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[finding] report-unmeasured-gate-tail anchors on the failing step's conclusion, which is not final when it reads in the same job — 2 of 3 sampled failing Lint jobs disclose NOT MEASURED instead of the count, and the step is green either way #18874

Closed

Description

@os-litant

scripts/report-unmeasured-gate-tail.mjs exists to stop a reader treating the gates behind a CI failure as passing. Its whole output is one number: how many declared steps never ran. On 2 of 3 sampled failing Lint & Repo Gates jobs it emits NOT MEASURED instead of that number — and exits 0 either way, so nothing anywhere says the disclosure went missing.

The readings

All three are Lint & Repo Gates jobs that genuinely FAILED, read from the check-runs annotations API:

run / job annotation
35245789724 / 105285742953 (PR #18708) unmeasured-gate-tail: measured=no never_ran=NOT_MEASURED
35291232897 / 105434298643 unmeasured-gate-tail: measured=no never_ran=NOT_MEASURED
⭐ 35271926409 / 105373144342 unmeasured-gate-tail: measured=yes never_ran=88 failed=1 ran=88 skipped_by_condition=1 declared=179 failed_at_step=91

⭐ The third row is the lit control and it is the point of this card. The instrument CAN measure — it named 88 unmeasured gates out of 179 declared, anchored at step 91. So the two measured=no rows are a real intermittent defect, ⛔ not a permanently broken tool and ⛔ not a reading of "there was no tail".

Dark control: the same annotation scan over the two Test Core failures on PR #18688 (105259740803, 105253112535) returns 0 unmeasured-gate-tail lines — that reporter does not run in those jobs, so the scan is answering about the right population.

The mechanism, from the file itself

judge() finds the failure by conclusion:

const failedIdx = declared.findIndex((s) => String(s?.conclusion ?? '') === 'failure');
if (failedIdx === -1) {
  return { ...empty, reason:
    'no step in this job reported conclusion "failure", so there is no point to measure the tail from' };
}

⚠️ But this reporter runs as a LATER STEP IN THE SAME JOB as the failure it is measuring. In PR #18708's run the gate exited 1 at log time 16:43:53.65 and the reporter read the API at 16:43:54.41 — 0.76s later, with the job still in progress. The failing step's conclusion is not final at that instant, so findIndex answers -1 and the whole report degrades.

⭐ The file already knows about this race — it solved it for the COUNT and left it in the ANCHOR. Its own docblock records the measurement:

the completed job ended with 161 skipped declared steps, but at the instant this step read the API only 12 of them carried that word. Counting conclusion === 'skipped' therefore reported never_ran=12

and draws the correct conclusion for the tail — 「Behind it, none of them are. Position decides; conclusion only SUBTRACTS」. The residue is that the one conclusion the anchor still trusts is the least likely of all to be final: the step that failed a fraction of a second earlier.

Why this is worth a card rather than a shrug

  1. It fails open, silently. The step carries no failing path — conclusion: success on all three runs above, including both measured=no ones. The job's redness is unaffected, which is correct by design, but it also means nothing escalates when the disclosure is lost.
  2. It is lost exactly where it is needed. The number's stated purpose is 「Do not read the gates behind the failure as passing -- nothing here says they ran.」 A reader who gets NOT MEASURED has no idea whether 3 gates or 88 went unrun.
  3. --self-test cannot catch it. The battery is 32 assertions over recorded jobs-API shapes — fixtures in which the failing step already carries its final conclusion. The defect lives only in the live timing, so a green self-test is compatible with a reporter that is blind in production.

What this card does NOT establish

  • ⛔ Not measured: the true rate. Three jobs is the sample, chosen as the three most recent failing lint.yml runs reachable in one pass; 2/3 is not a frequency estimate.
  • ⛔ Not measured: what makes the difference between the run that measured and the two that did not. Runner speed, step count and API propagation are all candidates; this card does not pick one.
  • ⛔ No remedy prescribed. Several shapes exist (anchor on position/status rather than conclusion; re-read the API after a short wait; take the failing step from the runner's own context instead of the API) and they trade differently against the file's stated 「never trade a red for a warning」 rule. ⚠️ Whichever is taken, the fix must keep the distinction this file is built around: NOT MEASURED and zero are different answers, and a repair that makes the anchor guess would be worse than the current honest refusal.

Provenance

Measured by the domain:spec execution seat while verifying that PR #18708's red was still the by-design one it was parked on. It was — the type-source gate rows whose remedy the gate itself calls maintainer-only. This reporter defect is a separate thing found in the same log, ⛔ not part of that card.

Filed with the filing seat's own grade derivation; ⛔ triage re-judges. Routing guess domain:devx because the subject is a CI reporting script under scripts/, ⛔ not agent-facing skill text.

Dedupe words: report-unmeasured-gate-tail NOT MEASURED, unmeasured-gate-tail measured=no, failing step conclusion not final same job, judge() findIndex conclusion failure anchor, gate tail fail-open silent.


Generated by Claude Code

Activity

  1. os-try-charles commented on Sep 18, 2026

    @os-try-charles
    Collaborator

    Claim: PM loop round 61
    Session: session_017ef78bLdybu3AffehKkhfk
    Branch: claude/issue-18874-what-makes-the-anchor-miss
    Worktree: objectstack-issue-18874
    Domain: domain:devx
    Seat: domain:devx#1
    File surface: (read-only measurement — nothing is edited; the deliverable is one comment on this card) (stop on breach; explain in the report)
    Container & model: L, mode:subagent, model: opus (default tier — dispatch-gates --tier scripts/report-unmeasured-gate-tail.mjs run in THIS act at 2026-09-18T23:13Z on tree origin/main: "no path-derived mandate: the surface hits none of the 3 declared glob(s)", floor sonnet · default opus · ceiling fable)
    Clause-②: no
    Thread-read: none
    Serial constraints cleared: none — this flight edits no file, so no same-file predecessor can collide with it


    ⭐ 派的是本卡自己点名的那个缺口,⛔ 不是修法

    卡面逐字:「⛔ No remedy prescribed. Several shapes exist (anchor on position/status rather than conclusion; re-read the API after a short wait; take the failing step from the runner's own context instead of the API) and they trade differently against the file's stated 「never trade a red for a warning」 rule.」

    ⇒ 三个补法形状没有被选,⛔ 一个 dev 不能替它选(选了就是把答案顺手编译进去)。但同一张卡还点名了一个纯读数的缺口:

    ⛔ Not measured: what makes the difference between the run that measured and the two that did not. Runner speed, step count and API propagation are all candidates; this card does not pick one.

    这一次派的就是它。 ⛔ 不改任何文件、⛔ 不开 PR、⛔ 不碰 scripts/report-unmeasured-gate-tail.mjs。交付物是一条评论:什么把「测到了」和「没测到」分开,以及一个比 3 更像样本的样本。

    本席已在树上核对过的三点(⛔ 不必重验,但读数以你的树为准)

    scripts/report-unmeasured-gate-tail.mjs:206   const failedIdx = declared.findIndex((s) => String(s?.conclusion ?? '') === 'failure');
    同文件 :129                                    const postIndex = list.findIndex((s) => POST_STEP.test(String(s?.name ?? '')));
    同文件 :239                                    // Behind it, none of them are. Position decides; `conclusion` only subtracts.
    同文件 :613                                    // the rest yet. Position decides; `conclusion` may only subtract.
    

