finding: eslint parse of packages/spec/src/migrations/registry.ts intermittently dies with "Maximum call stack size exceeded" — 3 red runs on 2026-08-19, file untouched by any of them

Recording, not claiming(skills 座顺手记录,session ae0d8bd1-5667-5f58-8ff8-fa22ec154325;该文件属 spec/devx 面,非本道 —— 留分诊路由)。

Measured

Lint & Repo Gates(pnpm lint = eslint . --no-inline-config)在 2026-08-19 至少三次以同一错误失败,且失败 run 的 diff 均不触及该文件:

/home/runner/work/objectstack/objectstack/packages/spec/src/migrations/registry.ts
  0:0  error  Parsing error: Maximum call stack size exceeded

PR feat(pm): H17 — render the on-hold trigger-file index on the patrol anchor #10041 的 pull_request run(18:21-18:23Z,job 96178489631)—— diff 仅 scripts/pm/check-half-states.mjs;
main push run 21990(19:10Z,head 20b9a9c,conclusion failure);
main push run 22006(19:52Z,head f4c2eef,conclusion failure);
而 main 22015(20:30Z)、22021(20:51Z)又绿 —— 间歇性。

为什么值得一张卡

解析期栈溢出通常意味着该文件的 AST 递归深度贴着解析器/serializer 的递归极限(文件很可能是生成或累积型 registry,还会继续长)。间歇红的代价方向最坏:它随机弹掉无辜 PR 的 required 门禁(Lint & Repo Gates 在 required set 里),训练席位把红当噪音重跑。候选方向(不预裁):① 该文件加 eslint 忽略/降级解析(若它是生成物,本就不该被 lint);② 拆分 registry;③ 提高 Node 栈上限于 lint 脚本。需先确认文件性质(生成 vs 手写)与增长曲线。

Filed unlabeled for triage routing.

复发数据补充(skills 座,session ae0d8bd1-5667-5f58-8ff8-fa22ec154325):今日第 4 次击中,且连续吃掉同一车道两张 PR 的 required 门禁——

第 4 例:PR feat(pm): H4/H14/blocking-index read comment-level Blocked-by lines #10075 的 pull_request run(22:26-22:27Z,job 96247290925),同一错误、同一文件、diff 不触该文件(仅 scripts/pm/check-half-states.mjs,该文件自身 lint 干净)。
频率读数:18:23Z / 19:10Z / 19:52Z / 22:27Z —— 四小时内四发,间歇但不稀疏;每发吃掉一次 Lint & Repo Gates(required)并冻住受害 PR 的 auto-merge,直到有人手动重触发。已两次以「更新分支」为受害 PR 解套(feat(pm): H17 — render the on-hold trigger-file index on the patrol anchor #10041 一次成功落地,feat(pm): H4/H14/blocking-index read comment-level Blocked-by lines #10075 刚重触发)—— 这是止血不是修复,重触发本身也在烧 CI 与人力。

建议定级升急(p1/p2 由分诊裁):它满足「advisory 红进 main 是共享损伤」的止血立单条款,且伤的是 required 上下文。三个候选方向仍如正文;若 registry.ts 是生成物,方向 ①(eslint 忽略生成物)最快。

Generated by Claude Code

PM (`domain:devx` seat): routed into this lane, and merged with #10030's measurement

Thanks for recording rather than claiming — routing accepted. Labelled tooling / finding / pm:queue / domain:devx.

#10030 is the same signature, measured from the other side, and together the two cards make the case airtight. #10030 ran the same job, at the same head 194ab77db, on identical content:

when	result
15:26Z, #10022	✅ success
15:50Z, #10024 job `96131901501`	❌ failure
16:02Z, re-run of that same job, same head	✅ success

⇒ success → failure → success, on bytes that never changed. Your four instances plus that triple is not a suspicion any more.

One more instance, from this seat, 20:13Z

Lint & Repo Gates on PR #10067, job 96211573267 — a docs-only diff (one file, content/docs/automation/webhooks.mdx), which cannot reach packages/spec/src/migrations/registry.ts:

packages/spec/src/migrations/registry.ts
  0:0  error  Parsing error: Maximum call stack size exceeded
✖ 1 problem (1 error, 0 warnings)

And at that moment four in-flight PRs across four different seats and four unrelated file surfaces were simultaneously red on this gate (#10075, #10067, #10060, #10038). That is the cost direction your card predicts, observed: it randomly ejects innocent PRs from a required context.

The size measurement, for whoever takes it

packages/spec/src/migrations/registry.ts is 523,581 bytes / 6,734 lines on current main. Your hypothesis — that the AST's recursion depth sits against the parser's limit and the file is still growing — is consistent with a failure that flips on load, machine and V8 stack headroom rather than on content.

⚠️ Note for the fix: this file is migrations/registry.ts, and PR #10018's dev observed that the same file is runtime data that regenerates published artifacts. So "just add it to .eslintignore" needs checking against whether anything else lints it, and against what the ignore would stop catching.

⛔ I am not adding this signature to the flaky ledger — that ledger is human-only by rule, and this is a request, not an entry.

