fix(procedures): gate messages resolve (#28), latent SIGPIPE (#46), scout repo resolution (#48) - #50
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…ge (closes #28) Both gates denied while naming a bare `Skill(how-do-i)` / `Skill(am-i-done)`. Shipped in a plugin the invocable names are namespaced, so the agent was sent after a skill it could not call: deny, retry, deny, with no exit. hooks/turn-state-record.sh already accepted both the bare and the `procedures:`-scoped form, so recognition was never the gap — only the messages were. Verified both forms still satisfy each gate rather than assuming it. Second half: a plugin can be installed hooks-first (the 2026-08-07 wedge). Both gates now refuse to DENY when the skill they name is not on disk beside them, releasing through the existing recorder with why:"skill-unresolvable" instead. JUDGEMENT — that check is a PROXY, not a detection, and the distinction is load-bearing. A hook is handed no capability manifest: nothing in the payload or the environment enumerates the session's registered skills, so "can the model invoke this right now" is not answerable from inside a hook. The file check is deliberately one-sided — absence proves the skill cannot be invoked, presence proves nothing about registration — so it fires only when we are certain and adds no new way to wedge. It does not catch skills present on disk but disabled in session config. One builtin test, no fork. Tests: 7 added to hooks/tests/gates.bats, red first. Mutation-checked — reverting the messages reddens the two message tests, deleting the check reddens the two fail-open tests, and making the check fire unconditionally reddens the "does not make a healthy gate inert" guard.
…oses #46) Same defect that broke --cat on the live corpus (002f95a), still latent in three places. `grep -q` exits on its first match, closing the pipe under a printf that is still writing; printf dies of SIGPIPE and pipefail reports 141 for the PIPELINE — on a SUCCESSFUL match. All three sites read that as "no match" and take the wrong branch: lint-frontmatter.sh:188 a present required key is reported MISSING lint-frontmatter.sh:204 a principle WITH enforced_by: is warned aspirational enforce-frontmatter.sh:37 a non-lintable target is BLOCKED as a violation Replaced with the zero-fork `case` haystack from scripts/query-records.sh. Two conditions are needed, which is why no existing test caught it: input larger than the pipe buffer (fixtures are ~100 bytes, so printf's single atomic write completes before grep can exit), AND an early match — a match on the last line forces grep to read everything, so no SIGPIPE occurs. Required keys sit at the top of a frontmatter block, so real inputs match early. Tests: hooks/tests/frontmatter-sigpipe.bats, 3 tests over a >64KiB corpus, red first — the linter reported a valid record as missing all six keys. Each site mutation-checked back to the pipe form independently.
…wd (closes #48) The scout answered PR/issue questions against whatever repo the shell happened to sit in, silently. A repo-scoped goal resolved against the wrong repo is the most confident wrong answer this loop produces: every command verbatim, every path resolving, all of it about somewhere else. Adds step 0 to the retrieval loop in both prompt files: when the goal is repo-scoped, take the first source that answers — goal text > held context > working directory — and state which on a new `REPO:` line in the output block. Never silently assume cwd. Costs no Bash call: it is reasoning over text already held, not a lookup, so the 3-4 call budget from #45 is untouched. Both files change together per the "Fork-path agent prompt" adaptation class — the fork reads SKILL.md, the direct Agent() spawn reads the agent file. Tests: 3 added to hooks/tests/scout-retrieval.bats, red first, pinning each file independently. The precedence assertion is made on the FLATTENED text after a mutation caught the first draft: a line-by-line check read whichever mention came first on its own line, so wrapping "the working / directory" across a break hid a fully inverted list. Also mutation-checked by reverting both files to HEAD and by dropping only the REPO: line.
