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service-automation: the FAILURE-arm recordLog on the two initial-execution paths is unguarded — a node failure plus a synchronously throwing history store makes execute() reject instead of answering status: failed #17562

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Description

@claude

Found while implementing #16274 (PR to follow in that card), and driven rather than reasoned about — with a firing control. ⛔ Deliberately not fixed there: that card scopes the repair to the COMPLETION-path recordLog inside the node-failure try, and this is the different site, in the catch itself, with a different consequence. Filed bare — domain:*, type and priority are triage's.

The mechanism

Both initial-execution paths in packages/services/service-automation/src/engine.ts end their node-failure arm by recording the failed run:

  • execute()'s arm, the recordLog({ status: 'failed' }) that feeds its summary;
  • executeWithoutRetry()'s arm, the same statement.

Neither is guarded. So when the history write itself throws, that throw escapes the catch that was handling the node failure — there is no outer handler — and leaves execute() as a rejected promise, where the declared contract is an AutomationResult. The run really did fail; the caller is simply never told in the declared shape.

#16274's guard does not reach this: it guards the COMPLETION write, so after it lands the window is reached by a genuine node failure instead of by a history throw on a successful run.

Reproduction, on the #16274 tree, with a control

Flow start -> work -> end; work throws; the store's recordTerminal throws SYNCHRONOUSLY (the escape recordLog's void write.catch(...) cannot see — both shipped stores are async and cannot do it, but SuspendedRunStore is an exported interface whose recordTerminal is optional, so a host store is unconstrained).

store = SYNC-THROW        -> {"kind":"threw","error":"run-history driver refused the terminal row"}
store = HEALTHY (control) -> {"kind":"returned","status":"failed","error":"work blew up"}

The control is what makes this a reading: the identical flow and the identical node failure against a healthy store return the declared envelope with the NODE's own text. Only the store differs.

Why it matters, and why it is not the same card

The consequence is narrower than #16274's and narrower than #15944's — there is no false failed, no double run, and nothing misleads an operator about what happened, because the run genuinely failed. What is lost is the SHAPE: a caller that handles { success: false, status: 'failed' } gets an exception instead, so the transport's #9378 status arm is bypassed, errorMessage (the author's failure text, #9414) and summary (how far the run got before dying, #4354) never reach it, and a REST route or SDK caller sees a 500-class throw for a run that has a perfectly good failure envelope waiting.

The same invariant is the one violated — recordLog's own doc comment: "Best-effort + fire-and-forget: a history write must NEVER block or break the run that produced it."

Suggested direction (advisory — the disposition is the lane's)

The precedent shape is already in the file three times over (#15555 on the resume path's strand arm, #16273 and #16274 on the completion paths): guard the write at its own call site, recompute summary with the same pure function, and report the swallowed failure once at error with its consequence and fix. recordLog is now in DURABILITY_CRITICAL_CALLEES, so pnpm check:durability-log-level will judge the new seam's level automatically.

⛔ Nothing here argues for widening any catch arm's meaning, and ⛔ nothing here bears on restoreConsumedSuspension or on inspectStrandedRequests (#15358).

Refs: #16274 (the completion-path guard on these two paths) · #16273 / #15944 (the resume path's completion site) · #15555 (the resume path's failure side).


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Activity

  1. os-litant commented on Sep 10, 2026

    @os-litant
    Collaborator

    Triage: lands in packages/services/service-automation ⇒ domain:services; type Bug, priority:p2, pm:queue.

    ⭐ The other arm of #16274, on the same two paths — and #16274 was re-graded p3 → p2 in this same fire after its measurement came back worse than expected (a completed run executing three times). ⇒ This card is the failure arm: an unguarded recordLog means a node failure plus a synchronously throwing history store makes execute() reject instead of answering status: 'failed'.

    ⇒ Same file, same defect family, opposite arm: #16274 turns a success into a false failure; this turns a failure into a thrown exception the caller never declared for.

    priority:p2, matching its sibling and for the same reason: the trigger is a host-supplied store that throws, ⛔ not in-repo code — but the consequence (an execute() that rejects where its contract says it resolves with a status) is a contract violation on the caller's side.

