Commit Graph

8 Commits

Author SHA1 Message Date
Tom Boucher
9ee6d54cc3 fix(#4306): extend fault-injection fd-swallow fix across the whole suite (#4308)
* fix(#4306): forward real bytes through io.test.cjs's fault-injection mocks

The bug #1008 fault-injection tests mock fs.writeSync scoped only by file
descriptor. On their "success" arms (the retry-after-EAGAIN/EINTR call, and
the short-write simulation) they fabricated a return byte count without ever
calling the real writeSync -- the bytes went into a local array and nowhere
else.

node:test's process-isolation runner (default on Node >= 22) reads each test
file's own stdout to parse its child-to-parent result protocol. If the
runner's own reporter write for an adjacent test lands on fd 1 while one of
these mocks is installed, that write was silently swallowed instead of
reaching the real pipe -- observed in CI as "Unable to deserialize cloned
data" (a corrupted/truncated byte stream on the parent's read side), not a
thrown exception.

Every "success" arm now forwards the real bytes to orig()/restore() instead
of fabricating a return value, so anything else sharing the fd during the
mocked window still gets its bytes delivered for real. writeAllSync (the
only production caller reaching this mock) always passes a Buffer, so the
forwarded calls use the buffer-form fs.writeSync overload unambiguously.

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

* fix(#4306): extend fault-injection fd-swallow fix across the whole suite

The originally-fixed instance (tests/io.test.cjs) was one occurrence of a
copy-pasted defect: mocked fs.writeSync arms fabricated a return byte count
without ever forwarding the call to the real fs.writeSync, silently
discarding bytes. Under node:test's process-isolated runner, the parent
reads the child's real stdout to parse v8-serialized report frames
interleaved with plain output (confirmed against node's own
lib/internal/test_runner/runner.js and a matching upstream issue,
nodejs/node#64061) — a swallowed write on that fd corrupts the parent's
parse ("Unable to deserialize cloned data").

Adds a shared, safe capture helper to tests/helpers.cjs, captureFdSync(fd,
fn): it always forwards every write to the real fs.writeSync first, then
records only the observed fd's bytes, sliced by the real return count (not
the requested length), decoded once via Buffer.concat so a short write
can't split a multi-byte codepoint across two decodes.

17 test files migrate their local copy of the unsafe mock to this shared
helper. tests/worktree-base-ref.test.cjs keeps a narrower in-place fix
instead (it needs to record every fd a write touched, which the shared
helper doesn't expose).

tests/io.test.cjs gets two follow-up correctness fixes on top of the
already-committed forwarding fix: the EAGAIN/EINTR/short-write arms now
derive their recorded chunk from the real return count everywhere
(including the string-form overload), and the short-write test no longer
forces a Buffer-shaped truncation call onto a string-form write that could
land on the same fd.

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

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-04 23:54:02 -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
0xdhx
c516c39b33 fix(#3203): stop npm-global installs validating bundled agents against themselves (#3229)
* fix(#3203): stop npm-global installs validating bundled agents against themselves

getAgentsDir's claude branch derived the agents directory from __dirname,
which is correct for repo runs and runtime-config-dir installs (where
<root>/../agents IS the user's agents dir) but on an npm-global install
resolves to the package's own bundled agents/, so checkAgentsInstalled
validated the package against itself and agents_installed could never be
false. The new-project and new-milestone halt/warn gates were silently
dead for npm-global users.

Keep the install-relative path for the shapes where it is correct, but
when it lies inside a node_modules tree — the provably self-validating
case — resolve getGlobalConfigDir('claude')/agents like every other
runtime, honouring CLAUDE_CONFIG_DIR. GSD_AGENTS_DIR stays priority 1.
Repair the doc comment that asserted the __dirname form was correct for
both install shapes.

Regression test mirrors the published npm-global layout (package under
node_modules with a complete bundled agents/) and pins the resolved
directory plus the issue's negative control (one agent missing from the
config dir → agents_installed:false). Verified red against pre-fix code,
green post-fix; the repo-layout W010 health test stays green.

* chore(#3203): set changeset fragment pr to 3229

* docs(#3203): describe the node_modules guard as lexical, in CONTEXT.md and at the call site

The Agent Install Check Module glossary entry asserted that Claude resolves the
agents directory `__dirname`-relative unconditionally. That is the premise this
PR falsified: on an npm-global install the install-relative path resolves to the
package's own bundled `agents/`, so the check validated the package against
itself and `agents_installed` could never be false.

The inline doc comment above `getAgentsDir` was repaired with the fix; this
external predicate was left behind and has been false since. CONTRIBUTING.md's
`Fixed`-fragment docs exemption names this case explicitly — "Edit the docs
anyway if a fix corrects something the docs got wrong."

