 findings on the PR diff.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016GGp8kEB5zCDmJ6TYHP1Nj

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-09-05 06:58:45 -04:00
Behruz Nassre Esfahani
5d804dd287 fix(#3709): clear the context-monitor warn sentinel on PreCompact (#3808)
* fix(#3709): clear the context-monitor warn sentinel on PreCompact

The monitor's per-session warn sentinel survived a compaction, so once the
first CRITICAL of a session had fired, `lastLevel` stayed pinned at 'critical'
for the rest of the run. The hook was already wired to PreCompact (#772), but
read the event only at the very END, and solely to pick an output envelope.

Two documented behaviours died as a result:

  - "First warning always fires immediately" — the first warning of the
    post-compaction cycle was debounced instead.
  - "Severity escalation (WARNING -> CRITICAL) bypasses debounce" — computed as
    `lastLevel === 'warning'`, which can never be true again, so every later
    CRITICAL waited out the full five-tool-use debounce, exactly when an
    immediate warning matters most.

`criticalRecorded` was equally sticky: a session that compacted and later truly
ran out kept a /gsd:resume-work breadcrumb (#1974) describing the earlier
near-miss rather than the exhaustion that ended the run.

Reproduced first, with the issue's own literal repro, including the detail that
the compaction consumed a debounce slot (callsSinceWarn 0 -> 1).

The reset runs BEFORE the metrics read, deliberately: a post-compaction reading
is healthy again, so the ENOENT / stale / above-threshold branches would all
exit first and never reach it. Returning early also stops the compaction from
eating a slot of the cycle it was meant to restart. The event name is now read
once through a shared `readEventName()` helper, so this reset and the #2289
output allowlist cannot drift on what counts as "no event name".

Seven rows against a real sequence (the defect is state carried ACROSS calls, so
they need their own driver — the existing helpers delete the sentinel after each
invocation). Reverting the reset turns SIX of them red; the seventh is the
non-vacuity row asserting a NON-compaction event must not clear the sentinel,
which correctly passes either way.

AC4 initially passed with and without the fix — asserting `criticalRecorded ===
true` is vacuous when the seeded stale sentinel already carries it. It now seeds
a `staleProbe` marker that can only survive if the sentinel survives, so its
absence is what proves the state was rebuilt.

hooks/dist/ is gitignored and regenerated by build:hooks, so no committed dist
copy needs syncing.

Verified: `npm run lint:ci` exit 0; acceptance criteria 1-6 driven end-to-end
against the real hook.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(#3709): reset ahead of the config gate, and pin the placement itself

Codex review of the #3709 fix, before opening the PR. Three findings, all in
this change's own new code.

1. `context_warnings: false` prevented the reset. The config early-exit sits
   ABOVE where the reset was placed, so a session that disabled warnings,
   compacted, then re-enabled them mid-session resurrected the stale sentinel
   and the original bug with it. Config is re-read per invocation, so that
   sequence is supported rather than hypothetical. The reset now runs ahead of
   the config gate: clearing the sentinel is CLEANUP, not a warning — state that
   must not outlive a compaction should not outlive it merely because warnings
   are switched off right now. It cannot emit anything from there, so the
   disabled contract is untouched.

2. Nothing pinned the "before the metrics read" placement. Every row wrote a
   fresh metrics file, so the reset could have been moved below the metrics
   read, the stale check, or the healthy-threshold exit with all seven rows
   still green — while a REAL PreCompact, which carries no fresh metrics and
   follows a recovery to healthy usage, silently kept its sentinel. Three rows
   now pin it: no metrics file at all, usage recovered to healthy, and warnings
   disabled. Each catches a distinct wrong placement — moving the reset below
   the config check reds the third; below the metrics read reds all three.

3. The absent-sentinel row proved nothing. `assert.doesNotThrow` was vacuous
   because the driver caught every child exit, so a hook that exited 1 on the
   ENOENT unlink would still have passed. The driver now returns the exit code
   and the row asserts it is 0.

Also corrected the `readEventName` comment: it said the event is "read once",
which is not literally true — there are two call sites. The point is one
DEFINITION of what counts as an event name, so the reset and the #2289
allowlist cannot drift; the comment now says that.

Verified: 60 rows in tests/perf-317-context-monitor-fs.test.cjs, 0 fail, with
both placement mutations driven to red and reverted.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* chore(#3709): backfill changeset pr number

The fragment shipped with the documented `pr: 0` placeholder, which the
changeset lint treats as always-silent, because the PR number does not exist
until the PR is opened. Backfilled to 3808 now that it does.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(#3709): a compaction clears the stale reading too, not just the state

Review round 1. Major 1 was right and it mattered: clearing only the sentinel
traded a warning that never fires for one that fires when it must not.

The statusline bridge still holds the PRE-compaction reading, and STALE_SECONDS
is 60, so for up to a minute it still reads fresh and still says the context is
exhausted. With the sentinel gone, firstWarn is true, so the next PostToolUse
emitted a spurious CONTEXT CRITICAL immediately after the compaction that FREED
the context — and flipped criticalRecorded, spawning a false context-exhaustion
breadcrumb. That is the same breadcrumb inaccuracy #3709 exists to fix, re-entered
from the other side. Reproduced before fixing, exactly as the review described.

A compaction now invalidates the warning state AND the reading that produced it.
Removing the bridge loses nothing: the statusline owns that file and rewrites it
on every render, and its absence is already the "no reading yet" state a fresh
session starts in, which exits silently.

Two things my own verification caught while fixing it:

  - The first attempt did NOTHING. metricsPath was declared below the PreCompact
    block, so referencing it hit the temporal dead zone, threw, and the outer
    catch swallowed it into a silent exit 0. The probe still printed "silent",
    which looked like success but was the old debounce. metricsPath is now
    hoisted beside warnPath.

  - The new Major 1 row was VACUOUS. The driver's `metrics: false` DELETES the
    bridge, but the defect is a bridge that is still there and still reads fresh,
    so the row passed on the ENOENT early-exit rather than on the fix. Only the
    sentinel-only mutation exposed it. The driver grew a `metrics: 'keep'` mode
    that leaves the stale file in place; both Major 1 rows now red under that
    mutation.

Also from the review:
  - Minor 1 — the compaction-abort path is now stated in the source rather than
    left silent, including why a conditional reset (SessionStart source "compact")
    is out of scope for this fix.
  - Minor 2 — docs/context-monitor.md completed: PreCompact wiring and the early
    return under How It Works, a table of all three things the reset clears, the
    breadcrumb guard, the warnings-disabled interaction, and the never-block
    property under Safety.
  - Minor 3 — changeset trimmed from ~1,400 chars of implementation narration to
    the user-visible change.
  - Nit 1 — a failed unlink (Windows EPERM/EBUSY) no longer leaves the bug
    silently intact: the file is neutralised in place instead, with a shape safe
    for each (an empty sentinel, a timestamp-0 bridge).
  - Nit 2 — reviewer-process narration removed from shipped test source. The
    remaining "Codex" mentions are pre-existing and name the RUNTIME.
  - Nit 3 — the debounce-slot row now asserts the observable consequence (the
    first post-compaction warning fires) rather than repeating AC1's assertion.
  - Nit 4 — the file docblock now lists the folded-in blocks and asks the next
    contributor to extend it.

Verified: `npm run lint:ci` exit 0.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(#3709): the unlink-failure fallback truncates to empty, matching deletion

The fallback wrote well-formed neutral values, and neither was equivalent
to the deletion it stood in for: '{}' parses, so firstWarn was false and
the first post-compaction warning was debounced — AC2 undone on exactly
the path the fallback exists for — and '{"timestamp":0}' was never stale
(the guard is `metrics.timestamp && ...`), so the flow reached emit with
remaining === undefined and injected a literal 'Usage at undefined%'.
Truncating to '' makes JSON.parse throw on both reads: the sentinel read
keeps firstWarn true, the bridge read falls to the outer catch and exits
0 silently (review of #3808, Blocker 1).

The branch is now executed for real: an EPERM is injected into the
child's fs.unlinkSync via --require preload — method monkeypatching,
never chmod 0o000, which root bypasses under Docker/CI (Blocker 2). Both
rows proved failing-first against the neutral-value fallback. The
boundary trios at WARNING=35 / CRITICAL=25 are completed on the emit
path with 34, 26, and 24 (Major 3); 36/35/25 were already pinned.

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

* fix(#3709): the truncation fallback refuses to follow a planted symlink

The per-session files live in a shared sticky tmpdir, where an unlink
failing EPERM is exactly what another user's planted file produces — and
a planted SYMLINK would make the fallback's plain truncating write empty
out its TARGET, weaponising the hook against any file its own user can
write. Open with O_WRONLY|O_TRUNC|O_NOFOLLOW instead: a symlink fails
ELOOP into the same give-up arm. On Windows the constant is absent and
'|| 0' keeps the fallback alive there, where the held-handle case it
exists for occurs and temp dirs are per-user. Found by Codex review;
the new row proved failing-first against the writeFileSync fallback
(victim file truncated to zero bytes).

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

* fix(#3709): refuse non-regular files everywhere, not only where O_NOFOLLOW exists

Codex round 2: '|| 0' removed the no-follow protection exactly where it
cannot be expressed as an open flag — Windows, whose tmpdir is NOT
guaranteed per-user (TEMP/TMP overrides, system-temp fallback). An
lstat isFile() guard now rejects symlinks and every other non-regular
shape on all platforms before the truncating open; O_NOFOLLOW stays, as
the lstat->open substitution-race backstop where the platform has it.
The symlink row additionally asserts the planted link SURVIVES the call,
so a preload match that stops engaging can no longer pass the row
vacuously off a successful unlink.

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

* test(#3709): tolerate the Windows give-up, still outlaw neutral values

Both windows-latest CI lanes fail the two EPERM rows deterministically:
the runners hold freshly written files with a share mode that allows
DELETE (every real-unlink row passes) but refuses a truncating
write-open, so the fallback's give-up arm engages — which is the
fallback working as designed, not the defect the rows exist to catch.
The rows are now platform-aware: POSIX still requires exact truncation
and the behavioural follow-ons; Windows accepts truncated-or-untouched
but still rejects the Blocker-1 regression class (a parseable neutral
value is never legal anywhere), with the follow-ons gated on the
truncation actually landing. Also corrects the hook comment: libuv
defines O_NOFOLLOW as 0 on Windows — a no-op, not an absent constant.

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

* fix(#3709): a compaction watermark closes the window bridge deletion only narrowed

Round-3 Major 1: the statusline is an uncoordinated process that
re-writes the bridge on every render, so a render landing between the
PreCompact clear and the compaction's completion re-created the
PRE-compaction reading under a CURRENT timestamp — past STALE_SECONDS,
into a spurious post-compaction CRITICAL and a false exhaustion
breadcrumb: the exact failure the deletion was added to prevent.
PreCompact now also writes claude-ctx-<id>-compacted.json ({at}) and the
metrics read drops any reading not STRICTLY newer than it — which also
covers unstamped/zero timestamps once a compaction happened. Written
unlink-then-O_EXCL so a planted file or symlink is never followed;
failure degrades to the old narrowing. Docs and changeset now describe
the watermark instead of overclaiming for the deletion.

Round-3 Major 2: DEBOUNCE_CALLS and STALE_SECONDS get their trios — the
gate increments BEFORE comparing, so seeds 3/4/5 pin 4-debounced,
5-emits, 6-emits; ages 59/60/61 pin the strict >. The child's clock is
pinned via a --require preload (a wall-clock boundary row would flip on
one second of startup delay). timestamp-0's falsy bypass is pinned
directly as characterized behaviour. Mutation-proven: dropping
O_NOFOLLOW, <= for <, and >= for > each red exactly one row.

Minors: the symlink row's comment now names the lstat guard it actually
pins, and a preload-blinded-lstat row drives the O_NOFOLLOW substitution
-race backstop for real (3); absence assertions use warnRaw so a
corrupt leftover cannot pass as deleted (4); the Windows give-up is an
explicit t.skip, never a silent if (5); readEventName is total via
String(), keeping #2289's side-effects-always-run contract for
malformed event names, with a row (6); the PreCompact rationale lives
once in docs/context-monitor.md with the code keeping only line-level
constraints (9); the changeset is release-note-sized (10).

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

* fix(#3709): the grace window covers the compaction's duration, not just its start

Codex on the first watermark cut: the watermark stamps the compaction's
START, so a statusline render one second later — still mid-compaction,
still the old reading — passed 'strictly newer' and re-fired the false
CRITICAL. Readings inside COMPACT_GRACE_SECONDS (60) past the watermark
are now dropped: the window covers the compaction's own duration, a
healthy reading dropped there behaves identically to an accepted one
(it exits above-threshold anyway), and a genuine exhaustion warning is
delayed at most one window after a compact. A watermark stamped ahead
of the reader's clock is ignored — a clock step backwards or a stray
file must degrade to plain staleness, never mute the monitor
indefinitely. Both proven failing-first.

readEventName is strict about TYPE, not coerced: String() rendered
['PreCompact'] as 'PreCompact' and would run the reset off a malformed
payload. typeof: every non-string is 'no event' — silent, side effects
intact — with rows for the number, hostile-object, and array-wrapped
cases. The lstat-claim preload arm now writes an engagement marker the
substitution-race row asserts on, so a match string that silently stops
matching can no longer let the row pass off the real lstat guard.

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

* chore: retrigger CI — the previous wave was cancelled by an Actions outage, zero job failures

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

* fix(#3709): drive the compaction rows on the clock, not on a future stamp

Round-4 review raised three majors, all in the test scaffolding around the
fix rather than in the fix itself.

Major 2 (taken first — it is the cheapest and it unblocks Minor 6): call()
passed process.env to the child unmodified, so two rows depended on ambient
GEMINI_API_KEY. The preserved Gemini fallback is `eventName === "" &&
!!process.env.GEMINI_API_KEY`, and readEventName returns "" for every
malformed name, so with the key set the malformed-event row's `stdout === ''`
assertion failed outright — reproduced by running it under GEMINI_API_KEY=x.
call() now takes an explicit env, the way the sibling runMonitor helper in
this file always has, and both rows pin the variable unset. (The array row
survived an ambient key only because its reading was debounced — incidental,
not independence, so it is pinned too.)

Major 1: the AC2/AC3 rows drove the hook with a bridge stamped 62 seconds in
the FUTURE — a shape hooks/gsd-statusline.js cannot produce, since it always
stamps Math.floor(Date.now()/1000) on the same clock. They proved "the
sentinel was cleared" while their assertion messages claimed the documented
immediate-warning behaviour, which is gated behind the grace window and went
unexercised. Both rows now run the real sequence on the clock-pinning preload
this PR already added for the STALE trio: PreCompact at a fixed instant, then
a normally-stamped render one second past the window. Verified non-vacuous —
stubbing the sentinel unlink reds both.

Major 3: COMPACT_GRACE_SECONDS, the one constant this PR introduces, was the
only threshold without a limit-1/limit/limit+1 trio, in a PR that adds full
trios for four pre-existing ones. The seeded offsets were +0, +1 and +61; the
boundary itself (+60) and limit-1 (+59) were untested. Added, driven by
advancing the reader's clock rather than post-dating the reading, so the
reading is never ahead of the reader and only the grace gate can drop it.
Verified against three mutations — `>` to `>=`, the constant to 59, and the
constant to 61 — each of which reds exactly one row of the trio.

No production code changed. Verified: 85/85 in this file, lint:ci exit 0,
and the two Minor-6 rows now pass under GEMINI_API_KEY=x as well as unset.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EAbQy7n4mLMB7h3TnZ8GdG

* fix(#3709): harden the watermark read and pin the thresholds it introduces

Codex review of the full PR found four majors. All reproduced here against
the real hook before fixing.

MAJOR — the watermark was write-hardened but read-untrusted. PreCompact
already refuses to follow or overwrite a planted object (unlink-then-O_EXCL),
but the read was a bare readFileSync, so anything the write side gave up on
was followed by every later invocation. In a shared sticky os.tmpdir() that
is a mute primitive — a planted recent watermark suppresses monitoring — and
a symlink to a FIFO stalls a synchronous read. Measured against the
pre-hardening file: a symlink to a planted watermark WAS honored and muted
the monitor. The read now uses the same lstat + O_NOFOLLOW pair the sentinel
path uses, plus a size bound; symlink, directory and oversized cases are all
refused, with a plain-file control proving watermarks still work.

MAJOR — the `now + 5` skew tolerance was an unnamed, untested threshold. It
is now WATERMARK_SKEW_SECONDS with a +4/+5/+6 trio, verified against two
mutations (`<=` to `<`, and the constant to 6), each of which reds one row.
This is the same class as round 4's Major 3, one layer up.

MAJOR — the malformed-event row shared one session across both subcases, so
the hostile-object iteration's `assert.ok(s.warn())` passed off the sentinel
the `42` iteration left behind. A regression throwing before the bookkeeping
would have kept it green — vacuous for exactly the subcase it exists for.
Fresh session per subcase, with an explicit no-sentinel precondition.

MAJOR — the stale-reading row's non-vacuity is an artifact of call()'s future
stamp: with a production stamp the watermark suppresses the same reading, so
the row cannot isolate bridge deletion. The two guards genuinely overlap
inside the window, so no end-to-end row can separate them; the comment now
says so and points at the direct pin (s.metrics() === null) instead of
claiming an isolation it does not have.

Docs corrected where measurement contradicted them: the window NARROWS the
race rather than covering the compaction's duration, and the delay is not
bounded by the window alone — first recovery is watermark+61s with no skew
but watermark+66s at the accepted +5s skew. Aborted compactions are muted
the same way. The truncation fallback is documented as best-effort, which is
what the code and the Windows rows already do.

Verified: 89/89 in this file, lint:ci exit 0, symlink/directory/oversize all
refused where the pre-hardening file honored them, both new trios
mutation-checked.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EAbQy7n4mLMB7h3TnZ8GdG

* fix(#3709): move the PR's two new exits onto the declared-policy vocabulary

#3911 / ADR-3889 migrated this hook off raw process.exit() while this PR was
in review, replacing every exit with hooks/lib/hook-exit.js's allow(), which
forces each call site to name its crash policy. The PreCompact reset and the
watermark gate are added by THIS PR, so they did not exist to be migrated and
came through the merge as the only two raw exits left in the file — caught by
the new local/require-registered-exit rule. Both are ALLOW: a compaction is
never blocked by this hook, which is the policy the rest of the file declares.

Caught only in CI, not locally: `npm run lint` runs eslint with --cache, and
the cached entry for this file predated the new rule, so a warm local cache
reported clean. Re-verified with the cache cleared.

allow() terminates rather than throwing, which matters for the watermark call
site because it sits inside a try/catch — a throwing helper would unwind into
that catch and silently drop the grace-window mute. Verified behaviourally,
not by reading: the grace trio, the skew trio and the non-regular-file rows
all still pass.

Verified: lint:ci exit 0 with a cold eslint cache, full suite exit 0.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EAbQy7n4mLMB7h3TnZ8GdG

* fix(#3709): harden the routine sentinel writes and the read beside them

Round 7 ruled that the three routine debounce-accounting writes to the warn
sentinel must match the three writes this PR already hardened: leaving the
fourth unhardened beside them is the asymmetry that invites the defect back.
They now go through one writeSentinel() helper using the compaction
watermark's own unlink-then-O_EXCL shape, rather than a second policy — the
unlink removes any existing object, and O_EXCL then refuses to create through
one, so a write can only land on a fresh regular file this process made.

The routine READ beside them was the last bare readFileSync on warnPath, and
the same rationale applies to it verbatim; the watermark's read was hardened in
round 4 for exactly this reason. Same lstat + O_NOFOLLOW + size bound. Its
scope is stated in the test rather than overclaimed: lstat establishes that the
sentinel is a plain regular file, not that it is trustworthy, so a cross-owner
regular file at the predictable path is still read and is left as a disclosed
pre-existing residual.

Also fixes an accept-direction regression this PR introduced and six rounds of
review missed. readEventName collapsed an ABSENT event name and a MALFORMED one
onto the same '', and the preserved Gemini fallback keys off eventName === "",
so with GEMINI_API_KEY set a malformed payload began emitting an AfterTool
envelope. At the merge-base, data.hook_event_name.trim() threw on a truthy
non-string after the side effects and nothing was ever emitted. Measured
base-vs-head with a fresh sentinel per run: 42, ['PreCompact'] and {} all went
silent -> EMITS, while an absent name and 'PostToolUse' were unchanged.
readEventName now returns '' only for an absent name and null for a
present-but-non-string one; both call sites compare for equality only, so every
well-formed payload behaves identically.

Five new rows, each proven fail-first with the mutations attributed separately:
reverting the writes reds the write-through and non-regular rows, reverting the
read reds the mute and non-regular rows, and reverting the absent/malformed
split reds the Gemini row. The changeset's "behaves like a fresh session" is
narrowed to name the 60-second suppression window and the best-effort reset.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018FUAVz49BghqxoJgwt7EW9

* test(#3709): pin both 4096-byte read bounds at their boundaries

Round 8 asked for limit-1/limit/limit+1 coverage on the size bound the
round-7 sentinel read-hardening introduced (gsd-context-monitor.js:335).
The existing refusal row pads to 8192 -- a full 4096 bytes clear of the
fence -- so `>` vs `>=`, or an off-by-one in the constant itself, was
invisible to it.

Covers the sibling bound too. The identical check guards the round-4
WATERMARK read at :278 and its refusal row pads to 8192 in exactly the
same way; the review's own rationale (this file already holds
WATERMARK_SKEW_SECONDS to a boundary trio, so an uncovered bound is the
odd one out) applies to it unchanged. That half is a class sweep of a
pre-existing bound and is test-only -- say the word and it comes out
without touching the rest.

Both trios assert on observable hook output rather than an internal
error. Sentinel: an honored {callsSinceWarn:1,lastLevel:'warning'} keeps
the debounce arm taken at remaining=30, so nothing is emitted, while a
refused one falls back to first-warn defaults and emits. Watermark:
honored mutes (stdout empty), refused leaves the warning. The 4097 row is
the non-vacuity control for the two accept rows. Payloads are sized by
measurement, with Buffer.byteLength asserted to equal the target, not by
arithmetic on an assumed prefix width.

Proven fail-first in both directions, with the hook restored after:
`> 4096` -> `>= 4096` reds both trios (94/96); `> 4096` -> `> 4097` reds
both trios (94/96); restored, 96/96. Under both mutations only the two
new rows fail -- the pre-existing 8192-padded rows stay green, which is
the review's fencepost claim demonstrated rather than assumed.

* fix(#3709): correct the changeset's mute-window claim and a superseded comment

Both from the pre-push Codex pass on the full PR.

The changeset said readings are "suppressed for up to 60 seconds after a
compaction starts". That is false at the accepted skew boundary, and this
repo's own docs/context-monitor.md already carried the accurate figure:
first recovery is watermark+61s with no skew and watermark+66s for a
watermark at the +5s skew limit. Measured independently at +64 silent,
+65 silent, +66 warning. The changeset now states the window plus the
accepted skew, matching the doc rather than contradicting it.

A comment in the malformed-event row still described readEventName as
returning "" for every malformed name. Round 7 superseded that: a
present-but-non-string name returns null and only an ABSENT one returns
"", so a malformed payload can no longer reach the Gemini fallback at
all. Marked as historical and corrected. The GEMINI_API_KEY pin stays --
the row is about readEventName's typing, not the fallback, and an ambient
key would still change what it measures.

Codex's three Major findings are not taken, on attribution rather than
logic; the reasoning is in the PR reply. In short: the watermark does not
exist at the merge-base at all (0 occurrences), so "base emits, HEAD
mutes" compares a new feature against its absence rather than showing a
regression; and the base sentinel read is a bare readFileSync, which
blocks on a planted FIFO exactly as the hardened read would, so the
TOCTOU stall is not introduced here. The underlying limits -- watermark
provenance, and lstat->open races on a non-symlink substitution -- are
real, pre-existing, and already offered to the maintainer as follow-ups.

* fix(#3709): read both sentinels through one hardened helper; state the two limits precisely

Round 9's Major, with a correction to its premise, and both Minors.

The review names "watermark read/write helpers this PR adds" that a call
site at :238-250 duplicates inline. There are no such helpers: this PR
adds readEventName and writeSentinel, the latter a write-side primitive a
read cannot call, and :238-248 is base code the diff never touched. What
IS duplicated is the hardened READ. The watermark read (round 4) and the
warnPath read (round 7) are the same ten lines twice -- lstat, isFile and
a 4096-byte bound, O_RDONLY|O_NOFOLLOW, readSync, close -- differing only
in the path variable and the error string, and that is two copies to keep
in step by hand. Now one function, readSentinel(target), beside
writeSentinel. Refusal throws; both callers already wrapped the read in a
try/catch that degrades to "no file", so behaviour is unchanged by
construction.

Proven rather than assumed: with the helper replaced by a bare
readFileSync in a complete scratch tree, exactly the five hardened-read
rows in tests/perf-317-context-monitor-fs.test.cjs go red -- round 7's
symlinked and non-regular sentinel and its size bound, round 4's
non-regular watermark, round 8's watermark size bound -- so the helper
carries both call sites' guarantees and the rows pin it. 96/96 with the
helper in place.

Minor, drop vs delay: the grace-window comment said "dropped" on one line
and "delayed" three lines later, and docs/context-monitor.md said
"delayed". A genuine exhaustion reading inside the window is skipped, not
queued: its warning and its #1974 breadcrumb both fire on the next reading
after the window, so both are delayed when a later reading comes and lost
when none does -- a session ending inside the window records neither.
Comment and docs now say exactly that, and that the loss is accepted over
trusting a reading that may be the pre-compaction value under a fresh
timestamp.

Minor, ordering: the PreCompact unlink and the debounce
writeSentinel(warnPath) are two writers with nothing serialising them; a
debounce invocation that read pre-compaction state and lands its write
after the unlink would resurrect the sentinel the reset removes. The hook
relies on the host dispatching a session's hooks one at a time, which
Claude Code does and the other runtimes are assumed to. Stated at the
reset as an assumption, with the lock-file alternative named and not
taken.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TadqrpTE2m6gCB7CaNNLcy

* fix(#3709): write the compaction watermark through writeSentinel

Review of #3808, round 10. The PreCompact watermark write was the block
writeSentinel was lifted from in round 7, and it kept its own inline copy
of unlink-then-O_EXCL a few lines below the helper. Round 9 flagged that
write-side duplication; the round-9 reply misread it as the read side and
unified only the reads. The write now calls the helper too, so the hook
holds one copy of the hardened write, not two.

Behaviour is unchanged: same unlink-then-O_EXCL sequence, same flags,
same best-effort outer catch. The one difference is that writeSentinel
closes the descriptor in a finally, where the inline copy leaked it if
writeSync threw before closeSync.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01R7bQLXAKubb4EFLtCPiLiL

* fix(#3709): read the statusline bridge through the same hardening as the sentinels

Review of #3808, round 11. `metricsPath` is built one line from `warnPath` and
`watermarkPath` — same tmpdir, same predictable `claude-ctx-{sessionId}` shape,
same threat model this PR documents at length for its siblings — and it is the
only one of the three read on EVERY invocation. It was also the only one still
reached by a bare `readFileSync`, so the symlink-follow and the symlink-to-FIFO
stall that rounds 4 and 7 closed on the other two stayed reachable here, on the
file's highest-traffic path. It now goes through `readSentinel` like the rest.

The 4096-byte bound is ample for it: the statusline writes four fixed fields
(`gsd-statusline.js`), about 140 bytes with a UUID session id, so no legitimate
bridge approaches it. A refusal lands in the same rethrow an unreadable or
malformed bridge already did.

The comment introducing `readSentinel` claimed the warn sentinel was "the one
bare readFileSync". Read as scoped to `warnPath` that was true, but it reads as
a claim about the file and it is not one — the bridge kept its own until this
round. Corrected rather than left to mislead the next reader.

Round 11 Minor: `readSentinel` discarded `fs.readSync`'s return value and
assumed the buffer was full, so a file truncated between the `lstat` and the
read left a zero-filled tail. It now refuses a short read. Stated plainly
because it was measured: this guard has NO observable behavioural delta —
deleting it leaves the new row green, because the NUL tail makes `JSON.parse`
throw one line later and both paths degrade to "no sentinel". It is a
consistency fix in a function whose purpose is refusing to trust what it read,
and the test comment says exactly that rather than implying coverage it lacks.

Five rows added: the bridge refusing a planted symlink (with an attacker-chosen
reading that WOULD warn if followed, so silence is proof), a non-regular bridge,
an oversized bridge, the shrink path end to end, and the direction that matters
most — a healthy bridge still warns, so the hardening is not a mute. Proven by
mutation: reverting the bridge to `readFileSync` reddens two rows. The shrink
injection carries an engagement marker for the same reason the lstat-claim one
does, learned the same way: the hook rewrites the sentinel later in the
invocation, so a size check afterwards passes whether the truncation landed or
not.

An independent full-PR pass on this round added two more, both taken:

`writeSentinel` discarded `fs.writeSync`'s return value, and a short write is
permitted by the syscall — so a truncated sentinel could reach disk and every
later read would reject it, silently losing the debounce accounting or the
watermark this write exists to record. It now loops until the payload is
written, as Node's own `writeFileSync` does, with an explicit no-progress guard.
Pinned by a row that injects a one-byte first write; reverting the loop reddens
it.

The directory row's comment claimed it pinned the `lstat` isFile() check. It
does not — measured: deleting that condition leaves the row green, because
reading a directory fails on its own a line later. The comment now says the row
pins the outcome, and names the symlink row as the one that pins isFile().

DISCLOSED, NOT FIXED HERE — a session id long enough to push the derived
filenames past NAME_MAX. The bridge is `claude-ctx-{id}.json`; the sentinel and
watermark add longer suffixes, so on a 255-byte limit the watermark stops fitting
at a 230-character id and the sentinel at 233. Measured base-vs-HEAD at 233+:
base is SILENT, HEAD emits the warning, because the bare `writeFileSync` base
used threw ENAMETOOLONG out of the warning path while `writeSentinel` degrades
best-effort and lets the warning through. That is an accept-direction delta and
it is in the delivering direction — base swallowed a warning the user should
have seen, which is this issue's own failure class. The underlying limit is a
property of the per-session filename scheme, shared by two files that predate
this PR, and bounding session ids belongs to whatever writes them
(`gsd-statusline.js`), not to the sentinel logic. Happy to fold a length guard
in here if you would rather have it in this PR.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CRMEuzNMWn3gs5uUW2ghcF

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-09-05 06:29:06 -04:00
Cody Anderson
77e2472ca0 enhance(#4221): replace installer Read() deny rules with a managed secret-read guard hook (#4236)
* feat(#4221): gsd-secret-read-guard PreToolUse hook + registration

Add hooks/gsd-secret-read-guard.js, a blocking PreToolUse guard on
Read|Grep|Bash that denies reads of .env, .env.<suffix> and .secrets
(the .env.example/.sample/.template/.dist templates stay readable).
Read checks file_path; Grep checks an explicit path and judges the glob
per brace alternative; Bash runs a two-pass token scan (quotes, comments,
redirects with fd digits, separators, $( )/backtick/<( ) recursion,
heredoc bodies never scanned as commands, nested bash -c/eval rescans,
git <ref>:<path> shapes) with a closed non-reading exemption set for
existence checks. Fail-open crash policy; 1 MiB commands are denied as
command-too-large; more than 64 glob alternatives as glob-too-complex.

Why: Claude Code 2.1.259 makes every `cd DIR && grep …` compound prompt
for approval whenever any Read() deny rule exists, even in auto mode. A
hook denial is not a permission rule and never arms that check. The
installer-written deny rules are retired in the follow-up commit.

Registration: hooks.json (Read|Grep|Bash, timeout 5), build-hooks
HOOKS_TO_COPY, managed-hooks-registry, runtime-hooks-surface (blocking
guard with BLOCKING_GUARD_TIMEOUT_S; Kimi ReadFile|Grep|Shell),
shell-command-projection managed sets, installer-migration-report,
OpenCode/Kilo plugin (grep tool mapping, include -> glob, dispatch),
docs tables in five locales, ADR-766 always-on list, regen:derived
fixtures, and a new table-driven unit suite.

* test(#4221): pin the secret-read guard in existing hook gates

Register gsd-secret-read-guard.js in every existing hook gate: the
hooks-crash-policy table (deny row; 6 -> 7 deny cases), plugin-manifest
REQUIRED_HOOKS and its Read|Grep|Bash group, docs-hooks-table-parity
EXPECTED_SURFACE_HOOKS, install.test MANAGED_JS_HOOKS, install-minimal-
hooks JS_HOOKS/BLOCKING_GUARDS, portable-node-runner GUARD_HOOKS,
kilo-upgrades PLUGIN_GUARD_HOOKS, the Kimi normalization-parity and
typed-payload floors, the OpenCode adapter (grep mapping, include ->
glob, three dispatch tests) and a Kimi TOML matcher assertion.

* fix(#4221): retire installer Read() deny rules (legacy filter)

Rename GSD_CLAUDE_DENY_PERMISSIONS to GSD_CLAUDE_LEGACY_DENY_PERMISSIONS
and stop adding the three Read(.env) / Read(.env.*) / Read(.secrets)
strings. mergeClaudePermissions now only filters them out of an existing
permissions.deny: an absent deny key stays absent, a malformed one is
still repaired to [], and an array emptied by the filter is deleted so
no `"deny": []` residue is left. Uninstall filters the same legacy list
and, symmetric with the Antigravity branch, drops an emptied allow or
deny key and an emptied permissions object.

Unlike the #2278 allow-side migration there is no surviving current
deny list, so the constant is renamed rather than mirrored. Removal is
byte-exact: a hand-written identical rule is indistinguishable from the
installer's and is removed too (the manifest never recorded permission
strings). USER-GUIDE and CONTEXT.md updated.

* test(#4221): flip install-regressions deny-rule assertions to the retired shape

The fresh-merge, non-destructive merge, idempotency, end-to-end install,
reinstall and uninstall assertions now expect no Read(.env*) deny rules
and no permissions.deny key on a fresh install; the deny:null repair case
is kept. A new describe block covers the legacy filter: retired strings
removed with a user entry kept, partial sets, near-miss strings
untouched, idempotency, GSD-only deny array deleted, a pre-existing
empty deny preserved, and uninstall symmetry for allow/deny/permissions.