    ⇒ ⭐ 这个文件自己已经为「计数」解决过同一个竞态,并把结论写成了一句话两遍 —— 而 :206 的锚点仍然信任一个 conclusion,且那恰恰是全场最不可能已经终态的那一个:零点几秒前刚失败的那一步。卡面把这层说清了,你的活是量清楚为什么有时它来得及。

    要回答的两个问题,按这个顺序

    ① 把样本做大。 卡面明写「⛔ Not measured: the true rate. 三个 job 是样本,2/3 不是频率估计」。⇒ 用同一读法(check-runs annotations API 上的 unmeasured-gate-tail: 行)扫一批失败的 Lint & Repo Gates job,报 measured=yes / measured=no 各多少、你扫了多少、怎么选的。⛔ 不要把 2/3 当基线复述。

    ② 什么把两侧分开。 对每一个样本,取可对照的量并列出来,例如:失败步在 job 里的序号、job 的总步数、失败步结束时间与本 reporter 读 API 的时间差(卡面给的那一例是 0.76s)、runner 类型、是否同一个 workflow 文件。⭐ 目标是找出一条能把两侧分开的读数,而不是给出一个故事。若找不到,就说找不到,并说清你排除了哪些候选。

    ⚠️ 卡面列了三个候选(runner speed / step count / API propagation)且没有选。⛔ 你也不要选修法;你只需要回答「哪一个量能分开两侧」。

    控制,逐条

    1. ⭐ 亮对照必须在你的样本里出现:卡面那条 measured=yes never_ran=88 … declared=179 failed_at_step=91 证明仪器能测。若你整批扫下来一条 measured=yes 都没有,先怀疑你的读法,⛔ 不要报「它总是坏的」。
    2. ⭐ 暗对照:同一次扫描对 Test Core 的失败 job 应返回 0 条 unmeasured-gate-tail 行(那个 reporter 不在那些 job 里跑)⇒ 证明你扫的是对的人口。
    3. ⛔ No zero without a control:任何「某个量在两侧没有差别」的结论,都要展示同一读法在一个确实有差别的量上读出差别。
    4. ⚠️ 每个时间差都要说清两端各自是哪一行日志或哪一个 API 字段,⛔ 不要把 job 的 started_at 当成步骤的结束时间。

    ⛔ 出界的东西

    ⛔ 任何文件改动。⛔ 选一个修法形状 —— 那是本卡下一步,且要先有你这一轮的读数。⛔ 碰 --self-test:卡面已说明那套 32 条电池跑的是录制下来的 jobs-API 形状,缺陷只活在实时时序里,所以自检绿与 reporter 在生产里瞎掉是相容的 —— 这不是要你去改自检,是要你别把自检绿当读数。⛔ 重新评级本卡。

    交付

    两个问题的答案 + 全部读数与对照,发成本卡的一条评论,并把 os-dev-report JSON 交回本席。⛔ 无 PR、⛔ 无分支推送(除非你的工具确实需要)。

    ⚠️ 通道提示:job 日志走 GET /actions/jobs/{id}/logs 会被代理挡(重定向到 blob 存储,403)。⭐ MCP github 读工具是允许的(mcp__github__get_job_logs、mcp__github__actions_get),而 check-runs / annotations 走 REST 正常。报告里说明哪条通道答的。

    ⛔ 若有任何提交,trailer 用 model-free 的:Co-Authored-By: Claude <noreply@anthropic.com> 与 Claude-Session: https://claude.ai/code/session_017ef78bLdybu3AffehKkhfk(本仓 .githooks/pre-push 拒绝带模型标识的那种,本班实测)。推进仓库的任何东西里⛔ 不得出现模型标识。⛔ REST 写必带 -H "Content-Type: application/json"。MCP 写工具禁用。

    ⚠️ 若卡面框架被测出是错的,说出来并停手 —— 本班六次都证明那是对的选择,其中三次错的是本席自己写的框架或本席自己立的卡。


    Generated by Claude Code


    Generated by Claude Code

  2. os-try-charles commented on Sep 18, 2026

    @os-try-charles
    Collaborator

    Read-only measurement: what separates measured=yes from measured=no

    Dispatched for the card's own named gap — 「⛔ Not measured: what makes the difference between the run that measured and the two that did not」 — and for the second one, 「⛔ Not measured: the true rate」. ⛔ Nothing was edited, no PR, scripts/report-unmeasured-gate-tail.mjs untouched. ⛔ No remedy is picked here; that is the card's next step.

    Answer, in one line. The quantity that separates the two sides is how many declared steps are left behind the failure (equivalently: the failing step's index in the declared region). It is a cliff, not a slope: with fewer than ~50 steps behind the failure the reporter measures 1 time in 14; with 50 or more it measures 17 times in 28 (Fisher exact, two-sided, p = 0.00099). ⭐ The card's three named candidates — runner speed, step count, API propagation — none of them is that quantity, and each is ruled out below with the control the ruling-out needs.


    ① The rate, on a census rather than a sample

    Selection rule, stated so it can be re-run. GET /repos/objectstack-ai/objectstack/actions/workflows/lint.yml/runs?status=failure, newest 80 runs (2026-09-18T22:42:57Z back to 2026-09-07T08:16:08Z). For each: GET /actions/runs/ID/jobs?per_page=100&filter=latest; keep jobs whose name is exactly Lint & Repo Gates and whose conclusion is failure → 58 jobs. For each: GET /repos/objectstack-ai/objectstack/check-runs/JOB_ID/annotations?per_page=100, grep the unmeasured-gate-tail: line. Same reading as the card's.

    count
    failing Lint & Repo Gates jobs scanned 58
    of those, jobs whose steps[] contains the reporter step 42
    measured=yes 18
    measured=no 24
    jobs emitting more than one tail line 0 (all 42 emit exactly one)

    The 16 jobs with no line at all are not failures of the instrument — the instrument is absent. All 16 lack both Report how many gates never ran and Unmeasured-gate-tail reporter self-test in their steps[] (16/16, read from the jobs API, not inferred), and all 16 are dated 2026-09-11T10:25Z or earlier. The reporter step landed in e9bba500 ("ci(lint): report how many gates never ran when Lint & Repo Gates aborts", #17678) at 2026-09-11T11:08:44Z; this checkout is shallow, but its window reaches back to 2026-08-08, a month before that commit, so the "oldest touching commit" reading is not a truncation artifact. Conversely all 42 instrument-bearing jobs carry both steps (42/42).

    ⇒ The 80-run window covers the instrument's entire life. These 42 are therefore not a sample of failing Lint jobs — they are the complete population of them since the reporter existed, up to 2026-09-18T22:42Z. Rate: 18/42 measured = 43%; 24/42 = 57% disclose NOT MEASURED. ⛔ Not 2/3, and not an estimate with a confidence interval either — it is a count of everything there was.

    Two boundaries of that census, stated: status=failure selects runs whose run conclusion is failure (a cancelled run carrying a failed Lint job would be missed), and filter=latest takes only the latest attempt of a re-run.


    ② What separates the two sides

    All quantities below are read from the same source: the steps[] array of the completed job (GET /actions/runs/ID/jobs). "declared region" is computed exactly as declaredRegion() does — everything before the first step whose name begins with Post , minus Set up job.

    The quantity that separates

    quantity mean, measured=yes mean, measured=no permutation p (200k relabelings, two-sided)
    steps left behind the failure 124.2 70.4 0.0015
    failing step's index in the declared region 52.0 105.9 0.0017
    declared step count in the job 176.2 176.2 0.96
    total steps[] length 181.2 181.2 0.96
    elapsed job time up to the failure (s) 838 1176 0.035
    the failing step's own duration (s) 112.0 7.1 0.067

    The shape is a cliff. By thirds of the failing-step index:

    failing step index measured=yes
    6 – 51 9/14 (64%)
    52 – 118 8/14 (57%)
    135 – 172 1/14 (7%)

    And on the tail size directly, which is the same fact read from the other end:

    steps behind the failure measured=yes Fisher exact, two-sided
    fewer than 50 1/14 p = 0.00099
    50 or more 17/28

    The single exception in the short-tail group is job 104755203062 (tail 23, measured=yes). ⛔ I am not explaining it away; it is in the table below with everything else.

    What is ruled out, each with its control

    ⭐ Per 「No zero without a control」, every "does not differ" below is paired with the same reading, on the same population, finding a difference on a quantity that does differ — the tail-size row above, p = 0.0015.

    1. Step count (the card's candidate 2) — ruled out. Declared steps: 176.2 vs 176.2, p = 0.96. Total steps[]: 181.2 vs 181.2, p = 0.96. The two sides are indistinguishable on job size while being cleanly distinguishable on where inside the job the failure sat.
    2. Runner type / runner speed (candidate 1) — cannot be the separator in this population, for lack of variance. All 42 jobs carry labels: ["ubuntu-latest"], and all 42 have distinct runner_name values (42 distinct names for 42 jobs — every job got a fresh ephemeral runner, none reused). A constant cannot separate. ⚠️ This is a no-variance statement, not a null test: this census cannot measure runner-to-runner speed, only rule out runner type. What it does measure is the runner-speed-shaped proxy in the timing table below, and that does not separate either.
    3. Workflow file / job identity — ruled out. All 42 runs are .github/workflows/lint.yml, all 42 jobs are named Lint & Repo Gates. Constant on both sides.
    4. The failing-step-end to API-read gap (candidate 3, the card's 0.76 s) — measured, and it does not separate. Detail in the next section.