Both surfaces now describe the guard as what it is: an exact, case-sensitive
path-segment test that TARGETS those layouts rather than detecting them, so
neither claims more certainty than the predicate has. The call-site comment
carried the same conflation the glossary did. A path merely carrying a directory
of that name resolves the same way — the edge already disclosed on this PR — and
a non-empty GSD_AGENTS_DIR overrides it.

Comment-only in `src/`; no behaviour change.

`CONFIG.LOCATION.SEAM.two-families` needs no change: `GSD_AGENTS_DIR ->
getAgentsDir priority 1` is still accurate.

---------

Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
2026-08-12 20:45:00 -04:00
Tom Boucher
7a7bf19fc1 enhance(#2872): record scope and runtime in the install manifest (#3323)
* enhance(#2872): record scope and runtime in the install manifest

gsd-file-manifest.json gains manifestVersion, runtime and scope, and a new
read-only Installed Surface Resolver Module reads both install scopes for a
runtime in one call -- the first code path in the repo that does.

Phase 3 of epic #2866 (ADR-2866). Blocks Phase 4 (#2873), which resolves
#2218: the resolver's shadowedBy field is that defect expressed as a value
for the first time. It ships computed-and-unread here.

Installed-ness is decided by manifest PRESENCE, never by the new fields, so
a manifest written by an older GSD stays fully functional and no user needs
to reinstall. Recorded runtime/scope are corroboration: a disagreement with
the probed config dir is reported as declaredScopeMatchesProbe: false, never
silently corrected.

readInstallManifest is widened additively -- version/timestamp/mode/files
keep their exact names, types and meanings for all four existing callers.
manifestVersion is a new field rather than a reinterpretation of version,
which holds the package version and is read by the golden-parity fixtures.

Stems are derived from the installed manifest's own file keys, the inverse
of Phase 2's filename composition, guarded by a fast-check round-trip
property plus a kebab-case charset check so a crafted manifest key cannot
put a traversal segment, control character or ANSI escape into a trigger
that Phase 4 renders back to the user.

Also fixes two defects found while working:
- bin/install.js hardcoded manifestVersion: 2 while the reader owned
  MANIFEST_SCHEMA_VERSION = 2. Now single-sourced, with a parity test.
- docs/installer-migrations.md documented an install-state schema of five
  snake_case fields that have never been written; InstallState has only ever
  been { schemaVersion, appliedMigrations }. Corrected with a dated note.

Verification runs on the remote runner.

* fix(#2872): fold review findings from three independent engines

Standards axis:
- convert the manifest-schema suite from a hybrid setup(t) closure to
  beforeEach/afterEach (CONTRIBUTING.md:319-354 Pattern 1). The hybrid was
  neither approved pattern and a new test forgetting the call got no warning.
- SCOPE_ORDER was declared twice with no parity test -- this repo's recorded
  generative-fix-divergence class. Give the ordering one owner: install-scope
  exports it frozen, the layout module and the resolver both import it, and a
  test locks it against scopeRank so the constant and the ranks cannot drift.
- drop the defaultReadManifest passthrough (Middle Man).

Spec axis:
- add the VOLATILE_FILES exclusion test and source comment the acceptance
  table promised and did not deliver. gsd-file-manifest.json stays excluded:
  the new fields are deterministic, but timestamp -- the original reason --
  is unchanged.

Security axis:
- bound the reported manifest runtime at 64 chars, matching the
  truncatePostureValue convention already used in this subsystem. It reached
  declaredRuntime unbounded while the adjacent stems were gated by SAFE_STEM;
  an inconsistent posture on the same attacker-influenceable document. The
  charset stays ungated on purpose -- declaredRuntimeMatchesProbe needs to see
  the real value -- so Phase 4 must sanitize before rendering, recorded in the
  design's Known limits.

Both new parity tests were verified to FAIL when the two sides are made to
disagree, then pass again on revert. Verification runs on the remote runner.

* chore(#2872): backfill changeset pr number to 3323

* fix(#2872): give git fixture construction its own timeout class

PR #3323's full test (windows-latest, 22, shard 2/3) failed with

  gitOrThrow: 'git init' failed -- outcome=timed_out exitCode=null
  gitOrThrow: 'git commit --allow-empty' failed -- outcome=timed_out

from drift-detection.test.cjs's beforeEach, a file this branch never touched.
Every other lane passed the same commit, including windows-latest node 24 on
all three shards, and next is green.

