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7 Commits

Author SHA1 Message Date
Tom Boucher
107eb8c1d9 feat(#3753): run docs guards on the PR that changes the docs they read (#3787)
A PR whose diff is entirely under docs/ runs zero tests, so a guard whose INPUT
is shipped prose cannot protect the PR lane of the diffs it exists to check. Its
only firing opportunity is after merge, on the shared branch -- which is how next
went red on dacae9273 while the PR that caused it (#3746) was green on every
check.

The docs-lint job in .github/workflows/docs-required.yml -- an ALREADY-REQUIRED
context -- now selects and runs the docs guards that read the specific docs files
the PR changed.

  scripts/docs-guard-registry.cjs    test file -> the docs paths it reads (63)
  scripts/select-docs-guards.cjs     pure (changedPaths, registry) -> test files
  scripts/lint-docs-guard-registration.cjs   drift guard, wired into lint:ci

scripts/ci-test-scope.cjs is NOT touched -- `git diff origin/next --` on it is
empty -- so #764's saving stands and its 21 pinning tests are untouched.

Selection: exact path; trailing-slash directory prefix (boundary-checked --
docs/adrenaline.md does NOT match docs/adr/, which a naive startsWith gets
wrong); and '*' for the 6 entries that walk docs/ generally or read a computed
path. Unknown maps to '*' -- guessing narrow is how a guard silently stops
running. Measured: a typo fix selects 6 of 63; docs/AGENTS.md selects 12;
docs/COMMANDS.md selects 18.

Four things this got wrong first, each found by an independent reviewer or by
probe, and each having been asserted safe in a comment:

1. The registry started as a RULE in ci-test-scope.cjs's RULES, on the theory
   that classify()'s !codeChanged normalization made it inert. True for
   docs-ONLY diffs; false for MIXED docs+code diffs, where codeChanged is true
   and the normalization never runs:

     node scripts/ci-test-scope.cjs --files "docs/a.md src/semver.cts"
       with the RULE:  25 targeted_tests
       origin/next:     3 targeted_tests

   Category error: RULES is the scoped lane's input; a docs-guard registry is a
   lane manifest for a consumer that never calls classify(). Extracted; pinned
   by value.

2. The second attempt was a dedicated workflow with paths: [docs/**]. Such a
   workflow never reports on a non-docs PR, so it can never be a required
   context without hanging every non-docs PR -- and a non-required check does not
   block a merge, so the guard would have been advisory and #3753 unfixed.
   docs-required.yml already has no paths: filter, already supplies the required
   docs-lint context, already computes docs_changed, and already ran one docs
   guard gated on it. Generalizing that step needs no ruleset edit at all.

3. The registry and the drift lint were built from ONE path-segment heuristic, so
   both were blind identically -- and blind at the guard that motivated the issue.
   The reader-call regex required a character BEFORE its keyword, so a callee
   named exactly read( / load( / parse( / doc( / file( / content( could never
   match; and only an INLINE path.join(ROOT,'docs','X.md') argument was caught,
   missing the two-step-via-variable form -- the MAJORITY spelling -- plus
   template literals and concatenation. Detector 1 fired on 14 of ~450 files, so
   35 genuine guards sat unregistered while the lint reported 0 violations,
   including cursor-reviewer (reads docs/COMMANDS.md, asserts
   .includes('--cursor')) and inventory-headings-countfree. The "accepted blind
   spot" this shipped with was the common case, not a fringe.

4. With detection fixed the true population is 115 files: 63 genuine guards, 52
   incidental. Running all 63 in a REQUIRED check on a one-line typo fix is the
   cost #764 exists to avoid -- install.test.cjs is 7840 lines and reads exactly
   one docs file, docs/AGENTS.md, for its frontmatter. Dropping it reproduces the
   bug; running it for a typo elsewhere is waste. Hence the map.

Then a second review round found six more, all fixed here:

- fragment-single-edit-propagation.install.test.cjs was EXEMPTED as
  "overlay fixture only". False: it reads the real docs/registries/eos.json and
  asserts on a registry entry name, and reads the real ADR-0001 and asserts its
  H1. A docs-only PR touching either would have gone green and red next -- #3753
  shipping again, from inside the fix for it. Now registered against both paths,
  and all 52 remaining exemptions were re-audited one by one.
- The SUITES-collision guard compared RAW registry keys, but run-tests.cjs strips
  a leading `tests/` BEFORE its suite check. So it caught 'all' and missed
  'tests/all' -- the only spelling that can actually occur, since every key
  carries the prefix. One typo would have run all 824 test files inside the
  required job. Now normalized the same way run-tests.cjs normalizes.
- The lint failed OPEN on an unreadable tests dir or candidate file: 0 violations,
  ok:true. A guard that cannot read its input must never report success.
- The exemption ratchet gated identity only, so a baselined file that later
  STARTED asserting on shipped docs stayed exempt silently -- 52 permanently blind
  files. The baseline now fingerprints the docs paths each exempted file
  references and fails when that set changes, naming what changed.
- The exemption marker was still honored inside a multi-line template literal in
  the header window. The scanner now tracks template-literal and block-comment
  state.
- `git diff --name-only | grep '^docs/'` silently dropped C-quoted non-ASCII docs
  paths, making docs_changed=false a green zero-guard check. Both call sites now
  pass -c core.quotepath=false.
- The run step was gated on hashFiles(), which a force-committed
  .docs-guard-tests.txt would satisfy. The step now rm -f's both scratch files
  first and gates on an output it sets itself.

Three empty states, deliberately distinct, because conflating them rebuilds
#3753: an empty or malformed registry HARD-FAILS; docs changed with no guard
covering them logs and skips; no docs change is already gated. The middle state
must never be expressed as an empty --files-from, which prints `no tests in suite
"all"` and exits 0 -- a green check that guarded nothing. With the current
registry that state is unreachable, because the six '*' entries always match;
the branch is kept as defensive handling for a future registry and says so.

timeout-minutes: 15 bounds the required job against a hanging fork-supplied test;
it had none. npm ci was added because the job never installed dependencies -- the
previous single-file step got away without it, the registry does not.

docs/contributing/docs-guard-registration.md documents the rule, following its
sibling cross-platform-portability-rules.md, and CONTRIBUTING.md's CI Test
Quality Checks table links to it. It is also load-bearing: without a docs/ file
in the diff this PR would not have triggered its own lane, shipping an
unexercised change to a required check.

