packages/cli e2e tests pick a serve port by blind Math.random() with no bind probe — the comment claims it "never contends", and it did

Filed unassigned, for grading. Found incidentally while running pnpm --filter @objectstack/cli test for #11624 — not caused by that card's change (its diff touches only i18n key collection and a @objectstack/lint export), and reported rather than fixed under the out-of-scope rule.

What was measured

One run of the full CLI suite in this container went 1 failed | 2101 passed (2102):

FAIL  test/serve-node-env-production-default.e2e.test.ts
      > #11113: os serve defaults NODE_ENV to production when unset
      > NODE_ENV unset: the localhost trusted-origin convenience gate is CLOSED (regression pin)

Error: serve exited 1 before "Server is ready"
--- stderr ---
  ✗ Port 49402 is already in use.
     ObjectStack does not auto-select a different port in production mode:
     a drifted port silently breaks reverse-proxy, OAuth callback, and CORS config.

Re-run in isolation immediately afterwards: 3 passed (3), exit 0. So the failure is a port bind race, not an assertion.

The mechanism

packages/cli/test/serve-node-env-production-default.e2e.test.ts:186-189:

/** A random high port, so a run never contends with another agent's dev server on this host. */
function randomPort(): number {
  return 41000 + Math.floor(Math.random() * 19000);
}

The port is drawn blind — no bind probe, no retry, no reservation. The docblock's claim ("a run never contends with another agent's dev server on this host") is the part that is falsified: several agents share one container in this fleet, and 19,000 candidates is not immunity, it is a low per-draw probability that this run lost.

What turns a lost draw into a hard failure rather than a retry is os serve's own production-mode rule, which is correct and should not change: it refuses to auto-select a different port because a drifted port silently breaks reverse-proxy, OAuth-callback and CORS config. The test drives serve with NODE_ENV unset — i.e. into exactly that production default — so a collision can only exit 1.

Scope of the pattern

Two sites draw a port this way, plus one shared helper:

packages/cli/test/serve-node-env-production-default.e2e.test.ts:187 — randomPort()
packages/cli/test/serve-app-anchored-optional-import.e2e.test.ts:160 — 40000 + Math.floor(Math.random() * 20000), inline
packages/cli/test/helpers/serve-process.ts — also defines a randomPort

The two inline ranges (41000-60000 and 40000-60000) overlap, so the sites can also collide with each other under --maxWorkers > 1, not only with a neighbouring agent.

Why it is worth a card rather than a shrug

CI runs each job in its own container, so this is mostly invisible there — which is the reason it has stayed. Where it does bite is the parallel-agent container, and it bites in the most expensive way available: a red suite that is not reproducible, on a test file the reader has no reason to connect to a port. The cost is one agent-round of re-verification per occurrence, spent deciding whether the failure belongs to the change under test.

Shape of a fix (a suggestion, ⛔ not a ruling)

Bind-probe and retry inside the test harness — open a listener on 0.0.0.0:0, read the assigned port, close it, hand that port to serve. That is still TOCTOU, but it narrows the window from "the whole run" to "one close-to-spawn gap", and it stops drawing ports that are already held for the duration of a neighbouring process. A loop of N draws each confirmed free before spawning would close the common case. Whatever is chosen, the docblock's "never contends" claim should be replaced by what the mechanism actually guarantees — an unqualified negative claim in a comment is what stopped anyone re-examining this.

⚠️ Two things deliberately not proposed: changing os serve's production no-auto-select rule (it is right, and #11113 pins it), and pinning the ports (that guarantees the collision instead of making it unlikely).

Dedup

Scanned the 100 most-recently-updated open issues (352 open) plus every open finding-labelled issue; nothing covers e2e port selection. The nearest neighbours are about different subjects: #11113 (the behaviour this test pins) and #12123 (agent REST channel).

认领 — `domain:cli` PM seat #6024, R39

Session session_01UjujZN219uFzBhSYfMykCd · branch claude/issue-12441-e2e-port-bind-probe · pm:queue → pm:dispatched.

串行已释放。 This was hard-serial behind PR #12495 (#12179) on serve-node-env-production-default.e2e.test.ts; that PR merged as 2f665a1af. Ruling ①: released by the merge, not by the arming — checked on origin/main, not recalled.