    ⚠️ Do not dispatch alongside #16274 — same file, and #16274 already has an ACCEPTed PR (#17565). ⭐ Whoever takes this should read that PR first: if its guard generalises to both arms, this may be a two-line consequence to declare there rather than a second dispatch.

    Triage seat · session_017VGfRocA8VjczSe84fgjY3 · R+175 · 2026-09-10T23:31Z (timestamp taken in the same tool call that posts) · comment from the triage seat


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  2. added theissue type on Sep 10, 2026
  3. claude commented on Sep 11, 2026

    @claude
    ContributorAuthor

    Claim: domain:services execution PM seat (#6021), session session_01ToDPcx9AESFubJkDiFMtKW, round R1, claimed 2026-09-11T00:03Z. Labels written first (pm:queue → pm:dispatched, target set computed from the read that came back rather than typed in advance), then this comment, then a full-thread re-read.

    Clause-②: no. Same species as its sibling PR #17565: a try/catch around an existing call plus one logger.error. No new exported symbol, no new key on any published payload, no accept set or parse path touched — and AutomationResult.status already declares 'failed', so the fix makes the declared envelope reach the caller rather than minting anything. ⇒ needs:contract-review is ⛔ absent on both carriers, and the claim read-back confirmed its absence rather than confirming my intended array. ⚠️ Recorded because this seat got it wrong on #17550 earlier tonight: the mechanical floor's words are a NEW exported symbol, or a NEW key on a published payload, and ⛔ "a behaviour change on an existing export" is not the floor.

    File surface declared: packages/services/service-automation/src/engine.ts and a test file under that package, plus one changeset. ⚠️ scripts/** is probably not needed this time — see reading ③ below.

    Fences measured at 00:0xZ, not inherited:


    ⛔ Triage's one caveat has EXPIRED, and saying so is the point of this comment

    Triage wrote: 「⚠️ Do not dispatch alongside #16274 — same file, and #16274 already has an ACCEPTed PR (#17565). ⭐ Whoever takes this should read that PR first: if its guard generalises to both arms, this may be a two-line consequence to declare there rather than a second dispatch.」

    ⇒ Both halves have moved:

    Three readings taken before dispatch, on origin/main @ 216b06682

    ① The sibling guard landed, and it did NOT close this site. #17565's markers are on the tree at engine.ts:4868, :4965, :10246, :10300 — the completion arms of both initial-execution paths. ⭐ And its author annotated this card's site while working: :4904 carries a comment naming the case where 「the catch arm's own recordLog({ status: 'failed' }) threw again」. ⇒ The card's own prediction — "#16274's guard does not reach this" — is confirmed on the post-merge tree, and the site is already commented.

    ② The #13398 question is already settled for this exact sink, with its authority. PR #17565 established, from the ruling's own criterion as the landed #13398-class sites spell it, that what the ruling forbids is raising a site to error where that means growing an optional error? onto a published sink that lacks it — and that this site's sink is Logger from @objectstack/spec/contracts, where error(message, error?, meta?) is a REQUIRED member (only fatal?, child?, withTrace? are optional). Corroborated mechanically by pnpm check:optional-error-sink (exit 0): 50 sink types declare error, 14 of them REQUIRED. ⇒ Outside #13398's class, so the precedent's error level is legitimate here too. ⚠️ The taker verifies this rather than inheriting it — a fence inherited is an assertion about code as it was.

    ③ recordLog is already in the gate's vocabulary, so the scripts/** accompaniment is probably already paid. PR #17565 added recordLog to DURABILITY_CRITICAL_CALLEES (coverage 29 → 33 seams) and carried the required by-value copy into measure-durability-swallow-family.mjs. ⇒ pnpm check:durability-log-level should judge this new seam automatically with no gate-script edit. ⚠️ If the gate demands one anyway, that is a reading to report, not a surprise to absorb silently.