One unrelated fix, included because this PR surfaced it and CLAUDE.md forbids
deferring a defect found while working. On this branch's first CI run,
`full test (windows-latest, 24, shard 3/3)` was CANCELLED at exactly 30 minutes;
tests were still passing 0.8s before the cancel, so it is a wall-clock timeout,
not a hang, and a cancelled job reddens `Required tests`.

The cause is not this PR's test file, which costs ~60ms. Shard composition is
unstable: adding ONE file to the unit suite reshuffled 115 of 268 files between
shards, and shard 3 drew a heavier mix. Underneath that is a real pre-existing
defect. tests/ci-test-job-timeout-budget.test.cjs requires every lane's budget to
be >= 1.5x its MEASURED cost -- "a lane that got slower must be re-budgeted, not
excused" -- and its test-full entry recorded 19m from a windows-22 shard. That is
stale. Measured on `next` with none of this PR's changes present: 26m18s (run
32614439702, windows-latest/24 shard 3/3), 23m36s and 23m17s on shard 2/3. So the
lane costs ~26m and the 30-minute cap carried 1.14x headroom, not 1.5x. The gate
had been out of compliance with its own rule; this PR was merely the file
addition that reshuffled shard 3 past the cliff.

Fixed as that file prescribes: measuredMinutes 19 -> 27 with fresh evidence, and
test-full timeout-minutes 30 -> 45. The rule's minimum for 27m is 41; 45 is
deliberately above it because the reshuffle means per-shard worst case moves run
to run, and a budget pinned to the exact minimum would be re-breached by the next
test file anyone adds. Only that one job's timeout changed; test.yml's scope,
matrix and steps are untouched, so #764's saving is unaffected.

Raising that cap let the Windows shard finish (28m45s, inside 45) and uncovered
a real failure the 30-minute cancel had been masking:
`new quick-task branch branches off origin/main (#2916)` died with
`outcome=timed_out exitCode=null`, SIGTERM, at the 15000ms bound.

tests/quick-branching.test.cjs:149 `runStep` runs a `#!/usr/bin/env bash` script
executing MULTIPLE git commands, but was bound to GIT_TIMEOUT_MS (15000) -- the
norm for a SINGLE git plumbing call. tests/helpers/timeouts.cjs already documents
this exact failure and exists to fix it: HOOK_FANOUT_TIMEOUT_MS was created after
PR #3285 recorded "outcome=timed_out exitCode=null at exactly the 15000ms probe
bound while every other lane passed the same commit", and calls that "a bound
sized for the wrong class, not a slow machine". Our failure is that case
verbatim, so both sites move to the class norm rather than to a bigger number.

The same class also failed on `next` itself 21 hours earlier -- run 32608945654,
windows-latest/24 shard 1/3, `plan touching only src/ in a submodule project
keeps worktree isolation ENABLED` -- where tests/worktree-safety.test.cjs:5845
`runGate` fans out to `git config --file .gitmodules` under a hardcoded 30000.
Fixed too, since it is a defect in the tree regardless of which branch surfaced
it.

A survey of the whole tests/ tree found the same class-mismatch at further
bash fan-out sites bound under 60000ms, and the maintainer approved sweeping
them rather than leaving them latent to surface the same way one at a time. 16
fan-out sites across 16 files now use the class norm.

The sweep is class-correctness, not raising numbers until things pass. Sites
were moved ONLY where the bash body demonstrably spawns something (git, node,
npm, a CLI); self-contained shell snippets were left where they are, and are
listed as deliberately unchanged: pure if/printf bodies (copilot-install), pure
array/case builtins (code-review-pipeline-regression:638), a documented
pure-shell gsd_run stub (host-integration), single-process hook calls
(workflow-guard:222/271/302), and a deliberately tight 5000ms fast-check hook
(gsd-write-guard.property). Nothing was lowered. process-seam.test.cjs:513
(literal 300) is untouched on purpose -- it tests timeout BEHAVIOR, so raising
it would destroy what it asserts.

Shared file-level constants were the trap here, and were handled per file rather
than by redefinition: GIT_TIMEOUT_MS has ~15 users in git-base-branch and only 1
is a fan-out; WORKTREE_TIMEOUT_MS has 16 users in worktree.test.cjs and 3 are;
PROBE_TIMEOUT_MS has several in three more files. In each the CALL SITE was
changed and the constant left alone, so no single-plumbing-call site silently
inherited a 60s bound. The one exception is hooks-opt-in.test.cjs, where
HOOK_TIMEOUT_MS has exactly one consumer -- spawnHook, the fan-out itself -- so
redefining it is identical in effect and reads better.

Only two of these sites have actually been observed failing. The rest cite that
shared class and those two run ids rather than inventing evidence of their own.

Co-authored-by: sim <sim@local>
2026-08-23 21:21:21 -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
Behruz Nassre Esfahani
f0abdb1b89 fix(#2486): do not recommend or persist Claude-only worktree isolation on non-Claude runtimes (#2531)
* fix(#2486): runtime-branch the settings worktrees question + W020 health diagnostic

On non-Claude runtimes /gsd:settings offered "Yes (Recommended)" for
worktree isolation and persisted workflow.use_worktrees: true — the exact
value the execution workflows fail closed on (#1521 guards). Branch the
question on the same stamped config-get runtime read the guards use:
Claude keeps the unchanged question; non-Claude offers only
"No (Recommended)" / "Leave unchanged", never persists true, and warns
when the config carries an inherited explicit true. /gsd:health gains
W020, surfacing such a config with the guards' own predicate before
execution-time failure. Docs state the runtime-conditional default.