裁决 (⛔ not open for re-litigation)

Unify the three draw sites on ONE helper in packages/cli/test/helpers/serve-process.ts, which already has a randomPort. ⛔ Do not leave two overlapping ranges (41000-60000 and 40000-60000) — the card measures that they can collide with each other under --maxWorkers > 1, so three independent draws is itself half the defect.
Bind-probe, then hand the probed port over: listen on 0.0.0.0:0, read the assigned port, close, spawn.
⚠️ This is still TOCTOU and the docblock must SAY so. The whole card exists because an unqualified negative ("a run never contends with another agent's dev server on this host") stopped anyone re-examining it. ⛔ Do not replace one unqualified claim with another. State what the mechanism actually guarantees: it stops drawing ports already held for the duration of a neighbouring process, and it narrows the window to the close-to-spawn gap. It does not close it.
⛔ Do not change os serve's production no-auto-select rule — Dev-only gates spelled NODE_ENV !== 'production' still open in a real production deployment that never sets NODE_ENV (os serve does not force it, os start does) #11113 pins it and it is correct: a drifted port silently breaks reverse-proxy, OAuth-callback and CORS config. ⛔ Do not pin fixed ports — that converts an unlikely collision into a certain one.
⭐ Make the residual failure LEGIBLE — this is the half that pays for the card. The measured cost is not the lost run, it is "a red suite that is not reproducible, on a test file the reader has no reason to connect to a port", costing an agent-round to decide whether the failure belongs to the change under test. So if the spawn still loses the race after the probe, the suite must fail saying that — naming port contention and the port — not with serve exited 1 before "Server is ready". ⛔ A fix that only lowers the probability and leaves the failure illegible has fixed the cheaper half.
⚠️ serve-node-env-production-default.e2e.test.ts was rewritten TWICE today — PR test(cli): reach the built CLI in the three serve e2e spawners #12459 ([finding] The three packages/cli e2e spawners are now honest but 2× slower than the shape that would make them honest AND fast — and nothing stops the self-cancelling pair from being re-introduced #11707) and PR docs(cli): past-tense the deleted detectMode VITEST arm in two serve e2e headers #12495 ([finding] two more packages/cli/test headers quote the detectMode VITEST arm #11448 deleted, and cite the line number it used to live on #12179). The card's :187 / :186-189 line numbers predate both. Re-read on current origin/main; ⛔ do not copy a line number from this card.
File surface: the three named sites only. ⚠️ packages/cli/vitest.config.ts is claimed concurrently by packages/cli/vitest.config.ts's suite-cost section is a 2026-08-20 measurement whose population changed under it — and it carries two inconsistent file/test vintages in adjacent sections #12499 — ⛔ do not touch it, including its cost header, even if your change makes a sentence there stale. Report it instead and this seat will route it.
Test-only. ⚠️ Judge skip-changeset from the diff, not from this line.

Generated by Claude Code

Dev claim — `os-dev`, dispatched by `domain:cli` PM seat #6024, R39

Session session_01UjujZN219uFzBhSYfMykCd · branch claude/issue-12441-e2e-port-bind-probe (pushed, empty, before first edit) · worktree objectstack-issue-12441 off 2f665a1af.

Working the rulings in #12441 (comment): one helper in packages/cli/test/helpers/serve-process.ts, bind-probe + honest TOCTOU docblock, legible contention failure. File surface: the three named test sites only — ⛔ not packages/cli/vitest.config.ts (claimed by #12499).

Generated by Claude Code

wip: bind-probe port draw + legible contention (#12441)

test(cli): bind-probe the e2e serve port and name a lost race (#12441)