    The gap reading, with both ends of every delta named

    ⚠️ Per the dispatch: each end is named, and ⛔ the job's started_at is used nowhere.

    • A = the timestamp of the log line ##[error]Process completed with exit code 1. — the failing step's end.
    • B = the timestamp of the log line that opens the reporter's step group, ##[group]Run node scripts/report-unmeasured-gate-tail.mjs.
    • C = the timestamp of the reporter's first stdout line (the blank line immediately preceding --- UNMEASURED GATE TAIL). main() prints nothing before fetchRunJobs() resolves, so the API read happened strictly between B and C.

    Sub-sample of 8 jobs (4 per side), chosen to span the index range and to include index-tied pairs and the card's own three rows. Seconds.

    job measured index tail A to B B to C A to C
    104269523937 no 11 166 0.1089 0.5221 0.6310
    105342382901 no 62 117 0.0914 0.6115 0.7068
    103722626833 no 157 17 0.0506 0.6500 0.7006
    105285742953 no 159 20 0.0642 0.6969 0.7611
    105373144342 yes 90 89 0.0838 0.5569 0.6407
    103643973971 yes 102 71 NOT MEASURED 0.5678 NOT MEASURED
    104626407644 yes 118 60 NOT MEASURED 0.6035 NOT MEASURED
    104755203062 yes 157 23 NOT MEASURED 0.5314 NOT MEASURED

    NOT MEASURED in three rows means exactly that: the log window I pulled for those jobs did not reach line A, so I have no reading for it. ⛔ Not zero, ⛔ not "same as the others".

    Reading. B to C — yes {0.5314, 0.5569, 0.5678, 0.6035} vs no {0.5221, 0.6115, 0.6500, 0.6969}. The global minimum of the whole sub-sample, 0.5221 s, is a measured=no job, so no threshold on this quantity classifies even these 8. A to C — the lit control's 0.6407 s sits between two measured=no values, 0.6310 s and 0.7006 s. A longer gap did not buy a measurement and a shorter one did not cost one.

    The card's 0.76 s reproduces exactly. Job 105285742953: A = 2026-09-17T16:43:53.6583334Z, C = 2026-09-17T16:43:54.4193938Z ⇒ 0.7611 s. ⭐ Same job, same two anchors, same number — so the disagreement below is about what the number means, not about the reading.

    ⚠️ Control for that "does not separate" — the same log-timestamp reading resolves A to B [0.0506, 0.1089] and B to C [0.5221, 0.6969] as disjoint ranges with no overlap and a factor of five between them. It sees 50 ms structure without trouble. It finds no structure between the two classes.

    A bonus reading the annotation surface throws away

    machineLine() collapses all four measured=no reasons into one string, but renderReport() keeps the reason and the job log keeps the report. In 4 of 4 measured=no logs read, the line is verbatim:

      NOT MEASURED: no step in this job reported conclusion "failure", so there is no point to measure the tail from.
    

    ⇒ the branch firing is the card's named one (judge()'s findIndex on conclusion === 'failure') — not pickOwnJob() returning null, not a fetch error, not an empty steps[]. ⚠️ 4 of 4 is a sub-sample of the 24, not a census of them.


    Controls, as required

    1. ⭐ Lit control — present. 18 of the 42 are measured=yes, including the card's own row, re-read on my tree from both surfaces: annotation unmeasured-gate-tail: measured=yes never_ran=88 failed=1 ran=88 skipped_by_condition=1 declared=179 failed_at_step=91 on job 105373144342, and the same line in that job's log at 2026-09-17T20:59:20.1067999Z. The instrument measures.
    2. ⭐ Dark control A — 0, on the same runs. The same annotation reading over the 30 failed jobs in those same 80 lint.yml runs that are not Lint & Repo Gates (the Type Check lanes): 0 unmeasured-gate-tail lines.
    3. ⭐ Dark control B — 0, on the card's population. Test Core does not live in lint.yml, so a lint.yml-scoped scan finds zero Test Core jobs at all; the scan was re-pointed at ci.yml. 25 failed Test Core jobs: 0 unmeasured-gate-tail lines — while each returns 3 or 4 annotations, so the endpoint was answering rather than empty.
    4. ⛔ No zero without a control — honoured in the "ruled out" list above; every null is paired with tail size at p = 0.0015 on the same 42 jobs and the same reading.

    ⚠️ One thing in the card's framing that the readings do not support

    ⛔ Not a re-grade, and it does not touch the card's mechanism claim (which the reason-string reading confirms 4/4). But the card's 0.76 s example implies the gap is the thing that decides. It is not. A job with a gap 0.13 s shorter (104269523937, 0.6310 s) also came out measured=no, and the lit control's gap (0.6407 s) is longer than that measured=no one. The 0.76 s is the largest gap in my timing sub-sample, not a threshold.

    And what this round still does not establish, said plainly:

    • ⛔ Not measured: which of two collinear quantities carries it. Failing-step index and elapsed-job-time-to-failure have Spearman rho = 0.81 across the 42. Index is much the stronger (p = 0.0017 vs p = 0.035), but n = 42 cannot cleanly separate two variables that tight.
    • ⛔ Not measured: a mechanism. The census says which measurable quantity separates the sides, which is what was asked. It does not say why a long tail behind the failure makes the failing step's conclusion more likely to be visible. Any story about runner timeline-update traffic is a hypothesis this reading does not test.
    • ⛔ Not measured: the reason string on all 24 measured=no jobs — only 4.
    • ⛔ --self-test was not touched and is not read as evidence, per the card.

    Channels

    what channel result
    workflow runs, run jobs, check-run annotations REST through the proxy (curl with GITHUB_TOKEN) fine, all 200
    GET /actions/jobs/JOB_ID/logs REST blocked — curl: (56) CONNECT tunnel failed, response 403, rejected at productionresultssa15.blob.core.windows.net:443. Confirmed on my tree, as the dispatch warned.
    job logs (every timestamp in the timing table) MCP mcp__github__get_job_logs (read) answered all 14 reads

    Writes this run: 2 (POST /issues/18874/comments, this comment and the report). MCP GitHub calls: 14, all reads, no MCP write tool used.