Fixes #2486

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

* chore(#2486): add changeset for PR #2531

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

* fix(#2486): reassign the health worktrees check W020 -> W024 (verify.cts namespace collision)

The workflow-level check collided with the live W020 (git-worktree-list
health) emitted by cmdValidateHealth in src/verify.cts — invisible from
health.md's error_codes table, which stops at W019 and under-represents
the real namespace (W010-W017, W020-W023 all live). W024 verified free.
Adds a regression test pinning the chosen code against src/verify.cts so
a future assignment cannot silently collide, a table note naming the
namespace owner, and the changeset body reworded to house style.

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

* fix(#2486): pre-select the recommended repair in the broken-inheritance case

Review round 2: at settings.md:142 the pre-selection rule left "Leave
unchanged" as the default when the config carried an explicit
non-false use_worktrees — the exact broken state the adjacent notice
warns about, so accepting the default kept a config that fails closed
at execution time. "Leave unchanged" is now the default only when the
key is absent (nothing to repair); explicit false AND explicit
non-false both pre-select "No (Recommended)", aligning the default,
the label, and the notice.

Pinned by two source-contract assertions in the #2486 regression
block. Goldens (settings.md hash x19) + size baseline regenerated.

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

* fix(#2486): gate the worktrees question on dispatch.isolation, not the runtime name

Review round 2: #2584 Phase 3 replaced the runtime-name test with a
declared `dispatch.isolation` capability, invalidating this PR's
premise. cursor declares harness-worktree and codex/opencode/kimi/
kimi-code declare orchestrator-worktree, so a `RUNTIME != claude` gate
blocked a supported configuration on five runtimes and false-warned in
health.

- settings.md + health.md read `query dispatch-isolation` and branch on
  `ISOLATION = none`; the runtime-name read is gone from both, and the
  capability read needs no per-runtime stamping (it fail-closes unknown/
  undocumented internally)
- all "Claude Code-only primitive" prose rewritten, including the two
  gates the shell-syntax check missed (config-key list, JSON schema
  comment)
- W024 reconciled across health.md + CONFIGURATION.md + planning-config.md
  (docs still said W020, which collides with a verify.cts code)
- health.md error-codes table fixed: the namespace note no longer sits
  between rows orphaning I001
- the asymmetry note for the two workflows #2584 has not migrated
  (quick.md, diagnose-issues.md) is enforced by a set-equality test with
  a self-check table, so it cannot go stale in either direction

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

* docs(#2486): restore the Executor isolation section clobbered by #2661

`46ba02ac` (feat(#2630), the current next tip) reverted docs/CONFIGURATION.md
to a pre-#2584 state: it restored the old "Non-Claude note" wording on the
workflow.use_worktrees row and deleted the whole "Executor isolation per
runtime" section. The change is unrelated to that PR's phase-estimation
feature and looks like a stale-copy edit.

This PR's use_worktrees row links to #executor-isolation-per-runtime, so the
deletion leaves a dangling anchor. Restored byte-for-byte from a40ee8a5 (the
text #2584 Phase 3 originally shipped). No link/anchor checker exists in
scripts/ or tests/, so CI would not have caught the dead link.

The reverted row wording is outside this PR's scope and is still wrong on
next; reported upstream as #2668.

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

* test(#2486): acknowledge the emitted size growth for settings.md and health.md

The #2723 differential attribution check (epic #2719 Phase 3) landed on next
after this branch opened and gates emitted-file growth behind a committed
acknowledgment. Both grown files are attributable to source this PR changes;
the ack names them and says why, per ADR-2719 §3.

Verified load-bearing: removing tests/emitted-drift-ack.json reproduces the
same failure; restoring it passes 59/59.

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

* fix(#2486): reword the W024 remediation so it names no bare gsd-tools call

The W024 warning told the user to run `gsd-tools query config-set`, a
command-position bare invocation that fails with "command not found" on a
shim-only install (#2751) — the diagnostic sent the user into a second,
more confusing error than the one it reported. The remediation now names
only `/gsd:settings` and the config key itself, both of which work on
every install layout, and the #2751 command-position gate goes green.

Fixes #2486

* fix(#2486): drop the Known-asymmetry note and its guard test — #2728 migrates both workflows

Review Major 2: once #2728 lands, the note describes a gap that no longer
exists and instructs maintainers not to do the thing that was just done —
with the set-equality guard test pinning the stale prose green. This PR now
depends on #2728 (declared in the PR body), so the note and its guard go.

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

* test(#2486): make the #2728 merge order enforceable instead of advisory

settings.md recommends and persists `workflow.use_worktrees: true` for every
runtime whose declared dispatch.isolation is not `none` — cursor
(harness-worktree) and codex/opencode/kimi/kimi-code (orchestrator-worktree).
quick.md and diagnose-issues.md consume that value at dispatch time and, while
they still gate on the runtime NAME, FATAL for all five. Merged first, this PR
reintroduces #2486's own shape for the exact runtimes it exists to help — on
the path it now labels "Recommended".

The dependency was stated only as prose in the PR body. A merge-order note is
not a gate: an automated batch merge never reads it. This adds the check that
makes the ordering structural — red while either sibling is still name-gated,
green the moment #2728 lands.

The predicate matches a RUNTIME-vs-"claude" comparison, not the legitimate
runtime-identity read, and accepts either the inline canonical
dispatch-isolation read or a reference to dispatch-isolation-gate.md, which is
the shape #2728 gives quick.md. Verified both directions against real sources:
red against the current workflows, green against #2728's.

This also closes W024's coverage window. W024 fires only when ISOLATION is
`none`, so it is structurally blind to these five runtimes — /gsd:health would
report healthy right up until quick.md FATALs. W024 cannot see the hazard, so
the hazard is prevented by making the unsafe ordering unmergeable rather than
by warning after the fact.

Separately, the W-code namespace-collision test now declares its source read
instead of passing lint silently: verify.cts emits its codes as inline string
literals across ~25 addIssue() calls and exports no enumerable registry, so
there is nothing to require() and assert against. The gap, and what it costs,
are stated in the test.

* docs(#2486): use the hyphen command form for /gsd-health in CONFIGURATION.md

docs/ is never passed through the install-time slash-form converters, so the
colon form names a command no runtime registers. Clears the sole
lint-docs-command-form violation attributable to this PR.