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📝 WalkthroughWalkthroughThe changes update plugin-scoped gate skill references, add fail-open handling for unavailable skills, add repository resolution to retrieval procedures, and replace pipefail-sensitive frontmatter checks with Bash matching and regression tests. ChangesProcedure gate and retrieval updates
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🟡 Moderate · up to The PR improves gate fail-open behavior, SIGPIPE handling, and repository selection, but repo-scoped retrieval can still select a stale repository from an earlier goal, potentially sending work to the wrong repository; merge should wait for that guard or explicit owner acceptance. Possibly related PRs
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
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drewdrewthis
marked this pull request as ready for review
August 14, 2026 21:07
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Inline comments:
In `@plugins/procedures/agents/procedure-scout.md`:
- Around line 80-83: Update repository selection in
plugins/procedures/agents/procedure-scout.md lines 80-83 and
plugins/procedures/skills/how-do-i/SKILL.md lines 66-69 so prior digests are
used only as search context unless their repository is explicitly confirmed for
the current goal; prevent stale digest repositories from determining REPO, while
retaining the existing precedence for explicit goal text and valid current-goal
context.
- Around line 84-86: In plugins/procedures/agents/procedure-scout.md lines
84-86, remove the rationale about an incorrect working directory affecting
commands and paths, while retaining the source order, source reporting,
no-silent-cwd rule, and no-Bash-call constraint. Apply the same concise
operational wording in plugins/procedures/skills/how-do-i/SKILL.md lines 69-72;
both sites require direct changes.
In `@plugins/procedures/hooks/tests/scout-retrieval.bats`:
- Around line 368-394: Strengthen the repository-contract assertions in the test
for both prompt files: verify that the numbered repository-resolution step 0
appears before the --recall retrieval step, anchoring checks to the relevant
resolution and recall sections rather than unrelated first occurrences. Update
the REPO: assertion to require the complete output template, including the [from
goal text], [from held context], and [from cwd] source annotations.
In `@README.md`:
- Around line 126-138: Condense the gate documentation to state that messages
use the plugin-scoped names Skill(procedures:how-do-i) and
Skill(procedures:am-i-done), either invocation form satisfies the gates, and an
unreadable skill file records skill-unresolvable while failing open. Update the
gate rows near the top of README.md to use these same plugin-scoped names.
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📒 Files selected for processing (11)
README.mdplugins/procedures/agents/procedure-scout.mdplugins/procedures/hooks/am-i-done-gate.shplugins/procedures/hooks/enforce-frontmatter.shplugins/procedures/hooks/how-do-i-gate.shplugins/procedures/hooks/lib/gate-failopen.shplugins/procedures/hooks/tests/frontmatter-sigpipe.batsplugins/procedures/hooks/tests/gates.batsplugins/procedures/hooks/tests/scout-retrieval.batsplugins/procedures/scripts/lint-frontmatter.shplugins/procedures/skills/how-do-i/SKILL.md
…ngs, 0 declined)
Stale-digest risk in the repo-resolution step, rationale prose in two
prompt files, repo-contract assertions weaker than the contract they
pin, and a README section grown past its operational content.
[1] Scoped "held context" to the CURRENT goal in step 0 of both prompt
files. Unscoped, a digest from an unrelated prior goal could supply
the repo — a stale answer that still reads as fully sourced. A
digest from another goal is search context, not a repo source.
[2] Dropped the rationale sentences from the same step in both files.
Prompt text is operational; the "most confident wrong answer"
argument and the commands/paths elaboration explained a rule that
states itself. Kept: source order, the REPO: line report,
never-silently-assume-cwd, costs-no-Bash-call. Identical wording in
both files.
[3] Strengthened the repo-contract tests — the same weakness class as
the earlier M7 catch. The existence checks proved step 0 was
somewhere in the file, not that it ran before retrieval, and a
`^REPO:` prefix match would have stayed green with the source
annotation stripped off the template. Now: a prefix-index assertion
that repo resolution precedes the first `--recall` (which is the
retrieval step in both files), the REPO: template asserted as the
line it actually is, and each of the three sources pinned
individually.
[4] Condensed the gate-vendoring README section to its operational
contract, 14 lines to 6, and scoped the two gate rows that still
read Skill(how-do-i) / Skill(am-i-done). Those rows were not false
— turn-state-record.sh:33 accepts both forms, so the bare name does
satisfy the gate — but they named the form the gate messages no
longer use.