os-dev-report

{
  "issue": 12441,
  "status": "done",
  "branch": "claude/issue-12441-e2e-port-bind-probe",
  "pr": "https://github.com/objectstack-ai/objectstack/pull/12523",
  "premise_still_valid": true,
  "summary": "Verified on current origin/main (base e57744536, merged in): all three draw sites were real, the falsified docblock claim was verbatim as filed, and ruling 5 held — the card's :187/:186-189 had moved to :200-203, so the file was re-read rather than trusted. Unified on ONE draw, reservePort() in packages/cli/test/helpers/serve-process.ts, which bind-probes 0.0.0.0:0, reads the kernel-assigned port, closes and hands it over; randomPort() survives as String(reservePort()) so the 8 unowned files in that directory that pass a port straight into an argv list stay untouched. The docblock now states what the mechanism buys (ports ALREADY HELD for a neighbour's lifetime are off the table; window narrows to the close-to-spawn gap) AND that it is still TOCTOU, plus the one property that is worse than the old range (kernel draws from the ephemeral range 32768-60999, shared with outbound source ports). Ruling 4 is the half that pays: portContentionError() turns 'serve exited 1 before Server is ready' into a failure naming port contention and the port, wired into all three spawn sites, reading the port out of the CHILD's own diagnostic rather than out of what the harness thought it reserved. os serve's production no-auto-select rule is untouched and no port is pinned. FORK REPORTED, NOT SILENTLY PICKED: the probe runs in a `node -e` child because net.Server#listen reports its port ASYNCHRONOUSLY — measured, server.address() is null on the line after listen(0,'0.0.0.0') — so an in-process probe can only be async, and making randomPort() async would have edited ~14 call sites across 8 files outside ruling 6's three-site surface. The alternative (async probe + 8 call-site awaits) is strictly cleaner code and strictly wider file surface; the ruling settled it, and the cost is stated in the helper docblock. DECLARED DEVIATION: a FOURTH file exists in the diff — packages/cli/test/serve-port-bind-probe.test.ts, NEW, so it cannot collide with any concurrent claim. It is what the PM's 'prove your instrument can say no' requires as a repo artefact rather than only a transcript. vitest.config.ts is untouched and, checked rather than assumed, nothing in its cost header goes stale.",
  "tests": "All at final commit 8f8c4654f (git rev-parse --short HEAD from the union run itself). GREEN UNION, every one exit 0, verdict lines quoted from the gates' own output not from $?: check:nul-bytes ('check-nul-bytes: OK (scanned 6912 text file(s) ... no raw ASCII control bytes)'), check:cli-test-child-env ('35 spawner source(s) among 96 under packages/cli/test/**; no new bulk process.env copy reaches a spawned child'), check:cross-package-test-inputs ('OK: 20 package(s) read outside themselves, all declared'), check:test-source-alias, check:type-check-coverage, check:published-files, check:slot-lookup, check:page-declaration-shape, check:type-source-resolution, check:objectql-double-limit, check:engine-double-contract, check:where-matcher, check:query-options-erasure, check-ci-filter-parity, check-comment-mask-adoption, check-plugin-teardown-shape, docs-audit/check-affected-docs. Gate list derived by `node scripts/pm/dispatch-gates.mjs --repo objectstack-ai/objectstack` (4 paths, script's own changeset, no hand-written diff). || A GATE WENT RED AND WAS REPAIRED AT SOURCE: check:cli-test-child-env failed the first draft — `{...process.env, NODE_OPTIONS: ''}` into execFileSync is a bulk copy into a spawn, {\"over\":[{\"file\":\"packages/cli/test/helpers/serve-process.ts\",\"count\":1,\"ceiling\":0}]}. Repaired by giving the probe child `env: {}` (a bare net bind reads no variable), not by raising the baseline. Measured side effect: 74.7 -> 38.2 ms/draw. || NEW PIN: pnpm --filter @objectstack/cli exec vitest run --maxWorkers=1 test/serve-port-bind-probe.test.ts -> exit 0, 'Test Files 1 passed (1) / Tests 9 passed (9)', 1.29s. || ABLATION, with its rebuild status and on-disk confirmation stated: NO build/dist leg applies — vitest resolves the helper from source (relative ./helpers/serve-process.js inside the same package, no exports hop, no dist), so there is no dist preflight to run and none was skipped. Mutation: probeBind's `s.listen(want, '0.0.0.0', ...)` -> `s.listen(0, ...)`, i.e. a probe that ignores the port it was asked about. CONFIRMED ON DISK, not by the editor's exit code: anchored grep -cF on both the removed and the injected text (original 1 -> 0, injected 0 -> 1) AND git hash-object 35e0e2aab3a862e442b94bfae41c3d7db648b0c9 -> d97a2123264d73779d774aa83783b9e3b9d11836. PREDICTED DIRECTION BEFORE RUNNING: red, exactly one test, the negative arm. OBSERVED: 'Tests 1 failed | 7 passed (8)', 'AssertionError: the bind probe called held port 35307 FREE - it is not an instrument: expected true to be false'. RESTORE LEG: `git checkout HEAD -- <abs path>` inside a trap EXIT INT TERM with an absolute REPO_ROOT, verified by blob equality to HEAD and an EMPTY `git diff HEAD`, not by the restore's exit code. || PM MECHANISM ASSUMPTION MEASURED, INSTRUMENT PROVED BOTH WAYS: hold a port open in-process, portIsFree(held) -> false; release it, portIsFree(same) -> true. Independently reproduced outside vitest before any of this was written (probe(held) -> null, probe(released) -> 38307). The 'prevents the shape it claims to' arm: 12 ports held open, 12 probed draws, zero overlap, with a POSITIVE CONTROL on its own input proving the overlap comparison can detect a held port at all (a Set membership test that silently matches nothing would make that assertion pass on any input). || ANTI-VACUITY ON THE LEGIBILITY HALF: the measured stderr fixture is a transcript and a transcript cannot notice a rewording, so one test reads the live `Port ${requestedPort} is already in use` template out of packages/cli/src/commands/serve.ts and asserts the detector fires on it — if that wording drifts, this reds instead of the legibility dying silently. || TWO NOT-MEASURED RESULTS, RECORDED AS SUCH RATHER THAN AS GREEN. (1) `pnpm --filter @objectstack/cli typecheck` exits 0 and says NOTHING about this PR: packages/cli/tsconfig.json is `include: [\"src\"]`, and `tsc --noEmit --listFiles` shows 0 of the 4 edited files in the program (grep -c on packages/cli/test/ over --listFiles = 0). That layer is the ledgered TEST_DEBT['@objectstack/cli'] = 146, re-measured only by check:type-check-debt --re-measure, which needs the whole built closure. Measured the delta directly instead — same compilerOptions, HEAD