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

* fix(#2486): resolve isolation via new side-effect-free inspect-dispatch-isolation query; scope the settings change to isolation-none runtimes

Review round 4:

- B1: /gsd:health and /gsd:settings no longer call the recording
  dispatch-isolation query — on current next it persists the resolved
  decision to the executor-isolation sentinel as an unconditional #3045
  side effect, letting a read-only diagnostic hard-block executor
  dispatch for the sentinel's lifetime across sessions. Both surfaces now
  use inspect-dispatch-isolation, a new read-only verb sharing the exact
  resolution implementation (extracted resolveDispatchIsolationDecision)
  with zero writes. Behavioral tests pin: no sentinel write, per-runtime
  parity with the recording verb, recording knobs ignored, --json shape.

- B2: the #2728 merge-order interlock test is deleted — a repo test
  cannot sequence merges; it only made this PR unmergeable on its own
  schedule. The settings behavior change is scoped entirely to the
  ISOLATION=none branch, which needs nothing from #2728; the != none
  path is base behavior unchanged.

- M1: the W024-vs-verify.cts namespace test (an admitted source-grep) is
  deleted per RULESET.TESTS.delete-bad-tests, without a standing
  exemption; the namespace claim lives as guidance in health.md.

- M2: remaining allow-test-rule exemptions re-derived into documented
  categories (source-text-is-the-product, integration-test-input) with
  issue refs per ADR-456.

- Minor: settings.md's current-value read drops the stampable
  --default/fallback so key-absence stays distinguishable from an
  explicit false on non-Claude emits (the pre-selection rule depends on
  the tri-state); docs now present inspect-dispatch-isolation as the
  inspection command and name dispatch-isolation as the recording
  resolver.

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

* fix(#2486): put the install-marker rung in the canonical runtime resolver

Round-7 review (independent cross-AI pass over the whole PR).

BLOCKER — the gate did not fire in the default case. `resolveRuntime`
stopped at GSD_RUNTIME > config.runtime > 'claude', and
`config-new-project` writes NO `runtime` key — so on a real non-Claude
install every consumer believed it was on Claude: isolation reported
`harness-worktree`, /gsd:settings still offered "Yes (Recommended)" and
W024 stayed silent. That is #2486's own symptom, surviving the fix meant
to remove it. Verified end-to-end on a real `--qwen` install with a
runtime-neutral config and GSD_RUNTIME unset: pre-fix `harness-worktree`,
fixed `none`.

The rung lives in `resolveRuntime` (src/runtime-slash.cts), the ONE
canonical resolver, not in the isolation call site. A per-consumer fix
forks precedence: `inspect-dispatch-isolation` would answer `cursor` while
`dispatch-should-flatten` and `resolve-dispatch-type` still answered
`claude` for the same install. All three now agree. `readInstallRuntimeMarker`,
its cache and its test seams MOVED from model-resolver.cts to
runtime-slash.cts, with model-resolver re-exporting the seams — one marker
read and one cache, not two that drift.

Deliberately NOT `resolveActiveRuntime`/`loadConfig`: an intermediate
revision of this fix routed through `loadConfig`, which normalizes and
rewrites legacy keys back to disk. That gave `inspect-dispatch-isolation`
— the verb whose entire purpose is being side-effect-free — a write side
effect, which is the defect the verb exists to avoid. `resolveRuntime`
reads .planning/config.json directly. Re-verified: the inspect query
against a real install creates no `.gsd/`.

Tests, both of which were too weak in the first attempt and are now
fail-first proven:
- The W024 behavioral stub returned success-with-empty-output for an absent
  key. Real `config-get` EXITS NON-ZERO, and the `|| echo "true"` fallback
  only triggers on failure — so reintroducing the fallback would have passed.
  The stub now returns 1 for the absent case.
- The marker regression asserted on the exported helper, so reverting
  gsd-tools.cjs to a marker-blind resolver still passed. It now drives a real
  `--qwen` install through the shipped `inspect-dispatch-isolation` query.
  (GSD_TEST_MODE must be cleared for that child, or install.js no-ops while
  still exiting 0 — a green test over an install that wrote nothing.)
  Spawned through `installSpawnEnv()` so ambient GSD_HOME cannot leak in.

Also: the three PR-added `try/finally` test bodies converted to `t.after()`
per CONTRIBUTING; CONTEXT.md's `worktree create` UNCONSUMED claim corrected
(Phase 3 calls it in executor-isolation-dispatch.md); docs/CONFIGURATION.md
now states the current non-Claude `use_worktrees` default rather than
describing capability-scoped stamping that lands with #2652; resolver
precedence comments updated to name the marker rung.

Refs #2486
Refs #2668

* fix(#2486): split the marker rung out; make the use_worktrees doc row order-independent

Round-8 review. trek-e's Blocker was procedural — commit 10fba7b8 moved the
per-install .gsd-runtime marker rung into the canonical resolver, a large
blast-radius change that arrived undisclosed and unreviewed. They offered
two remedies; taking the second: SPLIT IT OUT.

src/runtime-slash.cts and src/model-resolver.cts are reverted to their next
state and the marker regression test is removed. What remains is what this
PR was filed for: the settings.md / health.md / gsd-tools.cjs isolation
query, W024, and the #2668 docs restoration.

COST, stated plainly rather than buried: without that rung this PR's gate
resolves 'claude' on a non-Claude install whose project config carries no
`runtime` key — which is every config config-new-project writes. On those
installs W024 stays quiet and /gsd-settings still offers Worktrees. The gate
is correct whenever the runtime IS resolvable (GSD_RUNTIME set, or an
explicit config.runtime). That is why `Fixes #2486` is already downgraded to
`Refs` — #2486 must not close until the residual lands. A KNOWN LIMITATION
comment at the resolver call site names #2395 so this does not read as an
oversight.

The rung itself belongs to #2395, which reports this exact defect and was
closed by #2446 — a PR that touched only bin/install.js and fixtures and
never runtime-slash.cts, so it persisted the identity into
~/.gsd/defaults.json, a tier resolveRuntime does not read. Evidence and a
reopen request are posted there. That same tier is #2566's B1.