* chore(#4221): add changeset fragment for PR #4236

* fix(#4221): case-fold names; scan shell stdin and xargs pipes

Review round 1 (trek-e):

- Blocker: secret-name matching is now case-insensitive in the Read,
  Grep (path and glob) and Bash paths, so `.ENV` / `.Secrets` on a
  case-insensitive filesystem are recognized as the same secret file.
- Major: a shell interpreter's script is now scanned wherever it comes
  from. The tokenizer keeps heredoc bodies as per-segment tokens and
  records separator operators; pass 2 groups by segment id and resolves
  bash/sh/zsh/dash/ksh/su invocation mode: `-c` (including combined
  `-lc`) scans the script operand, a file operand is checked as a file
  (a `<( )` operand's echo/printf output is reconstructed), otherwise
  stdin is the script and heredocs, here-strings and a piped echo/printf
  source are scanned. `eval` joins all its operands; `source`/`.` handle
  process substitution. Data heredocs (`cat <<EOF`, the commit-message
  shape) stay unscanned.
- Major: `… | xargs <cmd>` checks the upstream segment's operands as
  file names when the sub-command reads (`echo .env | xargs cat`,
  `find . -name .env | xargs cat`); `-a`/`--arg-file` suppresses the
  inference; a shell sub-command's `-c` script is scanned.

Header, USER-GUIDE bullet and changeset updated; documented gaps now
include piped scripts from non-echo sources and `exec`/`timeout`
wrappers. 60 new suite cases pin the block and allow shapes.

---------

Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-09-05 04:00:08 -04:00
Behruz Nassre Esfahani
4499933807 fix(#3802): resolve the heredoc body before validating the commit subject (#3816)
* fix(#3802): resolve the heredoc body before validating the commit subject

With hooks.community: true, gsd-validate-commit.sh blocked EVERY heredoc-form
commit with CONVENTIONAL_COMMITS_VIOLATION regardless of the message, including
Claude Code's own documented idiom:

    git commit -m "$(cat <<'EOF'
    feat(auth): add login flow
    EOF
    )"

Reproduced before changing anything: conforming heredoc -> exit 2; plain
-m "feat(auth): add login flow" -> exit 0.

Root cause is the extraction regex `-m[[:space:]]+"([^"]+)"`. Bash `[^"]`
matches newlines, so the capture ran from the quote after -m to the FINAL quote
at `)"`, swallowing the whole span. `head -1` then returned the literal
`$(cat <<'EOF'` as the subject, which can never satisfy Conventional Commits.

Fixed by not answering a regex bug with another regex. hooks/lib/git-cmd.js
already exists because "a naive regex misses all three" invocation forms, and
extractBranchArgument is the established precedent for pulling an argument off a
git command line. extractCommitSubject joins it on the same tokenizeShellLike
seam — which, checked first, already returns the entire heredoc span as ONE
token, leaving only "resolve the body to its first line" as new logic.

Because the walk starts at the subcommand, `git -C <path> commit` and
env-prefixed invocations now extract correctly too — forms the raw string scan
never handled.

Deliberately unchanged, and pinned as such: a glued `-mfeat: x` and
`--message=...` still yield no message, exactly as the regex left them. The fix
stays scoped to the reported defect rather than widening on a true observation.

Two things I got wrong and corrected by measuring rather than reasoning:

  - I expected `git commit -m ""` to be blocked. Checked against the ORIGINAL
    hook: allowed before, allowed now, identical. The scanner drops the empty
    token so it takes the null path. My expectation was wrong, not the code.
  - That exposed a false comment I had just written, claiming the exit-status
    split prevents silently allowing `-m ""`. It does not. The split IS
    load-bearing, but for a heredoc whose body's first line is blank, which
    resolves to an empty subject and is correctly blocked. The comment now names
    the real case and records that `-m ""` is not it.

Tests at both layers: 9 unit rows on extractCommitSubject beside its sibling in
tests/worktree-safety.test.cjs, and 5 behavioral rows piping real PreToolUse
payloads through the hook in tests/hooks-opt-in.test.cjs. Replacing
firstLineOfMessageArg with a plain first-line return reds 8 of them across both
files. (A first mutation attempt silently no-opped and reported green — the
mutated body is echoed in the transcript for the run that counted.)

Out of scope, per the issue: the hooks.commit_types config surface, split off by
the maintainer as #3811 and explicitly sequenced after this.

Verified: `npm run lint:ci` exit 0.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(#3802): confine the fix to heredoc resolution, closing four regressions

Codex review of the first attempt. It was right, and the finding is one my own
rules already name: a true observation is not a licence to widen the diff.

The first attempt replaced the shell's `-m` extraction with a token walk. That
looked like the better abstraction — this module exists precisely because a
naive regex misses invocation forms — but selecting WHICH argument is the
message was never the defect, and changing it regressed four forms that
upstream allowed, plus opened a bypass:

  - `git commit -- -m WIP`             -- introduces pathspecs; `-m` is a path
  - `git commit --amend && echo -m WIP` a later command's flag became the message
  - `git commit -m "" --allow-empty-message`  the shared scanner drops empty
                                        tokens, so the next flag became the
                                        message
  - `git commit -m WIP`                unquoted argument
  - `-m "WIP notes <<EOF\nfix: smuggled subject"` was ALLOWED — the opener was
    recognised unanchored, so validation skipped past the real, non-conforming
    subject. An enforcement bypass, not a misclassification.

Now confined to the actual defect. The shell's `-m` capture is restored byte for
byte, and only the subject-from-message step is delegated, to a PURE STRING
helper `resolveCommitSubject()` that never tokenizes. Verified as a differential
against the upstream hook run inside the real tree: the only behaviours that
change are the two intended heredoc rows (2 -> 0); all four forms above read
identical, and the bypass case blocks.

That differential also corrected my own control. An earlier comparison ran the
upstream hook from a scratch directory, where its `lib/` could not resolve
`../../gsd-core/bin/lib/token-scanner.cjs`, so the classifier failed open and
reported exit 0 for everything. That made a real regression look pre-existing.
Re-run inside the tree, `<<-"TAG"` (a double-quoted tag nested in the
double-quoted argument) is genuinely pre-existing — the capture truncates — and
is now recorded as a known limitation rather than silently "fixed".

Also fixed from the review:
  - `<<-` strips leading TABS from body lines; returning the raw line blocked a
    conforming message.
  - a non-identifier tag such as `END-MSG` is a valid bash word and was rejected.
  - an immediately-following terminator is an EMPTY message, not a subject.
  - a node/library failure now falls back to the previous `head -1` instead of
    skipping validation, so a broken extractor degrades to old behaviour rather
    than becoming a new silent-allow path.

Tests strengthened per the review: the opener-spelling rows now assert BOTH
directions per spelling, since "conforming passes" alone would also pass if the
resolver returned an empty subject for a spelling it failed to parse. Added
differential rows pinning the five previously-allowed forms, and a row for the
bypass. Dropped two rows whose comments claimed the raw scan could not handle
`-C`/env-prefix invocations — it could; the claim was wrong.

Replacing resolveCommitSubject with a plain first-line return reds 9 rows across
both files. (Mutant body echoed in the transcript; an earlier mutation attempt
on this branch silently no-opped and reported green.)

Verified: `npm run lint:ci` exit 0.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(#3802): keep the installed hook runtime-neutral

`hooks/lib/git-cmd.js` ships into every runtime, including hermes and qwen,
where tests/install.test.cjs enforces that no Claude reference leaks into the
installed tree. My JSDoc named the idiom after the runtime that documents it.

Reworded to describe the SHAPE rather than the vendor; the runtime is still
named in the changeset, which feeds CHANGELOG.md where such references are
allowed, and in the tests, which are not installed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* chore(#3802): backfill changeset pr number

The fragment shipped with the documented `pr: 0` placeholder, which the
changeset lint treats as always-silent, because the number does not exist until
the PR is opened. Backfilled to 3816 now that it does.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(#3802): close the truncated-capture hole, add the required test artifacts

Review round 1. Major 3 was the one that mattered, and it disproved a claim I
had stated in falsifiable form — the PR body said only two behaviours change;
the differential found five.

Major 3 — an embedded `"` truncates the `-m` capture, so the resolver received a
PREFIX of the real subject and the length gate measured the wrong string. Before
this fix the whole form was blocked outright, so the gate was unreachable; the
fix opened the path and then mismeasured it. A new enforcement hole, so it is
CLOSED here rather than declared.

Closed precisely rather than bluntly. A first attempt refused to resolve any body
with no terminator, which also blocked commits whose SUBJECT was intact and whose
quote sat further down the body — a false positive of its own. Truncation is only
fatal to the line it lands IN, and a captured line is complete exactly when
another line follows it, because the capture kept its newline. So an unterminated
body whose subject line is followed by more text stays measurable; only a subject
line running to the end of a truncated capture falls back to the opener, which
fails the format gate exactly as this form did before the fix.

Major 1 — fast-check property rows for the new parser, via the shared seeded
setup helper rather than requiring fast-check directly, per repo convention:
totality (a security property here, since an exception on this path fails OPEN),
idempotency, and that the result is always a single line drawn from the input —
the third catches a resolver that concatenated or trimmed while satisfying the
first two.

Major 2 — the 72-char gate is now exercised at {71, 72, 73} on the RESOLVED
heredoc subject, with the fixture length asserted so a mis-built fixture cannot
silently pass. 92 chars did not show which side of `> 72` the code sits on.

Minor 1 — leading blank body lines are skipped, as git's cleanup=whitespace does.
A conforming commit written that way was still blocked, which is the same defect
class #3802 reports.

Nit 1 — a backslash-escaped delimiter (`<<\EOF`) is now the same delimiter rather
than failing closed on a delimiter that includes the backslash.

Nit 5 — changeset trimmed from 2,208 chars of design note to the user-visible
change.

Mutation discipline, including a correction to my own: dropping the truncation
guard reds the unit rows, and the pre-review naive shape reds the hook-level row
too. My first mutant did NOT distinguish the hook row — removing the guard made
an empty slice and blocked for an unrelated reason, so the row passed and looked
proven. Only mutating to the actual pre-review shape showed it discriminates.

Verified: `npm run lint:ci` exit 0.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(#3802): measure the subject as git does — strip trailing whitespace, split CRLF

git's cleanup=whitespace strips whitespace at BOTH ends of a line; the
resolver handled only the leading direction, so a 72-char subject with
trailing spaces measured 75 and stayed blocked — the defect class #3802
reports, surviving one round further (review of #3816, Major 2). The
resolved subject now drops trailing spaces and tabs; the plain non-
heredoc path is untouched, keeping the fix confined to heredoc
resolution. The length-gate boundary rows gain dirty fixtures: 72+3
trailing spaces passes, 73+1 stays blocked on LENGTH.

split('\n') left \r on every body line, so on CRLF input the delimiter
never matched: the truncation guard was inert, an empty message resolved
to 'EOF\r', and a real 72-char subject measured 73. Split on /\r?\n/
(Minor 3).

The three property tests never reached the parser — the pinned-seed
fc.string corpus contained no newline and no opener, so every property
reduced to f(s) === s (Major 1). The generator now constructs heredoc-
shaped input (all opener spellings, <<- tabs, optional terminator, CRLF)
and each property asserts a floor on inputs its corpus actually resolved.
All new rows proved failing-first against the pre-fix resolver.

Also records the unquoted-delimiter expansion limit as one JSDoc
sentence (Informational 5).

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

* fix(#3802): close two recognition bypasses, pin the dquoted-delimiter limit

Codex whole-PR review found two enforcement bypasses in the resolver:

- The opener's path prefix was \S*, which accepted `id;/bin/cat` — the
  resolver then validated the heredoc BODY while bash runs `id` first
  and git's real subject is id's OUTPUT. The prefix is now a
  path-character class; any shell metacharacter fails recognition and
  the form falls back to the opener line and the format gate.

- The blank-line skip used JavaScript trim(), whose Unicode whitespace
  class skips lines git KEEPS: a NBSP first body line resolved to the
  SECOND line while git's real subject is the NBSP line (verified
  against git stripspace — the c2a0 bytes survive). Blank is now git's
  ASCII space/tab only; a Unicode-blank line is returned and fails the
  format gate, the same fail-closed direction git takes.

Both proven failing-first at resolver AND hook level. Also: the
<<"TAG" spelling is recorded as a documented limit — the -m capture
stops at the delimiter's own quote so the caller can never deliver it
(fail closed; widening the capture would change every embedded-quote
case) — with a hook-level row pinning the limit; and the derivation
property no longer accepts '' unconditionally, only for heredoc-shaped
input, so a conditional constant-'' regression can't satisfy the corpus
floor unnoticed.

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

* fix(#3802): recognition whitespace is ASCII, and '' answers to the generator

Codex round 2: the opener's \s accepted Unicode whitespace bash does
not split on — $(<NBSP>/bin/cat was recognized here while bash reads
<NBSP>/bin/cat as the executable NAME, so recognition claimed a
substitution that does not run cat. Every whitespace position in the
recognition is now [ \t], the same ASCII rule as the blank-line skip,
proven failing-first.

The derivation property's ''-acceptance now consults GENERATION-TIME
metadata: the heredoc generator records whether it built an empty
message (terminator reachable, all scanned lines ASCII-blank, <<- tab
stripping accounted for), and '' is accepted exactly then — a resolver
conditionally degrading to '' on non-empty heredocs now fails, closing
the residual round-1 permissiveness without re-deriving resolver logic.

The changeset no longer overstates the opener spellings: it names the
capture-deliverable set and the documented <<"EOF" limit.

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

* fix(#3802): nothing after the terminator escapes measurement

Round-3 BLOCKER: everything after the heredoc terminator was silently
discarded, so `-m "$(cat <<'EOF'\nfeat: ok\nEOF\n) <200 a's>"` —
one 200+ char real subject once bash substitutes — measured 8 chars and
dodged COMMIT_SUBJECT_TOO_LONG, a hole the base did not have. The
canonical idiom's tail is exactly one closing-paren line; any other tail
now falls back to the opener line and the format gate, the pre-fix
behaviour for the whole form. Proven failing-first at resolver and hook
level, including the glued-text and second-substitution variants.

Also from round 3: `cat<<'EOF'` (no space) is legal bash and now
resolves — the token before << is still literally cat; the env-prefixed
and option-terminated spellings join the JSDoc KNOWN LIMIT list instead
(fail closed, modelling bash prefix words is cost with no reported
user); the changeset states the embedded-quote truncation limit for the
message body, not just the <<"EOF" spelling; the dquoted unit and hook
rows now cross-reference each other; and the fast-check setup helper's
docstring no longer claims property-file exclusivity.

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

* fix(#3802): glued text outside the closing quote must not shrink the measurement

Codex on the round-3 guard: bash concatenates -m "$(…)"suffix into ONE
argument, but the capture holds only the quoted part — so the resolver
measured the heredoc body (8 chars) for a 200+ char real subject, a
net-new length-gate bypass the base did not have (base measured the
opener and blocked). When the closing quote is followed by anything but
whitespace or end-of-command, the hook now skips the resolver and keeps
the pre-fix first-line subject: the heredoc form fails the format gate
exactly as on base, and the plain single-line form keeps base behavior
unchanged — both pinned as differential rows, the glued-suffix row
proven failing-first against the unguarded script.

The property generator's ''-oracle now models the post-terminator guard
it previously predated: expectEmpty requires the FIRST reachable
terminator to be followed by the one canonical closing-paren line, so a
resolver regressing to '' on a non-canonical tail (e.g. a body line that
doubles as an early terminator) fails the derivation property instead of
being blessed by stale metadata.

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

* chore: retrigger CI — the previous wave never started (Actions queue stall)

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

* fix(#3802): only resolve a heredoc whose body bash does not rewrite

Round-4 review found two net-new enforcement bypasses: commands the base
hook blocked (exit 2) that this branch allowed (exit 0). Both reproduced as
a base-vs-head differential against the real hook, not inferred.

The predicate "may I resolve this?" was computed from the resolver's input
string alone, while two of its determinants live outside that string:

  1. WHICH -m quote arm produced the input. Inside -m '...' bash performs no
     command substitution, so $(cat <<'EOF' is literal text and git's real
     subject is the opener line. The resolver ran on both arms, so all four
     delimiter spellings went 2 -> 0 on the sq arm — reachable by the
     ordinary slip of typing ' for ". The hook now records MSG_QUOTE and
     gates the resolver on dq; sq keeps head -1, exact base parity.

  2. WHETHER the delimiter suppresses expansion. Only <<'D', <<"D" and <<\D
     do; a bare <<D is expanded by bash before git sees it. Resolving the
     literal dodged the format gate (feat: $UNSET_VAR reaches git as feat:)
     and the length gate (feat: ${LONG} reaches it at any length). The
     opener regex now separates the backslash-quoted and bare alternatives
     and refuses the bare one — the same fail-closed rule the metacharacter,
     truncation and post-terminator guards already follow.

A test row asserted exit 0 for a bare-delimiter body, so the suite defended
the second bypass and the fix could not land without editing a test that
read as intentional. That row and its two unit counterparts now assert the
block, per RULESET.TESTS.delete-bad-tests. Two unrelated rows used <<-EOF
to exercise tab stripping; they move to <<-'EOF' so each tests what it names.

Scoping the adjacency guard to the matched arm — required by the fix above —
also removes a spurious block (round-4 Minor 1): a double-quoted heredoc
whose body mentioned a glued single-quoted token tripped the sq arm.

The JSDoc claimed <<"EOF" was unreachable through the caller and that the
bare-delimiter gap was pre-existing. Round 4 disproved both; both corrected
here, along with the matching changeset sentence.

Verified: 7 bypass commands now block at head (was allow), the #3802 fix and
plain-form parity are unchanged across 8 control commands, hooks-opt-in 44/44,
worktree-safety 401/401, property-test non-vacuity 73/200 against a floor of
20, lint:ci exit 0.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EAbQy7n4mLMB7h3TnZ8GdG

* fix(#3802): resolve only where the captured text is provably git's subject

Codex review of the full PR found two more inputs where the validated text
is not the subject git receives, both net-new bypasses (base 2 -> head 0),
plus one escalation of round-4 Minor 2. All reproduced here against the real
hook and confirmed against real commits before fixing.

BLOCKER — the matched -m need not be git's message. The capture is a search
over the whole command and the double-quoted arm runs first, so it could
select a -m that is not the subject at all. git concatenates multiple -m
values and takes the FIRST as the subject, so

    git commit -m 'WIP first' -m "$(cat <<'EOF' … )"

commits the subject `WIP first` while the hook validated the heredoc. Same
for an unquoted earlier -m, for a heredoc after `--` (a pathspec, not a
message), and for one belonging to a later `&& echo`. The mis-selection is
pre-existing; resolving it is what made it a bypass. The hook now resolves
only when nothing before the matched -m could have been an earlier message,
an end-of-options marker, or another command.

BLOCKER — cleanup mode is part of the predicate. The resolver skips leading
blank lines and strips trailing whitespace because git's DEFAULT
cleanup=whitespace does. Under --cleanup=verbatim git does neither, so a
72-char subject plus three trailing spaces is committed at 75 bytes while
the hook measured 72 — COMMIT_SUBJECT_TOO_LONG dodged. This one hides from
`git log --pretty=%s`, which strips trailing whitespace in its own output;
the raw commit object shows 75 vs 72. Any named mode other than whitespace,
in either the --cleanup= or -c commit.cleanup= form, now refuses to resolve.

MAJOR — recognition trusted any path ending in /cat, so a planted
`../evil/cat` printing `WIP injected` had its heredoc body validated while
git's real subject was `WIP injected`. Only a bare `cat` or an absolute path
is recognised now. A bare `cat` shadowed on PATH is a documented residual and
is not fixable from a string — nor a meaningful boundary, since planting an
executable already allows running git directly.

The changeset and the JSDoc both asserted that a `"` anywhere in the message
blocks. Measured false: a `"` on a later body line resolves fine, because the
subject completes before the truncation point; only a `"` in the subject line
blocks. The changeset also listed <<"EOF" as covered when it measures 2/2.
Both rewritten to claim only what is measured, and the residual false
positives are now named.

Verified: 4 + 2 + 3 new bypass commands now block, with non-vacuity controls
proving the default path still resolves; all round-4 maintainer blockers stay
closed; the #3802 fix and plain-form parity unchanged across 7 controls;
hooks-opt-in 47/47, worktree-safety 402/402, property non-vacuity 73/200
against a floor of 20, lint:ci exit 0.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EAbQy7n4mLMB7h3TnZ8GdG

* fix(#3802): scope the cleanup-mode guard to the command outside the message

The guard scanned the whole $CMD for `--cleanup=` / `commit.cleanup=`,
and the heredoc BODY sits verbatim inside $CMD, so any conforming
message that merely MENTIONED the token was refused, fell back to the
opener line, and was blocked with CONVENTIONAL_COMMITS_VIOLATION. These
are ordinary English in this repository, whose own hooks and docs
discuss cleanup modes constantly. Reproduced against the real hook:
`fix: document commit.cleanup=strip behavior` blocked, the same message
without the token allowed (review of #3816, round 5 — BLOCKER).

Scoping to $MSG_PREFIX alone, as prescribed, would have reopened the
round-4 length-gate bypass the guard exists for: git accepts the flag on
EITHER side of -m, and `git commit -m "<heredoc>" --cleanup=verbatim` is
caught today only because the scan is command-wide. Measured, not
assumed. The scan now covers MSG_PREFIX + MSG_SUFFIX — the whole command
minus the one span that is message text — joined with a space so a token
cannot be forged across the seam.

Swept the guard class rather than the reported instance. The adjacency
guard does not share the defect: an in-body `-m "foo"bar` is refused by
the already-documented embedded-quote capture limit (any `"` in the
subject line truncates the capture), and an in-body `-m ` without quotes
resolves and is allowed. Deliberately untouched.

Both directions pinned failing-first: the three false-positive rows red
against the unscoped guard, and the trailing-flag row reds against
prefix-only scoping. Each mutation was echoed back to prove it landed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XogDtuuuGQEfsWaLSaZCLB

* fix(#3802): read commit options the way bash hands them to git

Round 6 reported the adjacency guard scanning all of $CMD for a glued
`-m "..."`, so a glued -m belonging to a chained-after command refused a
heredoc that was never truncated. Glue is a property of the ONE character
following the matched span, so that character is now the whole window.
Separators and redirections are excluded because bash does not
concatenate across them: in `-m "msg"&& echo hi` the argument ends at the
quote, so there is no truncated capture to defend against.

An independent full-PR pass then found three accept-direction defects
this PR had introduced in earlier rounds, each measured against a real
commit by reading the raw commit object — `git log --pretty=%s` strips
the trailing whitespace that makes the length wrong and hides it:

  --cle=verbatim         git accepts any unambiguous prefix of a long
                         option, so the mode was set by a token that is
                         not the literal --cleanup. 75-byte subject
                         recorded, 72 measured.
  -am 'WIP first'        git reads this as -a -m, so the real subject is
                         `WIP first` and the heredoc is only the second
                         message. The scan looked for a standalone -m.
  --clean""up=verbatim   bash removes quotes before git sees the
  -""m                   argument, so a spliced spelling is the same
                         option and matched no literal.

The two option-name scans now read their window with quote characters
removed, which is what bash does to it, and the cleanup class covers
git's abbreviations. The adjacency test deliberately keeps the raw text:
it asks about a literal character position, not an option name.

Narrowing the cleanup window to git's own command segment was tried and
reverted. `;`, `&` and `|` end a command only outside quotes, and this is
a substring scan, not a parse: an unconditional trim cut the window short
on `--author "a&b"`, and a quote-aware trim still cut it on `--author
a\&b`. Each hid a real trailing --cleanup=verbatim and accepted a 75-byte
subject. The resulting false positive — a --cleanup carried by a chained
command refuses the commit — is documented and pinned instead. Refusing a
commit git would take is recoverable; accepting an over-long subject is
not.

Sixteen rows in tests/hooks-opt-in.test.cjs. Seven mutations, including
both reverted narrowings, so no dead end can be reintroduced silently.

* fix(#3802): close six accept-direction bypasses in the resolve guards

Round 7's FIRST-MESSAGE GUARD Major does not reproduce. Measured against the
real hook in a complete tree at the reviewed head: the classifier gate runs
before any guard, so `git add -A && git commit …` (git->add stops on a
non-commit subcommand) and `cd dir && git commit …` (the first executable is
not git) exit 0 without a guard being evaluated. The control is the proof — a
subject the bare form blocks with CONVENTIONAL_COMMITS_VIOLATION exits 0 in
both chained forms, so the hook never validated them and cannot be
over-blocking them. The guard is unchanged; scoping this scan to $MSG_PREFIX
alone is what reopened the round-4 trailing-flag bypass.

The class was real, though, one shape further out: `FOO=bar; git commit …` IS
classified and then refused, because assignment detection is prefix-anchored
and the tokenizer does not split operators. Pinned as a counterexample and
disclosed rather than generalised away; narrowing it means changing
isGitSubcommand, the shared git-commit detector every gating hook uses, and it
fails closed.

Six accept-direction bypasses are fixed. Each let the hook resolve and ALLOW a
commit whose real subject the rules refuse; the three that turn on git's
recorded subject were confirmed against the RAW COMMIT OBJECT, since
`git log --pretty=%s` strips trailing whitespace and hid two of them:

  --cleanup=whitespace -m <72+spaces> --cleanup=verbatim  git kept 75 bytes
  -mWIP -m <heredoc>                                      git recorded `WIP`
  --mes=WIP -m <heredoc>                                  git recorded `WIP`
  -\m WIP -m <heredoc>                                    git recorded `WIP`
  git commit --amend --no-edit \n echo -m <heredoc>        echo's argument read
  --squash=HEAD -m <heredoc>                              `squash! …`

Causes: one BASH_REMATCH inspected only the FIRST cleanup directive while git
applies the last, so multiplicity now refuses rather than guesses at an
argument order a substring scan cannot recover; the option scan required a
trailing space or `=`, missing attached values and long-option abbreviations;
dequoting removed quotes but not the syntactic backslashes bash also removes;
the separator scan omitted newline; and --squash/--fixup have git compose the
subject, so the supplied message is not the subject at all. Every fix widens
refusal, the direction this file documents as recoverable.

The multiplicity count first broke the hook outright: the script runs under
`set -euo pipefail` and grep exits 1 when it matches nothing, which is the
common case, so every ordinary commit died at exit 1 with no verdict. Guarded,
and only caught because the probe runs the real hook rather than the scan.

Five new rows, all five proven red against the pre-fix hook, each carrying a
non-vacuity assertion that the canonical single-`-m` heredoc still resolves.
Changeset corrected on three counts: "all fail-closed" was wrong (persistent
commit.cleanup fails OPEN, as do the -C/-c/-F/-t message sources), "global
options are all walked through" was too broad, and the chained-before claim
now states what is measured.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018FUAVz49BghqxoJgwt7EW9

* fix(#3802): stop the separator and glue classes matching a literal backslash

Round 8's Major, with two corrections to its account.

`;`, `&` and `|` are metacharacters inside `[[ ]]`, so an inline bracket
class must escape each one. POSIX bracket expressions have no escape
mechanism of their own, so on bash 3.2 -- the system /bin/bash on macOS,
already a supported target here per the `declare -A` ban in
tests/install.test.cjs -- those backslashes reach the regex engine and add
a literal `\` to the class. bash 4+ consumes them, which is why this is
invisible on a modern bash. The hazard is specific to bracket
expressions: `\(` outside one is made literal correctly on every version,
and the subject validator and the `-m` capture classes were checked and
are unaffected.

The prescribed fix is not taken, because it does not parse. Inline
`[;&|]` is a bash SYNTAX ERROR on 3.2 and on 5.3 alike -- the backslashes
exist to get the metacharacters past the `[[ ]]` parser, so removing them
leaves an unparseable script. Each class is held in a variable and
expanded unquoted on the right of `=~` instead, which is a plain regex on
both versions.

One root cause, consequences in BOTH directions. The reported half is the
separator scan over-blocking. The half not reported is the accept
direction, and it is the more serious: the glue class is NEGATED, so on
bash 3.2 a backslash-glued suffix fell inside the exclusion and the hook
RESOLVED a heredoc it should have declined -- measured exit 0 on 3.2
against the unfixed hook, exit 2 everywhere else, with a letter-glued
control refused in all four cells.

The reported repro is not actually fixed by this, and the changeset says
so. A `\`-newline line continuation carries a literal newline, which the
round-7 separator guard refuses on every bash, so that shape stays
blocked with or without this change. Narrowing the newline guard is not
attempted: telling a continuation from a separator by substring scan is
the class that was tried twice in earlier rounds and reverted both times,
and an escaped backslash sitting immediately before a real newline is
indistinguishable from a continuation. Disclosed as a known fail-closed
limit instead.

Every new row runs under each bash on the machine. Against the unfixed
hook both bash 3.2 rows go red while all four bash 5.3 rows stay green --
written the ordinary way these rows would run under PATH bash, pass
against the broken hook, and prove nothing. Two non-vacuity controls per
interpreter prove the validator is reached rather than passing
everything. All 8 rows of the established differential harness are
byte-identical before and after on both versions: no regression, no new
refusal.

* fix(#3802): remove the $ of a dollar-quote from the option-name scans

Independent round-8 review, accept direction.

The option-name windows are dequoted so they match "the command as bash
hands it to git" -- round 6 removed quote characters, round 7 removed
syntactic backslashes. Both passes missed that bash has two further
quoting forms whose introducer is a `$`: `$'...'` and `$"..."`. Removing
the quote characters alone left that `$` stranded INSIDE the option name,
so `-$"m"` dequoted to `-$m` and matched no literal, while bash passed a
real `-m` to git.

Measured on bash 3.2.57 and 5.3.15 against a real repository: the hook
allowed

    git commit --allow-empty -$"m" WIP -m "$(cat <<'EOF'
    fix: a perfectly ordinary conforming subject
    EOF
    )"

with exit 0, and `git cat-file -p HEAD` recorded the subject `WIP`.

The comparison that establishes this is HEAD-internal, not a differential:
the same command spelled `-m WIP` is refused (exit 2). The merge-base
refuses EVERY heredoc form, including a perfectly conforming one, so its
exit 2 on this input says nothing about whether any guard fired -- it is
the absence of the feature, not a working check. The same miss covered
`$'m'`, spliced `--message`, `--cleanup`, `--squash` and `--fixup`.

An option NAME finished by a command substitution -- `--clean$(printf
up)=verbatim` -- is a different problem and gets its own guard: bash runs
a program to complete the name, so the argv git receives is not derivable
from this string at all, and resolution is refused rather than guessed.
The guard is scoped to the NAME: the class is a `-`-leading token whose
characters up to the substitution contain no `=`. A substitution
supplying a VALUE -- the ordinary `--author="$(git config user.name)"`,
spaced or glued, in either window -- is untouched and still resolves,
pinned in both directions. It is a SHAPE, not a segmentation of the
command line; segmenting was tried twice in earlier rounds and reverted
both times, and that reasoning stands.

Both new rows fail against the unfixed tree with their own assertions,
proven in a complete worktree at the previous head rather than a hook
copied out of its tree.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TadqrpTE2m6gCB7CaNNLcy

* fix(#3802): recognise a canonical cat, not any absolute path ending in /cat

Independent round-8 review, accept direction.

Round 4 restricted heredoc-opener recognition to an absolute path, after a
relative `./cat` was measured being trusted to echo its stdin. It stopped
at "absolute", so any absolute path ENDING in `/cat` was still trusted --
the same claim the round-4 reasoning had rejected one spelling earlier.

Measured on bash 3.2.57 and 5.3.15 against a real commit: with an
executable at `/.../fake-cat/cat` printing `WIP injected`, the hook
validated the conforming heredoc body and allowed the commit (exit 0)
while `git cat-file -p HEAD` recorded the subject `WIP injected`. The
same command through `./cat` was already refused, which is the control
that shows this is the round-4 class one spelling out rather than a new
one.

Recognition is now the canonical system locations -- bare `cat`,
`/bin/cat`, `/usr/bin/cat` -- which is the only identity claim a string
can support. `/usr/local/bin` is deliberately excluded: it is
user-writable on ordinary machines, which is the plantable case this
guard exists for. Anything else falls back to the opener line and the
format gate: fail closed, exactly the pre-fix behaviour for the form.

The pre-existing residual is unchanged and still documented: a bare `cat`
shadowed earlier on PATH is indistinguishable here, and is not a
meaningful boundary -- anyone able to plant an executable on PATH can run
`git commit` directly. This hook stays an authoring guard, not a security
control.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TadqrpTE2m6gCB7CaNNLcy

* fix(#3802): an option name carrying a shell expansion is unresolvable

Independent review, round 9, accept direction. Four more spellings, and a
change of strategy that is the actual point of this commit.

Rounds 6, 7 and 8 each tried to EMULATE what bash does to an argument
before git sees it -- round 6 removed quote characters, round 7 syntactic
backslashes, round 8 the `$` that introduces a dollar-quote -- and each
round review found another transform that had been missed. Round 9 found
four more. All measured on bash 3.2.57 and 5.3.15 against a real
repository, each with the plain spelling of the same command as its
control (refused, exit 2) and `git cat-file -p HEAD` for the subject git
actually recorded:

    -$'\155' WIP        hook 0, real subject `WIP`   ANSI-C octal -> m
    -$'\x6d' WIP        hook 0, real subject `WIP`   ANSI-C hex   -> m
    -`printf m` WIP     hook 0, real subject `WIP`   backtick substitution
    x= … -${x}m WIP     hook 0, real subject `WIP`   parameter expansion
    -? WIP              hook 0, real subject `WIP`   pathname expansion

and the same class through the cleanup guard, where git recorded a
75-character subject the length gate had measured as 72:

    --cle$'\141'nup=verbatim, --clean`printf up`=verbatim, --cle?nup=verbatim

The last two settle it. An option name finished by a PARAMETER expansion
depends on a variable's value at run time; one finished by a PATHNAME
expansion depends on the contents of the working directory. Neither is
derivable from the command string at any level of effort, so emulation
cannot be completed -- not "has not been completed yet". A fifth patch in
that direction would have the same shape as the previous four.