Root cause is a bound sized for the wrong class. DEFAULT_GIT_TIMEOUT_MS is
15000 and its own comment scopes it to plumbing READS -- rev-parse, branch,
log -- against an existing repo. createFixture uses it for six sequential
repo-CONSTRUCTION spawns: init, three config writes, add -A, commit. init and
commit each write dozens of files, and on Windows every spawn is
Defender-scanned. Sibling tests in the failing block took 15.6-22.0s against
a 15000ms bound.

This repo already diagnosed this exact shape once: timeouts.cjs's
HOOK_FANOUT_TIMEOUT_MS records PR #3285 failing in the SAME job with the SAME
outcome=timed_out exitCode=null signature at the SAME bound while every other
lane passed, and concludes 'a bound sized for the wrong class, not a slow
machine'. It was fixed by splitting out a heavier class-norm at 60000. Same
remedy here: GIT_FIXTURE_TIMEOUT_MS = 60000, 4x the bound that failed and half
INSTALL_TIMEOUT_MS.

DEFAULT_GIT_TIMEOUT_MS deliberately stays at 15000 -- a blanket raise would
stop a genuinely hung plumbing read from surfacing fast.

Verified the value reaches the spawn rather than being an ignored option:
spawnSync was monkeypatched before requiring the fixture module, and all six
git construction calls were captured carrying timeout: 60000.

This branch's two new test files shift shard composition, which is how a
pre-existing fragility landed in the heaviest shard on the slowest lane.
Fixed here rather than deferred, per the no-defer rule.

Verification runs on the remote runner.

---------

Co-authored-by: sim <sim@local>
2026-08-10 15:50:55 -04:00
Tom Boucher
4a1ed2531f enhance(#3242): validate codex .toml model posture, not just presence (#3290)
* test(#3242): failing-first suite for the codex posture health-check

Specifies ADR-2313 D6 before the implementation exists, so the tests
bind to the contract rather than to whatever the code happens to do.

RED is established by construction, not by a remote run:
checkCodexModelPosture and POSTURE_REASON are absent from the compiled
lib today, so every row fails on the missing export. A remote checkpoint
here would prove only that the function is missing, which is already
known — so the run is deliberately deferred to the combined green
checkpoint rather than spent proving a tautology.

That makes the NEGATIVE PROOFS the rows that carry real signal. Every
positive row passes even for a naive implementation that greps
/model\s*=/ over the whole file. Six rows fail it: light-tier
service_tier/model_verbosity decoupling (#774), hand-added keys, a
commented pin, the model_verbosity key-prefix collision, the runtime
no-op ordering, and the headline case — a literal `model = "sonnet"`
inside the developer_instructions ''' block, which the emitter fills
with agent prompts that discuss models constantly.

Row 14's fixture was verified to discriminate before being written: a
whole-file scan matches it and a header-slice scan does not. Without
that check the test would pass trivially and prove nothing, which is the
vacuous-test failure this epic has already hit repeatedly.

Adversarial TOML fixtures are hand-authored against the real Codex shape
rather than generated by generateCodexAgentToml, per #2371 — a fixture
from the writer can only confirm what the writer already believed.

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

* feat(#3242): validate codex .toml model posture, not just presence

Implements ADR-2313 D6. checkCodexModelPosture is a new sibling export,
not a branch inside checkAgentsInstalled — that function carries 33
upstream dependents, cyclomatic 25, and sits in two traced process
flows, so it is deliberately left untouched.

It imports isAnthropicFlavoredModel from model-catalog, a genuine leaf.
That is what Phase 1's constant move bought: agent-install-check is
documented as pure read/verify and imports only leaves, so reaching the
rule through model-resolver would have dragged config-loader into it.

Reads liberally, judges strictly, and never guesses. Tolerates comments,
key order, whitespace, CRLF, and a BOM; anchors on full key names so
model_verbosity does not satisfy a `model` probe; treats extra
hand-added keys as none of its business, since the check is a predicate
on the two fields the posture owns rather than a whitelist over the
document. An unreadable file becomes a named violation and the loop
keeps going.

The scan covers only the header slice — the lines before the
developer_instructions ''' marker. The emitter writes agent prompts into
that block and GSD's prompts discuss models constantly, so a whole-file
scan reports violations for prose. This is the highest-risk defect in
the phase and the reason its fixture was verified to discriminate before
being written.

The non-codex short-circuit runs before any filesystem call, so a stray
.toml under another runtime is never inspected.

Wired through cmdValidateAgents as an additive codex_posture key, so a
violating install is visible from a command a user actually runs rather
than only from a library nothing calls.