DOCS — the reviewer flagged that this row and #2728's are order-dependent:
whichever merges second falsifies the other. Removed the dependency instead
of picking an order. The "Current default … until #2652" paragraph is now a
plain troubleshooting note, true before and after #2728 lands.

CONFLICT — one hunk in CONTEXT.md: next added the #2596 scope-conformance
interface to the same Worktree-Safety paragraph where this PR corrected the
`worktree create` UNCONSUMED claim. Resolved keeping both.

Verified: lint:ci green. Full suite clean apart from the pre-existing
#1160 installed-runtime capability surface. (emitted-attribution also failed
until the fork's stale next was fast-forwarded — it defaults to origin/next,
which was 131 commits behind; 175/175 against the current base.)

Refs #2486
Refs #2668

* fix(#2486): address round-9 review — distinguish "cannot resolve" from "declares none", reject recording-only args on the read verb

Codex review of the whole PR, five findings, all verified against source first.

Major 3 (the one real defect). Both surfaces read isolation as
`ISOLATION=$(… || echo "none")`, so a resolver failure became indistinguishable
from a genuine `dispatch.isolation: none` declaration — and W024's text then
asserts the latter, telling a user their runtime declares no executor-isolation
primitive when GSD simply could not find out. health.md and settings.md now
capture the raw value and track ISOLATION_RESOLVED, the same shape
references/dispatch-isolation-gate.md already uses (#2652 review). W024 gained a
second message for the unresolved case; settings still fails closed there — it
must never persist a `true` it cannot justify — but reports what happened rather
than a verdict it never reached.

Major 4. `dispatch-isolation` applies --force-isolation AFTER the shared
resolver returns; inspection accepted the flag and silently ignored it, so the
same argv yielded 'none' from one verb and the declared capability from the
other. inspect-dispatch-isolation now rejects --force-isolation/--phase/--plan
as usage errors. Verified by mutation: disabling the guard reds exactly the
three new rejection tests.

Major 1. settings.md claimed this flow and the execution guards "always reach
the same verdict". False while quick.md still gates on the runtime name: an
orchestrator-worktree host can be offered a `true` that /gsd:quick rejects as
fatal, W024 silent because isolation is not none. Scoped the claim to the
capability gate, named #2728 as the conversion, and added the same caveat to the
CONFIGURATION.md use_worktrees row. Not a behavior change — the `!= none` branch
is untouched base behavior.

Major 2. "side-effect-free" overstated it: every gsd-tools invocation runs the
shared bootstrap, and getActiveWorkstream unlinks a stale workstream pointer.
That is pre-existing, verb-independent and cannot block a dispatch; writing the
sentinel can. Renamed the claim to "sentinel-free" everywhere and documented
precisely what is and is not asserted.

Minor 5. The JSON parity test asserted against a handwritten key list and never
invoked the recording verb, so the two could diverge and stay green. It now runs
`dispatch-isolation --json` in a separate project dir and deep-compares, with a
control asserting that verb DID write a sentinel. Added the orchestrator exec
branch (--cwd-target) the registry parity test never covered.

runtime-converters.test.cjs pinned the old `|| echo "none"` line as canonical —
that literal was the Major 3 defect. Repinned as two invariants (the raw read is
present; the collapsing fallback is absent) plus an ISOLATION_RESOLVED
requirement, so reformatting does not fail the test but a semantic regression
does.

settings.md sits at 40777 bytes against the 40960 DEFAULT hard cap. The
round-9 prose was compressed to fit rather than raising the cap.

Validated: lint:ci clean; full suite green except the two failures that
reproduce identically on pristine next @ 33fca50d (#1160 _resolveManifest, and
the #3053 quick_id tests, which compare a local-time expectation against a
TZ=UTC child and so only pass on a UTC host).

* fix(#2486): second review pass — drop a dangling reference, correct the whole unresolved branch, pin the branch behaviorally

Codex re-review of the full PR after the first round-9 pass. It confirmed Majors
1, 2 and 4 and Minor 5 fixed, and found seven more. All verified against source.

Minor 5 was mine and the worst of them: settings.md and health.md pointed at
`gsd-core/references/dispatch-isolation-gate.md`, which exists only on the #2728
branch — not in this PR and not on the merge-base. Merging this alone would have
shipped three dangling canonical-source references. Removed; the surrounding
text now stands on its own.

Major 2. The unresolved branch corrected only the two option descriptions. The
pre-selection rationale still claimed an absent key already resolves to false on
this runtime, and the explicit-true notice still stated the runtime declares no
primitive — both capability verdicts that were never reached. The substitution
rule now covers every place in that branch that asserts one.

Major 3. The repinned invariants could not catch the mutation they existed to
catch: flipping the shipped block's ISOLATION_RESOLVED=true to false left all
three green, since they only assert the raw read is present, the token appears,
and the collapsing fallback is gone. Added a behavioral test that drives the
shipped W024 block twice — resolver answering vs resolver exiting non-zero — and
asserts the two emit different text, that the unresolved branch says "could not
resolve", and that it does NOT claim the runtime has no primitive. Verified: the
true->false mutation now reds it.

Major 1. The verb fail-closes an unknown or undeclared runtime to `none` and
exits 0, so ISOLATION_RESOLVED=true means "the query answered", not "the runtime
published a declaration" — the shell cannot see an internal fallback. Exposing
provenance is an API change and out of scope here, so W024's resolved-case text
is instead written to be true of every path that reaches it ("no usable
executor-isolation primitive — declared or fail-closed from an unknown value"),
and both workflows state the limit of the signal explicitly.

Minor 4. The rejection tests regex-matched human prose, so swapping
ERROR_REASON.USAGE for UNKNOWN would have kept them green while breaking machine
consumers. They now pass --json-errors and assert reason === 'usage' on the
parsed envelope.

Minor 6. CONTEXT.md still described the verb as side-effect-free. Now
sentinel-free, consistent with the router comment and the other two surfaces.

Minor 7. 183 bytes of headroom under the 40960 hard cap was called
unacceptable, and it was — a routine 184-byte edit would have failed CI.
Compressed this PR's own settings.md prose (the #2486 block was carrying ~7.1KB
of rationale) to 40499 bytes, 458 free. Two phrases other tests pin verbatim
were restored after the first compression pass reworded them.