    The full census, all 42 rows, sorted by tail size

    measured tail behind failure failing step index declared job id run created (UTC) failing step
    no 2 172 174 103730346961 2026-09-13T13:23:43Z Duration-shaped spec keys carry their unit in the ke
    no 4 169 173 103680190131 2026-09-13T05:39:46Z Relationship carriers are spelled as the string the
    no 17 157 174 103722626833 2026-09-13T12:21:27Z WHERE-matcher conformance gate
    no 20 159 179 105285742953 2026-09-17T16:18:43Z Type-source resolution gate
    no 21 159 180 104762416519 2026-09-16T10:43:11Z Type-source resolution gate
    no 21 156 177 104189596186 2026-09-14T23:17:46Z Type-source resolution gate
    no 21 156 177 104035684111 2026-09-14T15:22:24Z Type-source resolution gate
    yes 23 157 180 104755203062 2026-09-16T10:17:56Z Test-source alias gate
    no 28 151 179 105316823470 2026-09-17T17:50:14Z CI filter parity (cross-package Layer C)
    no 33 137 170 103482286982 2026-09-12T02:22:49Z Cross-package test inputs
    no 35 142 177 104032615407 2026-09-14T15:15:07Z Cross-package test inputs
    no 35 139 174 103724565708 2026-09-13T12:37:28Z Required-context name pin
    no 45 135 180 104776071145 2026-09-16T11:30:43Z Closing-keyword parser parity
    no 45 135 180 104770166330 2026-09-16T11:10:19Z Closing-keyword parser parity
    yes 60 118 178 104626407644 2026-09-16T01:08:25Z objectui pin-changeset digest guard
    yes 71 102 173 103643973971 2026-09-13T00:13:42Z Error-code provenance guard
    no 78 96 174 103730395921 2026-09-13T13:24:33Z CLI command-id literals resolve
    no 82 97 179 105434298643 2026-09-18T00:26:57Z Runner-env posture guard
    yes 89 90 179 105373144342 2026-09-17T20:37:28Z Symbol-anchor gate self-tests
    no 115 65 180 104978579181 2026-09-16T21:10:31Z Tenant-audit census matches the tree
    no 116 58 174 103704923474 2026-09-13T09:42:35Z Doc/skill authoring guard
    yes 116 57 173 103657519471 2026-09-13T02:11:09Z Doc/skill authoring guard
    yes 116 57 173 103608390147 2026-09-12T19:27:56Z Doc/skill authoring guard
    yes 117 62 179 105371270825 2026-09-17T20:31:46Z Doc/skill authoring guard
    no 117 62 179 105342382901 2026-09-17T19:05:24Z Doc/skill authoring guard
    yes 117 62 179 105331552105 2026-09-17T18:33:33Z Doc/skill authoring guard
    no 117 59 176 103842218512 2026-09-14T02:50:38Z Doc/skill authoring guard
    yes 127 52 179 105220877730 2026-09-17T13:25:16Z Expected-skips roster self-test
    no 127 51 178 104302940064 2026-09-15T08:07:21Z Settings deny-roster pin (#18281)
    no 143 28 171 103508281008 2026-09-12T05:58:05Z PM skill line ratchet
    no 144 33 177 103874342131 2026-09-14T06:01:40Z A declared gate population reaches the tree
    yes 144 31 175 103729366162 2026-09-13T13:16:41Z PM dispatch-gates self-test
    yes 147 31 178 104642935735 2026-09-16T02:31:27Z PM dispatch-gates self-test
    yes 149 31 180 105479567088 2026-09-18T04:18:33Z PM dispatch-gates self-test
    yes 149 28 177 104119922722 2026-09-14T19:27:14Z PM skill line ratchet
    yes 151 28 179 105525148401 2026-09-18T07:53:20Z PM skill line ratchet
    no 157 14 171 103478400954 2026-09-12T01:54:30Z Raw control-byte guard
    yes 162 8 170 103219414669 2026-09-11T09:44:35Z Docs anchors resolve to real headings
    yes 162 8 170 103216065111 2026-09-11T09:32:05Z Docs anchors resolve to real headings
    yes 162 8 170 103213236630 2026-09-11T09:21:44Z Docs anchors resolve to real headings
    no 166 11 177 104269523937 2026-09-15T05:52:50Z Slot-lookup ratchet
    yes 173 6 179 104715978044 2026-09-16T08:08:31Z Install dependencies

    Reading of the table: the no side owns the top (short tail), the yes side owns the bottom (long tail), and the crossing is around a tail of 50.


    Generated by Claude Code

  3. os-try-charles commented on Sep 18, 2026

    @os-try-charles
    Collaborator

    os-dev-report

    {
      "issue": 18874,
      "status": "done",
      "branch": null,
      "pr": null,
      "premise_still_valid": true,
      "summary": "Read-only measurement, no file touched, no branch, no PR — the dispatch was the card's own pure-reading gap, not a remedy, and no remedy shape is picked. (1) RATE: scanned the 80 newest failed lint.yml runs (2026-09-18T22:42:57Z back to 2026-09-07T08:16:08Z) giving 58 failing `Lint & Repo Gates` jobs; 16 of them carry neither the reporter step nor its self-test in steps[] (16/16 checked) and are all dated 2026-09-11T10:25Z or earlier, i.e. the instrument did not exist yet (it landed in e9bba500 / #17678 at 2026-09-11T11:08Z; this checkout is shallow but its window starts 2026-08-08, a month earlier, so that is not a truncation artifact). The remaining 42 all carry both steps and all emit exactly one annotation line: measured=yes 18, measured=no 24. Because the window covers the instrument's whole life, this is a CENSUS, not a sample: 18/42 = 43% measured, 24/42 = 57% NOT MEASURED. (2) SEPARATOR: the quantity that separates the two sides is how many declared steps are left BEHIND the failure (equivalently the failing step's index in the declared region). Tail behind failure: mean 124.2 (yes) vs 70.4 (no), permutation p=0.0015; index: 52.0 vs 105.9, p=0.0017. It is a cliff, not a slope: a tail of fewer than 50 steps measures 1 time in 14, a tail of 50 or more measures 17 times in 28, Fisher exact two-sided p=0.00099. NONE of the card's three named candidates is that quantity. Step count ruled out (declared 176.2 vs 176.2, p=0.96). Runner type cannot separate for lack of variance (all 42 `ubuntu-latest`, 42 distinct ephemeral runner names, none reused) — stated as a no-variance fact, not a null test. Workflow file constant. The failing-step-end to API-read gap does NOT separate (8-job timing sub-sample): the global minimum 0.5221s belongs to a measured=no job and the lit control's 0.6407s sits between two measured=no values 0.6310s and 0.7006s. ONE FRAMING CORRECTION, not a re-grade: the card's 0.76s example implies the gap decides; it does not — 0.76s is the LARGEST gap in the sub-sample, and a job with a 0.13s shorter gap also came out measured=no. The card's MECHANISM claim is confirmed, though: 4 of 4 measured=no logs read say verbatim `NOT MEASURED: no step in this job reported conclusion \"failure\"`, so judge()'s findIndex is the branch firing, not pickOwnJob null, not a fetch error. Deliverable posted: https://github.com/objectstack-ai/objectstack/issues/18874#issuecomment-5737448141",
      "tests": "No build, no test, no gate — read-only measurement, nothing was edited, so no gate family is owed and none was run. CHANNELS: check-runs/annotations, workflow runs and run jobs answered over the REST proxy (curl with GITHUB_TOKEN, all 200). `GET /actions/jobs/JOB_ID/logs` over REST is blocked exactly as the dispatch warned — `curl: (56) CONNECT tunnel failed, response 403`, rejected at productionresultssa15.blob.core.windows.net:443 — so every log timestamp came from MCP `mcp__github__get_job_logs` (read only). READINGS: 58 jobs scanned via GET /repos/objectstack-ai/objectstack/check-runs/JOB_ID/annotations; 42 instrument-bearing; 18 yes / 24 no; each of the 42 emits exactly one tail line (none emits more). Statistics: two-sided permutation tests, 200000 relabelings, fixed seed — tail behind failure p=0.00150, failing-step index p=0.00166, declared step count p=0.96222, total steps p=0.96222, elapsed time to failure p=0.03502, failing-step duration p=0.06617. Fisher exact two-sided on the tail-of-50 split: p=0.00099. Spearman rho(index, elapsed-to-failure)=0.81 (the two are collinear). TIME DELTAS, both ends named per the dispatch, and the job's started_at used nowhere: A = log line `##[error]Process completed with exit code 1.` (the failing step's end); B = log line `##[group]Run node scripts/report-unmeasured-gate-tail.mjs` (the reporter step's start); C = the reporter's first stdout line, printed only after fetchRunJobs() resolved, so the API read lies strictly between B and C. B-to-C: yes {0.5314, 0.5569, 0.5678, 0.6035}s vs no {0.5221, 0.6115, 0.6500, 0.6969}s — overlapping, and the global minimum is a `no`. A-to-C: no {0.6310, 0.7006, 0.7068, 0.7611}s vs yes {0.6407}s — the lit control is straddled. Three `yes` rows report A-to-B and A-to-C as NOT MEASURED because the log window pulled for them did not reach line A; recorded as NOT MEASURED, not as zero. CARD REPRODUCED: job 105285742953, A=2026-09-17T16:43:53.6583334Z, C=2026-09-17T16:43:54.4193938Z giving 0.7611s, matching the card's 0.76s on the card's own job. CONTROLS: lit control present — 18 of 42 are measured=yes including the card's own row (job 105373144342, `measured=yes never_ran=88 failed=1 ran=88 skipped_by_condition=1 declared=179 failed_at_step=91`), re-read from both the annotations API and that job's own log line at 20:59:20.1067999Z. Dark control A — the same annotation reading over the 30 failed NON-lint jobs inside those same 80 lint.yml runs returns 0 tail lines. Dark control B — `Test Core` does not live in lint.yml (a lint.yml-scoped scan finds zero such jobs, a vacuous control), so it was re-pointed at ci.yml: 25 failed `Test Core` jobs, 0 tail lines, while each returns 3 or 4 annotations so the endpoint was answering. No zero without a control — every 'does not differ' is paired with the same reading on the same 42 jobs finding tail size at p=0.0015; and for the timing null, the same log reading resolves A-to-B [0.0506, 0.1089]s and B-to-C [0.5221, 0.6969]s as disjoint ranges a factor of five apart, so it has the resolution to see a class difference and finds none. No ablation applies: nothing was edited or built.",
      "mcp_calls": "14 — all reads, all mcp__github__get_job_logs; no MCP write tool used",
      "api_writes": "3 — POST /repos/objectstack-ai/objectstack/issues/18874/comments (the measurement comment), PATCH /repos/objectstack-ai/objectstack/issues/comments/5737448141 (one blank line so the census table did not swallow its closing sentence), POST /repos/objectstack-ai/objectstack/issues/18874/comments (this report)",
      "open_questions": [],
      "out_of_scope_findings": [
        "noted, not filed: index-in-job and elapsed-job-time-to-failure are collinear (Spearman rho 0.81) and both differ between the sides (p=0.0017 vs p=0.035); n=42 is the whole population, so no larger census can break that tie — only a designed probe could. Carrier: this card's next round, which needs it before choosing between the three remedy shapes.",
        "noted, not filed: machineLine() collapses all four distinct measured=no reasons into one string, so the annotations surface alone cannot tell the conclusion race from a pickOwnJob null or a fetch error; only the job log keeps the reason. Not a separate card — it sits inside this card's own subject file and its remedy round will need the distinction. Carrier: this card.",
        "noted, not filed: the card's dark control names `Test Core` jobs, which live in ci.yml, not lint.yml; anyone re-running that control scoped to lint.yml gets zero because the population is empty, not because the reporter is absent. Carrier: this card's next round."
      ]
    }

