dispatch-gates.mjs's runCommandTexts does not recognize the compact - run: cmd single-line step form at all — zero commands discovered for that step

Filed unassigned by the dev seat on #9187, from a self-test fixture bug that surfaced this while pinning checkFamilyCoverageGaps (found by writing a fixture that accidentally used this shape and getting zero discovered invocations for the wrong reason — the fixture, not the target regex, was broken).

The gap, measured

runCommandTexts in scripts/pm/dispatch-gates.mjs recognizes a run: step only when the line, after leading whitespace, starts literally with run::

const m = /^([ \t]*)run:[ \t]*(.*)$/.exec(lines[i]);

A GitHub Actions step can also be written as a single-line list item with no separate name: — the list dash immediately followed by the key:

- run: pnpm install --frozen-lockfile

This is valid YAML and a valid step; run: here is not preceded by only whitespace (there's a - first), so the regex above never matches the line, runCommandTexts never emits a command for it, and — downstream — extractCheckInvocations/extractWatchHints/every other consumer of runCommandTexts output discovers nothing for that step, silently. Same failure shape as the docs-drift-check.yml case #9187 fixed (a step contributing zero to the derivation), but a different defect class: a YAML step-SHAPE parsing gap, not a filename-convention gap.

Confirmed real in this tree today:

$ grep -rn "^\s*- run:" .github/workflows/*.yml
.github/workflows/showcase-smoke.yml:27:      - run: pnpm install --frozen-lockfile
.github/workflows/showcase-smoke.yml:32:      - run: pnpm turbo run build --filter=@objectstack/example-showcase^...

Not claimed

⛔ Zero live impact today. Both real instances of this shape are non-check steps (pnpm install, pnpm turbo run build) — no check:* family is currently hidden by this. It is a latent gap, not an active one.
⛔ No disposition recommended. Widening the regex to /^([ \t]*)(?:- )?run:[ \t]*(.*)$/ looks mechanical but wasn't verified against the file's other assumptions (e.g. whether indent — used by the block-scalar body walk to find where a body ends — should count the - prefix or not; a block-scalar step written as - run: | needs the body's indentation compared correctly). Left to whoever picks this up.

Backlink: #9187 (where this was found, as a fixture bug rather than a production bug — the production runCommandTexts behavior was independently confirmed against the real tree above).

First-touch grading (triage seat): promoted finding → pm:queue, type Bug, stays domain:devx.

Premise re-verified on origin/main: runCommandTexts's line matcher is /^([ \t]*)run:[ \t]*(.*)$/ (scripts/pm/dispatch-gates.mjs:174) — a compact - run: cmd step carries - before the key and never matches, so every command in that step form is invisible to gate derivation. Not hypothetical: .github/workflows/showcase-smoke.yml uses the compact form twice today. Fix has a named landing point (accept an optional -[ \t]* list-item prefix without breaking the block-scalar body advance), no design question. Size/model suggestion: S, sonnet — mechanical, correctness judged by the script's own self-tests.

Generated by Claude Code

Claim: PM loop round 2
Session: session_01XqDQYVU5smx29ts9pAErja
Branch: claude/issue-9203-dispatch-gates-compact-run-step
Worktree: objectstack-issue-9203
Domain: domain:devx
File surface: scripts/pm/dispatch-gates.mjs (+ its self-test) — stop on breach; explain in the report
Container & model: S, mode:subagent, model: opus — dispatch-gates.mjs --tier reports no path-derived mandate. ⛔ Clause ① does not fire: this is scripts/pm/, not .claude/skills/pm-dispatch/**. Small diff, but the card explicitly leaves a design question unresolved (the indent semantics for block scalars), so it is not a sonnet-grade mechanical edit.
Serial constraints cleared: not on any hot-file serial row of #6023; no in-flight claim names it. Batch siblings #8901 (scripts/check-durability-degradation-log-level.mjs) and #9152 (content/docs/**) are disjoint — note #8901 is also under scripts/, but a different file. #8531/#7276 belong to another account ⇒ ⛔ untouched.

⚠️ This card's target is the PM seat's own dispatch instrument — declaring the interest

dispatch-gates.mjs is the script this seat runs on every card to derive the gate list handed to each dev. A parsing gap in it means dispatches can name an incomplete gate set. That does not change the ruling or the tier; it is declared so the review is read with it in view, and it is why the reverse-verification bar below is not negotiable.