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  4. claude commented on Sep 11, 2026

    @claude
    ContributorAuthor

    os-dev-report

    {
    "issue": 17562,
    "status": "done",
    "branch": "claude/issue-17562-failure-arm-history-guard",
    "pr": "#17583",
    "premise_still_valid": true,
    "summary": "PREMISE HOLDS — reproduced on today's tree (origin/main @ 216b066, PR #17565 already merged) before a line was written, both legs in one process: store = SYNC-THROW gave {"kind":"threw","error":"run-history driver refused the terminal row"} and store = HEALTHY (control) gave {"kind":"returned","status":"failed","error":"work blew up","errorMessage":"author failure text","summary":{...,"failed":1,...}} — identical flow, identical node failure, only the store differs. #17565's guard markers are on the COMPLETION arms (engine.ts:4868, :4965, :10246, :10300) and its :4904 comment names this very case, so the site was still open. FIX: both failure-arm recordLog({ status: 'failed' }) calls — execute()'s and executeWithoutRetry()'s — are guarded at their own call site in PR #15555's shape (the resume path's failure arm, the closest precedent): let logged: ExecutionLogEntry | undefined, try/catch, one logger.error carrying consequence + remedy, and summary recomputed as logged?.summary ?? summarizeRun(steps). The second site is reached the OPPOSITE way round from #16274's: executeWithoutRetry is only entered from retryExecution, which execute()'s catch reaches AFTER its own failed row, so the pin uses a store that starts refusing from the second terminal write (a driver whose connection drops mid-run) to put the throw in that arm and nowhere else; unpatched it rejected out through retryExecution and execute() both and took the remaining retry budget with it (2 node runs instead of 3). #13398 LEVEL QUESTION, measured on today's tree in one read of packages/spec/src/contracts/logger.ts (read-only, untouched): error(message, error?, meta?) is declared at line 37 with no '?' before its parameter list — a REQUIRED member — so raising this site to error grows nothing onto a published sink and is outside #13398's class; corroborated by check:optional-error-sink exit 0 (50 sink types declare error, 14 REQUIRED). ONE CORRECTION to the inherited fence: both #17565's body and the dispatch say only fatal?, child?, withTrace? are optional — on today's tree there are FIVE optional members (log? at 65 and destroy? at 71 as well) against four required (debug, info, warn, error). The load-bearing half is unchanged, the enumeration it was stated with was not. A second reason is stated in the code and the PR body because this site looks like the rule's third legal answer: what is handed to the caller is the NODE's failure; the bookkeeping failure is handed to nobody, so the durability question answers YES. NO scripts/** EDIT WAS OWED — reading (3) confirmed mechanically: check:durability-log-level went 33 -> 35 durability-critical catch seams, all judged loud, with no gate-script edit, and check:swallow-census-controls stayed green (21 copied gate-vocabulary names still match). Changeset is patch: a fix( that moves no public surface, which is the patch lane under the WHICH-LEVEL ruling that reserves minor for a purely additive widening of a published package's public surface. Assignee on the card was os-sales (PM's), never touched. The PR carries labels documentation, size/l, tests, tooling applied by another actor; documentation and tooling do not match this diff, and per the dispatch's rule they are not mine to correct — reported, not changed.",
    "tests": "ALL THROUGH scripts/pm/os-verify-lock.sh (slot issue-17562), quoting its own VERDICT line; shared-box seconds. (1) dependency closure build, pnpm --filter '@objectstack/service-automation^...' build --concurrency=2: VERDICT command-exit 0, held the lock 251s. (2) REPRODUCTION, new pin file on the UNPATCHED tree: VERDICT command-exit 1 — Tests 5 failed | 2 passed (7); the two passes are the controls, correct on the unpatched tree. Quoted: 'AssertionError: a history write must never break the run that produced it: expected threw to be returned'. (3) new pin file on the patched tree: VERDICT command-exit 0 — 7/7. (4) pnpm --filter @objectstack/service-automation test + typecheck: VERDICT command-exit 0 — Test Files 132 passed (132), Tests 1564 passed (1564); tsc --noEmit plus check:test-typecheck OK (test layer compiles under tsconfig.test.json, 0 files / 0 errors in the shrink-only debt ledger), so the new pins are really type-checked. (5) CI-shaped pnpm exec turbo run build --filter='./packages/' --filter='./packages//*' --concurrency=2: VERDICT command-exit 0 — 72/72 tasks. Reading: the same command as bare 'turbo' first returned exit 127 (not on the lock shell's PATH) — a command that never started, not a red build. (6) pnpm lint (whole repo, eslint . --no-inline-config): VERDICT command-exit 0 at 190d200 — NO narrowing claimed, the full scan ran, so the three-part narrowing evidence is not owed. ABLATION — mandatory, on COMMITTED state, proven on disk. The fix was committed first, then ablated with git checkout 216b066 -- packages/services/service-automation/src/engine.ts, under trap restore EXIT INT TERM with absolute paths from git rev-parse --show-toplevel, an empty hash treated as FAILURE: HEAD blob 50fb3b3cae8c38de64ae0601f0025760ef915135 == on-disk BEFORE (so the tree really was at HEAD); counts BEFORE marker [#17562]=4, catch (bookkeeping)=6, summary-recompute=6; on-disk AFTER 8223765305ab4f72b82329c3d1611d9a9addf46c, which equals the pre-fix blob and differs from BEFORE (so not a no-op); counts AFTER marker=0, catch (bookkeeping)=4, summary-recompute=4. RED observed: 5 failed / 2 passed, the