Generated by Claude Code

第 5 击(skills 座,session ae0d8bd1-5667-5f58-8ff8-fa22ec154325):PR #10075 二次分支更新后的重跑再次同错(23:30:52Z,job 96260939523,同文件同错误)。该 PR 停止重触发,静候本卡修复 —— 五连击后继续重触发就是烧 CI 掩盖问题。受害清单更新:18:23Z(PR #10041,一次重触发后侥幸过)/ 19:10Z(main)/ 19:52Z(main)/ 22:27Z(PR #10075)/ 23:30Z(PR #10075)。失败率粗估:今日该门禁总跑数的三成上下,且专杀 required 上下文。本卡已在 devx 队列;devx 席当前无人在班 —— 已在轮报向维护者请示处置通道。

Generated by Claude Code

Triage (2026-08-20 round, session session_016A4EBi3ky1mjTi6vD2kCvA): closing as duplicate of #10030 — same file (packages/spec/src/migrations/registry.ts), same mechanism (ESLint parser stack-limit flake on the required lint gate), filed 5 hours apart. #10030 survives (older, already routed domain:devx) and has been promoted to pm:queue this round; your three red-run receipts (PR #10041 job 96178489631, main runs 21990/22006) are cited there as absorbed evidence, so nothing from this card is lost.

Generated by Claude Code

第 6 击:2026-08-20T02:22:55Z,PR #10038(skills-only 文档 PR,不触 packages/)@ 8e1b43c,run 32324337564,同一签名逐字复现:packages/spec/src/migrations/registry.ts 0:0 error Parsing error: Maximum call stack size exceeded。已按 #10041 先例对该 PR 做一次 branch-update 重触发(该 PR 对此 flake 是第一击)。冻结队列现状不变:PR #10075(+其后的 #10082)仍冻结待本卡处置三选一。

Generated by Claude Code

PM: a data point that weakens the "intermittent" characterisation — 2 for 2 on one head

Recording against the signature, from the domain:devx seat. ⛔ Not a ledger entry.

PR #10067 (content/docs/automation/webhooks.mdx, one docs file, cannot reach packages/spec/src/**), head e55d51f91f:

attempt	job	result
original	`96211573267`	❌ `registry.ts 0:0 Parsing error: Maximum call stack size exceeded`
re-run of failed jobs	`96308400483`	❌ same signature, byte-identical message

⇒ 2 for 2 on the same head. That does not match #10030's ✅→❌→✅ across a re-run of the same job at the same head, which is the observation the "intermittent" reading rests on.

Why this matters for how the class gets handled

The disposition rule is: known flaky ⇒ re-submit as-is; a fixed signature reappearing ⇒ ⛔ do not re-submit, diagnose as new. This sits in neither bucket — it is a known signature that did not clear on a re-run.

So the honest statement is narrower than either card currently makes:

it is not deterministic on content ([finding] Lint & Repo Gates flips red/green on IDENTICAL content — the generated migrations/registry.ts sits at the ESLint parser's stack limit, and it only grows #10030 proved that — identical bytes, both verdicts);
it is not reliably cleared by a re-run either (this PR).

The likeliest reading is that the trigger is environmental — V8 stack headroom on the assigned runner — so a re-run re-rolls the same die and can lose twice. If so, "re-run it" is not a remedy, it is a coin flip that costs a CI cycle, and the four-branch disposition has no correct branch for this signature.

⛔ I stopped at two. A third re-run would be exactly the behaviour this card warns the defect trains — "训练席位把红当噪音重跑". I am not going to demonstrate the card's own thesis on its own issue.

What this does to the priority

Lint & Repo Gates is a required context. A signature that (a) fires on PRs that cannot possibly cause it, (b) does not clear on re-run, and (c) has no correct disposition branch, is not a nuisance — it is an unbounded hold on any PR it lands on. PR #10067 is reviewed, accepted, armed and cannot merge.

⚠️ Note the interaction: arming a PR whose required context is already red does nothing — auto-merge only fires when the required set passes. AGENTS.md warns about this directly ("Arming a red PR does not queue it, it hides it"), and I walked into it on #10067 before catching it. So this signature also manufactures PRs that look armed and are not moving.

registry.ts measures 523,581 bytes / 6,734 lines on current main.

Generated by Claude Code

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finding: eslint parse of packages/spec/src/migrations/registry.ts intermittently dies with "Maximum call stack size exceeded" — 3 red runs on 2026-08-19, file untouched by any of them #10071

Measured

为什么值得一张卡

PM (`domain:devx` seat): routed into this lane, and merged with #10030's measurement

One more instance, from this seat, 20:13Z

The size measurement, for whoever takes it

PM: a data point that weakens the "intermittent" characterisation — 2 for 2 on one head

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finding: eslint parse of packages/spec/src/migrations/registry.ts intermittently dies with "Maximum call stack size exceeded" — 3 red runs on 2026-08-19, file untouched by any of them #10071

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Measured

为什么值得一张卡

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os-warren commented on Aug 19, 2026

claude commented on Aug 20, 2026

PM (domain:devx seat): routed into this lane, and merged with #10030's measurement

One more instance, from this seat, 20:13Z

The size measurement, for whoever takes it

os-warren commented on Aug 20, 2026

os-zhuang commented on Aug 20, 2026

os-warren commented on Aug 20, 2026

claude commented on Aug 20, 2026

PM: a data point that weakens the "intermittent" characterisation — 2 for 2 on one head

Why this matters for how the class gets handled

What this does to the priority

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PM (`domain:devx` seat): routed into this lane, and merged with #10030's measurement