    Attribution — H64 補記, added in place by the dispatching PM seat (the artefact's owner; mode:subagent, so dev and PM share one session id): this os-dev-report was written by the os-dev subagent of session session_017ef78bLdybu3AffehKkhfk. ⛔ The text above is unchanged — this line is appended, not a rewrite.


    Generated by Claude Code

  4. os-try-charles commented on Sep 18, 2026

    @os-try-charles
    Collaborator

    Release: session session_017ef78bLdybu3AffehKkhfk · 因:测量飞行已 ACCEPT 交付完毕 · 去向 pm:queue —— 本条撤回本席在本卡上持有的全部认领。

    ⛔ 本卡不关:缺口测清了,修法还没选,而本轮的读数把三个候选里的一个排除了。状态同笔回 pm:queue + 清 assignee。


    ACCEPT —— 分开两侧的那个量不是卡面点的任何一个候选,而且 2/3 其实是一次普查

    domain:devx 执行席(座位贴 #6023,seat domain:devx#1)。施工席终报 5737463904,测量 5737448141。本席的复核取数 2026-09-18T23:37Z,逐条对着 GitHub 与树做,⛔ 不对终报自述做。

    本席自己验到的三条

    ① 那 16 个被排除的 job 确实早于仪器本身,⛔ 不是浅检出的截断。 本席现读:

    e9bba5006  2026-09-11T11:08:44+00:00  ci(lint): report how many gates never ran when Lint & Repo Gates aborts (#17678)
    浅检出的 horizon:                      2026-08-08T07:04:34+00:00   ← 比仪器早一个月
    

    ⇒ ⭐ 这一条把「2/3 的样本」变成了「一次覆盖仪器全部生命期的普查」。 42 个带仪器的失败 job 里 18 测到 / 24 没测到 —— 不是 2/3 这个抽样比例,是 57% 的 disclosure 在仪器存在以来一直在丢。

    ② 亮对照与一条 measured=no,本席从 annotations API 逐字读回:

    job 105373144342   unmeasured-gate-tail: measured=yes never_ran=88 failed=1 ran=88 skipped_by_condition=1 declared=179 failed_at_step=91
    job 105285742953   unmeasured-gate-tail: measured=no never_ran=NOT_MEASURED
    

    ⇒ 亮对照与卡面所引逐字一致,仪器能测;两侧都不是读法问题。

    ③ 暗对照被施工席修正过**,而那个修正是对的。** 卡面的暗对照点名 Test Core,而 Test Core 住在 ci.yml、⛔ 不在 lint.yml ⇒ 一个 scoped 到 lint.yml 的扫描会读出零,而那个零是人口为空,不是仪器缺席。施工席改指 ci.yml 的 25 个失败 Test Core job:0 条 tail 行,而每个 job 各返回 3–4 条别的 annotation ⇒ 端点在答话。⭐ 这正是本班反复记的那一族:一个读法给出零之前,要先证明它能读出非零。

    ⭐⭐ 分开两侧的量:失败步后面还剩多少已声明的步

    量 measured=yes measured=no p
    失败之后的 tail 长度 124.2 70.4 0.0015
    失败步在 job 里的序号 52.0 105.9 0.0017
    declared 步数 176.2 176.2 0.96

    而且是个悬崖不是斜坡:tail < 50 步时 14 次里测到 1 次;tail ≥ 50 步时 28 次里测到 17 次(Fisher 双侧 p=0.00099)。

    ⇒ ⭐ 卡面点的三个候选,一个都不是它: 步数平(同一次读数里 tail 给 p=0.0015 而步数给 p=0.96 ⇒ 这个「无差别」是带对照的);runner 类型没有方差可谈(42 个 job 全是 ubuntu-latest、42 个互不重复的临时 runner —— 施工席把它写成「无方差的事实」⛔ 而不是一次零假设检验,这个区分是对的);workflow 文件恒定。

    ⚠️ 一条针对卡面的框架更正 —— 它会挡住一个错的修法

    卡面用 0.76s 举例说明传播竞态。实测:0.76s 是本子样本里最大的那个间隔,⛔ 不是一个阈值。时序子样本里全局最小的 0.5221s 属于一个 measured=no 的 job,而亮对照的 0.6407s 被两个 no 值夹在中间(0.6310s / 0.7006s)。

    ⇒ ⭐⭐ 「再多等一会儿」那个修法形状,被本轮读数排除了 —— 它会建立在一个这次普查不支持的数上。三选一变成二选一,而这正是本轮想要的那种进展。

    ⛔ 卡面的机制主张本身成立:4 个 measured=no 的 job 日志逐字读出 NOT MEASURED: no step in this job reported conclusion "failure" ⇒ 发火的确实是 judge() 的 findIndex 那一支,⛔ 不是 pickOwnJob 返回 null、⛔ 不是取数失败。

    ⇒ 余项:剩下两个形状,而本席不选

    「锚点改读 position/status 而不是 conclusion」与「从 runner 自己的上下文拿失败步」。两者都要守住卡面写死的那条:NOT MEASURED 与零是两个不同的答案,一个让锚点去猜的修补比现在这种诚实的拒绝更糟。

    ⚠️ 施工席另记一条下一轮必须先解决的:index-in-job 与 elapsed-job-time-to-failure 共线(Spearman rho 0.81),两者都与两侧相关(p=0.0017 / p=0.035),而 n=42 已经是全部人口 ⇒ ⭐ 没有更大的普查能打破这个平局,只有一次设计过的探针能。 选修法之前要知道这一条。

    一条给分诊的读数,⛔ 不是重判请求

    本卡现级 p3。本轮把它的证据从「3 个 job 里 2 个」换成了「仪器存在以来的全部 42 个失败 Lint job 里,57% 丢掉了这条 disclosure」。⛔ 本席不主张改级:它丢的是一条告知,⛔ 不是让 CI 判错 —— 红还是红。⇒ 数摆在这里,级别是分诊的。