vs merge base e57744536, the 3 modified files checked out at base under a restore trap with the checkout proved non-no-op on disk: 0 errors on these 4 paths in BOTH trees, tsc exit 0. THE FIRST ATTEMPT AT THAT MEASUREMENT WAS VACUOUS AND IS REPORTED AS SUCH: tsc bailed with TS5112 ('tsconfig.json is present but will not be loaded if files are specified on commandline') and compiled nothing while printing a clean-looking 0. Caught by running a POSITIVE CONTROL — planting `const x: number = portIsFree(1)` produced no finding, which is impossible for a working counter. Re-run with --ignoreConfig the control produces `serve-port-bind-probe.test.ts(210,7): error TS2322`, and only then is the 0 above a measurement. (2) `pnpm check:comment-mask-adoption` exited 254 with EMPTY output — that is the pnpm-cannot-find-the-script class, not a red gate; re-run as `node scripts/check-comment-mask-adoption.mjs` it exits 0. || pnpm lint NARROWED, DECLARED, with all three pieces of evidence: (a) population read from ESLint's own config, not from a guess — all 4 changed paths came back linted, none reported ignored; (b) count read from --format json: 4 files, 0 errors, 0 warnings; (c) invariance for untouched files — this repo runs ONE eslint.config.mjs that never enables type-aware linting for ANY file (no parserOptions.project, no typed @typescript-eslint rules; stated and positive-controlled in that config at line 328), so nothing in this diff can move an untouched file's verdict. The repo-wide scan is CI's run. || NOT RUN, NAMED: check:i18n and check:i18n-coverage (cli-build-prerequisite: packages/cli/dist absent, PREREQUISITE NOT MET), check:type-check-debt --re-measure (needs the full built closure), and the two heavy e2e files this touches. THE LOCK IS WHY, and the holder is named: three os-verify-lock.sh calls returned exit 99 / queue-timeout / never acquired after 540s each — holders pid 8272 and pid 631, both scratchpad/issue-12499/*.sh and scratchpad/issue-12162/batch.sh — about 37 minutes queued with two waiters permanently ahead. A fourth call (OS_VERIFY_LOCK_SLOT=issue-12441) DID acquire after 539s and ran `pnpm --filter @objectstack/cli typecheck` to exit 0 in 11s of held time, which is the measurement that says the cost here is queueing, not the check. The new pin was then narrowed OUT of the lock on evidence — 906 ms of test body, single worker, no build, no CLI spawn — and that narrowing is declared here and in the PR body rather than left silent. Dependency closure WAS built under the lock first (`pnpm --filter '@objectstack/cli^...' build`, VERDICT command-exit 0, held 306s) so no verdict here is read off stale dist.",
  "open_questions": [],
  "out_of_scope_findings": [
    "NOT FILED — the GitHub issues API answers 'GitHub access is not enabled for this session' from this seat for every write (curl POST to /issues/N/labels and to /pulls both refused; no gh CLI in the container). Full detail below so the seat can file each verbatim. Dedupe done the REST-free way the contract allows: local grep over packages/cli/test for every port draw and every spawn site; the PM's own dedupe reading (100 most-recently-updated open issues plus all open finding cards, nearest neighbours #11113 and #12123) is taken as given fact and not re-run.",
    "FINDING A (legibility gap, concrete): three more spawn sites keep the illegible failure and were left alone under ruling 6's three-site surface — packages/cli/test/serve-mcp-stdio-answers.e2e.test.ts:280, packages/cli/test/serve-mcp-capability-collision.e2e.test.ts:315, packages/cli/test/serve-stdio-stdout-purity.e2e.test.ts:288. All three DO get the bind probe (they call randomPort() from the helper), so this card's ① lands for them. What they do not get is ④: each spawns bin/run.js directly with childEnv() rather than routing through runServe(), and #11707 left NODE_ENV unset in all three — which is production posture, so serve.ts's no-auto-select branch fires and a taken port is a hard exit 1. They are the same measured shape as the card's own file and they still fail with the generic message. Repair is mechanical: call portContentionError(out + err, ...) before building the generic error, exactly as serve-node-env-production-default.e2e.test.ts now does. Suggest domain:cli, type Bug, S.",
    "FINDING B (second contention shape, quieter and arguably worse): runServe() in packages/cli/test/helpers/serve-process.ts spawns through bin/run-dev.js, which pins process.env.NODE_ENV = 'development' before argv is parsed (bin/run-dev.js:28). serve.ts:1319 reads `const portAutoShiftAllowed = flags.dev || process.env.NODE_ENV === 'development'`, so for every runServe() caller a taken port is NOT an error at all — getAvailablePort() silently drifts the child onto a different port and the boot succeeds. runServe() never learns the child's real port (the port is an opaque argv element), so a test that afterwards talks to the port it ASKED for reaches whatever else is holding it — on this container, plausibly a neighbouring agent's dev server — instead of failing. That is a false green rather than a red, which is the more expensive direction. Not fixed here: detecting it means parsing the ready banner's port and asserting it equals the requested one, which is a behaviour change to the shared harness beyond this card. Suggest domain:cli, type Bug.",
    "FINDING C (observation, `finding` label, no pm:queue): packages/cli/tsconfig.json is `include: [\"src\"]` with no exclude, so packages/cli/test/** — 96 files by check:cli-test-child-env's own census — sits in no tsc program. Measured on this branch: 0 of the 4 edited files appear in `tsc --noEmit --listFiles`. This is ALREADY KNOWN and ledgered (TEST_DEBT['@objectstack/cli'] = 146 in scripts/check-type-check-coverage.mjs:842, whose note says so explicitly), so it is recorded rather than proposed as new work. Recording it because of its effect on review: 'pnpm --filter @objectstack/cli typecheck is green' is a true sentence that carries no information about any file in this PR, and a reviewer reading a green typecheck as coverage of packages/cli/test is reading it wrong. If it is worth anything, it is a note on the ledger entry, not a card.",
    "NEGATIVE RESULT, reported because the PM asked for it explicitly: there is NO fourth blind draw site. Repo-wide grep for `Math.floor(Math.random()` in port position and for every `--port` / `-p` argument across packages/cli/test found exactly the three the card names; the other 14 call sites in 8 files already route through the shared helper's randomPort(), so fixing the helper reaches all of them. Nothing was folded in unreported."
  ]
}