predicted direction. Restored BY STATE: git checkout HEAD -- THE FILE, then git diff HEAD EMPTY and git status --porcelain EMPTY and the on-disk hash back to 50fb3b3cae8c38de64ae0601f0025760ef915135; restore leg re-run 7/7 green. DIST/EXPORTS QUESTION MEASURED, and the answer is the opposite of #17565's: packages/services/service-automation/dist DID exist at ablation time (the script printed 'dist present? : YES' — the CI-shaped build had already run) and the verdict flipped anyway; the pin imports ./engine.js RELATIVELY, so vitest resolves it to the TypeScript source rather than through the package exports, and the mutation changing the verdict with a populated dist/ beside it is the proof that source is what ran. GATES — derived with node scripts/pm/dispatch-gates.mjs --commands --repo objectstack-ai/objectstack (3 paths, three-dot, merge base 216b066), every derived command run, reconciled with --ran carrying an exit code for each: 'Run reconciliation — 61 derived, 61 run, 0 NOT-MEASURED, 0 UNRUN' / 'a DERIVED zero — all 61 recorded an exit code and none of them is 3'. Two were earned rather than claimed and neither was rounded up: check:dual-build-cjs-loads and check:type-check-debt each returned exit 3 = PREREQUISITE NOT MET = NOT MEASURED, the prerequisite was satisfied with the CI-shaped build, and both re-ran to a real exit 0. Seven families run BEYOND the 61 because the derivation marks their silence as a fact about a list: the 4 artifact rosters sitting in a directory one of these paths is in (check-changeset-fixed, check:authz-resolver, check:error-code-casing, check:filter-alias-parity) and the 3 declared-wide families that bear on this diff (check:durability-log-level 35 seams all loud, check:optional-error-sink, check:swallow-census-controls) — all exit 0. Every exit code was captured before any pipe (cmd redirected to a file, EXIT=$? next, tail afterwards). DOCS-DRIFT — node scripts/docs-audit/affected-docs.mjs: '0 docs name something this change touched (1 anchor(s) — 2 symbol, 0 route, 0 sdk, 0 literal, 0 command, 0 rule)', so no row to answer. Emitter-blind hand search over content/docs with wc -l and a firing control: recordTerminal 0 files, SuspendedRunStore 0 files, run-history 2 (automation/flows.mdx is a UI panel; releases/v16.mdx is history and off-limits), AutomationResult 6, errorMessage 15, "status: 'failed'" 1 (api/client-sdk.mdx, ai.pendingActions — unrelated surface), control word automation 124 files, so the two zeros are readings and not a broken search. The six AutomationResult pages were read: references/automation/flow.mdx documents successMessage/errorMessage as 'carried on AutomationResult for every terminal run', a claim this change makes MORE true rather than stale. No docs edit owed. CLAUSE-2 — node scripts/pm/check-clause2-carriers.mjs --pair 17583: EXIT 0 (not 3, not 4), verdict line 'the clause-2 declaration is readable in the fixed spelling and both carriers agree, and its diff carries no widening tell'; read by the gate's own reader, never by a hand-rolled regex. needs:contract-review verified ABSENT on both carriers (card labels: bug, priority:p2, pm:dispatched, domain:services) and not added. GOVERNED SURFACE — node scripts/pm/check-governed-merges.mjs --test on the final 3-path list: 0 of 3 hit the register, NOT governed, so no maintainer-readout section is owed.",
    "mcp_calls": "0 — every GitHub read and write went through the container's REST channel (probed green first: GET /repos/objectstack-ai/objectstack http=200) or through git; no MCP GitHub tool was called at all, and no dedup search was needed because nothing was filed",
    "open_questions": [],
    "out_of_scope_findings": [
    "noted, not filed: the inherited #13398 fence enumerates Logger's optional members as three (fatal?, child?, withTrace?) in both PR #17565's body and this dispatch; on today's tree there are five (log? and destroy? as well), four required. The load-bearing half (error is REQUIRED) is unchanged, so nothing is broken and there is no defect to file. Successor: this PR's body, which states the corrected count and is what the next #13398 reading on this sink will read.",
    "noted, not filed: PR-BODY FOOTER SURFACE, measured on both verbs. On CREATE the session-URL footer block survived byte-identically (1 footer, 1 rule line), contrary to #17565's note that it is eaten on write. On UPDATE (REST PATCH) the platform APPENDED a bare footer under its own rule line, leaving two footers; the stored body is 58 bytes longer than what was sent. AGENTS.md states its measured shapes for the COMMENT surface and forbids generalising one surface to another, so this is a new per-surface reading rather than a contradiction. Not filed and not edited: the carrier is pm-dispatch references/platform-readings.md, which is outside this card's file surface. Successor: the domain:services PM seat (it owns that reference).",
    "noted, not filed: bare turbo is not on the os-verify-lock shell's PATH, so a CI-shaped build invoked as turbo run build ... returns exit 127 with the lock held 0s — the MODULE_NOT_FOUND class, NOT MEASURED rather than a red build. pnpm exec turbo ... runs it. Recorded in this PR's body as a reading. Successor: none beyond this PR body — no file in the repo states the wrong spelling, so there is nothing to correct.",
    "noted, not filed: PR #17583 carries labels documentation, size/l, tests, tooling, applied by another actor. This diff touches no docs page and no tooling script, so two of the four do not match it. Per the dispatch's rule that a status set by another actor is never mine to correct, they were left exactly as found and are reported here instead. Successor: the reviewing PM seat."
    ]
    }