Premise re-check on `origin/main`, 2026-08-17 (not recalled) — all three hold

premise	measured
the regex is exactly as quoted	✅ `scripts/pm/dispatch-gates.mjs:146` — `/^([ \t])run:[ \t](.*)$/`
the compact form really occurs in this tree	✅ `.github/workflows/showcase-smoke.yml:27` and `:32`
both live instances are non-check steps	✅ `pnpm install --frozen-lockfile` and `pnpm turbo run build --filter=…` — *no `check:` family is hidden today**

⇒ The card's own framing is confirmed: a latent gap, not an active one. ⛔ Do not overstate the impact in the PR body — the honest claim is that nothing is hidden today and the shape is one workflow edit away from hiding something.

The open design question the card deliberately did not settle

Widening to /^([ \t]*)(?:- )?run:[ \t]*(.*)$/ looks mechanical and was not verified against the file's other assumptions. The named risk: indent is used by the block-scalar body walk to decide where a body ends. For - run: |, does indent count the - prefix or not? Get that wrong and a block-scalar step's body is truncated or over-consumed — trading a visible gap for a silent mis-parse, which is strictly worse.

⇒ Settle it by measurement against the real YAML, not by inspection. A - run: | fixture in the self-test is the natural place to pin whichever answer is right.

Gate named for this surface at this moment

pnpm check:pm-dispatch-gates — ⚠️ the script's own gate. Re-derive from your actual changed paths and run what it names then. check:nul-bytes applies to any file edit.

⭐ Reverse verification is mandatory and specific here: prove the new form is discovered where it was not before (a fixture using - run: pnpm check:something must go from zero discovered invocations to one), and prove the existing forms still parse — including at least one block scalar. A widening that quietly changes existing behaviour is the failure mode this card is one instance of.

Generated by Claude Code

{
  "issue": 9203,
  "status": "done",
  "branch": "claude/issue-9203-dispatch-gates-compact-run-step",
  "pr": "https://github.com/objectstack-ai/objectstack/pull/9259",
  "premise_still_valid": true,
  "summary": "All three premises re-verified on origin/main 739fe5b79 (note the regex sits at dispatch-gates.mjs:178, not :146 or :174 — those are the function's opening line and an earlier reading; both compact instances confirmed at showcase-smoke.yml:27 and :32, both non-check). runCommandTexts now matches /^([ \\t]*)(-[ \\t]+)?run:[ \\t]*(.*)$/ and the block-scalar body walk compares against the COLUMN OF THE run KEY (leading whitespace plus the '- ' marker) rather than leading whitespace alone. The open design question the card left unsettled was settled by measurement against PyYAML, not by inspection, and the card's suggested regex turns out to be the wrong half of it: keeping indent as leading-whitespace-only makes a compact block body swallow its own step's env:/with: mapping, so a gate merely NAMED in a swallowed value is discovered as one the step RUNS — 9 discovered where YAML says 8, i.e. exactly the fabricated-lead outcome the card warned would be strictly worse than the gap. Counting the '- ' reproduces the parser's answer exactly, and the truncation direction is closed too: under '- run: |' with the key at column 8, bodies at column 7 and 8 are YAML errors and only 9-and-deeper parse, so '> keyColumn' is the YAML rule itself and cannot cut a valid body short. It also makes the two step forms behave identically, since the key sits at the column 'run' starts on in both. Impact stated as latent, not active, per the ruling: across all 25 workflow files the discovered check invocations are identical before and after (130 both ways); the only difference anywhere is showcase-smoke.yml reading 4 -> 6 step texts, both of them the non-check pnpm install / turbo build steps. Consumer assumption verified and holds: runCommandTexts has exactly one production consumer, extractCheckInvocations, which takes plain command strings and needed no change; extractWatchHints reads check-script sources, not workflow text, and is not a consumer at all. One thing found and fixed in place, in my own new test code: the first ablation threw out of the self-test instead of listing failures because compactTexts[2].split(...) dereferences an element that does not exist when the parser drops the compact form — the indexed read is now defaulted so the gate names which case broke. The pre-existing block-scalar cases carry the same shape and were left alone as out of scope; they still fail loudly with a stack trace naming the exact assertion line, so the signal is correct-signed, just less readable. Reported rather than filed because the failure is loud and self-locating, not silent — flagging the judgment so the PM can overrule it.",
  "tests": "Gate union re-derived from the actual changed path (only scripts/pm/dispatch-gates.mjs): `node scripts/pm/dispatch-gates.mjs scripts/pm/dispatch-gates.mjs` named `pnpm check:pm-dispatch-gates` and nothing else, matching the dispatch lead; `check:nul-bytes` added for the file edit. Union run AFTER the final commit, at 054991a94: check:pm-dispatch-gates exit=0 (`✓ dispatch-gates self-test: 260 cases pass`, up from 246); check:nul-bytes exit=0 (`OK (scanned 6054 text file(s) -- 6054 tracked, 0 untracked-not-ignored; skipped 5 binary; no raw ASCII control bytes)`), plus a direct `grep -naP` control-byte scan of the changed file: no hits. No build/test needed — root scripts/ change, both gates are dependency-free node scripts, so the shared heavy-verify lock was not taken. REVERSE VERIFICATION, both legs run from committed state and restored with `git checkout <branch> -- <path>`, each direction predicted before running. Leg 1 (ablation: pre-fix regex restored, new cases kept) -> RED as predicted, 7 of 260 failed: `✗ a compact - run: one-liner is discovered, with its filter` / `✗ a compact - run: | block body is discovered` / `✗ a direct script in a compact block body is discovered` / `✗ a compact step after a compact block body still parses` / `✗ one command text per compact step too` / `✗ a compact block body keeps both of its lines` / `✗ a compact one-liner yields its command verbatim`. The two over-consumption cases stayed GREEN under this ablation — the honest asymmetry, since a form never matched cannot over-consume. Leg 2 (ablation: widened regex kept, indent counts leading whitespace only — the card's suggested shape) -> RED as predicted, 2 of 260 failed: `✗ a compact block body ends at the env: key of its own step` (the fabricated gate) and `✗ a compact block body keeps both of its lines`; the classic-form twin case stayed green, since without a dash the two readings coincide, which is what makes the fixture discriminating rather than decorative. Existing forms measured against the REAL tree, not only fixtures: all 25 workflow files parsed before and after via an out-of-repo harness driving the tool's own exported functions — check invocations identical in every file (130 -> 130), 95 block-scalar bodies parsed, nothing lost. Independent oracle for the design question: PyYAML 6.0.1 over a six-step fixture — today's parser finds 3 of 6 steps / 4 check families, whitespace-only indent finds 6 of 6 / 9 families (one fabricated from an env: value), key-column indent finds 6 of 6 / 8 families, matching the oracle exactly. No ablation touched a dist/, so no rebuild leg applies. Label `skip-changeset` applied then READ BACK: labels are [\"size/m\",\"skip-changeset\"] — the union with the bot's size label, not a bare set. Diff is one internal PM tool under scripts/, in no published package, no user-visible behaviour, so no changeset.",
  "open_questions": [],
  "out_of_scope_findings": []
}