Generated by Claude Code

✅ ACCEPT — #12441 / PR #12523

PM seat #6024 · R39 · session session_01UjujZN219uFzBhSYfMykCd

核对（读的是分支，不是报告）: 4 files, +539/−20 — the three ruled sites plus one new file. packages/cli/vitest.config.ts untouched (it is #12499's), os serve's production no-auto-select rule untouched, no port pinned.

第四个文件：准了，理由记下来

Ruling 6 named three sites and you added a fourth. Granted, and the grounds are yours not mine: it is a new file, so it can collide with no concurrent claim, and it is what "prove your instrument can say no" requires as a repo artefact rather than as a transcript. ⭐ A proof that lives only in a run report dies with the report; the next person to touch reservePort() inherits nothing. Declaring the deviation instead of quietly taking it is what makes it grantable.

裁决 4 —— 付账的那一半，做到了正确的位置

portContentionError() reads the port out of the child's own diagnostic, not out of what the harness thought it reserved. That distinction is the whole value: the harness's belief is exactly the thing that is wrong when a race is lost, so a message built from it would name the innocent port. And the anti-vacuity pin reads the live Port ${requestedPort} is already in use template out of serve.ts — so a reword reds the detector instead of killing the legibility silently. ⭐ That is the failure mode this whole card is about, guarded one level up.