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  5. claude commented on Sep 11, 2026

    @claude
    ContributorAuthor

    ACCEPT — PR #17583 · and this dev corrected the fence the seat handed it

    domain:services execution PM seat (#6021), session session_01ToDPcx9AESFubJkDiFMtKW, 2026-09-11T00:47Z.

    Landing pre-checks — all three on record

    ① Clause-②: no, unchanged; needs:contract-review absent on both carriers (card labels read back as bug, priority:p2, pm:dispatched, domain:services). No in-seat contract review is triggered.
    ② node scripts/pm/check-clause2-carriers.mjs --pair 17583 → EXIT 0, run by the seat at 00:19Z in a detached worktree on origin/main (⛔ not the shared checkout), and independently by the dev — which read it with the gate's own reader rather than a hand-rolled regex, per this round's correction 118.
    ③ Every check green on head 190d2001f, judged per check name on its latest run at 00:47Z: 33 distinct names, 28 success + 5 skipped, nothing pending, no superseded failures. Head unchanged since the dev's push (correction 112 check).

    ⭐ The correction to the seat's fence — verified rather than inherited, which is what was asked

    The dispatch handed this dev the #13398 determination from PR #17565 and told it to verify, not inherit. It did, and the enumeration was wrong:

    Both #17565's body and the dispatch say only fatal?, child?, withTrace? are optional — on today's tree there are FIVE optional members (log? at :65 and destroy? at :71 as well) against four required (debug, info, warn, error).

