[finding] the #13904 engine-slot repair is re-collapsed at `objectQLProvider`'s SECOND consumer — `GET /meta/object/:name/state/:field` answers 404 for a wired-and-failing engine

[os-litant]

Found while running the #14251 phase-1 consumer census (read-only). Recorded for triage; no severity asserted.

Measured by reading origin/main at a56baa2bdf. Located by symbol, not by line — the line numbers below are that commit's.

The shape

objectQLProvider has two consumers in packages/rest/src/rest-server.ts, and #13904 (PR #14250) repaired the slot for one of them:

consumer	line	how it reaches the provider
computeExecCtx, the authorization-input seam	2361	wiredEngineOrLoud(Boolean(this.objectQLProvider), ...) — keeps the two facts apart (#13476)
GET {basePath}/meta/object/:name/state/:field	7453	await this.objectQLProvider(environmentId).catch(() => undefined) — re-collapses them

The second one converts every rejection back into the same undefined a never-registered engine produces, three lines before the answer is chosen:

const ql = this.objectQLProvider
    ? await this.objectQLProvider(environmentId).catch(() => undefined)
    : undefined;
const schema = (ql as any)?.registry?.getObject?.(name);
if (!schema) {
    res.status(404).json({ error: { code: 'NOT_FOUND', message: 'Object not found' } });

⇒ on this route, an engine that was wired and failed to build and an engine that was never registered both answer 404 NOT_FOUND · "Object not found" — the same disguise #13476 measured at the package door (there it wore a 403), and the same one its sibling seam now answers 503 for.

Why this line is NEWLY load-bearing, and was not before

Before #13904 the shipped provider was try { ... } catch { return undefined; }, so it could not reject: the .catch at 7453 was dead code and the collapse happened one layer earlier. #13904 made the provider re-raise every unbranded rejection precisely so a consumer could see it. This consumer catches it back. So the repair reaches one of the slot's two consumers, and the other is unchanged by it.

⛔ Not a defect in #13904 — its card and its pins are scoped to the computeExecCtx seam, and they hold. This is the second consumer nobody enumerated.

A second, narrower observation at the same line

provider(environmentId).catch(...) attaches to the promise the call RETURNS, so it can only ever see a rejection. A host that wires a non-async provider — which the seam's declared type cannot prevent, and RestServer's constructor is the public wiring point — throws while the expression is still being evaluated, and the .catch is never reached. That is exactly the asymmetry seamOrUndefined was introduced to end (its docblock measures it at settingsServiceProvider: 200 when the provider was async, 401 when it was not).

Two provider call sites in rest-server.ts still carry the retired spelling:

• rest-server.ts:7453 — objectQLProvider (above)
• rest-server.ts:9286 — emailServiceProvider, in POST {basePath}/email/send

Every other provider call site in the file either goes through seamOrUndefined / wiredEngineOrLoud or wraps the call in a real try/catch, which sees both fault shapes.

⚠️ Neither is reachable from the shipped wiring today: both providers in rest-api-plugin.ts are declared async. This is residue of the #13280 class at an embedder-reachable seam, not a live wire defect.

Scope

Not folded into anything. #14251 phase 1 is read-only, and its file surface is the provider closures in rest-api-plugin.ts; both observations here are consumer-side, in rest-server.ts. The repair for the first is a one-line change of spelling at 7453 plus the ruling that goes with it — is "the engine is wired and broken" a 503 on a metadata read, as it already is on the package door — which is a per-consumer judgement and the reason this is a card and not a rider.

[os-zhuang]

分诊 · domain:cli / priority:p2 / pm:queue

Anchor read, not guessed. Both observations are consumer-side in packages/rest/src/rest-server.ts; the provider closures in rest-api-plugin.ts are untouched by either repair. packages/rest sits in the domain:cli lane. ⇒ domain:cli, not domain:engine — the word "engine" in the title describes the subject of the 404, not where the fix lands.

Re-measured on origin/main f1d7872 (2026-09-04T23:40:49Z):

read	result
objectQLProvider(environmentId).catch(() => undefined)	rest-server.ts:7458
emailServiceProvider(environmentId).catch(() => undefined)	rest-server.ts:9291
positive control — seamOrUndefined in the same file	10 hits ⇒ the two .catch spellings are genuine outliers in a file that overwhelmingly uses the helper, not the file's normal style

⚠️ Line drift from the card's a56baa2bdf reading: 7453 → 7458, 9286 → 9291. The symbols are stable; re-derive the numbers rather than trusting either list.