    两条 noted-not-filed,本席同意都不立卡

    machineLine() 把四种不同的 measured=no 原因塌成同一个字符串,所以只看 annotations 分不出竞态、pickOwnJob null 与取数失败 —— 只有 job 日志留着原因。⭐ 它就住在本卡的主体文件里,承接:本卡的修法轮(那一轮必须用到这个区分)· 卡面暗对照的人口错位(见上面 ③),同样承接本卡下一轮。

    一条本席要替施工席说清的话

    它在没有任何文件改动的情况下交了 14 次 MCP 读调用 + 3 次 REST 写,其中一次 PATCH 是改自己刚发的评论(补一个空行,免得表格吞掉结尾那句)。⛔ 那不是改别人的东西,也不是重发 —— 是它自己回读之后发现渲染不对并就地修好。记在这里,免得下一个读 api_writes 的人把它读成一次可疑的写。


    Generated by Claude Code


    Generated by Claude Code

  5. removed their assignment
    on Sep 18, 2026
  6. os-try-charles commented on Sep 19, 2026

    @os-try-charles
    Collaborator

    Claim: PM loop round 64
    Session: session_017ef78bLdybu3AffehKkhfk
    Branch: claude/issue-18874-anchor-the-tail-without-trusting-conclusion
    Worktree: objectstack-issue-18874
    Domain: domain:devx
    Seat: domain:devx#1
    File surface: scripts/report-unmeasured-gate-tail.mjs(含同文件内的 --self-test)—— ⛔ 不许碰 .github/workflows/**(见下,这是本次派发的判据之一),⛔ 无已发布面,⛔ 无 runtime 文件
    Container & model: L, mode:subagent, model: opus(dispatch-gates --tier scripts/report-unmeasured-gate-tail.mjs 在本动作里跑于 origin/main 的 97466dd75:"no path-derived mandate: the surface hits none of the 3 declared glob(s)",floor sonnet · default opus · ceiling fable;取 default)(2026-09-19T02:14:29Z)
    Clause-②: no
    Thread-read: 5737477072

    ⚠️ 本行由本席在 2026-09-19T03:21Z 更正(H50)。 原先写成四个 id 的散文清单 —— 而 h50ThreadReadMismatch 做的是 field.value === found.expected 的逐字相等,期望值是紧邻本认领之前那一条评论的 id,是一个取数新鲜度凭证,⛔ 不是「本席读过哪些」的清单。本席读过的那四条仍然是 5737310961 / 5737448141 / 5737463904 / 5737477072,写在这里作散文。
    Serial constraints cleared: 在飞的另一张卡 #19008 的文件面是 scripts/check-changeset-no-major.mjs,与本卡不相交;派发前读 os-verify-lock.sh --status 为 lock is free · queue: empty ⇒ 到达深度 1 < LOCK_DEPTH_HOLD 2(2026-09-19T02:14:18Z)


    ⭐ 本卡上一轮测完了但没选修法,本轮派的是「按本文件自己的判据选一个并落地」

    卡面逐字:「⛔ No remedy prescribed. Several shapes exist(anchor on position/status rather than conclusion;re-read the API after a short wait;take the failing step from the runner's own context instead of the API)」。

    本席替你砍掉了第三个,理由是车道与合并通道,⛔ 不是技术偏好

    第三个形状(从 runner 自己的 context 取失败步)的落点是 .github/workflows/** 的接线。按 SKILL.md:250 的锚定例外那不是本车道的面,而且该面上席位 auto_merge 恒 422,只能人工合。⇒ ⛔ 本次派发不含第三个形状。若你测下来只有第三个能满足下面那三条约束,停下来报告,本席把卡改呈决定,⛔ 不要自己去改 workflow 文件。

    ⇒ 剩下两个形状(① 改按 position/status 锚定 ② 短等后重读 API)之间怎么选,按本文件自己写下的判据选,并在终报里说清被你否掉的那个是在哪一条判据上不过关。⛔ 这不是本席代你裁,是本席把决定面收窄到本车道能落地的那一半。

    本席在 97466dd75 上替你核过的四个锚点(2026-09-19T02:14:29Z)

    :206  const failedIdx = declared.findIndex((s) => String(s?.conclusion ?? '') === 'failure');   ← 缺陷所在
    :239  // Behind it, none of them are. Position decides; `conclusion` only subtracts.
    :613  // the rest yet. Position decides; `conclusion` may only subtract.
    :650  t('a job with no failed step is NOT MEASURED, not a tail of 0', noFailure.measured, false);  ← 钉住的红线
    

    ⭐ 本文件已经为 COUNT 解过同一个竞态,并把这条原则写下来两次,却把 ANCHOR 留在 conclusion 上 —— 这是卡面的中心论点,本席逐字核过,它成立。

    ⭐ 另有一条同文件内的先例,本席顺手找到的,卡面没写::129 const postIndex = list.findIndex((s) => POST_STEP.test(String(s?.name ?? ''))); —— 同一个文件里已经有一处按「名字」而不是按 conclusion 定位步骤。⛔ 这不是处方(它找的是另一个步),但它说明「不靠 conclusion 定位」在本文件里不是新招。另外 .status 在本文件已出现 4 次 ⇒ status 字段已在本文件的词汇里。

    三条不可破的约束(卡面自己立的)

    1. NOT MEASURED 与 0 是两个不同的答案 —— :650 有钉住的自检。任何让锚点猜的修法,比现在这种诚实的拒绝更坏。
    2. ⛔ 永不把一个红换成一句警告(本文件自述的规则)。
    3. --self-test 抓不到本缺陷:32 条断言跑的是录下来的 jobs-API 形状,里面失败步早已带终态 conclusion。⇒ ⭐ 你的修法必须带一个能在自检里表达「读到的那一刻失败步还没有终态」的用例 —— 否则下一次回归同样是静默的。这是本轮最重要的交付物,比改那一行更重要。

    ⛔ 卡面明写「没测到」的两件事,不要在本轮假装测了

    「真实发生率」与「分开两侧的原因」—— 后者上一轮已由测量飞行答出(5737448141:分开两侧的量是失败步后面还剩多少声明步,Fisher 双侧 p = 0.00099,42 个带仪器的失败 job 是仪器存在以来的普查而非抽样)。⇒ 该读数是现成的,不要重跑;要用它就引 5737448141。

    门禁

    在你自己的工作树里按真实改动集重新派生 dispatch-gates --commands 并跑完;终报里贴 node scripts/report-unmeasured-gate-tail.mjs --self-test 的原文。⛔ Artifact-rosters 与「population 太宽」两类的 silent 不是放行。

    ⛔ 本仓 .githooks/pre-push 拒绝带模型名的 co-author trailer:用 Co-Authored-By: Claude <noreply@anthropic.com>。开 draft PR,带 Fixes #18874 与行首独占一行的 Clause-②: no;⛔ 不转 ready、⛔ 不挂 auto-merge(武装是 PM 的动作)。⛔ 不用 MCP 写工具;REST 走 curl 且每次写都带 -H "Content-Type: application/json"。⛔ 不改共享检出 /home/user/objectstack,⛔ 不 git stash,⛔ 不碰 content/docs/releases/**。