Also fixes a test defect found while implementing: .gitattributes forces
`* text=auto eol=lf` repo-wide, so the committed CRLF fixture was
normalized to LF in the index — `git ls-files --eol` reported `i/lf
w/crlf`, the working copy being stale pre-normalization bytes. The CRLF
row was asserting against a file that could not survive a fresh clone.
CRLF is now derived at runtime, which puts it under the test's control
rather than git's, instead of adding a .gitattributes exception that
fights a deliberate repo-wide policy and that anyone could re-normalize.

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

* docs(#3242): document the codex posture check where a user will look

Three quadrants, filed by where the reader actually arrives.

How-to (recover-and-troubleshoot.md, under Install and update problems)
is titled by the SYMPTOM — "If Codex agents fail to spawn with a 400
about an unsupported model" — and opens with the verbatim error string.
Someone hitting this does not know the words "posture" or "ADR-2313";
they have a 400 in their terminal and will search for that.

Reference (COMMANDS.md) had no `validate agents` entry at all, though
sibling gsd-tools subcommands are documented. Adding user-visible output
to an undocumented command and then linking to it from the new how-to
would have left a dangling reference. The entry carries the
violation-reason table, since the frozen POSTURE_REASON enum is the
machine-readable contract a reader needs rather than the prose.

Both surfaces state that presence and posture are separate verdicts — a
missing agent lands in `missing`, never as a posture violation. That is
a deliberate design decision and would otherwise be invisible to someone
watching one command emit both.

Explanation stays in ADR-2313, which already covers D6 and the
liberal-parse/strict-judge boundary. Pointing at it beats duplicating it
into COMMANDS.md and creating two copies to drift.

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

* fix(#3242): close two false negatives in the posture scan

Both found by an isolated reviewer and reproduced before fixing. Both
made the check report clean when it was not — the worst direction for
this function, since the how-to tells users an empty violations list
means the install is posture-clean.

A quoted TOML key was never matched. `"model" = "sonnet"` is legal TOML,
but the key pattern required a bare identifier, so the pin was silently
invisible. Bare, "double" and 'single' quoted forms now normalize to the
same key name.

The block marker was found by unanchored whole-content search and used
to truncate the header. A `description` value merely containing the
literal text `developer_instructions = '''` truncated the scan before a
real pin, and a user who hand-reordered `model` to sit after the block —
still legal TOML — was never scanned at all.

Fixed by changing the strategy rather than the regex: find the block's
range, anchored at line start, and scan every line OUTSIDE it. That
covers both failures and is strictly more correct than truncation, while
still never reading prompt prose. An unterminated block excludes the
rest of the file, which fails toward a false positive — the safe
direction, since misreading prose as a pin wastes a user's time while
the alternative hides a real one.

Also corrects two overclaims of mine. The how-to named "v1.11", a
version that does not exist — package.json is 1.10.0 and unreleased — so
it now describes the boundary by behavior and links the ADR. And the
test matrix asserted that a naive whole-file scan "fails exactly rows
12,13,14,15,16,25"; the reviewer computed that rows 12, 13, 15 and 16
produce the correct result against that baseline too. They guard real
but *different* mistakes, and the matrix now says which one each catches
instead of attributing them all to the header-slice defect.

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

* fix(#3242): skip symlinked agent files instead of following them

Security review finding. The scan listed entries with readdirSync and
read them with readFileSync, which follows symlinks — so a symlink in
the agents directory pointing anywhere would have its contents read, and
any line matching the model pattern echoed into cmdValidateAgents'
output through the `value` field. A read-and-echo primitive on an
arbitrary path.

It needs write access to the agents directory, so it crosses no new
trust boundary today. Fixed anyway, for two reasons.

This repo already does it correctly next door: cmdEffortSync filters
with lstatSync().isFile() and the comment "Skip symlinks — only write
regular files to avoid clobbering symlink targets." Being inconsistent
with a sibling in the same subsystem IS the defect.

And Phase 3 (#3243) extends that same cmdEffortSync to WRITE these
files. Establishing symlink-following as the house pattern for Codex
.toml handling here would hand Phase 3 a worse starting point while it
writes rather than reads.

Skipped silently rather than reported, matching the sibling: a symlinked
agent file is a structural install choice, which checkAgentsInstalled
owns, not a model-content posture defect. An lstat that itself throws
excludes the file rather than crashing the scan.

That does narrow the guarantee slightly, so the how-to now says an empty
list means every REGULAR .toml is clean, and tells anyone symlinking
their configs to check the targets by hand. Claiming a clean bill of
health over files the check declined to open would be the same kind of
false confidence the two false negatives above produced.