Mutations, each reverted byte-identical:
N1 step 0 relocated after the --recall step -> not ok 24
N2 source annotation stripped from REPO template -> not ok 25
N3 held context unscoped from the current goal -> not ok 24
Suite: 316 passing, 0 failing.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Review verdict: READYReviewed at:
Verdict is prose, not a GitHub approval. Merge is held for the repo owner. |
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Fix round: gate messages (#28), latent SIGPIPE (#46), scout repo resolution (#48)
Three independent small bugfixes on the
proceduresplugin, one atomic commit per issue (cherry-pickable/revertable independently).Commit 1 — closes #28: gate messages name a resolvable skill, and never wedge
how-do-i-gate.sh/am-i-done-gate.shblock messages now nameSkill(procedures:how-do-i)/Skill(procedures:am-i-done)— the plugin-scoped forms that actually resolve when the skills ship inside the plugin. Recognition needed no change:turn-state-record.shalready accepts both bare and namespaced invocations (proven by two tests that pass pre-fix, isolating the message text as the sole defect).[ -r ../skills/<name>/SKILL.md ]before denying; absence →gate_failopen <gate> skill-unresolvable(new closed-setwhy). The check is deliberately one-sided: absence proves unresolvable, presence proves nothing (a skill on disk but disabled in session config is not caught — stated in code comment + README class). Cost: one builtin, no fork. In the Stop gate it runs beforets_mark am_i_done_asked, so a release never records an ask that never happened.# PLUGIN ADAPTATION:markers at both divergence points; new vendoring class in root README.Known residual for review: README line ~131 records that
tool_input.skillarrives as the bare name under--plugin-dir. We read that as payload shape (harness strips the namespace), not invocation syntax — the recorder accepts both forms either way. If some install resolves only the bare invocation, naming the scoped form in the message would be the mirror-image wedge; flagging rather than silently assuming.Commit 2 — closes #46: three latent SIGPIPE-under-pipefail matches
lint-frontmatter.sh:188,204andenforce-frontmatter.sh:37usedprintf | grep -q: grep exits on first match, printf takes SIGPIPE, pipeline reports 141 on a successful match once output outgrows the pipe buffer. Same class as the--catlive bug fixed in #45 (002f95a); same fix — zero-fork pure-bashcasehaystack match.Red-first evidence: with a >pipe-buffer corpus and an early match, the old code reported a perfectly valid record as missing all six required keys. The repro requires large input and an early match (a last-line match lets printf finish — no SIGPIPE); both conditions documented in
frontmatter-sigpipe.bats.Commit 3 — closes #48: scout resolves the target repo instead of assuming cwd
Live incident: a how-do-i goal about a
claude-pluginsPR was scouted againsttitwbecause the goal omitted the repo and the scout anchored on cwd. New Step 0 inSKILL.md+procedure-scout.md: for repo-scoped goals, resolve repo from goal text > held context > cwd, state the choice on aREPO:line, never silently assume cwd. Costs no Bash call; the #45 recall-first ordering and 3-4-call budget block are pinned intact by test.Tests
Suite: 303 → 316 (+3 SIGPIPE, +7 gates, +3 scout), 0 failures — verified by the lead re-running
bats hooks/testsindependently of the implementing agent.plugins/delegationbaseline 61/10 untouched.Mutation checks: 8 mutants (M1–M3 per-site SIGPIPE reverts, M4 message revert, M5 delete resolvability check, M5b make fail-open fire unconditionally — proves a healthy gate can't be made inert, M6 prompt revert, M7 precedence inversion, M8 drop
REPO:line), all red, sources restored byte-identical (cmp). M7 initially survived — the line-based test pinned word presence, not precedence order; assertion rewritten against flattened text with prefix-length indexing before shipping.How I can prove I was successful
bats hooks/tests→ok 316, exit 0!= *"Skill(how-do-i)"*)🤖 Generated with Claude Code
Summary by CodeRabbit
New Features
Bug Fixes
Tests