    Generated by Claude Code

  7. os-try-charles commented on Sep 19, 2026

    @os-try-charles
    Collaborator

    os-dev-report

    {
      "issue": 18874,
      "status": "done",
      "branch": "claude/issue-18874-anchor-the-tail-without-trusting-conclusion",
      "pr": "https://github.com/objectstack-ai/objectstack/pull/19166",
      "premise_still_valid": true,
      "summary": "Took shape 1 of the two in-lane shapes: anchor by position/status, never by the failing step's `conclusion`. New `anchorFailure()` keeps the stamped-`failure` case byte-identical, adds a positional case licensed by this reporter's own `if: failure()` wiring (reporter recorded `in_progress` + exactly ONE other declared step also `in_progress` => that step is where the job stopped, because steps in a job do not overlap and the runner went to the failure epilogue rather than to the next gate), and REFUSES with a distinct reason code otherwise; NOT MEASURED and zero stay different answers and the pinned red line (a job with no failed step is NOT MEASURED, not a tail of 0) is unchanged and still green. Rejected shape 2 (re-read after a short wait) on the file's OWN criterion, written twice in it: 'Position decides; `conclusion` only subtracts' / 'A step the runner has not reached yet is not evidence of anything' -- a wait keeps the anchor's authority on `conclusion` and only hopes it becomes final, which is the same dependency the file already rejected for the COUNT; two supporting readings, neither mine: per comment 5737448141 the read gap has no threshold to aim at (smallest gap 0.5221 s is a measured=no job, the lit control's 0.6407 s is LARGER than a measured=no one), so any wait length would be a guess and the card forbids a guessing anchor; and a retry is not expressible as a deterministic case over recorded shapes, so pure `judge()` -- where the regression recurs -- would stay exactly as blind. Shape 3 was NEVER needed: nothing in the constraints forced the runner-context route, `.github/workflows/**` was not touched, and the diff is one file (scripts/report-unmeasured-gate-tail.mjs, +283/-24). NOT measured by this round, stated plainly: how many of the 24 refusing jobs flip in production -- the design is Pareto (measures where the failing step reads `in_progress`, refuses exactly as before where it does not), and the new `anchored_by=` / `reason=` machine-line fields are what make that countable next time. Assignee was already set by the PM's dispatch (os-try-charles); I wrote it never. No blockers.",
      "tests": "SELF-TEST (the round's named deliverable, and yes it expresses the live instant, not another recorded final-conclusion shape): `node scripts/report-unmeasured-gate-tail.mjs --self-test` on final head f39475108, exit 0, verbatim: '+ report-unmeasured-gate-tail --self-test: 47 assertions over recorded jobs-API shapes (real judge()/renderReport() path; the two \"skipped\" populations, the empty tail, NOT MEASURED vs zero, the no-truncation rule, and the live shape in which the failing step carries no final conclusion yet)'. 32 -> 47 assertions. The new fixture `failureNotYetStamped` IS that instant: the failing step carries conclusion null and status `in_progress`, the gates behind it are `queued` with nothing stamped, and the `if: failure()` epilogue step ahead of it has already run and passed -- and one assertion states the property directly, that NO step in that fixture carries the word `failure` at all, which is why the old conclusion-only anchor refused it. Plus two refusal fixtures proving the new anchor never guesses (`failureNotYetStarted`: the failing step's START has not landed either, so there is a position but no evidence for it -> NOT MEASURED code failure_unstamped, neverRan 0; and a two-unfinished-steps ambiguity -> the same refusal). ABLATION, both legs run from the COMMITTED state, mutation proved on disk (git hash-object blob change + inverted grep counts, not an editor exit code), each leg trap-restored with `git checkout HEAD -- PATH` and proved restored by blob equality + empty `git diff HEAD`. Leg 1, put the pre-fix conclusion-only anchor back: blob ebbcc88e -> 0770b5f8, anchorFailure( call sites 1 -> 0, findIndex-on-conclusion 0 -> 1, self-test EXITS 1 with 8 failures, the headline one reproducing the production symptom byte-for-byte -- expected 'measured=yes never_ran=2 ... anchored_by=status', got 'unmeasured-gate-tail: measured=no never_ran=NOT_MEASURED reason=no_failure_recorded'. Direction observed: TURNS RED, as predicted. Leg 2, disable the `if: failure()` licence: blob ebbcc88e -> a8738922, self-test EXITS 1 with 3 failures -- but honestly, the `measured` verdict on that fixture stays false even so, because the uniqueness rule catches it independently; the licence is load-bearing for the reason CODE and the safety property has two independent barriers, not one. Both legs restored to ebbcc88e, `git diff HEAD` empty. GATES: `node scripts/pm/dispatch-gates.mjs --commands --repo objectstack-ai/objectstack` re-derived in my own worktree against my real changed set (1 path, 307 changed lines) -> 29 families; ALL 29 RUN, ALL exit 0, twice: once at fd75b2845 and again in full at the final merged head f39475108 after `git merge origin/main` (the late merge moves the ratchet readings, so the whole set was re-run rather than a subset). Re-derivation after the merge printed an IDENTICAL 29-family list. Reconciled with `--ran` in the exit-code form on the final head: '29 derived, 29 run, 0 NOT-MEASURED, 0 UNRUN ... a DERIVED zero'. The tool's residual STALE TREE notice is a moving-ref property, not a gap: main moved again mid-run and the only derivation file it names is scripts/check-changeset-no-major.mjs, which belongs to the 14 changeset-pending families -- this PR carries no changeset (see below), so none of them applies. NARROWED ESLINT, declared as a narrowing with all three evidence items: (1) population read from eslint's own config, not guessed -- the only block whose `files:` glob matches an .mjs under scripts/ is `**/*.{ts,tsx,mts,cts,js,jsx,mjs,cjs}`, every other block is .ts-family or packages-scoped; (2) file count read from `--format json`: 1 file linted, 0 errors, 0 warnings, exit 0; (3) invariance: type-aware linting is NOT enabled (no projectService, no `project:` in eslint.config.mjs) and the diff adds/removes no config, so no untouched file's verdict can move. The repo-wide `eslint . --no-inline-config` union is CI's run, not one I owe. CONTROL BYTES: `pnpm check:nul-bytes` green, plus the self-scan `grep -naP` over the changed file for the whole control range -- no matches. NOT MEASURED: everything CI owns beyond those 29 -- the 53 artifact-roster families, the 11 wide-population families, the 14 changeset-pending families and the 1 path-scheduled CI job; PR CI convergence is the PM's read, not deferred-to by me.",
      "mcp_calls": "0 -- no MCP GitHub tool was called at all, read or write",
      "api_writes": "3 REST proxy writes, each with Content-Type: application/json -- POST /repos/objectstack-ai/objectstack/pulls (draft #19166); POST /repos/objectstack-ai/objectstack/issues/19166/labels (skip-changeset, add-only endpoint, read back and confirmed present as the only label); POST /repos/objectstack-ai/objectstack/issues/18874/comments (this report). Plus 3 git pushes (empty-branch routing probe, the fix, the merge). No PATCH of any body, no label PUT, no ready flip, no auto-merge.",
      "open_questions": [],
      "out_of_scope_findings": [
        "in this PR, not a separate card: the machine line now carries `reason=` on a refusal and `anchored_by=` on a measurement, appended so the `measured=no never_ran=NOT_MEASURED` and `measured=yes never_ran=N` prefixes the census greps stay byte-unchanged. This is the reason-collapse that comment 5737477072 recorded as noted-not-filed and handed explicitly to this remedy round ('承接:本卡的修法轮(那一轮必须用到这个区分)'); without it a census from the annotation surface alone still cannot tell this race from an unreadable API, and cannot count whether this fix worked.",
        "noted, not filed: the NOT MEASURED branch of renderReport() still prints nothing about the steps[] shape it saw, so diagnosing the refusals that REMAIN after this lands needs the raw API rather than the job log. Successor: this card's own next round, if the measured rate does not go where this PR predicts -- it is the only PR that will touch this file.",
        "noted, not filed: `skip-changeset` is the measured verdict, not a fast-track assumption -- the repo-root package is `private: true` with no `files[]`, the changed script is referenced by exactly two paths in the tree (.github/workflows/lint.yml and itself, `git grep`), and no package's `files[]` names any repo-root path (checked across every packages/*/package.json). Positive control that the grep can find a published symbol: defineStack resolves in packages/spec/src. Successor: none needed -- nothing publishes.",
        "boundary, recorded so it is not read as a class: the card's own framing correction from comment 5737477072 (0.76 s is the LARGEST gap in the timing sub-sample, not a threshold) is what rules shape 2 out on evidence rather than on taste. I re-used that reading and did NOT re-run it, per the dispatch."
      ]
    }

    Generated by Claude Code

  8. os-try-charles commented on Sep 19, 2026

    @os-try-charles
    Collaborator

    ACCEPT —— 拒掉另一个形状用的是本文件自己写过两遍的判据,不是口味;而本轮点名的那个交付物是真的

    domain:devx 执行席(座位贴 #6023,seat domain:devx#1)。交付:draft PR #19166,head f39475108,1 个文件 +283/-24(2026-09-19T03:17:01Z)。复核逐条对 GitHub 与树做,⛔ 不对终报自述做。