The rule is therefore no longer "normalise it and match the literal". It
is: an option NAME carrying a shell expansion or quoting construct is
UNRESOLVABLE, and unresolvable refuses. One rule covers every spelling
above and every spelling nobody has thought of yet, in the fail-closed
direction. The dequoting passes are kept rather than replaced: they still
normalise the deterministic removals, so the guards RECOGNISE
`--clean""up=` and `-\m` as the options they are instead of merely
refusing them, which keeps the existing rows meaningful.

Scope is unchanged and still pinned in both directions: the class is a
`-`-leading token whose characters up to the construct contain no `=`, so
a construct supplying a VALUE -- `--author="$(git config user.name)"`,
the backtick spelling, `--date="${NOW}"`, a glob character inside an
author string, a pathspec after `--` -- still resolves. Nine such forms
are asserted to pass beside the seven that must refuse.

The class is bracket-only and holds no backslash, per round 8: a POSIX
bracket expression has no escape mechanism, and a backslash written
inside one becomes a literal member on bash 3.2.

The new rows fail against the previous head with their own assertion
message, in a complete worktree with the lib built, not a copied hook.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TadqrpTE2m6gCB7CaNNLcy

* docs(#3802): disclose and pin the two spellings the round-9 class over-blocks

A scoped review of the round-9 class asked one question -- does it refuse a
conforming heredoc commit that the previous head accepted -- and found two
spellings that it does. Both measured on bash 3.2.57 and 5.3.15, previous
head 518d97b64 exit 0, current head exit 2:

    git commit -S$SIGNING_KEY -m <conforming heredoc>
    git commit -m <conforming heredoc> -- -*.txt

Disclosed and pinned rather than narrowed, for two reasons.

Narrowing is not available cheaply. Dropping the bare `$` member reopens
`-$xm`: with `xm=m` bash hands git a real `-m`, which is the parameter
expansion bypass the round-9 commit exists to close. Skipping tokens after
`--` means deciding where git's options end from a substring scan, which
is the class this file has already reverted twice for opening
accept-direction holes -- a `--` inside a quoted value (`--author "a -- b"`)
would truncate the window and hide a real trailing directive.

And the limits are narrower than they look, because in both cases the
spelling a developer actually reaches for still resolves:

    -S "$KEY"  and  --gpg-sign="$KEY"        resolve
    '-*.txt', "-*.txt", ':(exclude)-*.txt'   resolve

The pathspec one is worth stating precisely: a glob only reaches git AS a
pathspec when it is quoted, because an unquoted one is expanded by the
shell before git is executed. So the refused spelling is not passing a
glob to git at all, and the spellings that do are unaffected.

Refusing a commit git would take is the recoverable direction; accepting a
non-conforming subject is not. That is the trade this file already makes
everywhere else, and it is made explicitly here.

Nine rows pin the working spellings beside the three that refuse, so a
later narrowing cannot silently drop the cases that must keep working.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TadqrpTE2m6gCB7CaNNLcy

* fix(#3802): join backslash-newline continuations before the resolve guards

Round 9's Major, with a correction to its diagnosis.

The cited bracket classes at :223 and :260 no longer exist -- round 8
moved both into SEP_CLASS and GLUE_CLASS, and a lone backslash before -m
resolves (exit 0) at the reviewed head on both bash 3.2.57 and 5.3.15.
What refuses the repro is the NEWLINE a `\`-continuation carries: round
7's separator guard reads any newline in a window as a command boundary,
and `git commit \` newline `  -m "$(cat <<'EOF' …` was refused for that
reason. Round 8 disclosed it as a fail-closed limit; round 9 calls the
idiom common and the limit a Major, and it is fixed here.

It was left as a limit because "is this newline a continuation" looked
like the segmentation question this file has reverted twice. It is not:
bash's rule is local and character-level. A newline preceded by an ODD
run of backslashes is a continuation and bash removes both; an EVEN run
(`\\` then newline) is a literal backslash followed by a real newline,
which IS a separator. Both scan windows are joined that way immediately
after they are cut from the command and before any dequote copy is
derived, in three bash-3.2-safe parameter expansions: every `\\` pair is
parked on \x01, any backslash-newline that remains is a lone one and is
removed, then the pairs are restored.

Measured on both bashes, both directions:

    git commit \<nl>  -m <heredoc>                 2 -> 0   the fix
    git commit \\<nl>  -m <heredoc>                2 -> 2   literal \ + real separator
    git commit<nl>  -m <heredoc>                   2 -> 2   bare newline
    -m <heredoc>\<nl>suffix                        2 -> 2   bash glues it; the glue guard sees it glued
    git commit … \<nl>  --allow-empty<nl>echo -m … 2 -> 2   the REAL newline still separates

The prescribed `[\;&|]` is not taken: a backslash written inside a
bracket expression becomes a literal member on bash 3.2, which is the
round-8 defect from the other side.

Rows run under each bash on the machine. The fix row fails against the
previous head in a complete worktree with the lib built; the four control
rows were measured against that same head and were already refused, so
they pin existing behaviour rather than the change.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TadqrpTE2m6gCB7CaNNLcy

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-09-05 03:51:43 +00:00
Carlos Cativo
9b77320580 fix(#4076): add missing gsd-hook-version header to gsd-node-runner.sh (#4092)
* fix(#4076): add missing gsd-hook-version header to gsd-node-runner.sh

gsd-node-runner.sh was registered in MANAGED_HOOKS but shipped without a
gsd-hook-version header, so gsd-check-update-worker.js always classified it
as 'definitely stale' (a missing header is indistinguishable from a
pre-version-tracking file). Every install on an otherwise up-to-date
version showed a permanent, unclearable '⚠ stale hooks — run /gsd-update'
warning naming this one file.

Root cause: the build-hooks.js comment claimed the file is 'not a
registered hook' and 'staged verbatim — no templating', but it IS in
MANAGED_HOOKS (managed-hooks-registry.cjs:34) and install.js already
stamps {{GSD_VERSION}} into every .sh hook unconditionally, gsd-node-runner.sh
included. The comment contradicted both the registry and the installer's
actual behavior, and the header line itself was simply never added.

Fix: add the header (matching every other managed .sh hook's format) and
correct the comment so it no longer asserts the opposite of what the
registry and installer actually do.

Adds a regression test that iterates every MANAGED_HOOKS entry and asserts
it carries a header matching the worker's own detection regex, so a future
hook added to the registry without one fails CI instead of shipping
silently.

Fixes #4076

* chore(#4076): add changeset fragment for PR #4092

* fix(#4076): address review nits — drop unneeded exemption, fix blank line

Per @trek-e's review on #4092:
- tests/managed-hooks.test.cjs:96: the readFileSync call uses a loop
  variable (entry-derived hookPath), not a literal path, so
  local/no-source-grep's static literal-path detector never flags it —
  the allow-test-rule exemption comment was unnecessary. Replaced with a
  plain note explaining the source-read rationale.
- tests/managed-hooks.test.cjs:121-122: dropped a stray extra blank line
  before the bug #2136 section divider.

---------

Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-09-02 08:04:37 -04:00
Tom Boucher
91d5fdff6f chore(#3546): migrate hook advisory assertions onto typed output surfaces (#4167)
* chore(#3546): migrate hook advisory assertions onto typed output surfaces

Add additive typed fields to 5 hook scripts' PreToolUse/PostToolUse
advisory output alongside the existing additionalContext prose:

- gsd-read-guard.js: code ('READ_BEFORE_EDIT'), fileName
- gsd-context-monitor.js: severity ('warning'|'critical')
- gsd-prompt-guard.js: findings ([{ruleId, match}], module-local RULE_IDS
  + renderFinding mapper mirroring gsd-read-injection-scanner.js's #3523
  pattern)
- gsd-read-injection-scanner.js: severity ('LOW'|'HIGH'), source (its
  findings array already existed from #3523)
- gsd-workflow-guard.js: code ('WORKFLOW_ADVISORY') on the advisory leg,
  distinct from the existing force-add block leg's code

additionalContext stays byte-identical in every hook (verified per-hook
against the pristine HEAD version across a spread of payload shapes).

Migrates all 20 assertion sites named in the issue off
additionalContext.includes(...)/assert.match(...) substring-matching
onto the new typed fields, per CONTRIBUTING.md's prohibition on raw
text matching on test outputs.

Closes #3546

* test: fix undersized commit-class timeout in gsd-statusline.test.cjs's commitN helper

Surfaced by gsd-test on the #3546 checkpoint: `commitN()`'s loop called
gitOrThrow(['add','-A']/['commit',...]) without a timeoutMs override, so
each call used DEFAULT_GIT_TIMEOUT_MS (15s) -- a bound git-fixture.cjs's
own doc comment says is sized for plumbing reads (rev-parse/branch/log),
not write-heavy add/commit spawns. That file already documents the exact
same defect class from a prior incident (PR #3323) and exports
GIT_FIXTURE_TIMEOUT_MS (60s) for fixture-construction call sites -
commitN just wasn't using it. Observed failure: `git commit -m filler 9`
timed out under normal bench load, unrelated to any of this PR's own
diff (hooks/*.js + 5 other test files).

Not a flake: root-caused to the timeout bound being sized for the wrong
call class, per this repo's no-flakes rule.

* chore(#3546): backfill changeset PR number (#4167)

---------

Co-authored-by: sim <sim@local>
2026-09-01 22:32:54 -04:00
Tom Boucher
4c6643a8d7 fix(#3945): require a non-empty denominator for milestone-complete (#4164)
* test(#3945): 0-of-0 milestone counters must not render complete

Regression coverage for the string-truthiness vacuous equality in both
statusline renderers: '0' counters, boundary 1/1 vs 0/1 vs 1/0, compact
parity.

* fix(#3945): require a non-empty denominator for milestone-complete

Both statusline renderers compared the regex-captured string counters
directly, so '0' && '0' && '0' === '0' fired Scene 3 on the empty set.
Numeric coercion plus total > 0 restores the guard's intent; all
non-zero shapes and percent=100 render byte-identically.

* chore(#3945): add changeset fragment

* chore(#3945): backfill changeset pr number

---------

Co-authored-by: sim <sim@local>
2026-09-01 20:43:39 -04:00
Tom Boucher
d24e22b156 enhance(#3912): gsd-tools declares outcomes, pinned at v1 (#3983)
* enhance(#3912): gsd-tools declares outcomes, pinned at v1

ADR-3889 §4. Phase 6 already moved error()'s terminator onto the seam, so what
remained was the declaration — and the pin that makes it invisible today.

The census corrected two documented figures before any code changed.
ERROR_REASON has exactly 25 members (the ADR and epic were right; an earlier
note of mine claiming 23 was wrong and is corrected). And output({error}) is
**64 sites across 9 files, not the 60 ADR-2980 ratified** — the module shape
holds but the total drifted +4: frontmatter 7 not 6, phase 4 not 2, roadmap 3
not 2. That matters because this phase's criterion demands the pin be asserted
over the enumerated population rather than sampled; asserting over a stale 60
would leave four sites unpinned while claiming full coverage, which is the
shape of failure this epic exists to remove.

The issue does not state the fact that shapes the design: output() never
touches the exit code. Confirmed by reading it — it writes fd 1 and returns.
So a declared outcome for those 64 sites had nowhere to be READ. The mapping
was never the work; wiring somewhere for the declaration to land was.

The seam already existed twice over. cli-exit.cts holds two globalThis-Symbol
cells, each because the module is emitted to three locations and a module-level
`let` would let instances disagree, and runMain already maps a code returned by
main(). A third cell inherits that solution. output() records DEGRADED for any
{error} payload — key-order agnostic, which is exactly why the "42 sites"
figure undercounts — and runMain projects the cell only when main() returns
nothing, so an explicit return still wins.

error() maps its reason through a table over the closed 25-member enum, leaving
all 278 call sites untouched; 226 of them pass no reason at all. The version
gate lives in error(), NOT in projectOutcome: registered names are
version-invariant there, so mapping a reason straight through would make USAGE
project to 64 under v1 and break the pin on its first line. projectOutcome is
left exactly as Phase 2 shipped it, DEGRADED's 0/80 asymmetry included.

Proven rather than asserted. v1 is byte-identical across three real CLI paths —
config-get plain, config-get --json-errors, and an output({error}) path —
matching exit code and exact bytes against the pre-change build. Under
GSD_EXIT_CONTRACT=v2 the same commands now exit 66 (CONFIG_KEY_NOT_FOUND ->
NO_INPUT) and 80 (DEGRADED), both looked up through the registry. An
anti-vacuity test pins that v1 and v2 genuinely differ for at least one reason,
because without it a mapping where everything projects to 1 under both versions
would satisfy every other assertion and the declaration would be theatre.

A1 iterates all 25 enum members and A3 asserts over the measured 64-site
population, so a 26th reason or a 65th site fails until it is given a mapping —
the drift guard this phase needs, given ADR-2980's own count had drifted +4
unnoticed.

Verification runs on the remote runner.

Refs #3912

* fix(#3912): the outcome cell must never lower an exit code

The remote run caught a fail-open that this phase introduced, in the phase
whose entire purpose is removing fail-opens.

`state validate --strict` on a missing STATE.md exited **0** where it must exit
1. Mechanism: `runMain` projected the pending outcome whenever `main()` returned
void, and under v1 DEGRADED projects to 0 — so a `process.exitCode` already set
non-zero by the command was clobbered down to success. Confirmed live against a
fixture, before and after.

This refutes a review conclusion recorded earlier in this phase, that the cell
was "fail-closed and can never mask a failure as success". It could, and did.
Recording that plainly so the assumption is not repeated: the cell's danger was
never only that it might add a failure — it was that projecting it
unconditionally overwrites whatever decision came before.

Projection is now guarded: it may set a code only when none is set, and an
already-non-zero exit code always wins. The full precedence — explicit `main()`
return, then an existing non-zero exitCode, then the declared outcome — is
written at the projection site. A regression test drives a void return with a
pre-set non-zero code and a pending DEGRADED, and fails against the pre-fix
build.

The second failure was my test encoding the wrong contract, not a code defect.
It asserted `output({found:false, error: undefined})` records DEGRADED because
the KEY is present. `JSON.stringify` drops undefined, so the payload the user
receives is `{"found":false}` — carrying no error at all, and calling that
degraded would hand back exit 80 under v2 for output that reads as clean. The
discriminator is a serializable error VALUE, not key presence. The test now
pins `{error: undefined}` as explicitly NOT degraded, and the design doc's
wording is tightened to match.

Verification runs on the remote runner.

Refs #3912

* docs(#3912): the versioned exit contract, and a flag defect the docs found

Diataxis pass for Phase 8, plus a real fix that only surfaced because writing
the how-to meant running its own examples.

The docs. ADR-2980's "Revisit if" clause asked for exactly the versioned
projection this phase provides, so it gets an amendment naming #3912 /
ADR-3889 section 4 as that boundary: v1 stays 0 byte-for-byte, v2 projects
DEGRADED to 80. The amendment also records the count drift rather than
restating a stale figure — the ADR ratified 60 output({error}) sites in 9
modules; the AST-measured population is 64 across the same 9 (frontmatter 7
not 6, phase 4 not 2, roadmap 3 not 2). The pin is asserted over the
enumerated 64. json-errors.md gains the outcome-declaration reference,
including the precedence order a review pass got wrong and the suite refuted:
an explicit main() return, then an already-set non-zero process.exitCode, then
the declared outcome. Projection may only ever set a code, never lower one.

A how-to is owed here and is written, not skipped. Under v1 nothing changes,
so the audience is an operator opting into v2 and needing to know what the
codes mean for a CI gate — a migration, which is how-to shaped. It covers
turning v2 on, the code table, why 80 is "ran and reported a condition" rather
than a crash, and how to split a gate that treats any non-zero as fatal. No
tutorial: there is no new entry point to learn, and under the default contract
a reader would be walked through observing nothing.

The defect. Running the how-to's own Step 1 example returned

    $ gsd-tools --exit-contract=v2 state validate --strict
    Error: Unknown command: --exit-contract=v2          (exit 64)

while the same flag trailing the subcommand worked and exited 80. The flag
half-worked, by argv position. resolveContractVersion scans argv
non-destructively, so the token survived into the dispatcher, which treats
argv[2] as the command name. --json-errors had already solved precisely this
at gsd-tools.cjs:4455, under a comment naming the hazard verbatim: "The argv
splice must happen here too, otherwise the dispatcher below sees
--json-errors as an unknown command." The later flag never got the same
treatment.

Fixed rather than documented around: the version is resolved first — which
memoizes the cell and makes an invalid value throw early — and then every
--exit-contract= token is spliced out of the dispatcher's argv copy.
--exit-contract is now listed in TOP_LEVEL_USAGE, where it never was. The
regression test pins leading position, trailing position, agreement between
the two, and a loud failure on v3 rather than a silent fall back to v1.

Neither review engine would have caught this: the defect is invisible in the
diff, because the diff does not touch argv handling. It surfaced only from
running the documentation's own example. Writing a how-to is an execution pass.

Verification runs on the remote runner.

Refs #3912

* fix(#3912): the flag splice has to run before the run-with-timeout return

An isolated review of the previous commit found that the fix did not deliver
what it claimed, and that two of its own tests were weak. All three findings
reproduced by execution before any change was made.

The fix was placed below a return. main() intercepts `run-with-timeout` at
gsd-tools.cjs:4436 and returns from there — above both the --json-errors block
and the --exit-contract splice added in the previous commit. So the flag still
died in leading position for that one command:

    $ gsd-tools --exit-contract=v2 run-with-timeout 5 -- node -e "..."
    Error: Unknown command: run-with-timeout        (exit 64, child never ran)

The previous commit message and the test's describe-block both claimed
position-independence unconditionally. That was an overclaim, not a gap left
open, and it is the part worth naming: the fix was verified by hand on the
commands I happened to think of, and `run-with-timeout` returns before the
code I was verifying.

Both global-flag blocks now run above the interception, with a comment naming
it so a later edit cannot slide them back down. Moving --json-errors up fixes
the identical pre-existing bug for that flag, verified failing beforehand
(exit 1, sdk_unknown_command). Fixing the sibling is deliberate: same defect,
same block, and a known-broken twin next to a fixed one is not a resting state.

Two tests were not pulling their weight. The invalid-value test was vacuous —
it passed against the pre-fix build, because `--exit-contract=v3` already
exited 1 there and already printed the resolve error lazily through
error() -> getContractVersion. Both its assertions held before the fix, so it
pinned nothing. The real discriminator is that the pre-fix build emits BOTH
"Unknown command: --exit-contract=v3" and the resolve error, while the fixed
build emits only the latter; the test now asserts that absence.

The leading-position and leading==trailing tests asserted proxies — "not 64",
"no Unknown command", "the two agree" — none of which pin a value, and all of
which would survive both positions being identically broken. With a .planning
directory and no STATE.md, state-snapshot exits exactly 80 under v2 and 0
under v1 in both positions. Those numbers are pinned now. The multi-token case
the descending splice loop exists for is covered too, and run-with-timeout has
regression tests for both flags.

The lesson is narrower than "test more". Hand-verifying the production
behavior does not verify that the test would have caught its absence. The
pre-fix binary has to be run against the test's own assertions.

Investigated and deliberately not changed: splicing before --cwd parsing
degrades one diagnostic from "Missing value for --cwd" to "Invalid --cwd:
<path>", but that is pre-existing — verified on the pre-fix build via
--json-errors, which already did it. This change joins the pattern rather than
creating it, and both forms exit 64 on malformed input either way.

Verification runs on the remote runner.

Refs #3912

* chore(#3912): backfill changeset pr numbers to 3983

* test(#3912): pin the reason-table invariant as set equality, not a count

A graph-backed review flagged the unchecked lookup in
expectedErrorCode3912. Investigated by execution: the drift guard DOES
hold — for an unmapped reason under v2 the production error() yields 1
while the table yields undefined, so the assertion fails. Not a
correctness defect, and deliberately NOT made tolerant, since a tolerant
lookup would destroy the guard.

Two real problems remained. The guard asserted the wrong invariant: it
counted the TABLE's keys at 25 rather than checking they match the
ENUM's values, so a renamed member keeps the count at 25 and slips past,
and a 26th member leaves the table at 25 and slips past too. Both were
then caught only indirectly, by an undefined mismatch producing 'must
exit undefined'. It is now a sorted set equality, so the failure names
the specific missing or extra reason.

And the comment above it described a '?? FAIL' fallback that does not
exist anywhere in the function. It now states what the code actually
does, verified by running it rather than by reading it.

Refs #3912

---------

Co-authored-by: sim <sim@local>
2026-08-28 08:09:05 -04:00
Tom Boucher
5ad708aa4e fix(#3972): one worktreesOptedOut ladder in planning-workspace, shared by resolver and guard (#3979)
* test(#3972): the guard fallback must share the opt-out ladder

* fix(#3972): one worktreesOptedOut ladder in planning-workspace, shared by resolver and guard

* test(#3972): without a workstream the root config is the effective config

* fix(#3972): guard the whole ladder body — malformed env values degrade, never throw

* chore(#3972): changeset fragment (pr number backfilled after PR creation)

* chore(#3972): backfill changeset PR number (3979)

---------

Co-authored-by: sim <sim@local>
2026-08-28 01:53:23 -04:00
Tom Boucher
2ea5efc151 enhance(#3911): hooks declare their crash policy (#3960)
* enhance(#3911): give hooks an exit seam that needs no build

ADR-3889 Phase 7 foundation. The 19 shipped enforcement hooks hold 91 of the
epic's 128 terminators and cannot reach `terminateNow` today.

The obvious route — requiring `gsd-core/bin/lib/cli-exit.cjs`, as
gsd-agent-isolation-guard.js already does for two other modules — is rejected.
That precedent carries its own warning (#3582): those files are tsc output,
gitignored and absent on a raw plugin-marketplace or git-clone install, so the
hook must first call ensureRuntimeBuild() to self-heal. Making the module a
hook needs IN ORDER TO TERMINATE depend on a build inverts the dependency, and
its failure mode is precisely the fail-open this phase exists to remove: a
guard that cannot terminate cannot deny. `lint-hooks-runtime-build-seam`
already encodes that concern, and Design B would have had to add an
ensureRuntimeBuild() call to all 19 hooks to satisfy it.

So `hooks/lib/` becomes a third emit location for cli-exit and a fifth for the
registry, preserving the invariant `src/cli-exit.cts`'s own header states: it
imports nothing but node:fs and its sibling registry, and the generator
dual-emits that sibling alongside each copy so a relative require resolves next
to whichever copy loaded it. Shipping needed no change — build-hooks.js already
declares HOOKS_SUBDIRS_TO_COPY = ['lib'].

Proven, not asserted: the two files are copied into an otherwise-empty tmpdir
and a child process requires them and terminates — PASS exits 0, HOOK_DENY
exits 2 with the payload on both stdout and stderr. That test fails the moment
the hooks copy gains a require reaching outside hooks/lib/.

Also fixed inline: the registry's fifth target let any `--write` test overwrite
the real committed hooks/lib/exit-code-registry.js, because the test helper
derived only three of the other output paths. It now redirects all five, and a
regression test asserts every committed artifact is byte-identical after a
redirected write.

Install-tree goldens pick up the two new shipped paths across 11 runtimes —
insertions only, no removals. lint:ci was green while they were stale, so this
was found by regenerating rather than by a gate.

Verification runs on the remote runner.

Refs #3911

* enhance(#3911): declare a crash policy, and migrate the write guard

Adds `hooks/lib/hook-exit.js` — the hook-facing vocabulary over `terminateNow`,
hand-written because the cli-exit copy beside it is generated:

  allow(payload)          exit 0
  deny(payload, stderr?)  exit 2
  crash(onCrash, payload) whichever the hook DECLARED

`crash()` takes the policy as a required argument with no default, which is the
whole mechanism: fail-open by accident stops being expressible. A hook must
name ALLOW or DENY at the call site, and an unrecognized value terminates
INTERNAL rather than guessing. Fail-open stays legal; fail-open by omission
does not.

`gsd-write-guard.js` is the first hook migrated, all 12 sites, and it exposed a
gap in the seam. `terminateNow`'s doc comment justified its fd-2 write by
citing this hook's `emitBlock` — but modeled it as sending the same bytes to
both streams, when `emitBlock` actually sends full JSON to stdout and only the
bare `reason` string to stderr, because Kimi's hook bus feeds stderr verbatim
back to the model. Migrating as written would have turned a readable sentence
into a JSON blob for Kimi-backed agents.

#3911 requires both "all 19 hooks terminate through terminateNow" and "no
hook's effective default changes". Those are jointly satisfiable only by
teaching the seam to carry a distinct stderr payload, so `terminateNow` gains
an optional third argument: omitted, behavior is byte-for-byte what it was; a
string is written raw, which is exactly the Kimi case. The doc comment's
inaccurate claim about emitBlock is corrected in place.

Proven rather than asserted: the pre-migration file is reconstructed from HEAD
and driven with the same catastrophic-shrink payload as the migrated one —
exit code, stdout and stderr all byte-identical.

Verification runs on the remote runner.

Refs #3911

* enhance(#3911): all 19 hooks terminate through the seam

Migrates the remaining 18 enforcement hooks onto allow/deny/crash. An AST walk
now reports zero `process.exit(` call sites across every `hooks/*.js` — down
from the 91 the census measured.

Each hook with an outer catch declares its policy once, at module top, with the
reason that policy is right for that specific guard: a read guard that cannot
scan must not block the read; a statusline that renders every prompt must
degrade rather than crash; an injection scanner must not retroactively block a
result already returned. Those sentences are the deliverable — they are what
turns fail-open-by-accident into fail-open-on-purpose. No hook's effective
default changed.

Wiring exposed two defects, both fixed here rather than noted.

A SECOND stdout/stderr-splitting site turned up in `gsd-workflow-guard.js`'s
`emitForceAddBlock`, matching the pattern already known from the write guard —
full JSON to stdout, bare reason to stderr for the Kimi bus. It uses the
`stderrPayload` argument added in the previous commit, which is now carrying
its second real caller rather than one special case.

More seriously, `terminateNow` emitted both streams inside ONE try, so a
payload that failed to serialize aborted before the stderr write ever ran. The
two windsurf guards write nothing to stdout on a block and only a reason string
to stderr, so `deny(undefined, reason)` exited 2 with EMPTY stderr — a deny
that silently loses its reason, which is the exact "fails with success" class
this epic exists to close. The streams are now emitted independently, each with
its own guard, and `undefined` means "nothing to write for this stream" rather
than an error. Regression tests inject a throwing write on one fd and assert
the other still receives its payload; they fail against the single-try version.

Byte-identity was proven per hook, not assumed: each pre-change file is
reconstructed from HEAD and driven side by side with the migrated one across
its normal path, its deny path, malformed stdin and empty stdin — exit code,
stdout and stderr compared.

Verification runs on the remote runner.

Refs #3911

* enhance(#3911): harden the three shell hooks, and pin every hook's policy

`gsd-phase-boundary.sh`, `gsd-session-state.sh` and `gsd-validate-commit.sh`
gain `set -euo pipefail`.

The expected hazard did not materialize, and that is worth recording: every
intentionally-non-zero command in all three is already the condition of an
`if`/`elif`, which `set -e` never fires on, and none of them reads a
possibly-unset variable or pipes through a grep that may legitimately match
nothing. No `|| true` guards were needed. Each hook was still checked
command-by-command before the flags went in rather than after.

Twenty-one before/after cases across the three hooks — disabled and enabled,
planning and non-planning, missing STATE.md, malformed JSON, the Kimi payload
shape, quoted and unquoted `-m`, valid and over-long Conventional Commits —
all match on exit code, stdout and stderr.

The hardening is shown to actually fire, not merely added: with a stubbed
`node` that fails at the JSON-emit step, phase-boundary and session-state go
from silently exiting 0 with empty stdout to failing visibly with the error
surfaced. No such case could be constructed for `gsd-validate-commit.sh`,
whose every statement already sits inside an if-condition — recorded as
unproven rather than claimed.

`tests/hooks-crash-policy.test.cjs` adds the per-hook coverage the issue asks
for, table-driven over all 19 hooks rather than 76 hand-written cases: normal
allow, deny where a deny path exists, crash-honors-the-declared-policy, and an
unclosed-stdin case — the one `process.exitCode` structurally cannot serve. The
deny assertions encode each hook's ACTUAL stream split rather than a uniform
shape, since four of the six deliberately differ. A drift guard enumerates
`hooks/*.js` and fails if a terminating hook is ever added without a row.

Writing those tests surfaced two hooks that emit a block decision in their JSON
body and exit 0. Both were checked rather than assumed, and neither is a
fails-with-success: `gsd-read-injection-scanner.js` is PostToolUse, where the
tool has already run and exit 2 has no meaning, and `gsd-cursor-subagent-start.js`
follows Cursor's JSON-body protocol. They are deliberately left alone — a
mechanical sweep to `deny()` would have broken exactly these two.

Verification runs on the remote runner.

Refs #3911

* fix(#3838): the commit validator says when it could not validate

#3911 claims to subsume #3838. Measurement said otherwise, so this closes it
for real rather than by assertion.

`set -euo pipefail`, added earlier on this branch, does NOT fix #3838: bash
exempts a command used as an `if` condition from `set -e`, and all three of the
hook's swallow-and-pass sites are exactly that shape. Verified against the
hardened hook with a node shim that fails only the classifier call — a
non-conforming commit still exited 0 with empty stdout AND empty stderr,
indistinguishable from "your commit conforms". That is the defect verbatim.

All three sites named in #3838 now capture the real exit status instead of
consuming it as a condition, and each distinguishes its genuine negative from
"could not run":

- the classifier: 0 = is a git commit, 1 = genuinely not one, anything else =
  could not classify. Its `node -e` now wraps the require and the call in
  try/catch and exits 3 on a throw, so a broken require chain can never be
  mistaken for `isGitSubcommand` legitimately returning false — which is the
  arm that matters, since `token-scanner.cjs` is a gitignored build artifact
  and a fresh checkout lands there.
- the opt-in config read and the JSON command extraction get the same
  treatment.

On "could not run" the hook emits a diagnostic to stderr naming which check
failed and why, then exits 0. The issue confirms this is safe — it is a
PreToolUse hook, so stderr does not disturb the JSON protocol — and ranks it
the smallest sufficient fix. The gate still fails open, but it can no longer do
so silently, which is the whole complaint: a validator that disables itself
quietly costs more than one that is absent, because it is trusted.

Both controls are unchanged and pinned by tests: a conforming commit still
passes silently, a non-conforming one still exits 2 with its existing block
payload. The defect test asserts stderr is non-empty and names the failure; it
fails against the pre-fix hook.

Verification runs on the remote runner.

Refs #3911, #3838

* docs(#3911): document the hook crash-policy contract

Reference and Explanation via a new docs/features fragment (FEATURES.md is
generated from it), INVENTORY rows for the three new hooks/lib files, and an
ARCHITECTURE note on the hooks section.

How-To: docs/how-to/declare-a-hook-crash-policy.md, indexed from docs/README.md
— a hook author now has to choose and declare a crash policy, which is more
than one step and crosses into which harness protocol their hook speaks. It
covers allow/deny/crash, writing an ON_CRASH reason that is actually useful,
when a deny needs a distinct stderr payload, the two hooks whose harness reads
a JSON-body decision and must NOT use deny(), and what to do when a check
cannot run at all — with #3838 as the worked example.

Refs #3911

* test(#3911): prove the seam actually ships, and stop hand-rolling temp cleanup

Two review findings.

The acceptance criterion 'hooks/dist/** stays in parity via the build seam
(lint:hooks-runtime-build-seam)' was misstated and unmet: that lint checks
something else — that a hook requiring a compiled gsd-core/bin/lib module also
calls ensureRuntimeBuild(). Nothing exercised that the three new hooks/lib
files reach hooks/dist/lib at all. That gap is not theoretical: #770 is a
recorded ship-blocking bug where a new hook never shipped because a copy list
missed it. The suite now builds dist through the repo's own ensureBuiltHooks(),
byte-compares each shipped copy against its source, and spawns a child that
requires the SHIPPED dist copy and denies — which is what catches a copy that
exists but cannot resolve its sibling registry.

gsd-validate-commit.sh hand-duplicated mktemp/run/rm three times; one idempotent
trap on EXIT replaces them, guarded so cleanup cannot alter the exit status.
Behavior-neutral across five cases, with temp-file counts taken before and
after each run.

Refs #3911

* fix(#3911): stage transitive hook lib requires, not just one level

The remote run returned 7 failures across 3 real causes.

The important one is a PRODUCTION bug this phase exposed rather than caused.
`writeCursorHooksJson` scanned each hook script for `./lib/X` requires exactly
one level deep and never re-scanned the lib files it staged for their own
sibling requires. Nothing had a transitive lib dependency before, so the gap
was invisible. Adding hook-exit.js -> cli-exit.js -> exit-code-registry.js
made real Cursor installs ship a bundle that dies at require time with
MODULE_NOT_FOUND. It now walks to a fixed point, and a real installed Cursor
hook runs to completion.

The staging harness in shared-hooks-dir-resolution hand-copied its fixture, so
the injection scanner crashed at require time and its exit-1 was being read as
a policy decision. Migrated to copyScriptWithDeps, which walks the require
graph — the repo's recorded rule for this class, since adding another
copyFileSync keeps it alive for the next person.

The missing-lib-source test in cursor-hook-workspace-roots hardcoded which lib
file it expected to be named in the abort message; the same throw now fires for
a different file first. Its assertion is unchanged in substance — staging still
must abort rather than ship a broken hook — only the name is no longer pinned.

The last one was my own test asserting an uppercase reason code. Measured
against origin/next: the pre-change hook emits the same lowercase
'config_unreadable', so the test was wrong, not the migration. Corrected to the
real value rather than making the code match the test.

Verification runs on the remote runner.

Refs #3911

* chore(#3911): regenerate the cursor install-tree golden

The staging fix means a Cursor install now correctly carries the two
transitive lib files it was silently missing. Additive only — no path was
removed. The golden diff is the evidence the packaging defect was real.