Validated: lint:ci clean; full suite green except the two failures that
reproduce identically on pristine next @ 33fca50d.

* fix(#2486): third review pass — placeholder table replaces the fragile substitution rule

Codex round 3 blocked the push on two Majors. Both verified and real.

Major 2 was the substantive one and my error. The round-2 fix told the model to
find and replace the string "this runtime declares no executor-isolation
primitive (dispatch.isolation: none)" — text that does not appear anywhere in
the branch. The first option description has no parenthetical, the second
asserts "absent, it already resolves to false on this runtime" (not covered at
all), and the pre-selection rationale and notice carried three more unsupported
assertions. A model following the instruction literally would have found no
match and changed nothing.

Replaced with three named placeholders — {FINDING}, {CONSEQUENCE}, {ABSENCE} —
and a two-column table giving each one's resolved and unresolved wording. Every
assertion in the branch now flows from the table, so none of them can outrun
what was actually established, and there is no string-matching to get wrong. It
is also shorter than the prose it replaced.

Major 1: the resolver catches thrown errors and returns none successfully, a
path the round-2 wording ("declared, or unknown/undeclared") did not cover.
Both surfaces now say "declared as none, or fail-closed because the capability
could not be determined", which is true of the thrown path too, and both state
that an internal resolution error is among the things the verb fail-closes.
Still not provenance — the verb cannot distinguish these for the caller — but no
longer a claim the code contradicts.

Minor 3: the behavioral test asserted only that the two branches differ and that
the resolved one omits "could not resolve", so arbitrary resolved text stayed
green. Now pins what it must positively say: the capability finding, the
fail-closed consequence, the offending key, and (both branches) the repair
command.

Minor 4: two stale artifacts the round-2 sweep missed — a test comment still
citing the #2728-only references/dispatch-isolation-gate.md, and the emitted
drift ack still describing inspection as side-effect-free. Also aligned the two
remaining router comments to sentinel-free.

settings.md 40420 bytes, 540 free under the cap.

Validated: lint:ci clean; full suite green except the two failures that
reproduce identically on pristine next @ 33fca50d.

* fix(#2486): fourth review pass — stop recommending a repair whose effect depends on the emit

Codex round 4, one Major and three Minors. The Major is a real hole and worth
the round.

W024 advised "remove the key from .planning/config.json so the runtime default
(false) applies". That default is not false everywhere: execute-phase.md:102,
quick.md:155 and diagnose-issues.md:62 all read the key as
`|| echo "true"`, and only `_stampNonClaudeRuntimeDefaults` rewrites them to
`--default false` on a non-Claude emit. So on an un-stamped emit the advised
repair leaves use_worktrees resolving to TRUE against isolation none — exactly
the state W024 exists to flag. Reachable in the round-3 gap: a caught internal
resolver error returns none with rc=0, so ISOLATION_RESOLVED is true and the
confident branch fires on a host whose emit was never stamped.

Fixed by removing the dependence rather than the symptom: both surfaces now say
to set workflow.use_worktrees false explicitly, and say why deleting the key is
not equivalent. The {ABSENCE} placeholder no longer claims absence resolves to
false unconditionally — it is scoped to an emit that stamped that default.

Minor: the notice and W024 hardcoded .planning/config.json, which is the wrong
file in an active workstream (settings itself resolves $GSD_CONFIG_PATH
correctly). Both now say "the project config", naming the workstream case.

Minor: the new repair pin required the literal /gsd:settings, a form documented
as no longer routable. Relaxed to accept the canonical slash and $-prefixed
forms so a correct rewording cannot fail the test.

Nit: two test descriptions still said side-effect-free.

Not fixed, deliberately: the verb still cannot tell a caught resolver error from
a declared none, so ISOLATION_RESOLVED remains a signal about the CALL, not the
declaration. Both workflows now state that limit outright. Exposing provenance
is a change to the query contract that belongs with the runtime-resolution work
in #2395, not here.

Validated: lint:ci clean; full suite green except the two failures that
reproduce identically on pristine next @ 33fca50d. The only change after that
suite run was removing a redundant regex escape flagged by eslint; that test was
re-run individually and eslint is clean.

* fix(#2486): fifth review pass — stop recommending "leave it absent" as the safe default

Codex round 5, one Major: the round-4 fix corrected the {ABSENCE} wording but
left the pre-selection rule built on the assumption it had just falsified. An
absent key still pre-selected "Leave unchanged" on the rationale that there was
nothing to repair. Absence resolves to false only where the emit stamped that
default; on an un-stamped emit it reads as true, so accepting the recommended
default could preserve the exact isolation-none-plus-true state this branch
exists to prevent.

The isolation-none branch now pre-selects "No (Recommended)" in every case,
including an absent key. Writing an explicit false is correct under either emit;
"Leave unchanged" stays available for the deliberate shared-config case but is
never the default. The test that pinned the old rule pinned a falsified
assumption, so it now pins the new one and asserts the old sentence is gone.

Also tightened the round-4 repair regex, which had been relaxed far enough to
accept `$gsd:settings` and `/gsd:settings-bogus`. It now matches only the
canonical `/gsd-settings`, `/gsd:settings` and `$gsd-settings` forms.

settings.md 40685 bytes, 275 free.

Validated: lint:ci clean; full suite green except the two failures that
reproduce identically on pristine next @ 33fca50d.

* fix(#2486): make the inspection exemption block-scoped, and drop the last pre-#2728 claim

Codex review of the conflict resolution: one Major, two Minors, all real.

Major. The inspection-surface exemption I added to #2728's "every dispatch-site
degrade block re-records" guard was FILE-wide. Codex probed it by adding an
unrecorded executor block to health.md: the exemption assertions still passed,
the whole file was skipped, and the offender went unreported. That is the same
hole the hand-listed revision of this guard had — a promise of "every dispatch
site" with a silent carve-out.