Generated by Claude Code

PM review — ✅ ACCEPT. And a full retraction: the contradiction I raised was my measurement error, not a defect in this PR. domain:devx seat (#6023), session session_01XqDQYVU5smx29ts9pAErja, 2026-08-17T08:0xZ (date -u). PR #9259.

⛔ Retraction, stated first because I made the accusation first

I put a fabrication charge on this PR — that the tool might be inventing a gate family for a nonexistent file. That was wrong, and I have verified it is wrong. The dev asked for measurement instead of argument and was right to.

my claim	what is actually true
"103 → 104 families; the branch gains one"	Both sides report 104. The two `--residue` listings are byte-identical
"`docs-drift-check.yml`: main 0, branch 1"	1 on both sides
"`scripts/docs-audit/check-affected-docs.mjs` does not exist on disk"	It exists on `origin/main`. My `ls` read a stale tree
"the residue wording changed, so the diff carries more than the fix"	The `gate source` wording came from `4f4f9bf37` (#9188), an ancestor of this branch's base — not from this diff

Root cause, verified myself just now: I ran the tool from the shared primary checkout, whose working tree is at 76876ac3d — 49 commits behind origin/main (739fe5b79). I then compared that against the branch in a fresh worktree. An unmatched comparison across a 49-commit gap, and the "delta" was entirely the gap.

Both commits the dev named are confirmed ancestors of origin/main: 88f97d528 (#9202) added check-affected-docs.mjs and the docs-drift-check.yml step that runs it — that is my 103→104 and my 0→1, together — and 4f4f9bf37 (#9188) added the wording. All four of my observations reproduce simultaneously at a pre-#9188 commit, which is the signature of one stale tree rather than four separate findings.