Refs #3911

* chore(#3911): backfill the changeset PR number

Refs #3911

* fix(#3911): a git probe that timed out is not a negative

A macOS CI lane failed three deny cases at 2084ms, 2112ms and 2177ms — just
past the 2000ms budget these hooks give their git probes. The three that passed
took 72ms, 595ms and 651ms. Under shard contention `git rev-parse` overruns,
the hook reads the non-zero result as "not a git repo", and allows with exit 0
and empty stdout AND empty stderr. Under load, the guards silently stop
guarding. That is ADR-3889's thesis exactly, sitting inside the security hooks
this phase is about.

The repo had already recognized the class in one place — gsd-cursor-subagent-start.js
fail-closed-denies on `git_timed_out` (#3045) — but nowhere else.

`hooks/lib/git-probe.js` classifies a probe's outcome, distinguishing a real
non-zero exit from ETIMEDOUT, a signal kill, and a spawn failure, rather than
folding all four into `status !== 0`. Three guards route their eight git probes
through it.

The resolution is the same shape #3838 took, and the same one that issue
endorsed as smallest-sufficient: fail open, but loudly. **No exit code changes
on any path** — a developer on a loaded machine is still not blocked, which
keeps #3911's declaration-pass contract intact for exit codes. What changes is
that the hook now says on stderr which probe could not answer, instead of
presenting silence as a clean verdict.

Scope was checked across every hooks/*.js, not just the three that failed:
gsd-agent-isolation-guard spawns no git; gsd-statusline's two probes gate only
a cosmetic display segment, not an allow/deny decision, and are left alone.

The C2 deny assertion was a real-race test — it demanded exit 2 while a slow
git legitimately yields 0. It now requires the hook to either deny, or allow
with a diagnostic naming the probe that could not run; a silent allow still
fails, so the assertion is not vacuous. A deterministic regression stubs git on
PATH to sleep past the budget rather than waiting for load to reproduce it.

Verification runs on the remote runner.

Refs #3911

* test(#3911): a PATH shim cannot intercept the hooks' git spawn on Windows

The deterministic timeout regression stubbed git on PATH and asserted the
guard reports rather than silently allows. It passes on Linux and macOS and
failed on Windows in 83ms and 176ms — the stub was never invoked at all.

Mechanism: the hooks call spawnSync('git', args) with no shell:true, so on
Windows CreateProcess resolves git.exe only and never a PATH .cmd shim. The
git.cmd branch could not have worked and is removed rather than left implying
a Windows path that does. Adding shell:true to the hooks to serve a test would
change product behavior and widen an injection surface, so the case is skipped
on win32 only, with the mechanism written into the skip reason so a future
reader does not 'fix' it that way.

Linux and macOS keep the coverage, and macOS is where the underlying fail-open
was actually caught.

Refs #3911

---------

Co-authored-by: sim <sim@local>
2026-08-27 22:21:10 -04:00
Tom Boucher
9410f7e6e6 enhance(#3897): ADR-3473 §8.3 rungs 2-4 — runtime marker, derived Codex sandbox, short-form depends_on (#3941)
* test(#3897): failing-first coverage for §8.3 rungs 2-4

ADR-3473 §8.3 has four rungs; #3883/PR #3896 shipped the first. This pins the
other three RED before any fix.

Rung 2 — the install marker has four readers and resolveRuntime is not one.

  resolveRuntime resolves GSD_RUNTIME > config.runtime > 'claude' and reads no
  marker at all, while bin/install.js writes one (#2297) and FOUR hand-rolled
  readInstallRuntimeMarker copies exist: src/model-resolver.cts:65 (cached, with
  test seams), hooks/gsd-agent-isolation-guard.js:112, and TWICE in
  hooks/gsd-cursor-subagent-start.js at :346 and :355. Four copies of one rule.

  Fixtures and seam names mined from PR #3382 rather than re-derived; it
  implemented this rung and was closed "not on the merits".

Rung 3 — the sandbox map, and the fallback that was the real defect.

  Measured across all 35 files in agents/, deriving workspace-write iff tools:
  declares Write or Edit:

    - all 11 CODEX_AGENT_SANDBOX entries derive to their mapped value exactly,
      zero disagreements — the map carries nothing the contract does not
    - 24 roles fall through `|| 'read-only'`, of which 16 declare Write or Edit

  So the map is redundant and the silent fallback is the defect. The maintainer
  chose to derive but hold those 16 at read-only pending the question of whether
  Codex enforces sandbox_mode or merely advises; HALT.md records it.

  T20 asserts the emitted sandbox_mode PER ROLE against a captured baseline, not
  in aggregate — an aggregate passes while one role silently widens, which is
  the proxy-instead-of-identity shape this repo names. T24 and T25 fail on a
  stale hold, so the hold list cannot rot into the subset map being deleted.

Rung 4 — shortFormToId, recovered rather than invented.

  I nearly reported this as another wrong §8.3 claim: `git log -S shortFormToId`
  returns only documentation commits. That was the wrong instrument. Direct
  inspection of sdk/src/query/phase.ts at 11918dcc3^ shows five occurrences, and
  the tests match that code rather than a guess at its semantics — including
  first-write-wins on a duplicate short form.

  T43 asserts at the consumer's output: the emitted `waves` map from the real
  CLI, which pre-fix collapses to {"1":[...]} because every short-form edge is
  dropped. A unit assertion on resolveDependencyId would have passed throughout
  this defect's life.

Observed RED, this tree:
  rung 2   11/11 fail — no marker rung, no seams
  rung 3   T23,T24,T25,T26,T30 fail; T28 fails (validate agents passes a TOML
           whose sandbox_mode disagrees — it checks presence only)
  rung 4   T42,T44 fail; T43,T49 fail with waves collapsed to a single wave 1

Green and staying green: T20/T21/T22/T27 as captured baselines, #3885's
unresolvable-token warning and wave-verdict suppression, and #3785's
display-mapping passthrough. If the third tier over-reaches, those go red — that
is their job.

Disclosed weakness: T45 (a canonical id with no dash is not short-form indexed)
cannot be isolated behaviorally, because planMap always masks it. It is a
non-crash boundary pin, weaker than the other rows, and is recorded as such
rather than presented as equivalent.

Design:      .gsd/phase/feat-3897-adr3473-83-rungs/40-design.md
Test matrix: .gsd/phase/feat-3897-adr3473-83-rungs/50-test-matrix.md
Decision:    .gsd/phase/feat-3897-adr3473-83-rungs/HALT.md

Refs #3897

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

* enhance(#3897): §8.3 rungs 2-4 — one marker reader, a derived sandbox, the third depends_on tier

ADR-3473 §8.3 has four rungs. #3883/PR #3896 shipped the first. These are the
other three.

Rung 2 — the install marker had four readers, and resolveRuntime was not one.

  resolveRuntime resolved GSD_RUNTIME > config.runtime > 'claude' and read no
  marker, while bin/install.js writes one (#2297) and four hand-rolled
  readInstallRuntimeMarker copies existed: src/model-resolver.cts (cached, with
  seams), hooks/gsd-agent-isolation-guard.js, and twice in
  hooks/gsd-cursor-subagent-start.js.

  model-resolver's was already the house idiom, so it was promoted rather than
  replaced: src/runtime-slash.cts now owns it, and model-resolver plus both
  hooks delegate. The hooks reach it through ensureRuntimeBuild(), the seam
  lint-hooks-runtime-build-seam enforces. No import cycle existed - checked
  both directions before moving anything.

  The marker is the THIRD rung: env > project config > marker > 'claude'.

  N1 was checked rather than assumed, and my first reading of it was wrong. A
  marker holding an unknown name comes back essentially verbatim, which looked
  like a validation gap. Measured against the env rung with the same inputs -
  including "../../etc/passwd" and "claude;rm -rf /" - the two are identical,
  because they share resolveRuntimeNameFromCandidates. N1 asks for exactly that,
  and it is met. The residual (the shared normalizer normalizes shape, it does
  not validate against the known-runtime set) is pre-existing on the env rung
  and plausibly deliberate, since a new runtime should not need a code change.
  The marker also does not widen the trust boundary in any real sense: it lives
  inside the install tree beside the code, so anyone who can write it can write
  runtime-slash.cjs itself.

Rung 3 — the map was redundant; the silent fallback was the defect.

  Measured across all 35 files in agents/, deriving workspace-write iff tools:
  declares Write or Edit: all 11 CODEX_AGENT_SANDBOX entries derive to their
  mapped value exactly, zero disagreements. The map carried nothing the contract
  did not already have, so it is DELETED rather than reconciled. What was
  actually broken is `|| 'read-only'`, which silently under-granted 24 of 35
  roles.

  16 of those 24 declare Write or Edit and would widen under derivation. Per the
  maintainer's decision (HALT.md), they are held at read-only pending the
  question of whether Codex enforces sandbox_mode or merely advises. Emitted
  TOML is therefore byte-identical for all 35 roles - asserted per role, not in
  aggregate, because an aggregate passes while one role silently widens.

  The hold list self-invalidates. A hold whose role no longer derives broader
  fails, and so does a hold naming a role with no agents/<name>.md. Without
  that it would rot into exactly the hand-maintained subset map being deleted,
  and this commit's own ledger claim would become false over time. Both cases
  were proved by injecting them and watching them throw.

  Two committed tests asserted the deleted map's existence and contents. They
  were pinning the thing being removed, so the tests moved rather than the
  production code: the 11 role-value pairs survive as a test-local
  PRE_3897_CODEX_AGENT_SANDBOX baseline, and the assertions now drive the real
  derivation against real agents/*.md. The coverage is preserved; only its
  source moved out of production code.

  validate agents gains checkCodexSandboxPosture, mirroring the existing
  checkCodexModelPosture: each installed TOML's sandbox_mode must equal the
  role's expected value, failing with role, expected and found. It previously
  checked file presence and manifest completeness only, so a TOML whose
  sandbox_mode disagreed passed.

Rung 4 — shortFormToId, recovered rather than invented.

  I nearly reported this as another wrong §8.3 claim: git log -S returns only
  documentation commits. Wrong instrument. sdk/src/query/phase.ts at 11918dcc3^
  carries five occurrences, and the implementation here matches that code rather
  than a guess at its semantics - including first-write-wins on a duplicate
  short form, deterministic from the sorted plan order.

  It resolves the bare plan number: depends_on: ["01"] now reaches
  26-01-auth-hardening. That is a control-flow change, not a diagnostic one -
  plans that silently collapsed into a single wave 1 now execute in their
  declared waves, and execute-phase.md consumes those wave values.

  In-phase only, by construction: the map is built from this phase's rawPlans,
  so a same-named short form in another phase does not resolve.

  #3785's display-mapping passthrough and #3885's unresolvable-token warning and
  wave-verdict suppression are untouched and stay green. If the third tier had
  over-reached, those are what would have caught it.

Refs #3897

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

* fix(#3897): close a fail-open I introduced, and wire the posture check to its command

Two blockers from review. Both are mine, and one is a security regression my own
change created.

1. A held role could escape its hold by editing its own frontmatter.

  The Codex install loop set the sandbox identity from the agent's frontmatter
  `name:` field rather than from its filename, so the hold lookup keyed off a
  value the file itself declares:

    deriveCodexSandboxMode('gsd-doc-writer',   <real file>)          -> read-only
    deriveCodexSandboxMode('gsd-doc-writer-x', <same file, name: edited>) -> workspace-write
    deriveCodexSandboxMode('GSD-Doc-Writer',   <same file, name: recased>) -> workspace-write

  What makes this a blocker rather than a nit is the DIRECTION. The deleted
  CODEX_AGENT_SANDBOX map had the identical lookup-key quirk, but it was an
  allowlist: an unmatched key fell back to read-only, which is safe. The new
  scheme derives workspace-write from the tool contract and uses the hold as a
  subtraction, so the same mismatch fails OPEN. I converted a fail-closed quirk
  into a fail-open one and did not notice; the isolated reviewer proved it by
  execution.

  Neither safety net caught it. validateCodexSandboxHolds only checks that
  <key>.md exists, never that a file's derived identity matches its key.
  checkCodexSandboxPosture looks the canonical source up by the installed TOML's
  filename, finds nothing for a renamed agent, and treats it as a custom
  non-roster agent — silently no violation.

  The identity is now the FILENAME STEM, which is what validateCodexSandboxHolds
  already validates and what an attacker editing frontmatter cannot change
  without renaming the file — at which point the existing validator catches it.
  The lookup is case-insensitive so a recase does not slip past either. The
  frontmatter name still drives the TOML body and filename, unchanged; only the
  sandbox identity moved.

  All 35 roster files were checked: name matches filename stem everywhere, so a
  stricter "they must agree or throw" invariant would have been safe against real
  content. It is deliberately NOT added — it would abort an install on a tampered
  file where emitting a correctly-derived read-only TOML is the safer outcome.
  Recorded as a fork rather than decided silently.

2. checkCodexSandboxPosture was exported and never called.

  cmdValidateAgents (src/verify.cts) called checkAgentsInstalled and
  checkCodexModelPosture only; grep for the sandbox check in that file returned
  nothing. So criterion 3 — "validate agents fails on semantic drift, not only on
  missing files" — was unmet, and `validate agents` behaved exactly as before.
  That is ADR-3473 Decision 2's named shape: a declared policy with no executor.

  It also meant the T28 test asserted at the helper's return value while the
  COMMAND stayed broken — the ADR-3180 Decision 4(b) failure this epic exists to
  close, committed by me while enforcing it elsewhere in the same epic.

  Now wired as an additive `sandbox_posture` field beside `codex_posture`,
  following the sibling precedent exactly. Drift is report-only, not a non-zero
  exit, because that is what checkCodexModelPosture does — two sibling posture
  checks disagreeing about whether a violation is fatal would be its own defect.
  The choice is recorded in a comment rather than left implicit. A consumer-output
  test now drives the real CLI and asserts on the emitted JSON, and was shown
  failing before the wiring and passing after.

Also corrected a stale artifact: the design's Known limit L1 still claimed rung 3
was not in this deliverable, written while it was halted and false once the
maintainer unblocked it.

Verified after both fixes: the three bypass probes all return read-only, the
per-role table is 35/35 byte-identical, and both hold self-invalidation cases
still throw.

Refs #3897

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

* docs(#3897): the marker rung, the derived sandbox, and the bare plan-number depends_on

Reference: the runtime precedence ladder in docs/CLI-TOOLS.md gains the install
marker rung; docs/COMMANDS.md documents validate agents' new sandbox_posture
field; docs/reference/plan-md.md documents that depends_on accepts the bare plan
number.

Explanation: a docs/features fragment keyed id 3897, so it cannot collide with a
concurrent PR hand-allocating a section number, regenerated into FEATURES.md.

ADR-3473 §8.3 gains an ANSWER blockquote in the document's own correction style,
recording what was measured and built against the section's 2026-08-26 correction
- including the qualification that checkAgentsInstalled itself still checks
presence only, and the semantic assertion lives in a sibling wired into validate
agents rather than folded into it.

No how-to. Both user-visible changes are zero-step: a non-Claude install resolving
its own runtime, and plans executing in their declared waves, both happen without
the user doing anything. docs/how-to/control-the-reported-host-runtime.md covers a
DIFFERENT ladder (resolveReportedRuntime / agent_runtime) that this change does
not touch, and was deliberately left alone rather than edited by association.

No tutorial - nothing multi-step to walk through. docs/AGENTS.md unchanged: it
documents Claude-side tools frontmatter, never Codex sandbox_mode, and the
emitted tools contract did not change.

The prompt layer documents depends_on only by example, not by schema, so nothing
there needed editing - and few-shot-examples/plan-checker.md already showed
depends_on: ['01'], which now actually resolves.

Translated copies of plan-md.md are untouched; the project treats translations as
community-maintained.

Refs #3897

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

* fix(#3897): move the sandbox derivation out of the installer, off the install path, and off a third parser

The full suite came back with 26 failures across four files. Three distinct
causes, mapped individually rather than assuming the first explained the rest.

A. Requiring bin/install.js printed the GSD banner to stdout and corrupted
   `validate agents` JSON.

     Unexpected token '', "[36m   ██"... is not valid JSON

   checkCodexSandboxPosture reached deriveCodexSandboxMode by lazily requiring
   bin/install.js, whose module load prints the ASCII banner. So the command
   emitted banner bytes before its JSON and every JSON consumer broke, including
   ten tests that predate this branch. src/ reaching into bin/ was backwards
   layering that happened to also be loud.

   The derivation now lives in src/codex-agent-toml.cts - the existing Codex TOML
   domain module, no new module and no six-gate ripple - and both bin/install.js
   and src/agent-install-check.cts import it. One owner, which is §8.3's rule
   applied to the fix for §8.3.

B. The stale-hold throw fired on a legitimate partial source dir, and masked a
   security assertion.

   validateCodexSandboxHolds treated "this hold's .md is absent from the install
   SOURCE dir" as a stale hold and threw. A test fixture, or any partial install
   source, legitimately contains a couple of agents. Worse, it threw BEFORE the
   path-escape check, so a test asserting that a `../../evil` frontmatter name is
   rejected got my unrelated error instead of the traversal rejection it was
   written for. A fail-closed check of mine was hiding a real security check.

   The "no stale holds, shrink-only" invariant is a property of the repo's
   canonical agents/ roster, not of whatever directory an install happens to read.
   It is off the runtime path and enforced where it belongs, in the tests that
   already existed for it. A partial source dir now installs cleanly, and the
   evil-name case throws with its own escapes-configHome message again.

C. T8 depended on ambient process.env state.

   The marker/env parity assertion round-tripped through live process.env. It now
   compares against resolveExplicitRuntime's already-exported dependency-injection
   parameter - deterministic and hermetic, same claim. Proven still falsifiable
   rather than assumed: with the marker rung's normalization temporarily bypassed
   the two rungs diverge ("codex\n../../etc/passwd" vs "codex-../../etc/passwd")
   and the assertion fails, then passes again once reverted.

One correction folded in along the way. The first version of the move added
private _extractFrontmatterAndBody/_extractFrontmatterField helpers to
codex-agent-toml.cts - a THIRD copy of frontmatter extraction, where the graph
already shows two (bin/install.js:2348, runtime-artifact-conversion.cts:893).
Adding a third inside the epic whose thesis is one implementation per rule is not
defensible. deriveCodexSandboxMode no longer parses anything: it takes
(identity, toolsValue) and each caller supplies the tools value using the
extractor it already has. Both helpers are deleted. The identity argument is
still the filename stem, so the fail-open fix is untouched.

Verified after all three: `validate agents --raw` emits parseable JSON with no
banner and both posture fields; the four hold-bypass probes still return
read-only; the per-role table is 35/35 byte-identical at 26 read-only / 9
workspace-write; the hold list is still 16.

Refs #3897

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

* fix(#3897): drop a dev-only transitive dep, make the derivation total, retire a stale fallback test

Suite down to 7 failures from 26. Three more causes, mapped individually.

A. My extractor import dragged in a script that does not exist in an installed
   tree.

     Cannot find module '../../../scripts/fix-slash-commands.cjs'

   Chain: src/agent-install-check.cts imported runtime-artifact-conversion.cjs,
   which requires command-roster.cjs, whose line 36 requires
   ../../../scripts/fix-slash-commands.cjs. That path exists in the repo and not
   in an install, so every test exercising a synthetic install dir died at module
   load. I picked that extractor for convenience without checking what it pulls
   in - the same mistake that produced the banner bug, one layer further out.

   agent-install-check now uses a single-purpose extractToolsLine on
   codex-agent-toml.cts. That is deliberately NOT a general frontmatter parser:
   we deleted those helpers a commit ago for good reason, and this reads one
   line. Verified from outside the repo root that requiring either module prints
   nothing and does not throw.

B. A test pinned the deleted name-based fallback.

   'defaults unknown agents to read-only' called generateCodexAgentToml with a
   fixture declaring tools: Read, Write, Edit. Under derivation an unknown agent
   with a writing contract correctly derives workspace-write - design row S6, a
   new writing role gets the contract, not the pin. The behavior it asserted was
   the silent fallback this rung deleted; identity no longer decides the sandbox.

   Replaced with two rows rather than a flipped string: no tools declared ->
   read-only (absence is not a grant), and Write/Edit declared -> workspace-write.
   Strictly more coverage than the row it replaces.

C. The stale-hold check still threw per derivation call.

   Last commit took the roster-existence check off the install path, but
   deriveCodexSandboxMode itself still threw when a hold's role did not derive
   broader FOR THE CONTENT IT WAS HANDED - so it fired on any synthetic fixture
   for a held role.

   The throw is gone, and it cost nothing: if a held role's content does not
   derive broader, the hold pins read-only and derivation returns read-only
   anyway, so the hold is a no-op and there is nothing to fail about. The
   staleness invariant is a property of the real agents/ roster, and
   validateCodexSandboxHolds still enforces it there - confirmed against the real
   roster after the change, not assumed.

   deriveCodexSandboxMode is now total: every (identity, toolsValue) including
   undefined and null returns read-only or workspace-write, never throws.

Verified: validate agents emits parseable JSON; the four hold-bypass probes
return read-only; the per-role table is 35/35 at 26 read-only / 9
workspace-write.

Refs #3897

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

* docs(#3897): put the rung-3 decision in the shipped docs instead of pointing at an ignored path

The ADR entry and the feature fragment both ended their rung-3 explanation with
"see .gsd/phase/feat-3897-adr3473-83-rungs/45-decision-rung3-sandbox.md". That
directory is gitignored (.gitignore:55), so the rationale for holding 16 roles at
read-only was reachable only from the machine that produced it. A reader of the
ADR got a pointer to nothing.

Both now carry the reasoning inline: the criterion asks both that the sandbox
derive from the declared tool contract and that no role gain a broader sandbox,
and those cannot both hold, because a faithful derivation widens 16 roles the
deleted map never listed and that fell through its silent read-only default. The
resolution is derive-and-hold - the derivation owns the rule now, each hold is
released as its enforcement question is answered, and a hold is reversible where
a widened sandbox that turns out to be enforced is not.

Checked before assuming this was a defect class: CONTEXT.md cites
.gsd/phase/<slug>/40-design.md as its standard Design: provenance line in eight
module entries, and four other shipped docs do the same. Citing a phase artifact
is an established convention here, so those are left alone. What was wrong was
specific to these two: they put load-bearing rationale behind the pointer instead
of provenance.

docs/FEATURES.md regenerated from the fragment via scripts/gen-features.cjs
rather than hand-edited.

Refs #3897

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

* fix(#3897): close a fail-open, stop a silent mis-resolution, and read a declaration as a declaration

Two orthogonal reviews on the shipped sha. Three of the findings are the same
failure class this epic exists to close, committed inside it.

1. BLOCKER - the sandbox was decided for one identity and applied to another.

   bin/install.js derived sandbox_mode for the filename stem and then wrote the
   result to `${name}.toml`, where name comes from the file's own frontmatter.
   Make the two disagree and a HELD role's artifact goes wide:

     rename gsd-doc-writer.md -> gsd-doc-writer-v2.md, keep name: gsd-doc-writer
       -> stem is unheld, derives workspace-write, lands on gsd-doc-writer.toml
     add any gsd-*.md whose frontmatter name: is a held role
       -> clobbers that role's toml with workspace-write

   Both emit read-only on origin/next, because the deleted map was an allowlist
   and a miss fell back safe. This is a regression my change introduced. The
   previous review round moved the HOLD KEY off frontmatter to the filename stem
   and left the OUTPUT PATH on frontmatter; my own comment at install.js:6985
   calls that value attacker-editable, four lines above the line that uses it as
   the filename.

   The decision is now made over BOTH candidate identities, most-restrictive
   wins: if either the stem or the emitted name is held, the mode is read-only.

2. MAJOR - hold matching was toLowerCase() only, so confusables escaped.

   Turkish dotted/dotless i, fullwidth, NFD, trailing space/NBSP/dot/newline,
   ./ and ../agents/ all slipped the hold and emitted workspace-write.
   Identities are now basenamed, trimmed of NBSP/zero-width/control characters,
   NFKC-normalized and lowercased - and anything still carrying a character
   outside [a-z0-9._-] is treated as suspicious and derives read-only. We do not
   enumerate confusables; every shipped roster file is ASCII, so refusing to
   widen on an identity we cannot recognize is fail-closed with no false
   positives on real content.

3. MAJOR - the short-form depends_on tier mis-resolved SILENTLY.

   shortFormToId keyed on the last dash-segment of any canonical id with no
   constraint that it is a plan number, so a phase holding 09-FIX-auth-PLAN.md
   made depends_on: ["auth"] bind at wave 2 with zero warnings. This is the
   worst shape in the epic: the unresolvable-token warning fires on a DROPPED
   token, so a MIS-RESOLVED one is invisible and the tool reports a confident
   wave assignment built from a wrong edge. A wrong edge is worse than a missing
   one.

   The segment must now match /^\d+$/, which is exactly the contract
   docs/reference/plan-md.md already documents. This tier was recovered verbatim
   from the retired SDK lineage, which carried the same defect; we are
   deliberately NOT preserving it bug-for-bug, and the comment says so, so the
   next reader does not "restore" it.

4. MAJOR - the derivation was reading a declaration as an absence.

   extractToolsLine read one line, so a YAML list-form tools: block returned only
   its first item. Two roster files use list form, and gsd-nyquist-auditor
   declares Write and Edit there - parsed as "- Read", found no write tool, and
   emitted read-only. Rung 3's headline claim is that sandbox_mode derives from
   the declared tool contract; that claim was false for 2 of 35 roles and
   materially wrong for 1. Reading a declaration as an absence is the silent-drop
   class this epic exists to close.

   Renamed extractToolsValue and taught it both shapes. gsd-nyquist-auditor now
   derives workspace-write and joins CODEX_SANDBOX_HOLDS as its 17th entry, per
   the standing derive-and-hold decision - so emitted TOML stays byte-identical
   at 26 read-only / 9 workspace-write while the hold list finally records every
   role that would widen. A previous pass declined this fix because it moved the
   count; that inverts the priority. Byte-identity is preserved THROUGH the hold,
   not by leaving a parser broken.

   Divergence check, because this is where that bug hides: both paths feeding
   sandbox derivation - install.js's emitter and checkCodexSandboxPosture - now
   route through the one extractor. The tools readers in
   runtime-artifact-conversion and install.js's other frontmatter call sites
   serve Claude-side emission and do not feed sandbox derivation.

Also fixed, each real: the posture check's `found` used a naive whole-file regex
where its own sibling uses the block-aware scanner, so prose inside
developer_instructions produced a false violation; `found` skipped
truncatePostureValue and leaked a 300-char value into validate agents output;
deriveCodexSandboxMode's absolute never-throws claim was false for an object with
a throwing toString; T49 could not falsify cross-phase leakage (its target phase
had its own 01, so a globally-scoped map passed too); T20/N6 iterated a hardcoded
table and pinned the FIXTURE size, so a 36th agent would be silently unchecked;
three tests reimplemented the code they were testing instead of importing it; and
T2-T4 deleted GSD_RUNTIME without restoring it.

Verified: hold list 17, gsd-nyquist-auditor derives workspace-write unheld and
emits read-only held, roster 35/35 at 26/9, depends_on ["auth"] no longer
resolves while ["01"] still does, both identity-bypass cases and every confusable
vector emit read-only.

Refs #3897

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

* docs(#3897): the hold list is 17, and the reason the 17th was missing

The count read 16 because the derivation could not read the declaration it
claimed to derive from: the tools reader was single-line, so a YAML list-form
tools: block returned only its first item and gsd-nyquist-auditor's declared
Write and Edit were read as an absence.

Both the ADR entry and the feature fragment now carry the corrected count and the
reason for it, rather than a silently updated number. Deriving from a declaration
you cannot parse is not deriving, and a flattering count is worse than a wrong
one because it looks settled.

docs/FEATURES.md regenerated from the fragment.

Refs #3897

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

* chore(#3897): backfill changeset pr number

Refs #3897

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

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-08-27 15:19:01 -04:00
Tom Boucher
7f3119a29f fix(#3729): hoist the .planning and CI gates above the graphify hook's node parse (#3935)
* test(#3729): non-GSD repo and CI must bail before the graphify hook node parse

* fix(#3729): hoist the .planning and CI gates above the graphify hook's node parse

* chore(#3729): changeset fragment (pr number backfilled after PR creation)

* chore(#3729): backfill changeset PR number (3935)

---------

Co-authored-by: sim <sim@local>
2026-08-27 12:15:21 -04:00
Tom Boucher
4af59f8dd3 fix(#3662): resolve managed hook node runners at hook-fire time (#3790)
* test(#3662): failing-first suite for runtime-resolving hook runners

* fix(#3662): resolve managed hook node runners at hook-fire time

* fix(#3662): close review findings and document the resolver

* fix(#3662): close adversarial and security review findings

* chore(#3662): backfill changeset pr number

* test(#3662): honor win32 skip return and platform-aware sh runner pin

* test(#3662): pin the bare win32-claude sh-hook shape omitting the bash runner

---------

Co-authored-by: sim <sim@local>
2026-08-24 00:07:06 -04:00
Tom Boucher
adb46cdd85 feat(#2734): surface STATE.md commit-age on the statusline (#3700)
* test(#2734): failing-first suite for the statusline STATE.md freshness marker

Binds the contract before any hook change exists: a `state ~N commits back`
segment gated on the state_head stamp landed by #2622, firing at the same
advisory threshold /gsd-health's W024 uses rather than at > 0.

Covers all five acceptance criteria — threshold parity (19/20/21 boundaries),
both renderers including formatGsdStateCompact, an exact spawn-count assertion,
repo-pinning and sub_repos degradation, and behavioral parity against
readStateHeadFreshness rather than a source-grep of the two fence copies.

52 example-based tests plus 5 seeded fast-check properties. Red now by design.

* feat(#2734): surface STATE.md commit-age on the statusline

Adds an opt-in `state ~N commits back` marker to the GSD-state segment,
consuming the `state_head` stamp and freshness contract landed by #2622.
A solo developer returning to a project reads "Phase 4, executing" in
STATE.md and acts on it, without noticing the codebase moved 40 commits
since that line was written. /gsd-health reports it as W024, but only if
you think to run it; the statusline is the surface you see without asking.

Fires at STATE_HEAD_ADVISORY_COMMITS (20), the same threshold W024 uses,
not at > 0: with commit_docs:true the commit carrying a STATE.md sync
advances HEAD by one, so > 0 would alarm permanently on a fresh project.

Costs exactly one bounded git subprocess per render and none when
disabled. `rev-list --left-right --count` answers ancestry and distance
together, and repo pinning is a filesystem check mirroring
projectOwnsItsRepo rather than a --show-toplevel compare, which is
unreliable on macOS /private/var and Windows 8.3 paths.

Every unresolvable input degrades to the tri-state unknown -- the marker
is absent, never a "fresh" claim the project cannot substantiate: a
malformed stamp, a root that does not own its .git, a sub_repos
workspace, history rewound past the stamp, or git being unavailable.

Also collapses statusline config resolution onto one resolveStatuslineOptions()
seam. runStatusline() and renderStatusline() duplicated it byte-for-byte;
one copy is what keeps a newly-added key from reaching only one of them.

* test(#2734): route the e2e spawn through the process seam and fix fixture leaks

Review findings from the two orthogonal passes:

- `bothEntryPointsResolveOptionsIdentically` spawned a child and substring-matched
  its stdout to test a pure function. It now calls resolveStatuslineOptions()
  directly — no subprocess, no text matching.
- `skipsFreshnessWorkWhenTodoTaskActive` genuinely needs a child (the !task gate
  lives in runStatusline, which reads stdin), so it now spawns through
  tests/helpers/process-seam.cjs and proves the negative with a filesystem fact:
  the git shim appends to a marker file on every invocation, and the assertion is
  that the marker never appears. Stronger than asserting text is missing, and it
  drops the last stdout substring match in the block.
- Every fixture-creating test now registers `t.after(() => cleanup(dir))` instead
  of a trailing cleanup(dir), which leaked the temp repo on assertion failure.
  derivationAgreesWithStateModule reassigns `dir` across five fixtures, so it
  binds each directory at scheduling time rather than cleaning only the last.

Also corrects markerCoexistsWithMilestoneComplete, which asserted the wrong
expectation rather than finding a code defect: `percent` drives the progress bar
too, so the milestone segment reads "v1.9 [##########] 100%". The marker appends
after it, which is what the test exists to prove.

CONTEXT.md's opt-in statusline key list was missing statusline.show_git as well
as the new key; both are now enumerated.

* docs(#2734): backfill changeset PR number (#3700)

---------

Co-authored-by: sim <sim@local>
2026-08-20 00:35:01 -04:00
Tom Boucher
bf2332e67c fix(#3582): route every hook's compiled-module require through the self-heal build seam (#3629)
* test(3582): failing-first cold-tree coverage and the seam drift lint

On a plugin-channel install the compiled gsd-core/bin/lib/*.cjs are legitimately
absent (ADR-457 build-at-publish; the npm package builds before publishing, a raw
tree materialization never does). gsd-tools.cjs calls ensureRuntimeBuild() before
requiring ./lib; no hook does, so the isolation guard's Cannot-find-module lands in
its fail-closed catch and is misreported as an unreadable dispatch-isolation
configuration, blocking every executor dispatch.

These tests fail on that: cold-tree runs of the isolation guard, statusline, cursor
guard and update worker, plus the seam's actionable build error surfacing instead of
the generic misreport.

Also adds the drift lint the acceptance criteria require, with a fixture proving it
CAN fail — a guard never shown to fail is worthless. It is red here by design: it
flags today's unfixed hooks, which is exactly the defect.

* fix(3582): route every hook's compiled-module require through the self-heal seam

RED proven at 5b174b0d: 11 failures — the cold-tree runs for the isolation guard,
cursor guard and update worker, the fail-closed-with-actionable-message assertion, and
the lint's own real-tree check.