Now scoped per block. A block earns the exemption only by resolving through
`inspect-dispatch-isolation` AND carrying no dispatch primitive (`Agent(`,
`harnessFlag`/`HARNESS_FLAG`, `isolation="worktree"`, or the recording verb).
The file-level assertions remain as a precondition on top. Verified with Codex's
own probe: the appended dispatch block is now reported at health.md:285, while
the legitimate inspection block still passes.

Minor. settings.md still carried the caveat saying `quick.md` gates on the
runtime name and "#2728 converts that surface". #2728 has landed. Same obsolete
premise already removed from docs/CONFIGURATION.md in the merge commit; this was
the copy I missed. Removing it also returns 413 bytes, so settings.md now has
688 free under the 40960 cap rather than 275.

Minor. Four scratch-directory prefixes still read `w024` after the renumber.
Non-functional, but the whole point of the rename was that W024 now means
someone else's warning.

Validated: lint:ci clean; full suite green except the two failures that
reproduce identically on pristine next.

* fix(#2486): name the diagnostics' state INSPECTED_ISOLATION and delete the exemption

Codex probed the per-block exemption and it was still escapable: DISPATCH_PRIMITIVE
matched only `Agent(`, two harness-flag spellings, `isolation="worktree"` and the
recording verb, so `Task(`, `spawn_agent(`, a `codex exec` process dispatch, and —
unfixably by any regex — the repo's normal split shape (isolation resolved in one
bash fence, dispatch in a later one) all still qualified as exempt.

Took Codex's suggested fix, which is better than the one it replaces. The
diagnostics now name their state `INSPECTED_ISOLATION` / `INSPECTED_RESOLVED` /
`_INSPECTED_RAW` instead of reusing the dispatch-site names. #2728's guard scans
for a literal `ISOLATION=none`, so health.md and settings.md fall outside it BY
CONSTRUCTION and the exemption is deleted outright — no carve-out to escape, and
a diagnostic that ever writes a real `ISOLATION=none` is caught like any other
site. The name is also just more accurate: an inspection result is not a dispatch
decision.

Pinned so the reasoning cannot be lost: the #2486 suite now asserts neither
diagnostic assigns the bare `ISOLATION` name, with the rationale in the comment.
Verified by mutation — renaming back makes #2728's guard flag health.md:107 AND
fails the new naming pin.

Net effect on the guard's coverage is positive: before this PR it scanned two
fewer files by exemption; now it scans everything.

settings.md 40352 bytes, 608 free.

Validated: lint:ci clean; full suite green except the two failures that reproduce
identically on pristine next.

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-08-12 20:45:08 -04:00
Tom Boucher
33fca50d8a test(#3333): fold the runtime & install surface fix-* cluster — Wave 1 (#3341)
* test(#3333): fold the runtime & install surface fix-* cluster — Wave 1

Folds 11 legacy tests/fix-*.test.cjs regression files into their module's
main test suite: 6 folded into existing suites (host-integration-descriptors,
effort-surface-axis, trae-imperative-reference, hermes-skills-migration,
gsd-agent-isolation-guard), 5 renamed to become the module's sole suite
(cursor-hook-workspace-roots, cursor-subagent-isolation,
lint-compiled-artifact-sync, hooks-commonjs-marker,
shared-hooks-dir-resolution). All 195 test() blocks preserved with zero
drops; lint-test-file-count.cjs and eslint remain clean. No production code
changed. Wave 1 of 7 in #3315 (H3 of epic #3053).

* test(#3333): replace try/finally with t.after() in isolation-guard tests

CONTRIBUTING.md bans try/finally inside test bodies (masks failures, not an
approved pattern). The fold in the prior commit carried 27 instances forward
verbatim from the deleted fix-3045-dispatch-isolation-resolver.test.cjs into
an otherwise-clean file. Converts each to the approved per-test t.after()
cleanup pattern — same cleanup call, registered instead of finally-wrapped.
No assertion, fixture, or test-name change; test( count unchanged at 50.

Found by the Standards review pass on Wave 1 (#3333, H3 of epic #3053).

* fix(#3333): restore raw NUL byte mangled by the fold in hermes-skills-migration.test.cjs

The prior fold commit copied fix-2284-hermes-agent-delegate-task-projection's
"collision-robust" test via a text-based Read/Write pipeline, which silently
turned a raw NUL byte (0x00) embedded in two string literals into a regular
space character. That corrupted the test's actual purpose (proving a NUL
byte survives a string-rewrite operation untouched) and produced a genuine
gsd-test failure: `24 !== 1` for `out.split(' ').length`, because splitting
on a space finds every space in the sentence instead of the single NUL byte
the test meant to isolate.

Root-caused by diffing the raw bytes (via `git cat-file blob` + `cat -v`)
between the pre-fold source and the folded target — confirmed exactly two
bytes differ. Restored via a byte-precise patch (latin1 round-trip) touching
only those two lines; test( count and every other byte unchanged.

* fix(#3333): use \x00 escape sequence instead of a raw NUL byte in test fixture

The prior commit restored a byte-exact raw NUL byte matching the original
fix-2284 source, and the production function (applyClaudeCodeBrandSwap) was
confirmed correct in a standalone repro. But the same raw byte still failed
through gsd-test's remote pipeline. Root cause is upstream of gsd-core: some
step in that transfer path does not carry a raw 0x00 byte through untouched.

A raw embedded NUL byte was never necessary here — `\x00` as a 4-character
escape sequence in the source text produces the identical runtime character
(U+0000) without ever putting a raw byte in the tracked file, sidestepping
any byte-oriented transfer step. Applied at both call sites (the fixture
string and the split() delimiter). No behavior change; test( count unchanged
at 76.

* fix(#3333): harden copyWithPathReplacement against a source file vanishing mid-copy (TOCTOU)

Surfaced by this PR's own gsd-test run: tests/install-minimal-hooks.test.cjs
and tests/opencode-command-dir-plural.test.cjs intermittently crashed with
ENOENT reading gsd-core/workflows/zzz-e5-drift-fixture.md. Root cause is
unrelated to test-file consolidation — tests/planning-prompt-drift.test.cjs
writes that fixture directly into the real, shared gsd-core/workflows/ tree
(main() hardcodes its scan root to the real repo) and deletes it in
t.after(); copyWithPathReplacement's readdirSync-then-read loop has no
protection against the listed file vanishing before it gets there, so a
concurrently-running install path can crash entirely on what is otherwise a
completely benign race.