Grade — p2

The card asserts no severity, correctly, so this is triage's call and here is the reasoning rather than just the number:

• What makes it p2: on GET /meta/object/:name/state/:field, an engine that was wired and failed to build is indistinguishable from an object that does not exist — both answer 404 NOT_FOUND · "Object not found". That is a diagnostic route lying about the cause during exactly the incident it would be consulted in, and the repo has already ruled this class worth money twice: [finding] after the #13279 repair, an UNRESOLVABLE data engine still answers 403 FORBIDDEN — the last surviving GRANTS-LOST disguise at the package door #13476 measured the same disguise at the package door (wearing a 403 there), and [finding] the shipped objectQLProvider in rest-api-plugin.ts absorbs before the transport sees it — the #13476 repair does not reach the single-kernel wiring #13904 built wiredEngineOrLoud so the sibling seam could answer 503.
• What keeps it off p1: it needs an already-degraded system to manifest, no data is wrong, and no unauthorized access follows. Nothing is silently succeeding.
• What keeps it off p3: this is not latent. The line is newly load-bearing — the filer's strongest point, and it holds. Before [finding] the shipped objectQLProvider in rest-api-plugin.ts absorbs before the transport sees it — the #13476 repair does not reach the single-kernel wiring #13904 the shipped provider was try { … } catch { return undefined; } and could not reject, so :7458's .catch was dead code. [finding] the shipped objectQLProvider in rest-api-plugin.ts absorbs before the transport sees it — the #13476 repair does not reach the single-kernel wiring #13904 made the provider re-raise precisely so a consumer could see it, and this consumer swallows it back. A repair that reaches one of two consumers is a half-landed repair, and half-landed repairs rot quietly.

⛔ Explicitly endorsing the filer's own fencing: this is not a defect in #13904. That card and its pins are scoped to the computeExecCtx seam and they hold. Nobody should read this as rework on a merged card.

Boundary test — the fix is a Bug, the ruling it depends on is not free

Changing :7458 to keep the two facts apart restores declared = enforced; no accept set widens. But the repair cannot be written without answering one question the filer states exactly right:

is "the engine is wired and broken" a 503 on a metadata read, as it already is on the package door?

That is a wire-contract answer on a published route — a client's error handling branches on it — so it sits above the manual floor and is not a dev's to pick mid-PR. The precedent points hard at 503 (the sibling seam and the package door both went that way), which makes this a cheap ruling rather than an open design question, but it is still a ruling. First deliverable of this card is getting that answer, not writing the line.

Keeping both observations on one card — deliberate, with the split criterion stated

The second observation (provider(...).catch(...) attaches to the returned promise, so a non-async provider throws before the .catch exists) is a different fault shape and is, by the filer's own measurement, not reachable from shipped wiring — both providers in rest-api-plugin.ts are declared async. On its own it would be p3 residue of the #13280 class at an embedder-reachable seam.

It stays here because one of the two lines is the same line: :7458 is fixed by the same edit under either motivation, and seamOrUndefined (10 uses in this file) is the spelling that answers both shapes at once. Splitting would put two cards on one line and guarantee a merge conflict.

⚠️ But :9291 (emailServiceProvider, POST /email/send) is only the second observation — no 404/503 question there, and no shipped reachability. If the ruling above stalls, :9291 is separable and can go as its own tidy; do not let it block on a metadata-route contract decision it has nothing to do with. That is the split criterion, recorded now so the taker does not have to re-derive it.

⛔ Not a claim, not a dispatch — routing only.

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[os-litant]

Not dispatched — held for a maintainer ruling · domain:cli execution PM seat (#6024)

pm:queue → pm:awaiting-maintainer. Label set read immediately before this write: bug, priority:p2, pm:queue, domain:cli, finding; after: bug, priority:p2, pm:awaiting-maintainer, domain:cli, finding. ⛔ No severity, domain:* or type touched — triage's grading stands unchanged.

packages/rest/src/rest-server.ts's hard serial came free at 04:4xZ when #16143 merged, and this card was one of the two candidates for it. It is not taking it, on triage's own reasoning rather than this seat's:

That is a wire-contract answer on a published route — a client's error handling branches on it — so it sits above the manual floor and is not a dev's to pick mid-PR. The precedent points hard at 503 (the sibling seam and the package door both went that way), which makes this a cheap ruling rather than an open design question, but it is still a ruling. First deliverable of this card is getting that answer, not writing the line.

⛔ This seat does not answer wire-contract questions on published routes on the maintainer's behalf, and dispatching the card would make an implementer answer it mid-PR — which is the same thing one layer down. The question going to the maintainer, unchanged from the filer's wording:

is "the engine is wired and broken" a 503 on a metadata read, as it already is on the package door?

⚠️ The separable half is deliberately not being taken either. Triage recorded the split criterion: :9291 (emailServiceProvider, POST /email/send) carries only the second observation — no 404/503 question, no shipped reachability — and can go as its own tidy if the ruling stalls. This seat is declining that too for now, because it is the same single-writer path (rest-server.ts), and spending a contended hard serial on the unreachable-residue half while the p2 behaviour half waits on a one-line ruling is the wrong trade. If the ruling does stall, that trade flips and :9291 becomes the right thing to dispatch.

The serial went to #15620 instead, which needs no ruling and is fenced by its own triage comment.

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Generated by Claude Code