The compiled runtime library is produced by build:lib and gitignored (ADR-457,
build-at-publish). The npm package builds before publishing; a plugin-marketplace or
git-clone install materializes the raw tree and never does, so on that channel those
modules are legitimately absent. The self-heal seam added by #2002 exists to heal exactly
this, and the CLI entrypoint already calls it — no hook did. The isolation guard's
Cannot-find-module therefore landed in its fail-closed catch and was reported as
'could not read or resolve dispatch-isolation configuration', so an ARTIFACT ABSENCE was
misdiagnosed as an unreadable project config and every executor dispatch was blocked.

All SEVEN affected files now call the seam before their first compiled require. The issue
named four; a scan found six; implementing it surfaced a seventh — the shared isolation
sentinel helper, used by BOTH guards, which requires two compiled modules itself and
would have defeated the guards' own fix on a genuinely cold tree. Same defect class, so
fixed here rather than left as a known-broken remainder.

Failure posture is deliberately split by hook kind:
- Gates (agent isolation guard, cursor subagent start) surface the seam's actionable
  build error distinctly instead of swallowing it into the generic text, and stay
  fail-closed — a genuinely unreadable project config still DENIES exactly as before.
- Cosmetic and detached hooks (statusline, update worker, update check, update banner)
  DEGRADE rather than crash: the statusline draws on every render and the worker is a
  detached process, so a build failure there must not take down the prompt.

The npm path is untouched: the seam's already-built fast path returns immediately, so
prebuilt installs pay nothing and behave bit-for-bit as before.

Adds a drift lint, wired into the CI lint chain, so the invariant is enforced rather than
remembered — without it the next hook to add a compiled require reintroduces the class
silently. It is proven able to fail: a fixture hook requiring a compiled module without
the seam is flagged, and one that uses the seam is not. Verified directly — on the
unfixed tree it named all seven offenders; with the fix it passes.

While writing the lint's comment stripper, a naive whole-text block-comment regex ate its
own fixture, because this repo's comments legitimately spell the compiled-lib glob whose
star-slash reads as a comment opener. Rewritten as a line-based scanner with a regression
test pinning that case.

* fix(3582): test the three untested seam call sites and assert typed reason codes

Two independent reviews converged on the same major gap: the fix wired the seam into
seven files but only four had cold-tree tests. The adversarial pass put it plainly —
deleting the shared isolation-sentinel helper's seam call would not have failed any test
in the diff. That file was my own addition beyond the issue's four, so it shipped
untested; that is now closed.

- Shared isolation-sentinel helper: its seam call is only reached when .planning is NOT
  directly under cwd, and every existing cold-tree fixture puts it there, so the early
  return always fired first. Now covered, and proven load-bearing by mutation: with the
  call removed the spy records zero seam invocations and the test fails.
- update-check hook and update-banner hook: cold-tree tests added asserting the DEGRADED
  VERDICT — the fallback cache filename, and silent suppression when the package name
  degrades to null — rather than merely 'did not throw'. The banner hook previously had
  no test file at all.

Standards violation fixed: two tests asserted on free-form prose via assert.match against
a JSON reason string, which CONTRIBUTING bans by name — its own BAD example is exactly
that. The ESLint rule only covers readFileSync/spawnSync text, so tooling did not catch
it. Both isolation guards now emit a machine-readable reason_code from a frozen enum,
following the repo's existing REASON convention, and the tests assert that instead. The
human-readable message is unchanged for operators; only the assertion target moved.

The duplicated degrade boilerplate across the three cosmetic hooks was deliberately NOT
extracted, and the reason is recorded at each site: both viable shapes — a
path-parameterized helper, or a ceremony-only wrapper — defeat the drift lint's per-file
literal co-occurrence check, so extracting would require the lint to special-case its own
helper. Triplication is the lesser evil while the lint stays a co-occurrence scan.

The lint's header now states what it does and does not catch (literal quoted requires
only; hooks/ scan root), so a future reader does not over-trust a guard that a
concatenated path or a require inside a non-hooks helper would evade.

* chore(3582): regenerate the committed install-tree fixtures

Adding a new shipped hook helper changed the install tree, and those fixtures are
committed-and-derived (regen:derived / gen:install-tree), so 12 'install tree — <runtime>'
tests failed on 541a1913. Regenerated rather than hand-edited.

The delta across all 15 runtime fixtures is exactly two lines — the new helper under both
its hooks/ and gsd-hooks/ install paths — and nothing else, so the regeneration pulled in
no unrelated drift.

This is the bookkeeping ripple a new file under hooks/ carries; it was not visible from
lint:ci, which passed both before and after.

* chore(3582): backfill changeset PR number (#3629)

---------

Co-authored-by: sim <sim@local>
2026-08-18 14:11:23 -04:00
Tom Boucher
58e5a5b581 fix(#3566): read the per-install .gsd-runtime marker above host-wide defaults in the isolation guards (#3589)
* test(#3566): pin per-install .gsd-runtime marker precedence in the isolation guard

Failing-first regression for #3566: resolveRuntimeIdentity must consult the
per-install marker (<install>/gsd-core/.gsd-runtime, written by every install
since #2297) above the host-wide ~/.gsd/defaults.json whose leakage #2840
exists to prevent. In-process block drives the marker through the same
_setInstallRuntimeMarkerForTests seam model-resolver.cts established.

* fix(#3566): read the per-install .gsd-runtime marker above host-wide defaults in the isolation guard

resolveRuntimeIdentity consulted ~/.gsd/defaults.json — the exact host-wide
file whose runtime leakage #2840 exists to prevent — and never the
per-install marker the installer has written for every runtime since #2297.
On a 2-runtime machine the guard confidently resolved the WRONG runtime and
silently went inert when that runtime declares no harnessIsolationFlag.
Precedence is now GSD_RUNTIME > config.json runtime > .gsd-runtime marker >
defaults.json, restoring #2840's design; the defaults rung stays last so
single-runtime and pre-#2297 installs keep #3045 BLOCKER 2 behavior.

* fix(#3566): apply the marker rung to the cursor subagent-start fallback; review fixes

Review finding (spec pass): hooks/gsd-cursor-subagent-start.js's
resolveFallbackIsolation mirrored the Claude hook's exact three-rung chain
and shared the bug — same rung inserted between config.json and the
host-wide defaults, same #2297-pattern seam, in-process regression +
negative controls.

Review finding (standards): dropped the one new raw-text assert.match on
the block reason (CONTRIBUTING test-output rule); the reason-naming
property stays pinned by the pre-existing #3045 row.

* chore(#3566): add changeset fragment

* chore(#3566): backfill changeset pr number

---------

Co-authored-by: sim <sim@local>
2026-08-17 10:48:32 -04:00
Tom Boucher
66ad3d6250 test(#3523): rewrite two undetected source-greps as behavioral tests (#3548)
* test(#3523): rewrite two undetected source-greps as behavioral tests

Both sites read a real shipped hook and text-searched it, and both were
invisible to local/no-source-grep because the path was bound to a separate
const the rule never resolves back to its literal.

tests/check-update-config-dir.test.cjs carried three such reads, not the
one the issue cites. All three are replaced by a harness that runs the
real hooks/gsd-check-update.js under a fake HOME and observes the config
dirs detectConfigDir resolved, via the env the hook hands its worker.
Coverage now includes the CLAUDE_CONFIG_DIR precedence cases and the
full adjacent-pair search order the deleted static grep only asserted
for one pair.

tests/security-prompt-injection.security.test.cjs asserted the scanner
hook's SOURCE TEXT contained each canonical MARKDOWN_LINK_PATTERNS regex
source. It now drives probes through the real hook and asserts the
emitted ruleId, with a completeness gate so a new canonical pattern
without a probe fails loudly, plus safePredicate parity the text grep
never checked.

No allow-test-rule marker is added. The now-false marker on
check-update-config-dir.test.cjs is removed and its identity-allowlist
entry pruned, which the ratchet requires.

Refs #3464

* feat(#3523): emit typed findings IR from the read-injection scanner

The scanner built a structured findings array internally and discarded the
structure when rendering its advisory sentence, so the only thing a test
could assert on was that prose. CONTRIBUTING's 'Prohibited: Raw Text
Matching on Test Outputs' names that exact situation and prescribes adding
the typed surface rather than matching the text.

findings is now an array of {ruleId, match} records and the advisory is
derived from it through a single renderFinding mapper, so the rendered
text and the IR cannot drift. The array is emitted additively on
hookSpecificOutput for both the advisory and blocking output shapes.

The advisory string itself is unchanged, byte for byte: verified across
six payload shapes (single markdown-link hit, 3+ finding HIGH, invisible
unicode, unicode tag block, injection-pattern-only, mixed) by running the
pristine and modified hooks against identical stdin and comparing. 28
existing assertions across four suites substring-match that string.

The #3523 parity assertions now read the IR, and a new test binds the two
surfaces together by asserting every MD-LINK ruleId in findings appears in
the advisory and that the reported pattern count matches findings.length.

Refs #3464

* docs(#3523): document the read-injection scanner output contract

The scanner had no subsection under Security Hooks, only a one-line table
row. Documents its trigger events, severity thresholds, skip conditions,
rule ids, and the findings IR added alongside the advisory.

Refs #3464

* fix(#3523): bind every finding family to the advisory, freeze rule ids

Two review findings on the typed-IR commit.

The parity test filtered on MD-LINK- and so bound only one of the four
finding families to the rendered advisory; the other three were covered
only by the pattern count, which catches a length mismatch but not wrong
text. It now drives a payload producing all four families at once,
asserts all four are present so it cannot silently degrade, and checks
each one's expected rendering against an expectation table coded
independently of the hook's own mapper.

The three synthetic rule ids were written twice each — once at the push
site, once in renderFinding — so a rename at one site would fall through
the generic render branch with no signal. They are now a frozen RULE_IDS
constant referenced from both. No string value changed; the advisory
remains byte-identical across all six proof payloads.

Refs #3464

* chore: pin changeset pr field to #3548

---------

Co-authored-by: sim <sim@local>
2026-08-15 13:53:18 -04:00
Tom Boucher
268ca7e32d fix(#3504): harden hook injection patterns and force-add guard (#3510)
* test(#3504): add failing-first parity, fail-closed, and bypass suites

* fix(#3504): harden hook injection patterns and force-add guard

* test(#3504): stage the scanner lib dependency in shared-hooks fixture

* chore(#3504): backfill changeset pr number

* test(#3504): build parity samples from fragments for the ci scan

---------

Co-authored-by: sim <sim@local>
2026-08-14 21:19:35 -04:00
Tom Boucher
470389f3a2 chore(#3212): tokenizer-first for stateful grammars — a shared scanner — Phase 3 (#3424)
* feat(#3414): promote git-cmd.js token-walk into a shared scanner, fix #3169

Phase 3 of epic #3212 (ADR-3212 §4). New src/token-scanner.cts generalizes
hooks/lib/git-cmd.js's proven token-walk (#3129 — "has not re-opened"):
tokenizeShellLike (quote-aware shell tokenizer, byte-identical port) and
indentWidth (bullet-nesting depth).

git-cmd.js migrates onto tokenizeShellLike with zero behavior change
(parity-asserted against every existing #3129 fixture in
tests/worktree-safety.test.cjs's folded block); isGitSubcommand's phases
1-3 (env-prefix skip, executable check, global-option consume) extracted
into skipToSubcommand, shared with the new extractBranchArgument (git
checkout -b / git branch <name>) — a new capability exercising the seam
on the domain the ADR names, not a migration of existing duplicated logic
(none existed).

Fixes #3169: src/decisions.cts's parseDecisionLines couldn't distinguish
a cross-reference bullet nested under an open decision from a fresh
malformed declaration attempt. An earlier bold-run-content-classification
design was tried and disproven against the repo's own existing FIX-B
fixtures (D-02, "no colon no dash") before being adopted — both have
identical shape under any content-only rule. Nesting depth (via
indentWidth) is the actual distinguishing signal: a bullet indented
deeper than the currently-open decision's own bullet is elaboration,
folded into its text like a continuation line, never tested against the
parse-miss guard. A bullet at the same-or-shallower indent is unchanged.

Scope-narrowing disclosed, not silent: of the ADR's four named bugs
(#3197, #3169, #2570, #2528), three no longer need this phase's work.
were independently fixed and closed since the ADR was authored — #2570's
fix is already a correctly-bounded regex per the ADR's own decidability
test (no scanner needed); #2528's fix is a deliberate, twice-reviewed
non-scanner design (its own code comment records a scanner-based attempt
that regressed a symmetric case and was reverted) that this phase does
not disturb. Only #3169 required new work.

get_impact: isGitSubcommand CRITICAL/196 affected symbols,
parseDecisionLines CRITICAL/164 affected symbols (ADR §6 due diligence).

Six-gate ripple: .gitignore, eslint.config.mjs, docs/INVENTORY.md,
docs/INVENTORY-MANIFEST.json (regenerated), CONTEXT.md glossary.

Design: .gsd/phase/chore-3414-tokenizer-first-seam/40-design.md
Test matrix: .gsd/phase/chore-3414-tokenizer-first-seam/50-test-matrix.md

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

* fix(#3414): add required fast-check property tests per code review

TESTING-STANDARDS.md:169 requires at least one fast-check property test
for any module that implements parsing — src/token-scanner.cts had none,
an orthogonal Standards-axis review finding. Adds two seeded property
tests (mirroring Phase 1/2's fast-check-setup.cjs convention):
indentWidth counts exactly a generated leading-space run; tokenizeShellLike
round-trips a generated array of whitespace/quote-free words joined with
single spaces.

The design doc's own "no property test needed" rationale was wrong — it
argued no algebraic law applied, but the standard is unconditional for
parsing modules regardless of whether one "feels" applicable. Corrected
in .gsd/phase/chore-3414-tokenizer-first-seam/50-test-matrix.md.

Also fixes two Spec-axis wording drifts the same review found between
the design doc and the shipped code (doc-only, no behavior change):
extractBranchArgument's documented signature dropped an unused
subVariants parameter that was never implemented, and the #3169
fail-first fixture description corrected from "15-decision plan via
cmdDecisionCoverageVerify" to the actual compact 3-decision analog via
the real blocking gate, check.decision-coverage-plan.

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

* docs(#3414): add changeset for #3169 fix

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

* docs(#3414): backfill changeset pr number to 3424

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

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
2026-08-13 23:08:34 -04:00
Tom Boucher
0c413bbc9c chore(#3059): close the ESLint glob-coverage escape and guard it (#3277)
* chore(#3059): close the ESLint glob-coverage escape and guard it

62 tracked source files matched no `files:` glob in eslint.config.mjs, so
ESLint skipped them entirely while `eslint .` still exited 0 — including all
26 files under hooks/, the enforcement machinery itself.

Covers 56 of them (eslint-rules/, hooks/, bin/lib/, pi/, examples/, vscode/,
the plugin shims, root *.mjs) and allowlists the 6 deliberate
must-not-compile brand-typing fixtures with a recorded reason each.

hooks/** is covered with n/no-process-exit deliberately off: a hook's whole
contract is its exit code, several exits are load-bearing stdin-timeout
guards where nothing else terminates the process, and ADR-0012/0174 scope the
no-process-exit convention to the Command Routing Hub. bin/lib/ui-safety-gate.cjs
is dual-mode, so it keeps the rule live and takes two targeted disables in its
require.main===module tail instead.

Adds scripts/lint-eslint-glob-coverage.cjs + a node:test drift guard so the
class cannot regrow: allowlist entries require a non-empty reason, the list
ratchets down only (a stale entry fails), and a tracked-count floor means a
broken `git ls-files` fails rather than reporting clean.

Closes #3059

* chore(#3059): apply review findings — correct the changeset count, add parser properties

Isolated adversarial review, confirmed by rebuilding a byte-for-byte replica
of the pre-change eslint.config.mjs: the changeset claimed 44 previously-
unlinted files. The real figure is 56 (56 covered + 6 allowlisted = 62).
That was user-facing CHANGELOG text and was wrong; corrected, along with three
consequential figures in the design record.

CLAUDE.md requires a fast-check property test for parsers and budget limits,
and listTrackedSourceFiles is a parser. The standards review called this
"satisfied in spirit"; it is not. Adds three properties driving the real
exported parser through an injected execFile: extension totality/soundness
including a trailing terminator, backslash-normalization totality, and
CRLF/LF equivalence — the invariant the repo's recurring CRLF defect class
breaks.

Also de-duplicates the anchor rows onto one shared resolver, kept deliberately
independent of the guard's own resolveFileCoverage so an anchor still fails if
that resolution regresses, and records in the guard's header why the
bin/install.js family is NOT allowlisted: it resolves to 2 rules under
ADR-1703, so an entry would trip the allowlist_stale ratchet.

* fix(#3059): make the coverage guard's git call container-safe

The remote runner reported the guard degrading to `git_failed` on both Node
lanes:

  fatal: detected dubious ownership in repository at '/work'

The runner executes in a container where the repo is owned by a different UID,
so git refuses to operate on it. The guard's degraded-verdict path worked
exactly as designed — it reported the failure instead of throwing or falsely
reporting clean — but a guard that cannot run in CI is not a gate.

`git ls-files` is now invoked as `git -c safe.directory=* ls-files`. `-c`
scopes the override to the single invocation and mutates no config file, and
the wildcard is appropriate because this command only enumerates tracked paths
in the repository it is already executing inside.

Adds a regression test that captures the argv through the injected execFile
seam and asserts `-c safe.directory=*` precedes `ls-files`, so the container
case is pinned behaviorally rather than by reading the script's source.

* chore(#3059): backfill changeset PR number

pr:0 placeholder replaced with the real number now that #3277 exists.

---------

Co-authored-by: sim <sim@local>
2026-08-09 19:35:34 -04:00
Tom Boucher
27aa40f65e fix(#3023): stage pi's shared hook bundle outside pi's reserved hooks/ directory (#3175)
* test(#3023): failing-first guard — pi must not stage hooks in its reserved dir

pi reserves <configDir>/hooks as its deprecated extension location and warns
on every startup when it exists. Assert a pi install stages the shared hook
bundle under gsd-hooks/ instead, manifests it there, and never creates hooks/.

Also adds pi to the local-scope dir table in install-shared.cjs: pi was in
RUNTIME_META but not LOCAL_DIR_NAME, so scope:'local' resolved
path.join(root, undefined) and no local pi install could be exercised.

Fails before the fix. Verified via the remote runner.

* fix(#3023): stage pi's shared hook bundle outside pi's reserved hooks/ dir

pi reserves <configDir>/hooks as its now-deprecated extension location and
warns on every startup when that directory merely exists — checkDeprecatedExtensionDirs()
guards the warning with a bare existsSync(), unlike its tools/ sibling. GSD staged
its shared hook bundle exactly there, and pi's advised remediation (move it to
extensions/) would break the adapter's paths and expose GSD's .js helpers to pi's
extension auto-discovery.

The bundle directory name is now runtime-descriptor-driven: hostBehaviors
.sharedHooksDirName, defaulting to 'hooks' so all 18 other runtimes are
byte-identical. pi sets 'gsd-hooks'. The name is validated as a single path
segment — separators, dot-only segments, trailing dots, absolute paths, NUL,
and Windows reserved device names all fall back to the default, because the
value is joined onto a user's config root and written to.

Renamed in place rather than relocated: hook scripts resolve siblings via
__dirname/.., so a depth change would silently break them.

- install / uninstall / manifest sites all read the resolved name
- pi/gsd.cjs probes gsd-hooks then hooks, so dev checkouts and half-upgraded
  trees still resolve; the never-throws contract is preserved
- new migration 009 retires the legacy pi hooks/ dir on upgrade, using a new
  non-recursive remove-empty-dir engine primitive (rmdirSync only,
  symlink-refusing, containment-guarded); ADR-0008 amended accordingly
- fixes two latent name-dependencies the rename exposed: the stale-hook scan
  and the injection scanner's self-exclusion both hardcoded 'hooks'

Verified on the remote runner.

Closes #3023

* fix(#3023): close review findings and align emitted provenance with the rename

Adversarial review found two defects, and the remote runner found four
failure clusters. All fixed here.

Review BLOCKER — detect-custom-files was blind to the renamed bundle.
GSD_PREFIX_MANAGED_DIRS in gsd-tools.cjs hardcoded 'hooks', so for pi the
whole gsd-hooks/ tree was invisible to the custom-file scan and user-added
files there were never backed up before the next update's clean-install wipe.
The dir set now resolves via the .gsd-runtime marker plus the shipped
capability registry (never bin/install.js, which is not shipped into installed
trees), and falls back to scanning every known candidate when the runtime
cannot be determined — over-scanning is safe, under-scanning is the data loss.

Review MAJOR — the pi adapter bound to an empty bundle. resolveSharedHooksDir
accepted any directory, so an interrupted install left gsd-hooks/ winning over
a fully-staged legacy hooks/ and every hook silently no-opped. A candidate now
qualifies only if it is non-empty.

Remote-runner clusters:
- emitted-provenance had no rule for the gsd-hooks/ family; added two pi-scoped
  rules pointing at the same sources the existing hooks/ rules use. The table is
  total, so an unattributed family is a hard failure by design.
- pi tests in install-minimal-hooks and the install integration suite asserted
  the old layout; updated to derive the dir name from the descriptor rather than
  hardcoding either name.
- 19 unrelated-looking failures on node22 only were a leaked fs mock: t.after()
  runs in registration order, cleanup was registered before mock.restoreAll(),
  and node22's JS rimraf calls the public fs.rmdirSync while node24's native
  path does not — so the EACCES stub leaked process-wide on one lane. Restore
  now runs first.

Verified on the remote runner.

* fix(#3023): honor PI_CODING_AGENT_DIR, ack the rename ripple, fix expandTilde

pi resolves its agent dir as PI_CODING_AGENT_DIR ?? ~/<CONFIG_DIR_NAME>/agent
(packages/coding-agent/src/config.ts). GSD's pi descriptor declared an empty
configHome.env, so a user with that variable set had GSD installed where pi
never looks. Added the env name; the dot-home-nested resolver already handled
the override, so no resolver logic changed.

Also fixes expandTilde in the shared runtime-homes resolver, found while adding
that: it hardcoded os.homedir() and ignored the opts.home every caller threads,
so EVERY runtime's tilde-valued env override (claude, antigravity, windsurf, pi)
silently resolved against the real home. That is a correctness bug and a
test-escape hazard — a sandboxed test asserting on a tilde override reached the
developer's actual home directory. Now threaded through every branch; behavior
with no injected home is unchanged.

Adds the emitted-drift ack fragment for the 58 pi paths whose emitted location
moved with the rename. The provenance rules satisfy the totality gate; the
differential gate needs the ack because the hook sources are byte-unchanged —
only the installer's target directory moved. The two hook files this branch
genuinely edits stay attributed and are not double-acked.

Note on piConfig.configDir: it is read from pi's OWN installed package.json
(getPackageDir walks up from pi's __dirname), alongside piConfig.name — a
white-label setting for a redistributed pi fork, not a per-project user setting.
Documented accordingly rather than treated as an unsupported override.

Verified on the remote runner.

* fix(#3023): reject blank env overrides, pin adapter/descriptor parity

Three review findings, all fixed.

A whitespace-only config-dir override was accepted verbatim: the guard was
`if (val)`, falsy only for the empty string, so PI_CODING_AGENT_DIR='   '
resolved to a literal three-space directory name instead of falling back to the
descriptor default. Fixed across every env-consuming branch — dot-home,
dot-home-nested, all three xdg steps, and generic-agents-root — not just pi's.
Non-blank values are still never trimmed, so '~/My Agent Dir' keeps working.

pi/gsd.cjs's probe list and the descriptor were two independent sources of truth
for the bundle directory name; a future rename would have desynced them silently
and left every pi hook quiet with no error. The probe list stays deliberate — it
must resolve in a dev checkout and a half-upgraded tree, where the registry's
answer would be wrong — so this adds the parity assertion the repo's
generative-fix-divergence rule calls for: the descriptor value must be the FIRST
candidate, and the default must remain present.

Changeset body rewritten to cover the two later user-facing fixes it had not
caught up with.

Verified on the remote runner.

* chore(#3023): backfill changeset PR number

* fix(#3023): anchor injection-scan patterns and fix a macOS detection hole

CI's security job flagged CONTEXT.md:124 — pre-existing prose reading 'not the
same fact as a genuinely empty or absent one'. The match was the 'act as a'
INSIDE 'f-act as a': the pattern had no left word boundary, so any word ending
in act tripped it (fact, impact, contract, artifact, interact, redact,
abstract). My four-line CONTEXT.md edit dragged the latent false positive into
this PR because the scan is diff-scoped by file but reads whole files. Anchored
with (^|[^[:alnum:]]) rather than rewording maintainer-owned prose, which would
have left the class alive for the next PR touching any file saying 'fact as a'.

Auditing the rest of the list for the same class surfaced a real detection hole:
the eval/exec/Function patterns matched a quote via \x27, a GNU-grep-only hex
escape. BSD/macOS grep reads it as four literal characters, so single-quoted
eval('...')/exec('...') payloads were NEVER detected there while passing on
GNU-grep CI. Replaced with a literal apostrophe class.

Boundaries were added only where a real word-suffix collision exists; exec,
jailbreak, developer mode and the role-manipulation family were audited and
deliberately left unanchored. 22 new cases cover both directions — the false
positives now scan clean, and every real payload still fires, including the
quote/punctuation/start-of-line boundary forms.

Also builds this branch's injection test fixture at runtime instead of carrying
the literal phrase, so the payload keeps its teeth without tripping the scan.

Verified on the remote runner.

---------

Co-authored-by: sim <sim@local>
2026-08-07 13:41:21 -04:00
Tom Boucher
10da377794 fix(#3021): recognize worktree-wf_* branch namespace in all guards (#3109)
* fix(#3021): recognize worktree-wf_* branch namespace in all guards

The Claude-orchestration Workflow backend (#1143) creates per-plan
worktrees on branches named worktree-wf_<runid>-<n>. Four independent
copies of the agent branch allow-list regex (^(worktree-)?agent-...) never
learned this namespace:
- hooks/gsd-worktree-path-guard.js:176 — FAILED OPEN (process.exit(0)),
  silently disabling path containment for exactly the concurrent dispatch
  mode where cross-worktree writes are most likely
- src/worktree-safety.cts:21 — silently dropped cleanup-wave manifest
  entries
- agents/gsd-executor.md:503 — FATAL halt on branch check
- gsd-core/references/worktree-branch-check.md:33 — same FATAL halt

Extended all four to ^((worktree-)?agent-|worktree-wf_)[A-Za-z0-9._/-]+$.
The path guard now correctly blocks cross-worktree writes for Workflow-
backend branches instead of no-op'ing.

* chore(#3021): backfill changeset PR number 3109

---------

Co-authored-by: sim <sim@local>
2026-08-06 04:26:59 -04:00
Tom Boucher
8f75e27554 fix(#3045): fail closed when an executor dispatch drops its resolved isolation (#3069)
* feat(#3045): deny an executor dispatch that drops its isolation flag

Every isolation gate already resolved correctly. The resolved value then reached
the executor through a prose instruction telling the model to substitute it into
a call the model composes itself, and nothing verified the substitution. When it
was dropped, the executor edited and committed in the user's primary checkout
with no consent and no warning.

A prose backstop would be the same class of artifact as the defect, so this is a
shipped PreToolUse hook on the Agent tool. It fires at the instant of the call
rather than being read once at the top of a workflow, which is the only placement
the model cannot skip.

The guard is inert unless it can positively establish that this is a GSD project,
that the project resolves to harness isolation, and that the dispatch targets an
executor. A non-GSD repo has no invariant to enforce. Where it cannot read the
configuration at all, it denies rather than assuming, with its own reason -- a
guard that cannot verify must not answer safe. A malformed payload allows rather
than throwing.

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

* feat(#3045): extend the isolation guard to Cursor

Cursor is the second of only two runtimes that resolve harness isolation, so
shipping the guard for Claude alone left half the exposed surface unguarded while
the changeset implied it was covered.

The two runtimes fail differently. On Claude the harness flag is a per-dispatch
kwarg the model must copy into a call it composes, and the defect is that it can
be dropped. On Cursor the flag is --worktree, which applies to the whole session,
and the subagent-start payload carries no isolation field at all. There is no
flag to check, so the guard verifies the effective state instead: whether the
workspace is genuinely running outside the user's primary checkout. That is a
stronger check than the Claude one because it tests reality rather than intent,
and it is commented so nobody later rewrites it into a flag check.

Isolation is established two ways, either sufficient: the workspace resolves to a
linked git worktree, or it sits under the worktree root Cursor manages. The
second matters because a directory Cursor placed there is a legitimate isolated
session even before it becomes a distinct git worktree, where linkage alone would
report no repository.

Detecting linkage required a new primitive rather than the existing context
resolver. That resolver short-circuits on finding a local .planning directory
before it ever compares the git directory to the common one -- and an isolation
worktree normally has its own checked-out .planning. Reusing it would have read a
correctly isolated session as unisolated and denied it, which is the failure
direction that gets a guard switched off. The comparison is now its own
shortcut-free function that the resolver delegates to after its own shortcut, so
existing behavior is unchanged, and the case that would have broken is pinned.

The subagent type is checked before any configuration is read, so an unreadable
config cannot deny a dispatch this guard would never have enforced against.

The input-schema comment on the Cursor hook documented only the fields common to
every event and omitted the ones specific to this one. That omission cost a
halt during this work; it now documents both.

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

* fix(#3045): enforce the resolved dispatch decision, not the host capability

The guard keyed on the registry's dispatch.isolation, which says only that a
runtime is CAPABLE of harness worktrees. The decision that actually governs a
dispatch is the one the workflow resolves after gating, and that legitimately
comes out as sequential in three documented cases: a project setting
use_worktrees false, a per-plan submodule intersection, and the base-check
auto-degrade. The workflow tells the model to omit the flag in exactly those
cases, and the guard was denying every one of them.

The third case matters most. The preceding fix made the base-check degrade on
git timeouts and a missing git binary, where it had previously answered "safe".
That correction is right, and it means a transient hang now degrades to
sequential far more often than before -- so the two changes composed into a trap
where the workflow behaved exactly as designed and the guard blocked it.

The workflow already resolves isolation in shell, deterministically, which is
what makes it a trustworthy source in a way the model-authored call is not. It
now records that resolved value through a dedicated verb, and both guards read
it first. A fresh record is authoritative, so sequential dispatches pass
untouched. Absent or stale, the guards fall back to the capability check
combined with the project's use_worktrees setting, which still covers the case
that never reaches the workflow.

Also widened the matcher to accept Task alongside Agent, since a host that names
the tool Task would otherwise leave the guard silently inert while implying
coverage; stopped assuming Claude when no runtime is declared, which is the
shipped default and would have demanded a Claude-only argument elsewhere; and
made a non-git project inert rather than denied, since advising a worktree
session is not actionable without a repository.

The original diagnosis never modeled sequential mode as legitimate. That
omission is what let this through, and it is now recorded there.

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

* fix(#3045): record at resolution and bind the record to its dispatch

Two independent reviews converged on the same failure: the guard was fail-open in
a default install, so it did not catch the defect it exists to catch. A shipped
project carries no runtime key, which made "runtime not confidently known" the
common case rather than a corner one. A record asserting that isolation was
required but carrying no flag then fell through to a capability lookup that
answered "none", and the dispatch was allowed. The flag itself only arrived from
a second shell block -- the same block a model dropping the argument would also
skip. A test had pinned that behavior as intended.

The record is now written by the resolver, as an unavoidable consequence of
asking for the value, rather than by a step the model is told in prose to go and
run. A guard against a prose-carried value cannot itself depend on prose. Mode,
flag and identifiers are written together and atomically, so the flagless window
is gone, and a record asserting isolation with no resolvable flag now denies
instead of degrading. Runtime is also resolved from the installer's own recorded
default, which makes confident resolution the normal case.

The per-plan submodule gate degrades after the phase-level decision and never
re-recorded, so a plan that legitimately ran sequentially was denied against a
still-fresh phase record. It now records its own, scoped to the plan.

A record also authorized any dispatch for four hours. One phase degrading to
sequential could silently license an unisolated dispatch in the next. Records
now carry phase and plan, the guards require them to match, and the window is
minutes rather than hours -- the resolver rewrites it before every dispatch, so
a long window bought nothing and only widened the hole.

The flag validator rejected any value beginning with two dashes, which is exactly
the form Cursor and Windsurf declare, so their real value could never have been
stored. Writer and reader also derived the record path differently and diverged
inside a linked worktree without local planning state.

The predictable path remains a way to silence the control without leaving a trace
in the diff. It grants no access an agent with shell does not already have, so it
is documented as accepted rather than redesigned around.

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

* fix(#3045): correct the staleness boundary and unmask a vacuous parity test

The remote runner returned twenty failures. One was a real production defect the
boundary case existed to catch: a record whose age exactly equalled the staleness
window was treated as fresh, so it stayed authoritative for one tick past its own
expiry. Freshness is now strictly inside the window.

The parity test meant to stop the two guards' executor lists from drifting could
never have failed. Its project fixture was a bare directory rather than a
repository, so the non-git inert branch answered before the executor list was
ever consulted. It asserted agreement it never actually measured. The fixture is
now a real repository, like every sibling in the file.

A test also asserted that Windsurf declares the worktree flag. It does not --
Windsurf resolves to no isolation by design, having no named concurrent dispatch
to isolate. The test claimed a registry fact that was never true, and a comment
in the resolver repeated it. Both corrected, and the test now proves what it
should have all along: that the parser accepts any bare flag value, rather than
one runtime's supposed value.

The new guard was missing from the bundled-hook whitelist, which is the surface
that decides what actually ships, and the per-plan gate had gained calls to the
launcher without the preamble those calls require. The changeset carried
parenthetical product descriptions the purity rule forbids.

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

* chore(#3045): backfill changeset pr number

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

* test(#3045): make the guard tests hold on Windows

Two tests redirect HOME to control where the installer-persisted runtime default
is read from. Node resolves the home directory from USERPROFILE on Windows and
never consults HOME, so both silently read the real runner profile, found no
recorded runtime, and asserted against a project the hook had not recognised. The
production code was already correct in asking the platform rather than the
variable; only the tests were wrong to assume one variable answers everywhere.
The helpers now mirror the override onto both.