Fixed by skipping (not crashing on) a listed entry that no longer exists by
the time the loop reaches it. Added a regression test that deterministically
reproduces the race (readdirSync snapshot still lists the file; it is
deleted immediately after) and proves both outcomes: no throw, and the
vanished entry's destination is never partially written.

Per CLAUDE.md's no-defer rule, a defect surfaced while verifying this PR is
fixed inline rather than deferred — this overrides one-concern-per-PR.

* fix(#3333): fix third NUL-byte-mangled occurrence missed by prior fix passes

The fold originally mangled three raw-NUL-byte occurrences to spaces, not
two — the earlier byte-restore and escape-sequence commits both only
targeted the fixture string and the split() delimiter, missing
out.includes('[ ]') a few lines below (should read out.includes('[\x00]')).
A remote gsd-test run kept failing on this exact assertion even after both
prior fixes, which is what surfaced the miss. Verified via a standalone
repro using the file's real (not retyped) fixture content: all six
assertions in the collision-robust test now pass. Zero raw NUL bytes remain
in the file; test( count unchanged at 76.

* chore(#3333): add changeset for the copyWithPathReplacement TOCTOU fix

Fixed-type fragment for the production defect fixed inline in this PR
(bin/install.js's copyWithPathReplacement). Exempt from docs/ requirements
per CONTRIBUTING.md (only Added/Changed/Deprecated/Removed require it).

* chore(#3333): backfill changeset PR number (pr:0 -> pr:3341)

---------

Co-authored-by: sim <sim@local>
2026-08-10 19:02:34 -04:00
Tom Boucher
9faacc0c15 test(#3148): bound the long tail and delete the unbounded-spawn allowlist (#3192)
* test(#3148): bound the long tail and delete the allowlist

Migrates the final 170 unbounded sync spawn sites across 49 files, then
removes the allowlist entirely. local/no-unbounded-spawn now runs with no
exemption surface across tests/**: there is no file to add a name to.

drift-detection's throw-native git() helper routes to gitOrThrow -- bare
runGit would have taken 16 call sites quiet on failure. commands.test.cjs
has two independently-scoped runGsdTools/runCli helpers, one already bounded
and one not; they are kept distinct rather than unified, the same trap as the
two same-named git() helpers in Wave 1.

runNpm's bound was erasable. Its options spread callerOptions after the
defaults, so an explicit timeout:undefined silently dropped the 180000ms
bound -- the rule flagged it and was right; it was not a false positive. Fixed
by destructuring with a default, with a test that fails when the default is
removed.

Two sites stay on a raw spawn with an explicit timeout because the seam
cannot express them: one needs shell:true for npm.cmd on Windows, one
redirects stdout to a real fd. Both are the rule's own documented second
option, not an escape from it.

Closure verified rather than asserted: the derivation scan reports 0 unbounded
spawn helpers and 0 unbounded direct git call sites, and a temporary file
carrying an unbounded spawn still errors with the allowlist gone.

Closes #3064.

* test(#3148): close a hole in the guard's own eslint-disable ban

The ban listed only the top level of tests/, so it was blind to 37 .cjs
files under tests/helpers, qa, observability, fixtures and dispatch. With the
allowlist deleted this test is the sole remaining way to detect someone
silencing the rule inline, so the gap was load-bearing: a nested file could
carry an unbounded spawn plus an eslint-disable and pass everything.

Proven before and after. A probe planted under tests/helpers with both was
invisible to the guard and clean under eslint; after making the listing
recursive the guard fails on it. The scanned set goes from 771 files to 808.

Pre-existing since the guard shipped, but this wave is what promoted it to
sole defense, so it is fixed here rather than filed.

Also converts the last hand-rolled throw check to throwIfFailed and the last
re-derived legacy shape to compose toLegacyResult, which makes the epic's
none-remain claim true rather than nearly true. toLegacyResult itself is not
widened -- eight callers depend on its shape and one consumer does not
justify changing a shared contract.

* fix(#3148): correct seam incoherence at the bound and a slow review-lane error path

Two real failures from the remote runner, both fixed at the cause.

The seam could return outcome TIMED_OUT together with exitCode 0. At the
exact bound spawnSync reports ETIMEDOUT while the child has already exited
with a real status, and toSeamResult classified on the error code while
passing status straight through -- an incoherent pair its own boundary test
was written to catch, and did. A status that is not null is direct evidence
the child exited on its own, so it now decides the outcome before the
error-code branches run. process-seam.cjs was deliberately untouched by every
earlier wave; this is a defect in the module itself, kept surgical, with a
unit test that fails against the old logic.

review-lane with an unknown subcommand fell through to its usage error only
after loading the capability registry and building a per-lane plan, which
spawns one child process per lane -- up to twelve. The error path took
~1288ms instead of ~119ms, and under bench load it outran a caller's spawn
timeout and was killed before writing anything, which is the empty stdout and
stderr CI saw. It now fails fast before any of that work begins.

This is the epic's first production change. It is user-facing, so it carries
a changeset rather than a no-changelog label.

* test(#3148): replace a real-race timeout test with a deterministic one

E9 raced git rev-parse against a 1ms bound and assumed git always lost. On a
warm container git finishes first, spawnSync returns status 0 with no error
at all, the seam correctly classifies EXITED, and gitOrThrow correctly does
not throw -- so the test failed on both lanes. A probe confirms a genuine
timeout always carries status null, so this was never the seam misbehaving.

Raising the bound would only lengthen the odds, which is the same defect with
better luck. The test now drives gitOrThrow against a stubbed runGit that
returns a synthetic TIMED_OUT result, so it asserts exactly what it always
meant to -- that a timeout propagates as a throw -- with no timing
dependence. Five consecutive runs are identical where the old one varied.

I wrote this test in Wave 0; it is a real-race test by construction and
CLAUDE.md says to replace those rather than re-run them.

* chore(#3148): backfill changeset PR number 3192

---------

Co-authored-by: sim <sim@local>
2026-08-07 21:03:50 -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