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

* chore(#3242): backfill changeset pr number (#3290)

---------

Co-authored-by: sim <sim@local>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-08-09 21:50:49 -04:00
Daniel Einspanjer
f0ff23635e fix(#2602): discover project-local Codex agents (#2623)
* fix(#2602): discover project-local Codex agents

- Select an existing local Codex agents directory before global fallback
- Prove init reports the canonical local installation through compiled CJS

* test(#2602): lock Codex agent precedence

- Cover override, local authority, global fallback, and runtime compatibility
- Exercise installed state through the compiled resolver

* fix(#2602): resolve local Codex agent skills

- Pass the canonical project root to the non-Claude persona fallback
- Cover nested-Codex fallback and Claude compatibility through the CLI

* test(#2602): cover local Codex validation status

- Assert emitted validate and health commands use the project-local install
- Preserve empty local-directory authority beside complete global agents

* fix(#2602): align validation with local Codex discovery

- Pass the resolved runtime and project root to health W010
- Resolve the validate-agents runtime before checking installation status

* test(#2602): cover local Codex docs status

- Assert docs-init reports an authoritative empty local install as unhealthy

* fix(#2602): align docs with local Codex discovery

- Pass the resolved runtime and canonical project root to the shared agent checker

* fix(#2602): honor agent-skills runtime override

- Resolve agent-skills fallback runtime through the canonical project resolver
- Cover conflicting config and GSD_RUNTIME values through the emitted CLI

* fix(#2602): ignore non-directory local agents paths

- Treat only a local Codex agents directory as authoritative
- Cover regular-file fallback through the emitted install checker

* chore(#2602): add changelog fragment

- record the user-visible local Codex agent discovery fix for PR #2623

* fix(#2602): align local agent discovery with runtime policy

- Resolve Codex's local config directory through the canonical runtime policy
- Use test-managed cleanup for local-agent discovery coverage

* fix(#2602): discover local agents across runtimes

- Prefer manifest-backed project-local installs for non-Claude runtimes
- Respect runtime-specific local install roots and preserve global fallback behavior
- Cover native, partial, cross-runtime, and project-root local discovery

* fix(#2602): preserve agent discovery fallback

- Fall back globally when local-install probes fail
- Document and test symlink rejection
- Align the changeset with repository format

* fix(#2602): reuse local directory policy

- Resolve runtimes without local config through the canonical sentinel
- Document the manifest gate and refresh the context index

---------

Co-authored-by: Daniel E. <daniel.e@teachingstrategies.com>
Co-authored-by: Rezolv <dave@sienkowski.com>
2026-07-31 21:20:46 -04:00
Tom Boucher
54420bae9e refactor(#1277): T1 — decouple agent-install-check + git-base-branch from the core spine (#1280)
First leaf-migration tranche of epic #1267 (after T0 #1268). Migrate the
via-core callers of the two leaves T0 created to import from the leaf
modules directly, and stop core re-exporting their symbols:
- checkAgentsInstalled: docs.cts, verify.cts, init.cts -> agent-install-check.cjs
- gitWorktreeInfoInternal: init.cts -> git-base-branch.cjs
- getAgentsDir had no external via-core caller (internal to the leaf)

core no longer re-exports getAgentsDir / checkAgentsInstalled /
gitWorktreeInfoInternal; the now-unused agent-install-check + git-base-branch
requires are dropped from core; the shim-identity assertions for these are
deleted (behaviour tests retained). Convergence lint stays green (0 new).
No behaviour change.

Closes #1277

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-15 15:46:41 -04:00
Tom Boucher
48d9cec6fe refactor(#1268): re-home core re-export-spine squatters + migration-convergence lint (#1272)
Re-home the 6 implementation functions squatting in the core.cjs re-export
spine (ADR-857) into the modules whose interface they belong to, with core
re-exporting them BY REFERENCE so all 32 callers + the shim-identity tests
keep resolving unchanged:
- worktree-safety: resolveWorktreeRoot, pruneOrphanedWorktrees
- git-base-branch (broadened to the Git Query Module): gitWorktreeInfoInternal
- agent-install-check (new leaf): getAgentsDir, checkAgentsInstalled
- delete the _resetRuntimeWarningCacheForTests wrapper; consumers use a
  shared resetRuntimeWarningCaches() helper in tests/helpers.cjs

Add scripts/lint-core-spine-imports.cjs (migration-convergence lint with a
30-importer allowlist, wired into lint:ci) so the staged spine retirement
provably converges: CI fails on any new ./core import. Register the new
generated agent-install-check.cjs in eslint-ignore + .gitignore +
INVENTORY-MANIFEST.json.

No behaviour change. First tranche (T0) of epic #1267.

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-15 15:08:58 -04:00