The symlink spoofing test also created a directory symlink unconditionally, which
needs elevated privileges on Windows. It survived on this runner, but it would
fail on any host without them, so the creation is now attempted and the test
skips explicitly when it cannot be done -- a bare return would have counted as a
pass and hidden the gap.

Skipping alone would have left the platform uncovered, so the behaviour it proves
is now also driven in-process through an injected realpath, following the seam
already used for the clock. That case no longer depends on privileges at all, and
the end-to-end test keeps its original assertions wherever symlinks work.

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

---------

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-08-04 23:42:16 -04:00
Tom Boucher
fd07e1a357 fix(#2850): resolve the active workstream in the statusline GSD-state segment (#3012)
* test(#2850): add failing-first tests for workstream statusline state

readGsdState only ever reads the flat .planning/STATE.md via a directory
walk-up; it has no path for .planning/workstreams/<ws>/STATE.md and never
consults GSD_WORKSTREAM or the stored active-workstream pointer, so the
GSD-state segment silently disappears in workstream mode. These tests
prove the RED before the fix lands.

Uses shared saveSessionEnv/restoreSessionEnv/clearSessionEnv helpers now
added to tests/helpers.cjs (single source of truth for the session-env-var
save/clear/restore pattern also used by tests/active-workstream-store.unit.test.cjs,
which is updated here to consume the same shared helpers instead of its own
local, already-diverged copy).

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

* fix(#2850): resolve active workstream in the statusline

readGsdState only ever walked up looking for a flat .planning/STATE.md; it
had no branch for .planning/workstreams/<ws>/STATE.md and never consulted
GSD_WORKSTREAM or the stored active-workstream pointer, so the GSD-state
segment silently vanished in workstream-mode projects with no root
STATE.md (exit 0, no diagnostic).

Reuses the existing CLI>env>store resolution seam (resolveActiveWorkstream,
active-workstream-store.cts) and the existing mode-detection/path-building
seam (listAvailableWorkstreams/planningPaths, planning-workspace.cts)
rather than re-implementing either inline. When workstream mode is
detected but nothing resolves, readGsdState now returns a
{noActiveWorkstream:true} sentinel that formatGsdState/formatGsdStateCompact
render as "no active workstream" -- observable, never silent emptiness.
Flat-mode behavior and the case where a resolved workstream has no
STATE.md yet are both unchanged.

Adds active-workstream-store.cts's peekActiveWorkstream: a read-only
sibling of getActiveWorkstream. resolveActiveWorkstream's default store
lookup self-heals a stale/invalid pointer by deleting it
(adapter.clear()) -- correct for a command, but not for a renderer
invoked once per prompt, which must never mutate persistent, possibly
cross-session state as a side effect of drawing a screen. The statusline
now injects peekActiveWorkstream via resolveActiveWorkstream's own
getStored override, keeping the env>store precedence itself fully reused
while removing only the store tier's write side effect. This satisfies
the issue's AC4 ("the fix is purely additive to what's displayed").

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

* chore(#2850): backfill changeset PR number to 3012

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-08-02 21:44:04 -04:00
0xdhx
c61dd49d95 enhance(#2255): blocking catastrophic-shrink guard for curated .planning/ writes (#2301)
* feat(#2255): blocking catastrophic-shrink guard for .planning writes

Adds hooks/gsd-write-guard.js, a PreToolUse hook that hard-blocks
(decision: 'block', exit 2) a whole-file Write collapsing a curated
.planning/ artifact (ROADMAP.md, .planning/milestones/*-ROADMAP.md,
STATE.md) below 40% of its on-disk line count. Files under 40 lines
are exempt; GSD_ALLOW_PLANNING_SHRINK=1 (named in the block message)
bypasses for legitimate milestone resets.

Fix 3 of #973 — the only defense independent of per-agent tool config.
Registered on the Claude plugin surface (hooks.json), settings-json
runtimes (runtime-hooks-surface.cts, self-contained pattern), Kimi
spec, and the OpenCode/Kilo plugin buses. Golden install fixtures and
INVENTORY regenerated; regression tests negative-controlled (16/16
RED with the hook absent, 16/16 GREEN with it present).

* chore(#2255): backfill changeset pr number to 2301

* enhance(#2255): address review — fail-closed reads, typed block output, registration, property test

Review fixes for trek-e's CHANGES_REQUESTED on PR #2301:

- Blocker 2: register gsd-write-guard.js in BUNDLED_GSD_HOOK_FILES
  (no-shipping-drift test).
- Blocker 3: update the always-on hook enumerations in ADR-766 and
  CONTEXT.md from six to seven.
- Major 4: fail CLOSED on non-ENOENT read errors — only a missing file
  (new-file Write) passes; EACCES/EISDIR/ELOOP/etc now block, with a
  typed readError field and the override still honored. Tested, with a
  negative control against the pre-fix hook.
- Major 5: fast-check property test for the SHRINK_RATIO/FLOOR_LINES
  budget contract (blocked ⟺ newLines < oldLines*SHRINK_RATIO above the
  floor; sub-floor always exempt), boundary examples pinned.
- Major 6: block output now carries typed oldLines/newLines/
  overrideEnvVar fields; tests assert on those instead of regexing the
  free-form reason string.
- Minor: CURATED_PATTERNS are case-insensitive (case-insensitive-FS
  bypass on macOS/Windows); limit+1 boundary tests added for both the
  floor and the ratio.

* enhance(#2255): engage the write guard on Kimi's native payload shape

The guard shipped with Claude-vocabulary checks (tool_name 'Write',
tool_input.file_path), which #2304 showed leaves a guard dormant on
Kimi: the [[hooks]] matcher is registered pre-translated but kimi-cli
forwards its native payload verbatim — tool_name 'WriteFile' (bare or
module-qualified) and tool_input.path per its tool schemas
(src/kimi_cli/tools/file/write.py). The guard matched, saw an unknown
name, and exited 0.

Apply the same per-guard normalization PR #2326 gives the three
sibling guards (name + field mapping, inlined — hook scripts stage as
standalone files), and write the block reason to stderr as well as
stdout JSON: Kimi feeds stderr, not stdout, back to the model on
exit 2, so a stdout-only reason blocks without telling the model why
or naming the documented override.

Regression tests pipe Kimi-shaped payloads (engage, qualified-name,
stderr-reason) plus exemption pins (StrReplaceFile stays out of scope
by design; non-curated paths pass) — verified red against the pre-fix
guard, green after.

* enhance(#2255): rebase onto next; regenerate golden-parity fixtures

* enhance(#2255): wire the escape hatch into complete-milestone's reorganize step

Review Blocker 1: the guard hard-blocked /gsd:complete-milestone's ROADMAP
reorganize — the tree's only legitimate milestone reset and the exact caller
GSD_ALLOW_PLANNING_SHRINK was built for. The reorganize step now performs the
rewrite through a shell write with the hatch set on the command (a hook
inherits the runtime env, so a bare Write cannot carry a per-step override),
and a binding test derives the env var name from the guard's typed output and
asserts (a) the workflow step sets it and (b) the guard passes the identical
catastrophic payload under it — so the next complete-milestone.md edit cannot
silently re-break the wiring.

* enhance(#2255): drop dead Edit-class mapping from normalizeKimiPayload

Review Major 1: StrReplaceFile -> 'Edit' and the old_string/new_string
reconstruction were unreachable-by-effect — the guard exits 0 for any
tool_name !== 'Write', so nothing ever read the fields they set, leaving
guaranteed-surviving mutants against the Stryker bar. The map now carries
only WriteFile -> 'Write'; the StrReplaceFile exemption test message states
the fall-through it actually exercises.

* enhance(#2255): review minors — American spellings; writeSync before exit(2)

Minor 1: normalised/normalise -> American house style. Minor 2: the two
block paths wrote stdout+stderr via async pipe writes then exit(2) —
async-on-Windows, unflushed at exit; fs.writeSync(1/2, ...) makes the block
payload durable.

* enhance(#2255): assert stderr equals the typed reason, not raw prose

Minor 3: the last raw-text match in the suite pinned override-name prose on
stderr. The contract is "stderr carries the reason Kimi feeds back" — now
asserted as stderr non-empty and byte-equal to the parsed stdout.reason.

* enhance(#2255): bind the write-guard's Kimi normalization into the parity test

Review Major 2: the guard's normalizeKimiPayload is a 4th inlined copy with
nothing binding it. This extends PR #2326's kimi-guard-normalization-parity
test (same path and helpers, authored as a superset so either merge order
resolves cleanly): sibling byte-parity is existence-gated zero-or-all —
trivially green until #2326 lands, full-strength after — and the write-guard
copy is bound semantically (map is the value-inverse of convertKimiToolName;
the Kimi name for Write must map, or the guard is dormant on Kimi; the
path -> file_path half must be present). Byte-parity is deliberately not
asserted for this copy: it legitimately omits the Edit-class mapping
(Major 1 — dead code in a Write-only guard).

* enhance(#2255): refresh golden-parity fixtures for revised guard + workflow

* chore(#2255): regenerate golden fixtures after rebase onto next

The committed fixture hashes were generated against a tree predating
next's latest 11 commits, which independently modified the same
install-parity surface. Rebased onto next and regenerated with
`npm run gen:golden`.

Verified: against upstream/next the regenerated fixtures differ by
exactly this PR's own entries -- hooks/gsd-write-guard.js (new),
hooks/managed-hooks-registry.cjs, plugins/gsd-core.js, and
gsd-core/workflows/complete-milestone.md. No unrelated drift.

* fix(#2255): regenerate workflow size baseline for complete-milestone

`complete-milestone.md` grew 31071 -> 32061 (+990) when the round-2
review fix bound GSD_ALLOW_PLANNING_SHRINK=1 into the reorganize step,
but tests/workflow-size-baseline.json was never regenerated. The
per-file workflow baseline test (issue #1074) failed on
ubuntu-latest/22 and both macOS shard 1/3 jobs.

The growth is justified: it is the escape-hatch binding requested in
review round 2 (the guard must not hard-block the tree's only
legitimate milestone reset), not incidental bloat.

Regenerated via `npm run size:baseline`; the diff is exactly the one
entry.

* chore(#2255): regenerate golden fixtures and size baseline after rebase onto next

* enhance(#2255): bind the shrink escape hatch mechanically — single-use sentinel the guard consumes

Round-5 M1: the per-step `GSD_ALLOW_PLANNING_SHRINK=1 tee` prefix was inert
(no PreToolUse hook exists on Bash in this family; the write succeeded by
dodging the guard, not by the override firing) and the protection was prose.
The hatch is now a transport code consults: complete-milestone's reorganize
step arms `.planning/.gsd-allow-shrink` with the target's path, keeps the
Write tool as the sanctioned path, and the guard — at the block point only —
verifies the sentinel is fresh (15 min) and names the pending target, then
CONSUMES it and allows that one write. Path-bound + single-use + freshness
keep it from becoming a standing unlock. The env var remains as the
interactive transport, where it can actually reach the hook.

Regression tests written first (negative control: 3 failed pre-fix): the
armed-sentinel Write passes and consumes; stale does not exempt; a token for
a different file neither exempts nor is consumed; the binding test now takes
the sentinel name from the guard's typed output (overrideSentinel), asserts
the step arms it, and asserts the step no longer routes the rewrite around
Write via a shell pipe.

Also in this commit, same file:
- m2: block emission is exception-safe — emitBlock() wraps both writeSync
  sites in their own try/catch that still exits 2, so an EPIPE can no longer
  convert fail-closed into the outer catch's fail-open.
- Header discloses the two reviewed design limits (cumulative sequential
  shrink; lexical match vs symlinked paths) per round-5 scoping.

* docs(#2255): document the sentinel transport across guard surfaces; changeset ends with the (#2255) parenthetical (m4)

USER-GUIDE bullet, INVENTORY row (en + ja/ko/pt/zh), the
runtime-hooks-surface registration comment, and the changeset now describe
both hatches — the single-use sentinel for workflow steps and the env var
for interactive use — instead of implying a per-step env can reach a hook.
The changeset's trailing `Resolves #2255.` prose becomes the `(#2255)`
parenthetical the repo's fragments use (round-5 m4).

* chore(#2255): regenerate derived families on the rebased tree (full sweep)

Full generator sweep after rebasing onto next @ the body-parser-patched
lockfile: build, gen-inventory-manifest, gen:golden, size:baseline. Every
regen delta verified to be either a PR-owned entry (gsd-write-guard.js,
complete-milestone.md, INVENTORY/USER-GUIDE) or exact convergence to next's
committed value for entries our arbitrary-side conflict resolution had left
stale (all 18 runtime fixtures checked mechanically).

* test(#2255): use helpers.cleanup for sentinel teardown, not raw fs.rmSync

The repo's local/no-raw-rmsync-in-tests rule exists for the Windows-EBUSY
retry budget; the sentinel disarm now rides it like every other teardown.

* chore(#2255): regenerate derived families after rebase onto next

Full sweep on the rebased tree (build -> gen-inventory-manifest ->
gen:golden -> size:baseline). Every delta is either a PR-owned entry
(hooks/gsd-write-guard.js, its registration surfaces
hooks/managed-hooks-registry.cjs and the two plugin buses,
gsd-core/workflows/complete-milestone.md) or exact convergence to
next's committed value across all 18 runtime fixtures.

* chore(#2255): regenerate derived families after rebase onto next @ a5180d96

Rebase onto current `next` (a5180d96) resolved 12 conflicting
golden-install-parity fixtures; all regenerated via the full generator
sweep (build, gen:golden, size:baseline) rather than a single generator.

`lint:generated-sync` reports every generated artifact in sync. All 45
differing fixture keys and the single workflow-size-baseline entry map
to files this PR actually touches; no foreign drift.

* fix(#2255): remove the stale unguarded reorganize_roadmap step (round-8 blocker)

complete-milestone.md carried a second ROADMAP-collapsing step,
`reorganize_roadmap`, distinct from the sentinel-armed
`reorganize_roadmap_and_delete_originals` this PR wired. It is a vestige
of the pre-archive-then-reorganize design: it sits BEFORE
archive_milestone, so executing it as written would collapse ROADMAP.md
before the archive snapshots the full phase detail — and its Write is
exactly the shape gsd-write-guard hard-blocks, with no hatch armed. The
file's own success criteria describe only one reorganize outcome
(Backlog-preserving, overwrite-in-place — the later step's properties),
and archive_milestone points forward to "the reorganize step".

Removed rather than wired, per the round-8 review's confirm-and-remove
option. A new binding test asserts the sentinel-armed step is the ONLY
reorganize step in the workflow, so an unguarded collapse step cannot be
silently reintroduced (negative-controlled: fails against the pre-fix
tree). Golden-parity fixtures and the size baseline regenerate for the
shrunk file; every changed fixture key is complete-milestone.md's own.

* test(#2255): document why the read-error injection is a path collision, not an fs monkeypatch

Round-8 nit: the non-ENOENT tests inject via a directory-at-target-path
collision instead of the repo's fs-method monkeypatch pattern. That is
deliberate, not drift — runHook exercises the hook as a spawnSync child
process, so an in-process fs.readFileSync patch (the pattern the cited
siblings use on require'd, in-process code) can never reach the code
under test. Record the reasoning at the injection site.

* chore(#2255): regenerate derived families after rebase onto next @ 0d08c320

Rebase onto current next (0d08c320) for the CONFLICTING/DIRTY state. All 32
conflicts were generated artifacts (19 golden-install-parity, 12 install-tree,
workflow-size-baseline); resolved arbitrarily and regenerated via a full
generator sweep (build, gen:golden, size:baseline, gen-inventory-manifest)
rather than hand-merged. No source conflicts.

Regen diff verified against the PR's changed-file set: 7 distinct differing
keys, all PR-owned (gsd-write-guard.js, managed-hooks-registry.cjs,
plugins/gsd-core.js, complete-milestone.md, and their .kimi mirrors).
lint:generated-sync clean.

* chore(#2255): regenerate derived families after rebase onto next @ 9138271b

Conflict set was 20 paths, every one a generated artifact, zero source
conflicts — resolved arbitrarily during the replay and regenerated here,
per the maintainer's round-9 recipe (never hand-merged).

Generator sweep (not just gen:golden): npm run build, gen:golden,
size:baseline, gen-inventory-manifest, gen:registry. INVENTORY-MANIFEST
came back byte-identical, so the merged value was already correct.

Regen diff verified == PR-touched entries: every differing leaf key
attributes to a file this PR changes (complete-milestone.md, the guard,
managed-hooks-registry.cjs, both plugin buses) — derived from the
changed-file set, not a feature-name filter.

* fix(#2255): port the #2595 Kimi-payload hardening the base landed for the sibling guards

Self-found via the round-10 base sweep: a8b40fa5 (#2547/PR #2595) hardened
gsd-prompt/read/worktree-path-guard's normalizeKimiPayload after this PR was
authored, and this guard carried all three pre-fix shapes:

- `path` now wins outright over a model-supplied `file_path` — kimi-cli's
  WriteFile schema carries no `file_path`, so a payload pairing a curated
  `path` with a spurious `file_path: ""` had the guard reading '' and
  exiting 0 while kimi-cli wrote to `path` (one-key bypass, no crash needed).
- null/primitive payloads pass through deliberately instead of throwing into
  the fail-open catch.
- the `file_path` read is typed (`typeof === 'string'`), closing the
  crash-to-allow on `[]`/`{}` — this is what the base-added
  kimi-guard-typed-payload-reads scan flags.

Negative-controlled: the shadowing payload exits 0 against the pre-fix guard
and 2 against this one.

* fix(#2255): round 9 Major 2 — stop printing the sentinel recipe in the agent-facing denial

The block message ended by telling the blocked agent exactly how to arm the
single-use sentinel — handing the #973 actor a mechanical self-authorization
in the moment it is blocked. The recipe is gone from the prose; the
corrective advice and the env override's name stay (the latter is a #2255
acceptance criterion, and a per-step env prefix cannot reach a hook anyway),
and the typed overrideSentinel field stays for the binding tests. The hatch
remains documented in USER-GUIDE.md and complete-milestone.md, where humans
and the workflow engine read.

* fix(#2255): round 9 Minors 1-2 — realpath-resolve the target before the curated match; disclose the /i Linux cost

Minor 1: a Write to a non-curated path that symlinks into a curated file was
not matched while writeFileSync followed the link — the target is now
realpath-resolved before the curated match (ENOENT keeps the lexical
resolution so new-file Writes still pass; any other realpath error falls
through to the read, which fails closed). Negative-controlled: the symlink
payload exits 0 against the pre-fix guard, 2 against this one. Test skips on
win32, where symlink creation needs privilege.

Minor 2: the header's design-limits block now names the unconditional /i
cost on case-sensitive Linux (a genuinely distinct .planning/roadmap.md is
also treated as curated) next to the stateless limit, and drops the closed
symlink limit.

* test(#2255): round 9 Minors 3-4 — CRLF counting pin + a passing Write leaves a fresh sentinel unburned

Minor 3: countLines' split('\n') is CRLF-safe for a count (the \r rides
along), confirmed by trace in the review — this pins it against this repo's
recurring CRLF regressions, on both sides of the compare and at the 40%
boundary.

Minor 4: consumeSentinelFor runs only after the ratio check would block, so
a within-tolerance Write never burns the workflow's token — true by
construction, previously un-asserted.

* fix(#2255): round 9 Major 3 — correct the stale env-var line in archive_milestone's summary

complete-milestone.md's "After archival" bullet still said the reorganize
happens "under GSD_ALLOW_PLANNING_SHRINK=1" — the wording from the round-2
design this PR's own history rejected in round 5 (a per-step env var cannot
reach a hook; setting it in a Bash step silently does nothing). It now points
at the sentinel mechanics the reorganize step actually documents, matching
that step and USER-GUIDE.md.

* docs(#2255): round 9 Major 1 — user-facing docs state the stateless per-Write limit

The changeset and USER-GUIDE described the guard as covering "catastrophically
shrinks" with no caveat, while the stateless design was disclosed only in the
hook header — an operator reading the shipped docs would conclude iterative
erosion is covered. Both surfaces now state the per-Write comparison and the
erosion non-goal explicitly, in line with what the guard does.

* fix(#2255): round 10 Blocker 1 — arm the hatch in the roadmapper's curated writes

gsd-roadmapper Step 7 Writes both .planning/ROADMAP.md and .planning/STATE.md
wholesale, and /gsd:new-milestone spawns it against the OUTGOING milestone's
files. new-milestone's `phases.clear` archives phase DIRECTORIES, never
ROADMAP.md, so nothing compacts it first, and no ordering rule forces
/gsd:complete-milestone to run before /gsd:new-milestone.

Measured against the shipped hook at the #973 file size (292 lines): a new
4-phase roadmap lands at 18.2% and an 8-phase one at 31.8% — both blocked; only
a 12-phase replacement (45.5%) clears. So the collapse is reachable on a
first-party flow, which is the failure mode #2255 para 4 says the guard must not
have.

Arms the single-use sentinel immediately before each Write, one per target
(the token is path-bound and single-use, so one arming cannot cover both), and
gates each arming on `[ -f ]` so the /gsd:new-project path — where the guard
already exempts via ENOENT — strands no unconsumed token.

Binding test derives the sentinel name from the guard's own typed output, so a
rename on either side fails the suite instead of silently unwiring the hatch.
Negative-controlled: 2 assertions fail against the pre-fix roadmapper.

* docs(#2255): round 10 Major 2 — scope the claim to the guarantee that ships

The sentinel is a plain file, so an agent that would reason past an advisory
can arm one with a single Bash call it is already permitted to make. The
"only defense independent of per-agent tool config" framing outran that, and
the changeset was on its way into CHANGELOG.md.

Retitles the claim on all three surfaces (changeset, guard header, USER-GUIDE)
to what the guard actually delivers: it blocks accidental and single-shot
collapse and is not a defense against a determined agent; what it converts is
"ignore a sentence" into "take one deliberate, path-bound, single-use,
auditable action".

Pinned by test on the DURABLE surfaces only — the guard header and USER-GUIDE.
The changeset fragment is deliberately not pinned: it is consumed at release,
so a test reading it would start failing the moment the release lands. The
bound-statement assertion normalizes comment markers and whitespace first, so
it pins the claim rather than the paragraph's line wrapping.

Negative-controlled: both assertions fail against the pre-fix surfaces.

* test(#2255): acknowledge the roadmapper growth from the round 10 Blocker 1 wiring

The emitted-attribution gate (#2719/#2767) flags gsd-roadmapper.md growing 1130
bytes without an acknowledgment. The growth is the Blocker 1 sentinel wiring
plus the rationale a future editor needs to keep it, so it gets an ack fragment
rather than a silencing regen — the gate's own message is explicit that there is
nothing left to regenerate.

Fragment is PR-scoped (2301-…) per the gate's naming instruction, and uses the
plain-string reason form the shipped fragments use.

Verified against the TRUE upstream tip, not the fork's origin/next: a stale
origin made this same gate report unrelated phantom drift (1 emitted path + 6
grown files + 5 stale acks) that vanishes when GSD_EMITTED_BASE is pinned.

* test(#2255): renumber the roadmapper PROSE_ALLOWLIST pin after the Step 7 wiring

CI red on shard 2/3, all four platforms. The #2751 gate keys PROSE_ALLOWLIST on
{file, line}; the Blocker 1 wiring added 18 lines above the allowlisted
parenthetical in agents/gsd-roadmapper.md, moving it 624 -> 642. Both halves of
the gate then fired: the moved line reads as a new offender, and the stale
entry no longer matches anything.

Line content at 642 is byte-identical to what the entry describes — a
descriptive "e.g." naming SDK queries a user could run — so this is a
renumber, not a re-classification.

Swept the defect class rather than the instance: agents/gsd-roadmapper.md is
the only line-pinned reference to any file this round changed.

Negative-controlled: both assertions fail against the un-renumbered allowlist.

---------

Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-08-01 21:19:49 -04:00
0xdhx
cc3ee301a7 fix(#2544): stage the CommonJS marker in GSD-owned dirs, not the config root (#2593)
* fix(#2544): stage the CommonJS marker in GSD-owned dirs, not the config root

installSharedHooksBundle wrote `{"type":"commonjs"}` over
<configRoot>/package.json unconditionally — no existence check, no merge,
no backup — on every install and every /gsd-update re-install. On the 11
affected runtimes that file is often user-owned; on OpenCode and Kilo it is
the documented place to declare local-plugin npm dependencies, so a user's
name/type/dependencies/scripts were destroyed on each run.

The uninstall path already read the file and unlinked it only on an exact
content match. That asymmetry was the defect: the discipline existed in the
codebase, it just was not applied on the write side.

Move the marker into the directories GSD creates and fills with its own .js
files — hooks/ (all shared-hooks runtimes, incl. Kimi's own root) and the
nativePlugin dir (plugins/ for OpenCode+Kilo, extensions/ for pi) — and stop
writing the config root entirely. New src/commonjs-marker.cts owns the marker
string plus one ownership predicate (absent / gsd-owned / foreign, fail-closed
on an unreadable file) shared by ensureCommonJsMarker and removeCommonJsMarker,
so install and uninstall cannot drift apart again.

Nothing else depended on the config-root marker: package identity is baked at
build time (#378/#498) and version resolution prefers gsd-core/VERSION and
already tolerates a missing root package.json (#1383) — Codex has installed
without one all along. A package.json in plugins/ or extensions/ is inert to
plugin discovery, which globs *.{ts,js} only (see installer-migration 006).

Uninstall retires the pre-fix config-root marker, so upgrading users are
cleaned up on removal, and still never touches a file it did not write.

* fix(#2544): point the changeset fragment at the filed PR

The fragment's `pr:` field is only knowable after `gh pr create` returns.

* fix(#2544): register commonjs-marker.cjs in the tsc-generated ESLint ignore set

bin/lib/commonjs-marker.cjs is tsc output (src/commonjs-marker.cts is the
linted source), so it belongs in the ADR-457 ignore list like its siblings.
Clears the lint-tests no-var failure and the repo-invariants
"linted xor ignored" migration-state test.

* fix(#2544): pin the kimi CommonJS marker to hooks/, not the ~/.kimi root

The UPGRADE 1 test still asserted the pre-#2544 marker location
(~/.kimi/package.json). The marker now lives inside ~/.kimi/hooks — the
directory GSD itself creates — matching the updated golden-install-parity
and install-tree fixtures. Also asserts the root marker is NOT written.

* fix(#2544): make the CommonJS marker write path non-fatal

Review round 2, Major 3 + Minor 1 + the stagedHooks nit.

ensureCommonJsMarker rethrew any non-EEXIST write error and neither call site
caught it, so EACCES on a read-only hooks/, EROFS, or ENOSPC aborted the whole
install with a raw stack trace. Every other marker interaction in the module is
best-effort — removeCommonJsMarker swallows unlink failures, classifyMarker
swallows read failures — and this was the write path, i.e. the one most likely
to fail on a locked-down config dir. It now returns a new 'failed' outcome and
both call sites warn and continue.

Sibling found while sweeping for the same defect class: fs.mkdirSync sat
OUTSIDE the try block, so an unwritable parent threw past the guard entirely.
Creating the directory is the same environmental hazard as writing into it, so
it moved inside.

Also in this file:

- The hooks marker is now gated on `stagedHooks && hooksOk`, not stagedHooks
  alone. stagedHooks is computed from the SOURCE listing before the copy loop,
  so it stays true when the copies land but verifyInstalled() then fails —
  marking a hooks/ GSD did not successfully populate claims an ownership the
  install did not earn.
- The uninstall rmdir of the native plugin dir is gated on GSD having actually
  removed something from it. Hoisting it out of the adapter-exists guard (so
  the marker-only case could prune) had silently widened it into deleting a
  user-created but empty plugins/ or extensions/ dir — the same "don't touch
  territory GSD didn't fill" principle this issue is about, inverted.
- Kimi's pre-#2544 marker at its native hook root (~/.kimi) is retired at the
  same call site that writes its replacement. That path is outside kimi's
  configDir, so installer-migration 007 structurally cannot reach it.

* fix(#2544): retire the stale config-root marker via installer-migration 007

Review round 2, Major 1 — the PR's headline claim was false for existing
installs. Upgraders kept BOTH markers: the new one under hooks/ and the stale
{"type":"commonjs"} at the config root, so their config root stayed pinned to
CommonJS and their dependency manifest stayed gone until they uninstalled.

The migration is unusual in one way, and it is the part worth reviewing: the
config-root marker was never recorded in gsd-file-manifest.json (writeManifest
records hooks/, agents/, commands/, scripts/ and the native plugin, never a root
package.json), so classifyArtifact answers 'unknown' for it and the planner's
own guard downgrades a remove-managed on an 'unknown' classification to
preserve-user. 007 therefore supplies the "purpose-built detector for an old
GSD-owned shape" that docs/installer-migrations.md#remove-managed sanctions —
exact content match, the same predicate removeCommonJsMarker has always used —
and declares the resulting classification on the action. A package.json with any
other content is left untouched, and there is deliberately no backup-and-remove
branch: a non-matching file here is not a patched GSD artifact, it is somebody
else's file.

Scope is all runtimes. The `runtimes` field is OMITTED rather than `[]`:
validateStringArray requires the field to be non-empty WHEN PRESENT, while the
runtime filter treats an empty array as "all" — so `runtimes: []` throws at plan
time and the migration never runs. The metadata test pins this.

Kimi is a deliberate carve-out, named in the migration's own header: its marker
lived at ~/.kimi, outside kimi's configDir, and migration relPaths are
structurally confined to configDir. It is retired by the installer instead.

Registration: shipped-migrations table, .gitignore for the emitted .cjs, the
EXPECTED_CHECKSUMS baseline, and the ESLint ignore set. That last one is not
copied from migration 006 by rote — 006 needs no entry because it imports
nothing, while 007 imports node builtins, so tsc emits its __importDefault
helper and the `var` in it trips no-var. This is the same lint gate that made
round 1 red.

* test(#2544): fault-injection and multi-runtime marker coverage

Review round 2, Major 2 + Minors 4 and 5.

Major 2 — CONTRIBUTING.md:514-531 is mandatory for install/uninstall flows and
the suite had no fs monkeypatching at all. Every branch now covered is one whose
doc comment claims it as the module's safety posture:

- classifyMarker non-ENOENT lstat error -> 'foreign' (the fail-closed rule),
  with an ENOENT control alongside it so the test discriminates rather than
  just asserting one side
- classifyMarker readFileSync throw -> 'foreign' (present-but-unreadable never
  downgrades to the permissive answer) — the fixture's bytes are exactly GSD's
  marker, so the test fails if the code ever answers on content it could not read
- a DIRECTORY at the marker path (CONTRIBUTING:521; the symlink case was already
  covered with a real symlink, the directory case needs no injection at all)
- the ensureCommonJsMarker TOCTOU EEXIST branch — the entire reason for flag:'wx'
- the new 'failed' outcome, for both writeFileSync (EACCES/EROFS/ENOSPC) and the
  mkdirSync that used to sit outside the guard
- removeCommonJsMarker unlink throw -> false

These save and restore fs methods in `finally` rather than using chmod 0o000,
which does not fault under root and would pass vacuously in root Docker and CI.

Minor 4 — uninstall was driven for opencode only. pi's extensions/ and both
kimi locations now have behavioral coverage, install and uninstall, each paired
with a user-authored-file case proving GSD leaves it alone.

Minor 5 — the stagedHooks gate had no assertion behind its stated reason.
A pre-existing, GSD-untouched hooks/ directory is now driven through a runtime
that declares skipSharedHooksInstall and asserted to stay marker-free, with its
user content intact.

Also regression-tests the uninstall rmdir gate from the previous commit: an
empty plugin dir GSD removed nothing from must survive.

* docs(#2544): correct stale marker prose, register the module, document the trade-off

Review round 2, Minors 2, 3 and 6.

Minor 2 — six files asserted the installed ROOT ships the synthetic marker.
None was load-bearing (all three walk-up consumers are VERSION-first with
try/catch and the marker never carried a `version`), but ADR-457:52 is the
rationale for keeping a generated module, so a future reader would mis-derive
the constraint from it. Each site is corrected to what is now true: the
installed tree carries no package.json with a .name at all, because the only
ones GSD stages are {"type":"commonjs"} markers and they now live in GSD's own
directories.

Two of the six needed more than a location swap. hooks/gsd-check-update-worker.js
and the platform-gate test both described `require('../package.json').name`
resolving to undefined; post-#2544 that require does not resolve at all, so the
history is kept accurate and the present-tense claim corrected rather than just
moved. And src/runtime-artifact-conversion.cts described the no-root-package.json
case as Codex-only — it is now every runtime, which strengthens that comment's
own argument for lazy resolution. The generated .cjs sibling needs no edit: it
is gitignored build output, not a tracked file.

Minor 3 — src/commonjs-marker.cts had no CONTEXT.md entry, unlike every peer
module, and CONTEXT.md is the #2 co-change partner of bin/install.js. Added,
including the fail-closed posture and the never-throws contract.

Minor 6 — the plugins//extensions/ marker shadows the config root for all .js
siblings, so an OpenCode/Kilo user's ESM plugin/*.js stays broken. That is
exactly what #2544's Fix section prescribed and it is disclosed in the PR body,
but the PR body is not documentation. It now lives in the OpenCode section of
docs/how-to/install-on-your-runtime.md, stated as a real constraint rather than
a pure improvement, with the .ts mitigation and a fallback for ESM plugins.

* test(#2544): attribute the CommonJS marker in the emitted-provenance rules

The differential emitted-attribution gate (#2723, landed on `next` after this
branch was cut) went red on the macOS shards once this PR rebased onto it. Two
distinct causes, both real gaps rather than noise:

1. `plugins/package.json` and `extensions/package.json` matched NO rule — the
   `native-plugin` rule covers `*.{js,cjs,mjs}` only, so the marker read as an
   unattributed emitted family.
2. `hooks/package.json` fell through to `hooks-built`, which attributes an
   emitted `hooks/<X>` to a repo source `hooks/<X>`. There is no
   `hooks/package.json` in the repo, so it resolved to a nonexistent path.

Cause 2 is exactly the failure already documented three lines above it for
Copilot's `gsd-session.json` — "a code literal, not a built script" — so the fix
follows that precedent rather than inventing one: `package.json` is excluded
from `hooks-built` the same way, and a dedicated `commonjs-marker` rule
attributes the family across all four roots it can appear in (both hooks roots
plus `plugins`/`extensions`) to the sources that actually emit it.