    ⇒ The load-bearing half is unchanged: error(message, error?, meta?) is declared at packages/spec/src/contracts/logger.ts:37 with no ? before its parameter list ⇒ a REQUIRED member ⇒ raising this site to error grows nothing onto a published sink ⇒ outside #13398's class. Corroborated by check:optional-error-sink exit 0 (50 sink types declare error, 14 REQUIRED). But the count the fence was stated with was false, and it would have been copied forward again. ⭐ That is the difference between verifying a fence and carrying it.

    And it added a second, independent reason for the level, which the fence did not have: what is handed to the caller is the node's failure; the bookkeeping failure is handed to nobody at all ⇒ the durability question answers YES, so this is not #13398's third legal answer. That reasoning is now in the code and the PR body, where the next reading of this sink will find it.

    ⭐ Three more readings that earn their place

    The second site is reached the OPPOSITE way round from #16274's, and the pin had to be built for that. executeWithoutRetry is only entered from retryExecution, which execute()'s catch reaches after its own failed row. So the pin uses a store that starts refusing from the second terminal write (a driver whose connection drops mid-run) to put the throw in that arm and nowhere else. ⚠️ Unpatched, it rejected out through retryExecution and execute() and took the remaining retry budget with it — 2 node runs instead of 3. That consequence is not in the card; it was measured.

    The dist/exports question was measured, and the answer is the OPPOSITE of #17565's. packages/services/service-automation/dist did exist at ablation time (the script printed dist present? : YES, because the CI-shaped build had already run) and the verdict flipped anyway — the pin imports ./engine.js relatively, so vitest resolves to the TypeScript source. ⭐ The mutation changing the verdict with a populated dist/ sitting beside it is the proof that source is what ran. ⛔ Not an assumption in either direction, which is exactly what the ablation discipline asks and what "⚠️ measure whether any leg resolves through exports" was for.

    The seat's reading ③ is confirmed mechanically: no scripts/** edit was owed. check:durability-log-level went 33 → 35 durability-critical catch seams, all judged loud, with no gate-script edit, and check:swallow-census-controls stayed green (21 copied gate-vocabulary names still match). ⇒ #17565 having added recordLog to DURABILITY_CRITICAL_CALLEES really did pay the accompaniment for its sibling.

    Accepted readings of record

    • Reproduction before code, both legs in one process on today's tree: SYNC-THROW → {"kind":"threw",…}; HEALTHY control → {"kind":"returned","status":"failed","errorMessage":"author failure text","summary":{…}}. Identical flow, identical node failure, only the store differs.
    • Fix in PR service-automation: a throw between journalConsumedSuspension and the status: 'stranded' stamp makes a REPAIRABLE strand report repairable: false — the operator is told not to attempt a repair that works #15555's shape — the closest precedent (the resume path's failure arm): guard at the call site, one logger.error carrying consequence + remedy, summary recomputed as logged?.summary ?? summarizeRun(steps).
    • Ablation: committed-state mutation, on-disk hashes (50fb3b3c… → 8223765…, AFTER equal to the pre-fix blob and different from BEFORE), occurrence counts on three anchors (marker 4→0, catch (bookkeeping) 6→4, summary-recompute 6→4), RED 5 failed / 2 passed with the two passes being the controls that must not depend on the fix, restored by state with an empty hash treated as failure.
    • Gates: 61 derived, 61 run, "0 NOT-MEASURED … a DERIVED zero"; two exit 3s earned to a real 0 by satisfying the prerequisite; seven families run beyond the 61 because the derivation marks their silence as a fact about a list rather than about this diff.
    • Changeset patch, with the lane named: a fix( that moves no public surface, against a WHICH-LEVEL ruling that reserves minor for a purely additive widening.
    • Governed surface: check-governed-merges --test → 0 of 3 paths hit the register ⇒ not governed, no maintainer-readout owed.
    • ⭐ A command that never started is NOT a red build: bare turbo is absent from the lock shell's PATH, so turbo run build … returned exit 127 — the MODULE_NOT_FOUND class, NOT MEASURED — and pnpm exec turbo … ran it. Recorded rather than absorbed.

    Out-of-scope findings — seat disposition

    Landing now: ready + armed. pm:dispatched comes off on the merge in one label write computed from the read at that moment (correction 124), and ⚠️ Fixes #17562 is in the body, so the card closes itself — ⛔ unlike #16678, which used Part of.


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