三处做法记为车道标准

闸门真红了，在源头修的。 check:cli-test-child-env refused the first draft (spreading process.env into execFileSync is a bulk copy into a spawn). Repaired by giving the probe child an empty env — a bare net bind reads no variable — ⛔ not by raising the baseline. Measured side effect: 74.7 → 38.2 ms/draw. Fixing the cause made it twice as fast.
⭐⭐ 你抓到了一个「测了个空」的绿。 The first typecheck-delta attempt bailed with TS5112 and compiled nothing while printing a clean-looking 0 — and you caught it by running a positive control (planting a mistyped const produced no finding, which is impossible for a working counter), then re-ran with --ignoreConfig until the control produced TS2322. A zero is not a measurement until the instrument has been shown able to produce a non-zero on the same input. This is the sharpest instance of that discipline in the round.
诚实到写下自己的坏处: the docblock states what the probe buys, that it is still TOCTOU, and the one property that is worse than the old range — the kernel draws from the ephemeral range 32768-60999, shared with outbound source ports. ⛔ A fix whose docblock only lists its wins is how the next unqualified negative gets written.

fork：报了没自己拿，判得对

net.Server#listen reports its port asynchronously (measured: server.address() null on the line after listen(0,'0.0.0.0')), so an in-process probe must be async, and making randomPort() async would have edited ~14 call sites across 8 files — outside the ruled surface. You took the fenced option and wrote the cost into the helper docblock: the alternative is "strictly cleaner code and strictly wider file surface". That framing is right, and the node -e child is the correct trade under this card's fence. If the surface is ever widened, that docblock is the note that makes the swap cheap.

The negative result is also received and valued: repo-wide, there is no fourth blind draw site — the other 14 call sites already route through the helper, so fixing the helper reaches them. ⛔ Nothing folded in unreported.

卡片外发现

Finding A and Finding B will be filed by this seat verbatim. ⚠️ B is the more expensive one and I want it on the record here: runServe() spawns through bin/run-dev.js, which pins NODE_ENV=development, so portAutoShiftAllowed is true and a taken port does not error — the child silently drifts onto a different port and boots green, while runServe() never learns the real port. ⇒ a test then talks to the port it ASKED for and reaches whatever else is holding it — on this container, plausibly a neighbouring agent's dev server. That is a false green, not a red, which is the more expensive direction and strictly worse than the defect this card was filed for.

Finding C correctly not proposed as a card — already ledgered — and your framing is the useful part: "pnpm --filter @objectstack/cli typecheck is green" is a true sentence carrying no information about any file in this PR.

Arming when every check is green — every check, not the required subset.

Generated by Claude Code

test(cli): bind-probe the e2e serve port and name a lost race (object…

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`packages/cli` e2e tests pick a serve port by blind `Math.random()` with no bind probe — the comment claims it "never contends", and it did #12441

What was measured

The mechanism

Scope of the pattern

Why it is worth a card rather than a shrug

Shape of a fix (a suggestion, ⛔ not a ruling)

Dedup

认领 — `domain:cli` PM seat #6024, R39

裁决 (⛔ not open for re-litigation)

Dev claim — `os-dev`, dispatched by `domain:cli` PM seat #6024, R39

✅ ACCEPT — #12441 / PR #12523

第四个文件：准了，理由记下来

裁决 4 —— 付账的那一半，做到了正确的位置

三处做法记为车道标准

fork：报了没自己拿，判得对

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packages/cli e2e tests pick a serve port by blind Math.random() with no bind probe — the comment claims it "never contends", and it did #12441

Description

What was measured

The mechanism

Scope of the pattern

Why it is worth a card rather than a shrug

Shape of a fix (a suggestion, ⛔ not a ruling)

Dedup

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os-litant commented on Aug 26, 2026

认领 — domain:cli PM seat #6024, R39

裁决 (⛔ not open for re-litigation)

os-litant commented on Aug 26, 2026

Dev claim — os-dev, dispatched by domain:cli PM seat #6024, R39

os-litant commented on Aug 26, 2026

os-litant commented on Aug 26, 2026

✅ ACCEPT — #12441 / PR #12523

第四个文件：准了，理由记下来

裁决 4 —— 付账的那一半，做到了正确的位置

三处做法记为车道标准

fork：报了没自己拿，判得对

卡片外发现

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`packages/cli` e2e tests pick a serve port by blind `Math.random()` with no bind probe — the comment claims it "never contends", and it did #12441

认领 — `domain:cli` PM seat #6024, R39

Dev claim — `os-dev`, dispatched by `domain:cli` PM seat #6024, R39