Deliberately a RULE, not an entry in tests/emitted-drift-ack.json. An ack is for
a one-off ripple and goes stale by design — the gate fails a stale ack precisely
so it cannot pre-clear the next change on that path. These markers are a
permanent part of the emitted tree from #2544 onward, so they need standing
attribution.

Verified by reproducing the CI failure locally with GSD_EMITTED_BASE: 3
provenance errors + 12 unattributed paths before, 35/35 green after.

* fix(#2544): route the #2717 hooks-surface marker helpers through commonjs-marker

#2717 landed a second copy of ensureCommonJsMarker/removeCommonJsMarkerIfGsdOwned
in src/runtime-hooks-surface.cts for the runtimes that stage .js hooks via
dedicated paths (cursor/windsurf/codex). That copy had drifted from this PR's
module on the two properties that matter:

  - ownership probe: `fs.existsSync` FOLLOWS symlinks and reports false for a
    DANGLING one, so a dangling package.json symlink classified as absent and
    the write went straight through it. Demonstrated: against the pre-fix copy,
    ensureCommonJsMarker() on a hooks/ dir holding a dangling package.json
    symlink returns true and creates {"type":"commonjs"} OUTSIDE that directory.
  - create: a plain writeFileSync leaves the classify->write window open, where
    commonjs-marker creates with flag:'wx' (O_EXCL).

Both helpers now delegate to src/commonjs-marker.cts, which is what this PR's
own docstring already claimed was the single place these rules are enforced.
Exported signatures are unchanged (still boolean), so bin/install.js and the
#2717 tests are unaffected.

The new subtest is the only coverage that fails if the duplicate is ever
reintroduced — the two implementations agree on every non-adversarial input, so
the existing suites pass against both.

* test(#2544): pin the stagedHooks gate on zcode, not windsurf

The Minor-5 coverage picked windsurf because hostBehaviors.skipSharedHooksInstall
kept it out of the shared hooks bundle, so GSD staged nothing into hooks/ and the
marker was correctly absent.

#2717 changed that premise: cursor/windsurf/codex now stage their .js hooks via
dedicated paths and get the marker beside those scripts. Measured on this tree,
windsurf stages 2 .js hooks and receives a marker — so the assertion was pinning
behaviour that is now wrong, not the gate it was written for.

ZCode is the durable choice: per #1821 it has hooksSurface:'none' AND no plugin
surface to spawn hooks, so GSD stages no .js there by either route (measured: 0
staged, no marker). The property under test is unchanged — a user-created hooks/
directory GSD never fills stays marker-free.

* test(#2544): use the shared cleanup helper in the migration test

Addresses the review's Major 1. The suppression's stated reason — "no helpers
import available" — was not correct: tests/helpers.cjs exports cleanup, and the
other test file added in this same PR imports it (tests/commonjs-marker.test.cjs).

The local reimplementation dropped two protections that are live on this repo's
windows-latest lane: the CWD guard (Windows cannot remove a directory that is the
current working directory) and the 20 x 250ms retry budget that absorbs the
deferred-scan handle Windows Defender holds on newly-written files.

Local function and suppression both removed; local/no-raw-rmsync-in-tests now
passes without one.

* test(#2544): expect hooks/package.json for the #2717 runtimes

The fresh-install contract table predates #2717, which stages cursor/windsurf/
codex .js hooks via dedicated paths and writes the CommonJS marker beside them.
All three therefore now receive hooks/package.json legitimately.

Measured on this tree: codex stages 3 .js hooks, cursor 6, windsurf 2 — each with
the marker; cline/copilot/trae/zcode stage none and get none, so their contracts
are unchanged.

* fix(#2544): gate the #2717 marker writes on having staged something

The three dedicated marker writers #2717 added ran unconditionally. Each one
mkdirs hooks/ up front and stages its scripts conditionally on the source
existing, so with an absent or empty hook source they created a directory,
filled it with nothing, and marked it as GSD's anyway.

That is the same write-into-someone-else's-territory this issue is about, and
installSharedHooksBundle already guards the identical case with `stagedHooks`.
The dedicated paths now carry the matching gate:

  - cursor / windsurf: `installedScripts.size > 0`
  - codex: a new `codexStagedHooks` flag. The enclosing guard only proves that
    hooks/dist EXISTS; it says nothing about whether any CODEX_HOOKS_TO_COPY
    entry landed.

Covered for cursor and windsurf by driving each writer against a src tree whose
hooks/ dir is empty. The codex leg is defensive and deliberately uncovered: its
trigger state needs a package tree where hooks/dist exists but holds none of the
allowlist, which is not constructible from a real checkout.

* test(#2544): scope the commonjs-marker sources per root

The rule declared one flat source list for every marker root, so
`extensions/package.json` was attributed to runtime-hooks-surface.cts (which
never writes there) and `.kimi/hooks/package.json` to install-engine.cts.

That is not merely untidy. emitted-diff.cjs accepts the FIRST satisfied source,
so a flat list containing bin/install.js let any change anywhere in that
13k-line file authorise marker drift for every root — the blanket escape hatch
this file's own agents-verbatim comment refuses for exactly the same reason.

Sources are now derived per root from ctx.rel. Note the rule ctx is
`{ rel, runtime }` and carries no `root`, so keying on ctx.root would have sent
every path down one branch silently.

* test(#2544): state precisely what the zcode assertion pins

The comment claimed the test pinned installSharedHooksBundle's `stagedHooks`
gate. It does not, and neither did the windsurf version it replaced: zcode
declares skipSharedHooksInstall, so the outer guard skips that helper entirely
and the gate is never evaluated. The test passes on the runtime exclusion.

What it does pin — the outcome a pre-existing, GSD-untouched hooks/ stays
marker-free — is still worth having, and is what the review asked for. The two
`staging zero hook scripts` tests are the ones that pin a real staged-nothing
gate. Comment corrected rather than left implying coverage that is not there.

---------

Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-08-01 21:00:23 -04:00
Tom Boucher
ef7a71fc09 fix(#2754): make parseStateMd CRLF-safe — frontmatter no longer drops on Windows-authored STATE.md (#2865)
* test(#2754): parseStateMd must parse CRLF STATE.md identically to LF

The frontmatter fence regex and downstream splits used literal \n, so a CRLF
STATE.md dropped the ENTIRE frontmatter block. Assert CRLF/LF parity (the
production contract) across full frontmatter, next_phases flow + block forms,
the progress nested block, and null handling.

* fix(#2754): make parseStateMd CRLF-safe — frontmatter fence + splits use \r?\n

The fence regex, scalar-line split, next_phases block-list regex, and progress
block regex all used literal \n, so a CRLF (Windows-authored) STATE.md dropped
the ENTIRE frontmatter block — every statusline field was silently absent. Use
\r?\n throughout, mirroring the CRLF-safe extractFrontmatter in src/frontmatter.cts.
LF behavior unchanged.

* chore(#2754): changeset fragment

* test(#2754): pin parseStateMd↔extractFrontmatter parity (Generative-Fix Divergence guard)

The statusline parseStateMd and the canonical extractFrontmatter both derive GSD
state from STATE.md frontmatter and diverged once already (the CRLF bug this PR
fixes). Add a cross-parser parity assertion (CLAUDE.md parallel-surfaces rule)
over the overlapping fields, under both LF and CRLF, so a future divergence on a
scalar shape or line ending is caught here. (isolated-review minor finding)

* chore(#2754): backfill changeset PR number (2865)

---------

Co-authored-by: Test <test@example.com>
2026-07-30 14:34:28 -04:00
Tom Boucher
97e9fd50bd fix(#2752): make tool_input.path authoritative over model-controlled file_path in gsd-phase-boundary.sh (#2860)
* test(#2752): path is authoritative over model-controlled file_path in phase-boundary hook

Rewrite the #2304 precedence test (which pinned the buggy file_path-wins
behavior with an impossible no-tool_name {file_path,path} payload) to assert
the correct precedence with realistic Kimi-shaped payloads: a real .planning/
write with a decoy file_path must still fire the reminder (suppression repro),
and a write elsewhere with a decoy .planning/ file_path must NOT fabricate one
(fabrication repro). Update the parity vocabulary alarm to the new expression.

* fix(#2752): make tool_input.path authoritative over model-controlled file_path in gsd-phase-boundary.sh

The hook consulted file_path first, path second. kimi-cli executes on path and
sends path only; file_path on a Kimi payload is always model-supplied. So a
model-supplied decoy file_path could suppress the reminder for a real .planning/
write or fabricate one for a file never touched. Flip the precedence so path is
authoritative and file_path is the fallback (Claude Code emits file_path and no
path, so the fallback must remain). Mirrors the #2595 JS-guard fix.

* chore(#2752): changeset fragment

* chore(#2752): clarify comment/changeset — JS guards use upstream normalization, shell hook applies precedence directly (review minor 1)

* chore(#2752): backfill changeset PR number (2860)

---------

Co-authored-by: Test <test@example.com>
2026-07-30 12:32:00 -04:00
0xdhx
a8b40fa53f fix(#2547): fail closed on crashing and path-shadowing Kimi payloads (#2595)
* fix(#2547): fail closed on a malformed Kimi edit list in normalizeKimiPayload

`normalizeKimiPayload` rebuilt old_string/new_string with
`String(e.old ?? '')`. `??` guards the value, not the dereference, so a
nullish entry in a Kimi `edit` list threw a TypeError at the top of the
handler, before any tool dispatch. Each guard's outer
`catch { process.exit(0) }` swallowed that crash and emitted the same exit
code as "nothing to report" — turning a should-BLOCK call into a silent
allow.

Two hard blocks were bypassable:

  * gsd-worktree-path-guard's cross-git-root write block (#260) — a
    StrReplaceFile write whose path resolves to a different git root is
    correctly blocked with a well-formed edit list, and silently allowed
    with `edit: [null]`.
  * gsd-workflow-guard's force-add block on agent-* branches — a Shell
    payload carrying a spurious `edit: [null]` field walks past it. The
    Bash path never reads `edit`; the field only has to be present to
    trigger the crash.

Fixed with `e?.old` / `e?.new`, landed identically in all five copies so
tests/kimi-guard-normalization-parity.test.cjs's byte-identity assertion
still holds.

The crash boundary is nullish specifically, not "non-object": `('x').old`
and `(7).old` are legal reads yielding undefined, so string/number entries
never threw. Both are kept as controls proving the fix did not change
their behaviour.

Regression coverage is folded into the owning suites per CONTRIBUTING.md
(no new bug-* files). Negative-controlled: the nullish cases exit 0
against pre-fix guards and exit 2 after, with positive controls (the
equivalent well-formed payload blocks) and negative controls (in-worktree
writes and benign commands still pass) alongside.

Refs #2547

* test(#2547): exercise the production Kimi payload shape in read-guard tests

The `#2304: Kimi tool vocabulary engages the read guard` cases send
payloads with no `session_id`, and runHook injects none. A live Kimi turn
always carries one — kimi-cli's hooks/events.py `_base()` sets it
unconditionally, and soul/kimisoul.py calls `set_session_id()` at the top
of every turn before tool dispatch, so the ContextVar's `default=""` never
reaches a tool call.

gsd-read-guard treats any non-empty `data.session_id` as "Claude Code
already enforces read-before-edit, skip" (#2520). So the advisory those
tests assert fires only for a shape production never sends: the tests were
green, and the guard was dormant on Kimi. A sibling #2520 case in the same
file asserts the skip when `session_id` IS present — both passed, and the
production shape hits the skip.

Two changes, test-validity only:

  * Retitle the #2304 block to say what it proves — the tool VOCABULARY is
    normalized through to the Write/Edit branch — with a comment warning
    not to read it as production evidence.
  * Add a #2547 block asserting behaviour against the production shape
    (session_id populated), including a case that pins the delta directly:
    the same payload fires without session_id and is silent with it.

The #2547 block characterizes a known gap; it does not endorse it.
Redesigning how the guard discriminates runtimes is explicitly out of
scope for #2547. If a later change makes the advisory fire on Kimi these
tests are supposed to fail — update them then rather than dropping the
coverage.

Refs #2547

* docs(#2547): scope the Kimi guard-engagement claim to what Kimi enforces

#2518 engaged the guards' Kimi matchers and the release notes describe the
result as "All seven guard hooks now engage on Kimi", singling out the
prompt-injection read scanner as "the security-relevant guard" taken "from
silently dormant to engaged". That is not achievable for the scanner at
the emit layer.

gsd-read-injection-scanner.js is a PostToolUse hook, and kimi-cli's
dispatch never inspects PostToolUse hook results: src/kimi_cli/soul/
toolset.py awaits PreToolUse and honours `result.action == "block"`, but
fires PostToolUse via asyncio.create_task() and returns the ToolResult
without awaiting it — the done_callback only retrieves the task's own
exception. So no output shape the scanner emits can block or flag a Kimi
tool call, and `security.injection_blocking` cannot take effect there.
Reshaping the scanner's output would not change this; the enforcement gap
is in kimi-cli's PostToolUse handling, which is out of scope here.

This corrects the claim rather than the code — there is no gsd-core emit
fix that would make it true:

  * .changeset/2304-kimi-guard-tool-name.md — the fragment is unreleased,
    so it would otherwise ship this as a CHANGELOG security claim.
    Headline narrowed to "normalize Kimi's payload shape" and a scope
    paragraph added naming what actually blocks on Kimi (the two
    PreToolUse blocks) versus what cannot.
  * docs/migration/kimi-to-kimi-code.md — the scanner was listed under
    "Every GSD `PreToolUse` guard"; it is PostToolUse. Corrected, and the
    "What about the dormant guards?" section now splits enforceable from
    not-enforceable instead of saying Phase 0 "fixed all seven".
  * hooks/gsd-read-injection-scanner.js — the same scope note in the
    file's own Kimi rationale comment, where the next contributor to touch
    the normalization will actually read it. Comment only; the shared
    normalization block is untouched and byte-identity still holds.

Refs #2547

* chore(#2547): regenerate golden install-parity fixtures for the guard fix

The golden install-parity fixtures record a content hash per installed
file, so changing the five guard hooks changes their hashes across every
runtime's fixture. Regenerated with the full sweep (build, gen:golden,
size:baseline) rather than a single generator — running gen:golden alone
leaves tests/workflow-size-baseline.json stale and loses CI jobs to a
regeneration that looked complete.

The size baselines came out unchanged (no workflow or agent bodies
touched) and the hash delta is confined to exactly the five guards:
gsd-prompt-guard, gsd-read-guard, gsd-read-injection-scanner,
gsd-workflow-guard, gsd-worktree-path-guard.

Refs #2547

* fix(#2547): guard the String() coercion in normalizeKimiPayload too

Found by adversarial review of the first commit, then reproduced against
pristine next: `e?.old` closes the nullish dereference but leaves a second
route to the same crash-to-allow.

`{"toString": null}` is valid JSON, and coercing it throws
`TypeError: Cannot convert object to primitive value` — so an edit entry
that IS a well-formed object still crashes normalization, still lands in
the outer `catch { process.exit(0) }`, and still downgrades a should-BLOCK
call to a silent allow. Confirmed on both hard blocks:

  {"tool_name":"Shell","tool_input":{
     "command":"git add -f secret.env",
     "edit":[{"old":{"toString":null},"new":"x"}]}}      -> exit 0 (was)

  {"tool_name":"StrReplaceFile","tool_input":{
     "path":"<main-repo>/src/index.ts",
     "edit":[{"old":{"toString":null},"new":"x"}]}}      -> exit 0 (was)

Both exit 2 now.

The coercion is wrapped rather than replaced with a `typeof === 'string'`
test on purpose. Degrading only the non-coercible entry keeps
stringification identical for every value that CAN coerce — numbers,
arrays, plain objects — which matters because gsd-prompt-guard scans
new_string for injection patterns, and a `typeof` test would silently stop
scanning content that reaches that scan today (e.g. `new: ["ignore all
previous instructions"]` currently stringifies and is scanned). Verified:
zero behaviour change across string, number, bool, null, array-of-strings,
nested array, plain object and `__proto__`-keyed input; only the throwing
case changes, from crash to ''.

Regression cases are negative-controlled against the previous commit: the
four new coercion-trap tests fail with only the `e?.old` fix in place and
pass with this one.

Refs #2547

* chore(#2547): cover the String() coercion vector in the changeset

The release note described only the nullish-dereference route. Both routes
reach the same fail-open, so both belong in the changelog entry, along with
why the coercion is wrapped rather than type-tested.

Refs #2547

* chore(#2547): point the changeset fragment at the real PR number

The fragment has to exist before `gh pr create` runs, so it carried the
issue number as a placeholder. Corrected to 2595 now that the PR is open.

Refs #2547

* fix(#2547): make Kimi's `path` authoritative over a model-supplied `file_path`

normalizeKimiPayload copied Kimi's `path` into `file_path` only when
`file_path === undefined`, so any `file_path` the model chose to include won
outright. Every guard reads `file_path`; kimi-cli executes on `path`. The guard
therefore inspected one file while the write landed on another.

This bypass needs no crash. A payload pairing a cross-root `path` with a
spurious `file_path: ""` left gsd-worktree-path-guard reading an empty string
and exiting 0, while the identical write without the extra key blocked — the
same cross-root write the #260 block exists to catch. The shadowing also
preserved a non-string `file_path` (`[]`), which threw inside that guard's
path.isAbsolute() and reached its outer `catch { process.exit(0) }`: the same
crash-to-allow the rest of #2547 closes, reached through the guard's own read
rather than through normalization.

Reachability is not speculative. kimi-cli's soul/toolset.py json-parses the
model's raw tool arguments and passes that dict verbatim as tool_input to
PreToolUse, performing typed validation only later inside tool.call() — after
the hook has already decided. So the model controls extra keys in tool_input at
the moment the guard runs. kimi-cli's file tools carry no `file_path` field at
all (src/kimi_cli/tools/file/write.py, replace.py), so a `file_path` in a Kimi
payload is always model-supplied.

`path` now wins outright. Overwriting can only ever narrow what a guard inspects
to the path that will actually be written, so it cannot under-block.
Normalization returns early for non-Kimi tool names, so the native Claude Code
contract (file_path governs) is untouched.

Landed identically across all five inlined copies; the byte-identity assertion
in tests/kimi-guard-normalization-parity.test.cjs enforces that.

* test(#2547): cover the file_path-shadowing bypass in the #260 guard suite

Four cases, each exiting 0 (bypass) against the pre-fix guards: a spurious
empty-string file_path, an in-worktree decoy file_path, and non-string
file_path values (array and object) that additionally crashed
path.isAbsolute() into the outer catch.

Two controls that are not bypass cases and matter as much:

  - an in-worktree write carrying a cross-root DECOY file_path must still exit
    0. Pre-fix this blocked, because the decoy won; the guard now follows the
    path kimi-cli executes on in both directions, so the fix narrows what is
    inspected without over-blocking.

  - a native Claude Edit (no `path` field) must still block on file_path alone.
    normalizeKimiPayload returns early for non-Kimi tool names, and this pins
    that the non-Kimi contract did not move. It passes both pre- and post-fix
    by design.

Negative-controlled: run against the pre-fix hooks, the four bypass cases and
the decoy control fail, and the native-Claude control passes.

* test(#2547): back the totality claim with property tests over fc.anything()

This PR claims the fix "makes normalization total over the inputs JSON can
express" — a for-all guarantee — while the tests backing it are example-based,
each shape added reactively after a crash was found by hand (the String()
coercion trap was itself found by adversarial review after the first commit
shipped). Example-based tests cannot substantiate a for-all claim; they record
the counterexamples someone happened to think of.

Four properties over fc.anything(), which is exactly the JSON-expressible
domain the claim names:

  (a) totality over any tool_input
  (b) totality over any edit list — the crash surface both #2547 fixes targeted
  (c) `path` always wins over any model-supplied `file_path` (the review blocker
      invariant: a guard reading file_path can never be aimed at a file other
      than the one kimi-cli writes)
  (d) a non-Kimi tool_name passes through untouched — the native Claude contract

normalizeKimiPayload is inlined per hook with no runtime binding, so there is
nothing to require. The block is extracted from hook source and evaluated via
the SAME extraction contract kimi-guard-normalization-parity.test.cjs uses, so
a source edit that breaks one breaks both instead of silently testing a stale
block. An extraction floor test fails loudly if the extraction yields a no-op.

Non-vacuous, and checked rather than assumed: against pristine pre-#2547 `next`,
(a), (b) and (c) all FAIL and (d) passes. (a) needed the fix that makes it
meaningful — a bare fc.anything() for tool_input passed even against the live
defect, because arbitrary generation essentially never invents the `edit` key
the crash lives behind, so the generator is biased onto the keys normalization
actually reads and unioned back with unbiased input.

* chore(#2547): cover the shadowing vector in the changeset and regen goldens

Golden install-parity churn is hash-only, on exactly the five hook files this
round changed. gsd-phase-boundary.sh is deliberately unchanged.

* test(#2547): make the property test able to kill the coercion mutant

Review Major 1: the generative test added to stop the NEXT counterexample
could not kill the one it was written for. Reproduced the reviewer's matrix
independently — against the shipped generator, a mutant reverting `editText`
to the unguarded `String(v ?? '')` passed all four properties.

Cause, confirmed by measurement: the edit-array ENTRIES were bare
`fc.anything()`, which essentially never invents an `old`/`new` key, so
`e?.old` was always undefined and `String(undefined ?? '')` never coerced
anything. That is the same vacuity the file's own comment describes one level
up, reproduced one level down.

The review's prescribed fix — bias the entry onto `{old, new}` — is necessary
but NOT sufficient, and this is the part worth recording: measured over 20,000
draws, bare `fc.anything()` yields a non-coercible value 3 times (0.015%). At
`numRuns: 200` an `old` key holding a hostile value essentially never
co-occurs, and the mutant survives the entry bias too. Both levels need
biasing — the entry onto the keys normalization reads, and the VALUE onto the
shape that actually throws.

`{"toString": <non-function>}` is that shape and stays inside the
"JSON-expressible" domain the claim names (JSON.parse produces it verbatim);
`fc.anything({withNullPrototype: true})` would also kill the mutant but widens
the domain past what the PR asserts, so it is not used.

Verified: M1 now dies at every seed tried (1/7/42/99/4242/31337, failing
within 3-31 cases) while HEAD stays green at all of them.

Also closes three coverage gaps the review listed as nits — properties (e)
totality over any JSON value as the WHOLE payload, (f) the tool_output →
tool_response mapping (including that an existing tool_response is not
clobbered), and (g) an empty edit list reconstructing nothing.

Property (e) required a one-line fix in the normalizer itself: `JSON.parse
('null')` is null, and null/primitive payloads threw on the `data.tool_name`
read — falsifying the "total over the inputs JSON can express" claim. Harmless
in practice (the throw landed in the same fail-open catch as the exit 0 it now
takes deliberately), but the claim should be true as stated. Landed
byte-identically across all five copies.

Refs #2547

* fix(#2547): make old_string/new_string authoritative, not merely defaulted

Review Major 2: the shadowing class the prior round's BLOCKER closed for
`file_path` survived one field over. `old_string`/`new_string` were still
reconstructed only `if (input.<field> === undefined)`, so a model-supplied
value won.

The argument for making `path` authoritative applies verbatim here.
kimi-cli's StrReplaceFile schema is `path` + `edit` only
(src/kimi_cli/tools/file/replace.py @ 4a550ef) and carries no
`old_string`/`new_string` at all, so either key appearing in a Kimi payload is
always model-supplied — exactly like `file_path`.

Verified end-to-end against the reviewer's payload: a cross-root write
carrying `new_string: ""` alongside an injected `edit[].new` left
gsd-prompt-guard reading '' and returning at its `if (!content)` guard, so the
injection advisory never fired and the reconstructed content was never
scanned. `new_string: null` behaved identically. Negative-controlled: both
produce empty output against pre-fix source and fire the advisory after.

Chose unconditional reconstruction over the offered `typeof` alternative
deliberately. A type test closes `""`/`null` but leaves the interesting case
open — a benign NON-EMPTY decoy (`new_string: "chore: tidy"`) shadows just as
effectively and passes any type test. The new suite includes that case
specifically; it is what discriminates between the two candidate fixes.

Also pins the kimi-cli SHA in the authoritative-path comment, as requested —
it cited file names with no version while the issue pins 4a550ef.

Landed byte-identically across all five inlined copies; the parity test's
byte-identity assertion holds.

Refs #2547

* fix(#2547): close the non-string file_path crash-to-allow at every read site

Review Major 3: the crash-to-allow was closed only as a side effect of `path`
masking the bad value, while the changeset read as though it were closed
outright. Confirmed both of the review's reachability claims: `[]`/`{}`/`42`
are truthy, survive the `!rawFilePath` early-out, and throw inside
path.isAbsolute() into the outer `catch { process.exit(0) }`; and normalization
returns early for native Claude Code payloads (KIMI_TOOL_NAMES has no 'Edit'
entry), so `{"tool_name":"Edit","tool_input":{"file_path":[]}}` reached it
untouched — this guard's original #260 surface.

Reproduced on a real fixture: string cross-root path exits 2, the identical
payload with `[]` or `{}` exits 0.

Swept the class rather than the instance. Five more untyped read sites across
four other hooks, each one line from a type-strict or method-dependent call.
Census of what each can actually do:

  gsd-worktree-path-guard.js:173  BLOCKS  -> live bypass (the review's finding)
  gsd-prompt-guard.js:128         scanner -> silenced the injection scan, the
                                             same outcome as Major 2 by another
                                             route; verified empirically
  gsd-workflow-guard.js:206       advisory only (its exit-2 is the Bash
                                             force-add path, which reads
                                             `command`, not `file_path`)
  gsd-read-guard.js:141           advisory only
  gsd-read-injection-scanner.js:213  advisory only
  gsd-windsurf-pre-write.js:75    ALREADY TYPED — the shape adopted here

All six now read typed. The workflow-guard site keeps its truthiness fallback
(`(typeof x === 'string' && x) || ...`) because a bare type test would let an
empty `file_path` shortcut the `path` fallback.

Also declares one swept hit NOT fixed: `gsd-workflow-guard.js:175` reads
`command` untyped on a genuinely blocking path. Same shape, but not
exploitable — unlike file_path/path there is no second field carrying the
executable value, so a non-string command cannot smuggle a real `git add -f`
past the block. Left alone rather than widen this PR into the Bash path.

The regression gate is a SOURCE-level invariant, not a behavioural one, and
that is deliberate: the fixed read and the crashing read are black-box
identical — both end at exit 0, one via the catch and one via the early-out.
A test asserting exit 0 on a non-string payload passes against the unfixed
code, which is the same false-green the review flagged in the existing
`['non-string file_path (array)', []]` cases. Repeating it one level up would
be no better. tests/kimi-guard-typed-payload-reads.test.cjs fails if any hook
regresses to an untyped read (negative-controlled: it reports all five
pre-fix sites with correct file:line).

The behavioural cases requested — non-string file_path with NO `path` key —
are added to worktree-safety.test.cjs and labelled honestly as documenting the
explicit fail-open rather than detecting a revert.

Also states the relative-path premise (review Minor 5) at the early-out that
depends on it: "always safe" holds only while every runtime reaching there
resolves relative paths against the tool CWD. Claude Code satisfies it by
requiring absolute paths; kimi-cli's resolution behaviour is NOT verified here
and is recorded as an unverified premise rather than an asserted bypass.

Refs #2547

* docs(#2547): correct the changeset's closed-claim and fold the misattributed note

Review Major 3 also flagged the fragment: it said the non-string vector "threw
inside that guard's path.isAbsolute() ... `path` now wins outright", which
reads as closed when it was closed only conditionally. Rewritten to state what
is now true — closed unconditionally at all six read sites — and extended with
the Major 2 finding.

Review Minor 6 (the #2547 scope note living in a `pr: 2518` fragment) turns out
to understate the problem. Rendering the changelog and re-parsing it shows the
note is not merely misattributed — it is DROPPED. serializeChangelog emits each
fragment as a single `- ` bullet, and parseChangelog terminates a bullet at the
first non-continuation line, so everything after a blank line is lost on
re-parse. Audited all 44 fragments: exactly one was lossy —
2304-kimi-guard-tool-name.md, losing 656 of 1730 characters, i.e. precisely
that second paragraph. Folding it into this PR's fragment fixes the
attribution and the silent loss together; all 44 now round-trip losslessly.

That same mechanism is why the remaining nit — reformat this fragment's
~2,000-character paragraph for readability — is NOT applied. A paragraph break
or a bullet list would silently truncate the entry at the first blank line
(verified for both). The single-paragraph form is load-bearing under the
current serializer, not an authoring preference. Worth its own issue; noted in
the PR thread rather than worked around here.

Refs #2547

* chore(#2547): regenerate golden install parity after rebase onto next

Rebased onto `next` @ 9138271b (the PR had gone BEHIND by 20 commits; the
review's closing nit asked for it). The replay was CLEAN — no conflicts — and
that is exactly why this commit exists.

These fixtures are one key per installed file, so when the PR pins five hook
entries and the base rewrites others', the two edits land on different lines of
the same JSON. Git merges them silently and correctly AS TEXT while attesting
nothing about whether the merged hashes are still valid. Verified rather than
assumed: per-key equivalence against the old base showed the base had moved 22
of the 27 keys this PR pins in every runtime fixture, and
tests/golden-install-parity.test.cjs failed on 10 runtimes immediately after the
clean rebase. A push without this regen would have gone out red.

Regenerated with `npm run build && npm run gen:golden` under a throwaway
HOME/CLAUDE_CONFIG_DIR (the generators invoke the installer); live-profile
canary clean before and after.

Contamination check: every key differing from the base's committed fixture
resolves to a file this PR actually touches — the five guard hooks, under both
the `hooks/` and `.kimi/hooks/` install layouts, and nothing else. Derived from
the PR's changed-file set rather than a feature-name filter, which is what
would have mislabelled the registration surfaces.

Size baselines re-checked and NOT regenerated: this PR moves no workflow or
agent, and the base's own baselines are current (agent-size-budget,
workflow-size-budget, workflow-size, update-size-baseline all green).

Refs #2547

* chore(#2547): allowlist the field-shadowing security test in the injection scan

The new regression suite tripped the repo's own prompt-injection scan — a test
for the injection scanner setting off the injection scanner.

The fixture has to be a real injection phrase for the test to assert anything:
it is precisely the content gsd-prompt-guard must still scan once a
model-supplied `new_string` can no longer shadow the reconstructed
`edit[].new`. Weakening it to a benign string would make the suite vacuous.

Allowlisted rather than obfuscated, because that is this repo's established
convention for the class — tests/read-injection-scanner.security.test.cjs,
tests/security-prompt-injection.security.test.cjs,
tests/prompt-injection-scan.security.test.cjs and four others carry real
payloads as test DATA and are listed for exactly this reason. Splitting the
literal to dodge the grep would work but would make this one file inconsistent
with its five peers and leave the next reader wondering why.

Verified with the CI invocation itself (`scripts/prompt-injection-scan.sh
--diff upstream/next`): 26 files scanned, 0 findings. The .cjs codebase scan
does not cover tests/ and is unaffected (73 tests green).

Refs #2547

---------

Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-07-28 18:31:40 -04:00
Tom Boucher
c7c2fe3c2b fix(#2587): resolve cursor hook workspace from workspace_roots, not cwd (#2680)
* fix(#2587): resolve cursor hook workspace from workspace_roots, not cwd

gsd-cursor-session-start.js and gsd-cursor-stop.js both resolved the project as
path.join(process.cwd(), '.planning', 'STATE.md'). Under the cursor-agent CLI,
hooks are invoked with cwd set to the Cursor config dir (~/.cursor), not the
workspace — so the lookup always missed. sessionStart could only ever emit the
"no .planning/ workflow found" nudge and stop's verify-work reminder could never
fire, even with .planning/STATE.md sitting in the workspace. Slash commands were
unaffected, which is why only the hook layer looked blind.

Both hooks already buffered stdin into `raw` and never parsed it; the payload's
workspace_roots carries the real path.

Multi-root was left open in the report ("first root vs any root"). Resolved
forward: prefer the first root that actually carries .planning/STATE.md, so a
workspace whose GSD project is not the first root still resolves — strictly
better than first-root-only and identical to it in the single-root CLI case.
Falls back to roots[0], then to cwd, keeping IDE behavior unchanged if the IDE
ever invokes hooks from the workspace.

The resolver is duplicated verbatim across the two scripts rather than shared via
hooks/lib/: these hooks ship standalone, and a new hooks/lib/ file must be
registered in the GENERATED installer's GSD_HOOK_LIB_FILES allowlist — the
installer-omits-shipped-file class that yields MODULE_NOT_FOUND at runtime. Per
CLAUDE.md "Generative Fix Divergence", the duplication carries a parity assertion
so the copies cannot drift.

Failing-first, demonstrated by direct invocation with cwd != workspace:
  pre-fix  sessionStart -> "no .planning/ workflow found"   stop -> {}
  post-fix sessionStart -> ".planning/STATE.md is present"  stop -> reminder

tests/fix-2587-cursor-hook-workspace-roots.test.cjs spawns the real scripts as
child processes with a cwd lacking .planning/ and workspace_roots pointing at it.
Boundary coverage on the roots array (0 / 1 / 2 entries), plus malformed-JSON
fail-open, junk-entry filtering, the parity assertion, and a guard that neither
script resolves .planning from cwd again.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015TCwhbMuY37DzRMCfzTABJ

* fix(#2587): extend workspace_roots fix to subagentStart; keep cwd a candidate

Three findings from the isolated review, all fixed.

1. MISSED SITE (high). gsd-cursor-subagent-start.js carried the identical
   defect at line 43 — its own header documents workspace_roots in the input
   schema, but it resolved .planning/ from process.cwd() anyway. Under the
   cursor-agent CLI that meant every Cursor subagent (planner, executor,
   verifier) started with "no .planning/ workflow found" and no phase context.
   The report named only sessionStart and stop; the defect class was wider.
   Verified pre-fix vs post-fix by direct invocation with cwd != workspace.