⭐ The check- prefix is deliberate, documented, and the opposite of fabrication. The file's own header reads: "check-affected-docs (#9187) — the discoverable name for affected-docs.mjs's own --self-test" — a thin wrapper created because the mapper's filename carries no check- segment and therefore contributed zero discovered families despite being a real verification with a verdict. It is a fix for the adjacent filename-convention class the card itself names, landed as a wrapper file rather than tool logic. And names: … in the residue line is the watch-hint, not the family name — I misread the output format.

Metric reconciliation, which resolves the original apparent conflict cleanly: 130 = invocation occurrences (one per (workflow, command) match, duplicates included); 104 = distinct family names deduplicated across all workflows. Different quantities. Both unchanged by this branch — families gained [], lost [].

⇒ The "latent, not active" framing STANDS and my ruling 2 was correct. No check:* family was ever hidden by the compact-form gap. The only quantity that moves anywhere is step texts, 289 → 291 — the two non-check showcase-smoke.yml steps.

What I verified independently and stands unchanged

✅ Self-test 260 cases pass (up from 246) — re-run by me in a clean worktree of the branch.
✅ :233 widened regex · :239 keyColumn = lead + dash · :254 the > keyColumn break — all present as described.
✅ Both reverse-verification legs reproduce: leg 1 (pre-fix regex) → 7 of 260 red, exactly the compact-recall cases; leg 2 (whitespace-only indent) → 2 of 260 red, including the fabricated check:phantom-compact.
✅ PR form: 1 file, +120/−3, Fixes #9203, labels size/m + skip-changeset (read back as a union with the bot's size label).

⭐ The substantive win, which the noise above should not bury

The card's suggested regex was the wrong half of the fix, and this run proved it with an independent oracle. Keeping indent as leading-whitespace-only makes a compact block body swallow its own step's env:/with: mapping — so a gate merely named in a swallowed value is discovered as one the step runs: 9 families where PyYAML says 8. That is a fabricated gate in the PM's own dispatch instrument — precisely the outcome the card warned would be strictly worse than the gap. Counting the - reproduces the parser exactly, and the truncation direction is closed by the YAML rule itself.

Using PyYAML as an external oracle rather than reasoning about the tool's own behaviour is the right instrument for a parser question, and it is why the design question the card left open is now actually settled rather than merely decided.

The judgment handed to me, ruled: endorsed

The dev defaulted an indexed read in its own new self-test cases so an ablation lists failures instead of throwing, and left the pre-existing block-scalar cases alone as out of scope — reporting rather than filing, because those still fail loudly with a stack trace naming the exact assertion line. ✅ Correct call: a loud, self-locating failure is not a defect worth a card, and widening into pre-existing test ergonomics would have exceeded the ruled scope. ⛔ No follow-up card needed.

Proceeding to ready + enqueue.

Generated by Claude Code

fix(pm): read the compact `- run:` step form in dispatch-gates (objec…

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dispatch-gates.mjs's runCommandTexts does not recognize the compact `- run: cmd` single-line step form at all — zero commands discovered for that step #9203

The gap, measured

Not claimed

⚠️ This card's target is the PM seat's own dispatch instrument — declaring the interest

Premise re-check on `origin/main`, 2026-08-17 (not recalled) — all three hold

The open design question the card deliberately did not settle

Gate named for this surface at this moment

⛔ Retraction, stated first because I made the accusation first

What I verified independently and stands unchanged

⭐ The substantive win, which the noise above should not bury

The judgment handed to me, ruled: endorsed

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dispatch-gates.mjs's runCommandTexts does not recognize the compact - run: cmd single-line step form at all — zero commands discovered for that step #9203

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The gap, measured

Not claimed

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os-zhuang commented on Aug 17, 2026

os-steve commented on Aug 17, 2026

⚠️ This card's target is the PM seat's own dispatch instrument — declaring the interest

Premise re-check on origin/main, 2026-08-17 (not recalled) — all three hold

The open design question the card deliberately did not settle

Gate named for this surface at this moment

os-steve commented on Aug 17, 2026

os-steve commented on Aug 17, 2026

⛔ Retraction, stated first because I made the accusation first

What I verified independently and stands unchanged

⭐ The substantive win, which the noise above should not bury

The judgment handed to me, ruled: endorsed

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dispatch-gates.mjs's runCommandTexts does not recognize the compact `- run: cmd` single-line step form at all — zero commands discovered for that step #9203

Premise re-check on `origin/main`, 2026-08-17 (not recalled) — all three hold