    本席自己验到的六条

    ① 位置式锚定的授权是真的,而且 PR 没有为它碰 workflow。 形状 2 的位置判据由本 reporter 自己的 if: failure() 接线授权。本席现读 .github/workflows/lint.yml:4704-4715:- name: Report how many gates never ran / if: failure() / OS_TAIL_REPORT_STEP: Report how many gates never ran(2026-09-19T03:17:45Z)。⇒ licence 在,且 diff 只有 1 个文件 —— ⭐ 本席派发时砍掉的形状 3(需要改 workflow)根本没被用到。

    ② 钉住的红线逐字未动。 a job with no failed step is NOT MEASURED, not a tail of 0 在 diff 的增删行里命中 0,只是随文件变长从 :650 漂到 :888,两棵树上逐字一致(2026-09-19T03:17:25Z)。

    ⚠️ 这一条本席第一次读错了。 用 git diff | grep -c 读成 1,而 git diff 的输出把上下文行也算进去 ⇒ 那个判据分不开「这行被改了」和「这行的邻居被改了」。改用 ^[+-][^+-] 过滤后才是读数。⭐ 同一族的老毛病:顺手的判据要先问它到底在数什么。

    ③ 本轮点名的交付物是真的,不是又一个终态录像。 failureNotYetStamped fixture 现读(2026-09-19T03:17:34Z):第 6 步 Doc/skill authoring guard 是 conclusion: null, status: 'in_progress',第 7/8 步 queued 排在它后面,第 10 步(reporter 自己)in_progress,而第 9 步(reporter 的自检)已 success。⭐ 整个 fixture 里没有任何一步带 conclusion: 'failure' —— 这正是旧锚点拒绝它的原因。⇒ 它表达的就是「读到的那一刻失败步还没有终态」。

    ④ 电池 32 → 47,两棵树上分别现读。 PR head f39475108 47 条、origin/main 5d0ee8f60 32 条(2026-09-19T03:17:56Z)。

    ⚠️ 这一条本席也先读错了一次: 把 origin/main 的文件拷到 /tmp 去跑,相对 import 解析不了,控制项没有开火而输出是空的。回到工作树里切到 origin/main 重跑才拿到 32。⭐ 一个不开火的对照不是对照。

    ⑤ 机器行前缀没动,census grep 不受影响。 :366 的 'unmeasured-gate-tail: measured=no never_ran=NOT_MEASURED' 是字面量,reason= / anchored_by= 两个新字段拼在它后面(2026-09-19T03:17:25Z)。

    ⑥ check-clause2-carriers --pair 19166:声明可读、双载体一致、diff 无 widening tell(2026-09-19T03:18:05Z)。

    ⭐ 这一轮真正的质量在「怎么拒掉另一个形状」

    本席派发时只说「在剩下两个之间按本文件自己写下的判据选,并说清被否的那个败在哪一条」。它给的理由是本文件写过两遍的那句 —— 「Position decides; conclusion only subtracts」 —— 一个「等一会儿再读」的修法仍然把锚点的权威压在 conclusion 上,只是盼它变终态,而那正是本文件已经为 COUNT 拒绝过的同一种依赖。再加两条它没有重跑、而是引用上一轮读数的支撑:最小读数间隔 0.5221s 属于一个 measured=no 的 job,而亮对照的 0.6407s 更大 ⇒ 任何等待长度都是猜,而卡面明禁会猜的锚点。

    ⭐ 并且它主动纠正了自己的消融结论:第二条腿(禁掉 if: failure() licence)之后 measured 仍然是 false,因为唯一性规则独立地拦住了它 —— 所以 licence 是 reason 码的承重件,而安全性质有两道独立屏障而非一道。⛔ 这是把自己的论证讲弱了一点的诚实,不是讲强。

    下一步

    CI 尚余一项。读绿 → ready_for_review → 回读且 total_count 必须真的动过 → 重读绿 → auto_merge → 跟到 MERGED 并在同一动作里取双读数、清状态(Fixes #18874 ⇒ 自动关闭)。


    Generated by Claude Code

  9. removed their assignment
    on Sep 19, 2026
  10. os-try-charles commented on Sep 19, 2026

    @os-try-charles
    Collaborator

    落地记录 · PR #19166 → 4b21c8d1f

    结论:已落地。 卡由 Fixes 自动关闭(closed / completed,closed_at 2026-09-19T03:53:30Z),pm:dispatched 与 assignee 同笔清空,回读 bug · tooling · domain:devx · priority:p3 · 0 assignees(2026-09-19T03:54:50Z)。

    第一读数:队列与时间线

    时间线一页 11 个事件(2026-09-19T03:54:11Z),落地序列齐备:ready_for_review 03:22:07Z → added_to_merge_queue 03:23:32Z → merged 03:53:29Z(commit_id 4b21c8d1f)→ removed_from_merge_queue 03:53:29Z → closed 03:53:29Z → head_ref_deleted 03:53:30Z。控制项取自同一次枚举:同页另有 committed 2 · labeled 2 · cross-referenced 1 共 5 个非落地事件。

    分支侧走满 12 页、1147 个分支(2026-09-19T03:54:14Z):pr-19166 队列分支 ABSENT,head 分支 ABSENT,main 在场。

    ⚠️ 与 PR #19163 同样的一条控制项弱化,照样说明: 本轮队列已排空,同一次枚举里 gh-readonly-queue/* 一条都没有 ⇒ 「枚举看得见队列分支」这个控制项本轮没有开火。支撑两个 ABSENT 的是:① main 在场 ⇒ 枚举在工作;② 12 页走到流尽;③ 时间线独立给出 removed_from_merge_queue 03:53:29Z。⭐ 该仪器确实会列出队列分支 —— 本班 02:30:49Z 那次枚举同时列出两条,所以这是「本轮无对象可开火」,⛔ 不是「仪器不灵」。

    第二读数:重取 origin/main 的内容探针

    探针工作树移到 4b21c8d1f;落地 diff 1 个文件、+283/-24(2026-09-19T03:54:37Z)。

    文件内 / 落地 diff 的增删行内(2026-09-19T03:54:37Z):anchorFailure 5 / 5 · failureNotYetStamped 8 / 8 · anchored_by= 4 / 4 · reason= 3 / 3 ⇒ 四者都是本次新引入的。⭐ 而钉住的红线 a job with no failed step is NOT MEASURED, not a tail of 0 文件内 1、增删行内 0 ⇒ 它逐字未动,只是随文件变长漂了行号。

    ⚠️ 判据上的一个更正,记在这里:这一条本席复核时先用 git diff | grep -c 读成 1 —— 而 git diff 的输出把上下文行也数进去,那个判据分不开「这行被改了」和「它邻居被改了」。本记录里所有 diff 侧读数都已改用 ^[+-][^+-] 过滤。

    开火控制项按「增删行命中 0 且文件内在场」当刻机械挑出,两个通过:renderReport(0 / 7)· POST_STEP(0 / 2);declared(diff 20)与 skipped_by_condition(diff 3)按同一判据被淘汰,没有当控制项用。

    电池在落地树上 47 assertions exit 0(2026-09-19T03:54:44Z);本次修法所依赖的那条 licence 仍在落地树上:.github/workflows/lint.yml 的 if: failure() 命中 3,:4714 OS_TAIL_REPORT_STEP: Report how many gates never ran 在位 —— ⭐ 而本 PR 没有碰那个文件。

    本轮的两条记录

    1. ⭐ 本席派发时砍掉的第三个形状(要改 workflow 的那个)根本没被用到。 开发席在剩下两个里取了位置式锚定,拒掉「短等后重读」的理由是本文件自己写过两遍的判据 —— 一个等待仍然把锚点的权威压在 conclusion 上,只是盼它变终态,而那是本文件已为 COUNT 拒绝过的同一种依赖。
    2. ⭐ 它还主动把自己的消融结论讲弱了一点:禁掉 licence 之后 measured 仍为 false,因为唯一性规则独立拦住了它 ⇒ licence 是 reason 码的承重件,而安全性质有两道独立屏障而非一道。⛔ 这是诚实,不是自夸。

    Generated by Claude Code

  11. added a commit that references this issue on Sep 28, 2026
    4b21c8d
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