2. SEMANTIC NARROWING (medium). The first cut searched only workspace_roots and
   fell back to cwd solely when the array was EMPTY. So when roots were supplied
   but none carried .planning/ while cwd did, the hook reported absent — where
   the pre-fix code, which always used cwd, reported present. That contradicted
   the fallback's own stated intent of preserving IDE behavior. cwd is now a
   CANDIDATE in the search (`[...roots, process.cwd()]`), so the fix is a strict
   superset of both the old behavior and the CLI fix, never a narrowing.

3. STALE GOLDEN FIXTURES (high, would have failed CI). The golden-install-parity
   fixtures store a content hash per installed file; these three hooks appear in
   13 of the 19 runtime fixtures. Regenerated via `npm run gen:golden` — the
   diff is exactly the three hook hashes in exactly those 13 runtimes.

Tests extended: subagentStart resolution via workspace_roots; the stop hook's
absent branch (previously only session-start's was covered); an explicit
regression guard that a project at cwd is still found when roots miss; parity now
asserts all THREE copies byte-identical; and the cwd guard sweeps the whole
RESOLVING_HOOKS list so a future hook in this family cannot be left on cwd.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015TCwhbMuY37DzRMCfzTABJ

* refactor(#2587): extract cursor workspace resolution to a shared hooks/lib module

The duplicate-plus-parity-test approach was the wrong call. The reported issue
named two hooks; a third (subagentStart) had the identical defect. That is the
signature of a systemic problem, and three copies of a resolver guarded by a
parity assertion is a divergence risk maintained by hand rather than a fix.

hooks/lib/cursor-workspace.js is now the single implementation. All three Cursor
hooks require it; none defines a local copy. Divergence is prevented
structurally instead of by asserting three copies stay byte-identical.

The reason duplication looked necessary was real, and is fixed properly here
rather than worked around: Cursor sets hostBehaviors.skipSharedHooksInstall
(#2089), so it never reaches the installer's bulk hooks/lib copy — it was the
ONE runtime shipping these hooks WITHOUT hooks/lib (verified against all 19
golden fixtures: cursor had the hook scripts, no lib). A naive require would
have thrown MODULE_NOT_FOUND at load, BEFORE each hook's own try/catch, wedging
every session on precisely the runtime this bug is about.

writeCursorHooksJson (src/runtime-hooks-surface.cts) now stages the hooks/lib
helpers the staged scripts actually require, discovered by scanning their
require('./lib/…') calls rather than a hardcoded name — so a future helper
cannot be silently omitted. This is narrower than flipping
skipSharedHooksInstall, which would wrongly pull in every shared hook.
cursor-workspace.js is also added to GSD_HOOK_LIB_FILES so uninstall and the
manifest manage it for the runtimes that do receive hooks/lib.

Verified against a REAL install (runMinimalInstall, cursor/global): the helper
is staged, and all three INSTALLED hooks resolve the workspace end-to-end from a
cwd that is not the project.

Also closes the review gap that the stop hook was excluded from the
cwd-candidate regression loop — it now sweeps RESOLVING_HOOKS. The byte-parity
test is replaced by a structural guard (every hook requires the shared module,
none redefines it) plus a new install test asserting the helper is staged and
the installed hook actually loads against it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015TCwhbMuY37DzRMCfzTABJ

* fix(#2587): fail loud on a missing hook lib source; drop unsubstituted version marker

Two findings from the installer-focused review.

H1 — the staging step's `if (!fs.existsSync(libSrc)) continue;` silently defeated
the very guarantee it was added for. Reproduced: delete hooks/lib/cursor-workspace.js
from source, run the cursor install — it exits 0, prints "Done!", and ships the
three hook scripts with an EMPTY hooks/lib/. The installed hook then throws
`Cannot find module './lib/cursor-workspace.js'` at load, before its own
try/catch, wedging every session — and nothing surfaces until a user hits it.
The scan protected against a required-but-UNLISTED helper while leaving
required-but-MISSING wide open (typo, bad rebase, an accidental delete).
It now throws: a missing helper source is a packaging bug and aborts the install.

M1 — hooks/lib/cursor-workspace.js carried a `gsd-hook-version: <placeholder>`
marker that NOTHING substitutes: copyLibDir stamps .sh files only, and
writeCursorHooksJson's staging applies just the colon-to-dash rewrite. Verified
the literal was reaching disk on both the bulk (--claude) and Cursor
(--cursor) paths. hooks/lib/git-cmd.js — the only pre-existing hooks/lib/*.js —
carries no such marker, so this was newly introduced, not inherited. Marker
removed, matching that precedent, with a note on why. (The explanatory comment
deliberately does not spell the token out, or it would reintroduce the literal.)

M2 — the require-scan regex demanded the exact compact form, so
`require( "./lib/x.js" )` would silently fail to stage its helper and compound
H1. Now tolerant of interior whitespace and either quote style.

Regression test added for H1 — the reviewer confirmed the invariant had zero
coverage repo-wide: a source tree carrying the hooks but no hooks/lib/ must make
writeCursorHooksJson throw rather than produce a broken install.

Re-verified end to end: the missing-source case throws, no unsubstituted literal
ships, and the installed hook still resolves the workspace from a foreign cwd.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015TCwhbMuY37DzRMCfzTABJ

* chore(#2587): backfill changeset pr number (#2680)

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-26 19:57:58 -04:00
Tom Boucher
77bf21b3a6 fix(#1995): widen worktree branch regex to accept agent-<id> namespace (#2548)
* test(#1995): regression test for agent-<id> branch namespace

Add failing-first tests proving that normalizeCleanupManifestEntry and
planWorktreeRecordAgent reject Claude Code's current agent-<id> isolation
branches (only worktree-agent-<id> is accepted). Boundary tests cover both
namespaces plus rejection cases.

* fix(#1995): widen worktree branch regex to accept agent-<id> namespace

Claude Code's isolation="worktree" branch naming changed from
worktree-agent-<id> to agent-<id>. Widen the regex in all 7 locations
from ^worktree-agent-[A-Za-z0-9._/-]+$ to ^(worktree-)?agent-[A-Za-z0-9._/-]+$
so both namespaces are accepted. Introduce a shared WORKTREE_AGENT_BRANCH_RE
constant in src/worktree-safety.cts to prevent future drift.

Closes #1995

* fix(#1995): update workflow guards, test assertions, and baselines

Widen the branch-check regex in execute-phase.md and execute-plan.md.
Update all test assertions that checked for ^worktree-agent- to expect
the widened ^(worktree-)?agent- pattern. Regenerate golden-install-parity
fixtures, agent-size-baseline, and workflow-size-baseline.

Closes #1995

* fix(#1995): update extractCwdGuardBash sanity check for widened regex

The e2e test's sanity check verified the extracted bash block contained
'worktree-agent-'. After widening to '(worktree-)?agent-', update the
check to match the new pattern.

* fix(#1995): widen missed workflow-guard branch check + changeset + lint fixes

- hooks/gsd-workflow-guard.js: widen startsWith('worktree-agent-') to
  /^(worktree-)?agent-/ regex — same defect class, was missed in prior commit
- tests/worktree.test.cjs: fix indentation regression from prior edit
- Add .changeset/1995-worktree-agent-branch-namespace.md (pr:0 placeholder)

Found by orthogonal code review (Step 4).

* fix(#1995): regenerate golden + size baselines for workflow-guard change

* docs(#1995): backfill changeset PR number (2548)
2026-07-23 07:36:53 -04:00
Tom Boucher
7e905aa137 feat(#2505): Phase 0 — Kimi PreToolUse guard vocabulary normalization (precondition; carries PR #2326 forward) (#2518)
* fix(#2304): normalize Kimi tool vocabulary in PreToolUse guard payload checks

The Kimi [[hooks]] registrations translate the matcher to Kimi's tool
vocabulary (WriteFile|StrReplaceFile) but the guard scripts early-exit
unless the payload's tool_name is a Claude name (Write/Edit/MultiEdit),
so every guard was dormant on Kimi: the matcher fired, the script saw
WriteFile, and exit(0)'d.

Normalize the payload's tool_name at the top of each guard
(WriteFile -> Write, StrReplaceFile -> Edit; bare or module-qualified
kimi_cli.tools.file:* forms) before the check. Inlined per guard rather
than a hooks/lib/ helper because hook scripts are staged as standalone
files on every hook surface, and a sibling require is a staging
dependency that can fail silently.

Regression tests pipe Kimi-vocabulary payloads at each guard and assert
it engages (typed fields: exit status, decision, hookSpecificOutput) —
verified red against the pre-fix scripts, green after.

* fix(#2304): normalize Kimi tool_input fields and route block reasons to stderr

Cross-AI review of the initial fix, verified against kimi-cli source,
found the tool_name normalization alone leaves the guards dormant on a
real Kimi runtime: kimi-cli forwards tool_input verbatim
(src/kimi_cli/hooks/events.py), and its tool schemas
(src/kimi_cli/tools/file/{write,replace}.py) use path/content and
edit.old/edit.new (single Edit or list) — not Claude's
file_path/old_string/new_string. The guards read file_path, got '',
and exited 0 past the now-open tool_name gate.

Extend the per-guard normalization to the payload fields
(path -> file_path, edit -> old_string/new_string with list flattening),
and write the worktree guard's block reason to stderr as well as the
stdout JSON — Kimi feeds stderr, not stdout, back to the model on
exit 2 (docs/en/customization/hooks.md exit-code table).

Regression tests rewritten to Kimi's actual payload shapes (plus an
edit-list case and a stderr-reason assertion) — verified red against
the name-only fix, green after.

* fix(#2304): join all edit[] entries into old_string, matching new_string

Review nit on #2326: old_string took only edits[0].old while new_string
joined the whole list. Symmetric join removes the latent trap for any
future consumer sizing before/after content (e.g. the #2255 write guard).

* fix(#2304): normalize Kimi ReadFile vocabulary in read-injection scanner

Review Major 2 on #2326: gsd-read-injection-scanner.js had the identical
dormancy — its Kimi matcher fires on 'ReadFile' but the SCANNED_TOOLS
check only knew 'Read', so injected content in read files was never
flagged on Kimi installs.

Folds the same inlined normalization block into the scanner and extends
the shared KIMI_TOOL_NAMES map with ReadFile:'Read' in all four copies so
they stay byte-identical. Harmless in the three write guards: a
normalized 'Read' falls out of their Write/Edit allowlist exactly as the
unmapped name did. Field mapping verified against kimi-cli upstream
(src/kimi_cli/tools/file/read.py Params.path); the existing
path->file_path copy covers the scanner's file_path read.

* test(#2304): parity test binding the four inlined Kimi normalization copies

Review Major 1 on #2326: KIMI_TOOL_NAMES + normalizeKimiPayload is
deliberately inlined in four hook scripts (staging-dependency rationale,
unchanged), with the inverse table in bin/install.js — five
hand-maintained surfaces and nothing binding them.

Static binding, zero runtime coupling:
- the four inlined blocks must be byte-identical;
- each guard-map entry must be the value-inverse of
  convertKimiToolName() for its Claude name;
- every guard-relevant Claude tool (Write/Edit/MultiEdit/Read) must have
  a reverse entry — a vocabulary rename or extension that updates the
  installer without updating the guards now fails in CI instead of
  leaving a guard silently dormant (the #2304 recurrence door).

Negative-controlled: diverging one copy or dropping a map entry fails
the suite against the fixed code.

* test(#2304): regenerate golden parity fixtures for guard hook changes

CI red on #2326: all 10 golden-parity failures were the staged guard
hooks drifting from their fixtures. Regenerated with npm run gen:golden
(after npm run build) under throwaway HOME/CLAUDE_CONFIG_DIR; diff
verified to change exactly the four PR-touched guard entries per
surface, nothing else.

* test(#2304): regression tests for Kimi ReadFile engaging the scanner

Mirrors the per-guard Kimi vocabulary tests the PR added for the three
write guards: bare and module-qualified ReadFile produce the advisory,
path exclusions still apply post-normalization, unknown Kimi names stay
fail-open. Negative-controlled against the pre-fold scanner (the two
positive cases fail there; exclusion/fall-through correctly pass on
both sides).

* fix(#2304): normalize Kimi Shell vocabulary in workflow guard

Withdraws the disclosed out-of-scope split: verification showed the
Bash->Shell case needs NO different mapping — kimi-cli's Shell.Params
names its field `command` (src/kimi_cli/tools/shell/__init__.py), same
as Claude's Bash — and the guard's write branch (Write/Edit/MultiEdit
allowlist) was ALSO dormant on Kimi under its Shell|WriteFile|
StrReplaceFile matcher. Same defect class as the other four hooks.

Folds the identical inlined block into gsd-workflow-guard.js and
extends the shared map with Shell:'Bash' in all five copies (harmless
outside the workflow guard: a normalized Bash falls out of the other
guards' checks as before). Parity test now binds five copies and adds
Bash to the dormancy alarm. New workflow-guard test file exercises the
observable block (force-add on a worktree-agent branch): Shell bare and
module-qualified block with WORKTREE_AGENT_FORCE_ADD_FORBIDDEN, benign
Shell passes, Claude Bash unchanged — negative-controlled against the
pre-fold guard (the two Kimi cases fail there). Golden parity fixtures
regenerated; diff verified to change exactly the five guard entries per
surface.

* fix(#2304): map Kimi tool_output and route workflow-guard block to stderr

Third-party review (cross-AI verifier) caught two gaps in the revision:

1. Kimi PostToolUse events carry `tool_output`, not `tool_response`
   (kimi-cli src/kimi_cli/hooks/events.py post_tool_use()), so the
   read-injection scanner — which reads data.tool_response — was STILL
   dormant on real Kimi payloads; the earlier tests passed because they
   sent Claude-shaped payloads. The shared normalization block now maps
   tool_output -> tool_response (inert in PreToolUse guards, where the
   field is absent), and the scanner's Kimi tests send the real shape.

2. The workflow guard's force-add block wrote its reason to stdout only.
   Kimi's exit-2 protocol feeds stderr back to the model — the exact
   fix this PR already applied to the other blocking guard — so the
   newly-awakened block would have been a silent denial. Reason now
   also routed to stderr, asserted in the test.

Also: the scanner's "unknown name" test now uses a genuinely unmapped
name (FetchURL) — Shell stopped qualifying when it entered the map —
and the workflow guard's write branch (WriteFile advisory,
StrReplaceFile .planning pass) gains behavioral coverage. All five
copies stay byte-identical (parity test green); golden fixtures
regenerated, diff verified to the five guard entries per surface.
Negative-controlled: 3 new assertions fail against the pre-fix hooks.

* docs(#2304): update changeset to cover the full five-guard fix

Review round 2 (2026-07-18) flagged the changeset as stale: it was
written for the first commit and still described only the three guards
named in the issue. The shipped diff grew to five guards plus two
payload dimensions the original body never mentioned. The body now
names gsd-read-injection-scanner and gsd-workflow-guard, the ReadFile
and Shell vocabulary entries, the tool_output -> tool_response mapping,
and the workflow guard's stderr block-reason routing.

* test(#2304): regenerate kilo golden fixture after #2305 landed on next

The branch's fixture sweep predates 50efae13 (fix(#2305), PR #2327),
which made Kilo ship the five shared guard hooks. Rebased onto next and
re-ran the full generator sweep (gen:golden, size:baseline, and the
four registry/contract generators); the only delta across all of them
is kilo.json's five guard-hook hashes, matching this PR's hook edits.

* fix(#2304): fold Kimi normalization into the two shell hooks

The 2026-07-19 review found the last two guards with the #2304 dormancy:

- hooks/gsd-graphify-update.sh gated on tool_name == "Bash" but is
  registered on Kimi with matcher 'Shell' — Gate 1 never matched and the
  auto-rebuild was silently dormant. kimi-cli's Shell.Params names its
  field `command` (src/kimi_cli/tools/shell/__init__.py), same as Claude
  Bash, so only the name needs mapping: strip the module-path prefix,
  map Shell -> Bash.
- hooks/gsd-phase-boundary.sh read only tool_input.file_path, but Kimi's
  file tools name the field `path` (src/kimi_cli/tools/file/write.py +
  replace.py) — the hook read '' and .planning/ writes went undetected.
  Falls back to tool_input.path when file_path is absent, mirroring
  normalizeKimiPayload's precedence in the JS guards.

The normalization is reimplemented in shell — a byte-identity assertion
cannot span the JS<->shell boundary, so the parity test gains a
shell-guard vocabulary block that pins both scripts' mapping facts to
convertKimiToolName's live vocabulary instead of faking a byte binding.
Behavior is covered by negative-controlled tests beside each hook's
existing suite (verified red against the pre-fix scripts): Kimi Shell
dispatch (bare + module-qualified) with a WriteFile negative control in
graphify-auto-update.slow.test.cjs, and Kimi path detection, file_path
precedence, and a non-.planning negative control in hooks-opt-in.test.cjs.

Changeset updated to name all seven guards; golden install-parity
fixtures regenerated (diff is exactly the two hook entries per runtime;
size baselines unchanged).

* fix(#2304): use a Map for KIMI_TOOL_NAMES so prototype keys cannot pass the guard fall-through

A bare bracket lookup on an object literal resolves 'constructor',
'__proto__', 'toString', 'valueOf' and 'hasOwnProperty' through
Object.prototype to truthy functions/objects, so `if (!mapped)` failed
to short-circuit and data.tool_name was assigned a non-string. Map.get
returns undefined for those keys — the same shape the repo already uses
in canonicalizeRuntimeName (src/runtime-name-policy.cts). Applied
identically to all five inlined copies (review M1, PR #2326).

No new bypass class: unrecognized strings already fail open by design;
this fixes the lookup being wrong, not the posture.

* test(#2304): enumerate normalized guards by scanning hooks/, not a hardcoded list

The parity test's file list was a literal five-entry array — a sixth guard
with its own copy-pasted normalization block would be silently uncovered,
the exact divergence mode the test exists to prevent (review M2). Now the
list is a scan of hooks/*.js for the KIMI_TOOL_NAMES marker, with a floor
assertion so a scan that finds nothing fails instead of passing vacuously.
Also parses the Map declaration introduced by the M1 fix, and carries the
allow-test-rule annotation documenting the source-text scanning (review m4).

* test(#2304): parse hook JSON output instead of substring-matching raw stdout

workflow-guard.test.cjs asserted on unparsed stdout while read-guard.test.cjs
in the same PR parses the JSON envelope first — match the better pattern at
all four assertion sites (review m5).

* test(#2304): regenerate golden parity fixtures after Map conversion in the five guards

* docs(#2304): reset changeset pr:0 placeholder for Phase 0 PR (#2507)

The closed PR #2326's changeset carried pr:2326. Phase 0 of epic #2505
re-lands this fix on a fresh branch; the pr: field will be backfilled
to the real Phase 0 PR number immediately after gh pr create returns.

* docs(changeset): backfill PR #2518 for Phase 0 (#2507)

---------

Co-authored-by: 0xdhx <darkhawkx@gmail.com>
2026-07-21 23:42:02 -04:00
Tom Boucher
5ea3401d4f fix(#2289): context-monitor emits injection envelope only for supported events (#2324)
* fix(#2289): context-monitor emits injection envelope only for supported events

gsd-context-monitor is wired to Codex Stop/SubagentStart/SubagentStop/PreCompact
(#772), but it emitted a hookSpecificOutput.additionalContext envelope for every
event. Codex's Stop schema rejects that shape ("hook returned invalid stop hook
JSON output") exactly when context is low.

Use a positive allowlist: emit only for context-injection events (PostToolUse,
AfterTool, and the pre-existing Gemini missing-name fallback); exit 0 silently
for Stop and every other event. Debounce and critical-session bookkeeping still
run on silenced events. Behavioral regression tests drive the real hook.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* docs(#2289): backfill PR number 2324 into changeset

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* test(#2285): de-flake per-plan use_worktree property test on duplicate briefs

The fast-check property in claude-orchestration.test.cjs located each plan's
agent() call via indexOf on the brief, but only plan IDs were unique — briefs
could collide (fast-check shrinks toward short strings). On a colliding seed the
lookup found the first duplicate's line and misattributed its isolation, failing
"use_worktree:true must carry isolation" intermittently (surfaced on macOS CI).
emitWorkflowScript is correct for duplicate briefs (verified); suffix the unique
id onto each agent() label so the test probe is unambiguous.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-16 00:56:07 -04:00
Cody Anderson
20ff405cb3 feat(#2162): opt-in compact GSD-state format for the statusline (#2175)
* feat(#2162): opt-in compact GSD-state format for the statusline

New statusline.state_format config, enum full|compact (default full —
existing rendering untouched). "compact" renders the state segment as
"<version> · P<phase>/<total> · <status>", e.g. "v1.12 · P7/12 ·
executing" — dropping the milestone name and progress bar (the two
biggest width costs) and collapsing narrative statuses to a single
keyword. Per the #2162 approval conditions, the keyword set is the
canonical vocabulary from normalizeStateStatus() in state-document.cjs
(discussing/planning/executing/verifying/completed/paused) — no
parallel hand-rolled list, so the vocabularies can't drift — and the
canonical stuck state "paused" renders uppercase as PAUSED (no new
"blocked" lifecycle state). Statuses the normalizer passes through
unrecognized fall back to their first word capped at 16 chars.
Lifecycle scenes preserved: active_phase wins over the body phase
number, milestone completion renders "complete", idle-with-next-action
renders "next <action> <phases>".

Claude-Session: https://claude.ai/code/session_01Hme55Pvq6BhpgwBcyC5HAg

* docs(#2162): changeset fragment for PR #2175

* fix(#2162): review fixes — ENUM_KEYS coverage, cap boundary tests, changeset format

- register statusline.state_format in the fix-1628 coercion-bypass matrix
- 15/16/17-char boundary tests for the shortGsdStatus fallback cap
- changeset body ends with the (#2162) citation per house convention

Claude-Session: https://claude.ai/code/session_01Hme55Pvq6BhpgwBcyC5HAg

* fix(#2162): round-2 review fixes — scene exclusivity, direct config-set coverage

- compact renderer gates the milestone-complete scene behind the absence of
  an in-flight phase id, mirroring formatGsdState's if/else precedence
  (Scene 1 beats Scene 3); regression test covers the non-atomic
  active_phase + percent=100 STATE.md shape
- direct config-set accept/reject test for statusline.state_format plain
  strings (ENUM_KEYS matrix covers only the JSON coercion shapes)

Claude-Session: https://claude.ai/code/session_01Hme55Pvq6BhpgwBcyC5HAg

* test: regenerate golden-install-parity fixtures for the statusline hook change

Claude-Session: https://claude.ai/code/session_01Hme55Pvq6BhpgwBcyC5HAg

* fix(#2162): complete-scene gate matches formatGsdState exactly (+property tests)

Re-review Major: gating done on !phaseId held completion back for the
legacy phaseNum shape — formatGsdState reaches Scene 3 on percent=100
regardless of phaseNum, so compact must too. Gate is now !s.activePhase.
The phaseNum-only test now expects 'complete' and cross-checks the full
renderer; a parity test feeds identical inputs to both renderers.
Re-review Minor: shortGsdStatus gets fast-check property coverage
(totality, canonical fixed points, separator safety, fallback shape).
Golden fixtures regenerated for the hook byte change.

Claude-Session: https://claude.ai/code/session_01Hme55Pvq6BhpgwBcyC5HAg
2026-07-14 21:09:24 -04:00
Cody Anderson
eec9efc351 feat(#2160): collapse verbose '(1M context)' model suffix to compact (1M) badge (#2173)
* feat(#2160): collapse verbose '(1M context)' model suffix to compact (1M) badge

Claude Code appends " (1M context)" to the model display name in
long-context sessions, eating 12 characters of statusline width. Collapse
it to " (1M)" — the signal stays, the width doesn't. Any other display
name passes through unchanged.

Claude-Session: https://claude.ai/code/session_01Hme55Pvq6BhpgwBcyC5HAg

* docs(#2160): changeset fragment for PR #2173

* fix(#2160): review fixes — ctx variant, boundary test, changeset format

- broaden the suffix match with a context|ctx alternation (approval-condition
  variant the regex missed)
- pin non-context parentheticals ((beta), (deprecated)) as untouched
- changeset body ends with the (#2160) citation per house convention

Claude-Session: https://claude.ai/code/session_01Hme55Pvq6BhpgwBcyC5HAg

* test: regenerate golden-install-parity fixtures for the statusline hook change

Claude-Session: https://claude.ai/code/session_01Hme55Pvq6BhpgwBcyC5HAg

---------

Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-07-14 20:37:43 -04:00
Cody Anderson
85a30d7036 fix(#2163): set windowsHide on the git status spawn
The windows-robustness guard (bug #685) requires every external-binary
spawn to set windowsHide:true so no console window flashes on Windows.
Golden fixtures regenerated for the hook byte change.

Claude-Session: https://claude.ai/code/session_01Hme55Pvq6BhpgwBcyC5HAg
2026-07-13 12:19:20 -06:00
Cody Anderson
73039d3717 fix(#2163): round-2 review fixes — deterministic fail-soft injection tests
- readGitStatus calls execFileSync via the child_process namespace so tests
  can inject spawn failures through the shared module object
- two deterministic tests: ERR_CHILD_PROCESS_STDOUT_MAXBUFFER-shaped and
  ETIMEDOUT-shaped throws both degrade to null (segment absent), proving
  the fail-soft paths the PR previously only asserted

Claude-Session: https://claude.ai/code/session_01Hme55Pvq6BhpgwBcyC5HAg
2026-07-13 11:33:43 -06:00
Cody Anderson
7a6564ed8a fix(#2163): review fixes — changeset format, explicit maxBuffer, hoisted require
- changeset reformatted to the bold-lead + (#2163) house convention
- explicit 8 MiB maxBuffer on the git spawn (default 1 MiB could overflow on
  huge dirty repos; overflow still degrades to segment-absent)
- child_process require hoisted to module level per file style

Claude-Session: https://claude.ai/code/session_01Hme55Pvq6BhpgwBcyC5HAg
2026-07-13 11:33:32 -06:00
Cody Anderson
d6672ff926 feat(#2163): opt-in git branch/status segment in the statusline
New statusline.show_git config (default false). When enabled, a git
segment renders after the directory: current branch plus compact
work-state markers (+staged ~unstaged ?untracked ↑ahead ↓behind, or ✓
when clean and in sync), e.g. " │ main+2~1?3".

One git status --porcelain=v2 --branch spawn per render via execFileSync
with a fixed argument array (no shell), a 1.5s timeout, and the
workspace dir passed with -C. Fails silently — segment absent outside a
repo, without git, or on timeout. Default output is unchanged when the
flag is absent.

Claude-Session: https://claude.ai/code/session_01Hme55Pvq6BhpgwBcyC5HAg
2026-07-13 11:33:32 -06:00
Cody Anderson
ad7111e50b feat(#2161): opt-in absolute token count on the statusline context meter (#2174)
* feat(#2161): opt-in absolute token count on the statusline context meter

New statusline.show_context_tokens config (default false). When enabled,
the context meter shows the absolute token total after the percentage,
e.g. "████░░░░░░ 46% (156k)" — summing input, cache-creation, cache-read,
and output tokens from context_window.current_usage (matching /context).

Default output is byte-for-byte unchanged when the flag is absent or
false. The .planning config is now read once per render and shared with
the last-command/position block instead of being re-read.

Claude-Session: https://claude.ai/code/session_01Hme55Pvq6BhpgwBcyC5HAg

* docs(#2161): changeset fragment for PR #2174

* fix(#2161): review fixes — k-to-M threshold, boundary tests, changeset format

- formatTokens promotes to the M branch when k-rounding reaches 1000
  (999,500-999,999 rendered "1000k" instead of "1.0M")
- boundary tests at 999499/999500/999999/1000000/1000001
- Number() guards on the four usage fields (silent string-concat gap)
- changeset body ends with the (#2161) citation per house convention

Claude-Session: https://claude.ai/code/session_01Hme55Pvq6BhpgwBcyC5HAg

* fix(#2161): round-2 review fixes — config-set coverage, precision claim, exports style

- config-set accept/reject tests for statusline.show_context_tokens
  (mirrors the post-planning-gaps precedent the issue scope names)
- changeset + docs no longer claim parity with /context: the suffix sums
  four fields while the meter %% derives from used_percentage (three), so
  the figures can diverge slightly
- module.exports one entry per line

Claude-Session: https://claude.ai/code/session_01Hme55Pvq6BhpgwBcyC5HAg

* test: regenerate golden-install-parity fixtures for the statusline hook change

Claude-Session: https://claude.ai/code/session_01Hme55Pvq6BhpgwBcyC5HAg

---------

Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-07-13 13:25:47 -04:00
Tom Boucher
bd613566cb feat(#2100): drive Windsurf through the EoS descriptor + wire Cascade's blocking hook bus (ADR-1239)
Fold all 10 residual isWindsurf branches in bin/install.js onto descriptor-driven
hostBehaviors (byte-parity — no fold changes any install output):
- 2 dead destructures dropped (uninstall, finishInstall); the dead
  `else if (isWindsurf)` legacy agent-loop arm removed (windsurf ∈
  _DESCRIPTOR_AGENTS_RUNTIMES → unreachable).
- skipSharedHooksInstall:true folds the two `!isWindsurf` shared-hooks exclusions.
- legacyDevinSkillsCleanup:true folds the `.devin`→`.windsurf` one-time cleanup gate.
- installsCommandBodiesForWorkflowDelegation:true folds the #1629 command-body copy
  (workflow-delegation target — load-bearing; local-install verified intact).
- verificationStyle:"windsurf-workflows" folds the workflow-count report.
- Corrected stale _LEGACY_SCAN_SUBDIR_NAMES + hooks-json manifest comments (cursor + windsurf).
Zero live runtime==='windsurf'/isWindsurf branches remain across bin/install.js,
install-engine.cts, surface.cts, runtime-artifact-conversion.cts (AC2 guard scans all four).

UPGRADE (Cascade hook bus): wire GSD's write/command safety guards into Windsurf's
native hook bus. New hooksSurface 'windsurf-hooks-json' (VALID_HOOKS_SURFACES 7→8, GATE A
profile-marker-only allowlist, the HooksSurface union) + writeWindsurfHooksJson
(Cursor-templated, Cascade's flat {hooks:{<event>:[{command}]}} shape) writing
.windsurf/hooks.json with two BLOCKING pre-hooks:
- pre_write_code → gsd-windsurf-pre-write.js: blocks writes to a file outside the
  active git worktree / into .git internals.
- pre_run_command → gsd-windsurf-pre-command.js: conservative destructive-command
  deny-list (rm -rf of root/home incl. sudo/env/path-prefixed forms; fork bombs;
  force-push refspec forms — HEAD:main, +main, --force/-f — to main/master/next).
Both use Cascade's protocol (stdin JSON, exit 2 + stderr to block, exit 0 to allow,
fail-open on error/timeout). Tokenize-based classifier (no catastrophic-backtracking regex;
4096-char cap) with the fail-closed false-positives fixed post-review.

The 4 advisory GSD guards + pre_mcp_tool_use + 5 post_* logging events are deliberately
NOT wired: Cascade has no context-injection channel for advisory hooks and GSD has no MCP
guard — porting them would be non-functional padding (documented; codebuddy #2098 / copilot
#2099 faithful-subset precedent). extendedHookEvents stays [].

Golden: the 2 guard scripts ship in the shared hook bundle (HOOKS_TO_COPY + the shared
managed-hooks-registry), exactly like cursor's 6 gsd-cursor-*.js scripts — so the 8
shared-bundle runtimes' fixtures gain the 2 inert windsurf scripts + the registry hash
(functionally inert for non-windsurf; the established cursor pattern). No install-output
change beyond that (the folds are byte-parity; skip-bundle runtimes untouched). New scripts
registered in managed-hooks-registry + build-hooks + INVENTORY. Tests: declarative-reference-
windsurf (adapter/axes/fail-closed + AC2 guard) + windsurf-hooks-bridge (live exit-2 blocking
+ allow/fail-open + ReDoS-bound + writer/reconcile/remove idempotency); VALID_HOOKS_SURFACES
pin updated to 8. Matrix hookBus delta + changeset (Changed). capability-registry regenerated.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-11 16:04:24 -04:00
Tom Boucher
c25b212c62 revert: restore gsd-cursor-pre-tool.js dead imports (golden parity)
Reverts the LOW-severity dead-import removal (require('fs')/require('path'))
that changed the file hash and broke 9 golden-install-parity fixtures. The
golden test computes per-runtime hashes of installed hook files; regenerating
all 9 fixtures for a cosmetic cleanup is disproportionate. Dead imports are
harmless (Node caches built-in requires) — noted as a follow-up nit.
2026-07-09 13:39:24 -04:00
Tom Boucher
45f3a2a5f9 fix(#2089): wire adapter into install path + address all review findings
MEDIUM fixes (code review):
- Wire resolveManagedHookEvents + resolveHookScripts + buildHookBusEntries
  from imperative-hook-bus.cts into writeCursorHooksJson — the install path
  is now truly descriptor-driven (reads hostBehaviors.managedHookEvents),
  not a hardcoded constant that happens to match the descriptor. bin/install.js
  passes the descriptor list via opts.managedHookEvents.
- buildHookBusEntries is now consumed (was dead code); entry-building is no
  longer duplicated inline.
- Remove try/finally from cursor-hook-bus-upgrade.test.cjs test bodies
  (violated CONTRIBUTING.md L342; redundant with t.after cleanup).

LOW fixes:
- Remove dead require('fs')/require('path') from gsd-cursor-pre-tool.js
- Fix resolveManagedHookEvents docstring (all-invalid fallback behavior)
- Add src/runtime-hooks-surface.cts to the AC2 source-guard file list

Security review: no CRITICAL/HIGH/MEDIUM findings (3 LOW are pre-existing
#777 baseline patterns, not regressions).
2026-07-09 13:17:04 -04:00
Tom Boucher
24896ddac7 fix(#2089): register 4 new cursor hook scripts in build + managed-hooks whitelists 2026-07-09 00:58:09 -04:00
Tom Boucher
b0d985ccb3 feat(#2089): migrate cursor onto imperative adapter + hook-bus/dispatch upgrades 2026-07-09 00:21:39 -04:00