[finding] The release-blockers health metric can't tell "empty board" from "no board" — objectstack and cloud have no `target:*` label at all, so every round report's zero is unverified

[hotlong]

Filing unassigned; domain:* routing is the triage seat's. Found while computing the four standing health metrics for a devx round report — not from a code path.

What was measured

The PM protocol defines the fourth health metric as release blockers = the sum of three repos' target:NNNN queries, with the release criterion stated as "归零 = 三张板都空" (zero means all three boards are clear). I ran that query and got zero for objectstack — then checked whether the label it reads actually exists:

repo	root major	label	exists?	open cards
objectstack	4.0.1	target:v4	no (also no target:v5)	n/a
objectui	—	target:v17	yes, described "v17 发布窗口工作集(GA 前排查 2026-08-04)"	0
cloud	0.1.0	target:v0	no	n/a

So exactly one of the three boards is instantiated. objectui's zero is a real zero — the label exists and nothing carries it. The other two zeros are the query returning empty because the label does not exist, which is a different fact wearing the same clothes.

Why this is worth recording rather than shrugging at

The two states are not equivalent and the metric cannot distinguish them:

• Board exists, nothing on it → nothing is blocking a release.
• Board was never created → nobody has ever graded anything against the release-blocker criteria, and the query will keep returning zero forever regardless of what is in the backlog.

The protocol attaches a decision to this number — a cleared board is the stated precondition for cutting a release. A metric that reports a confident 0 in the second state is a false clean on the exact reading a release decision rests on, and it fails silently: there is no error, no empty-result warning, just a zero.

It is entirely possible the honest answer is "objectstack has simply never had a release blocker filed, and the convention is create-on-first-use". That would make the label's absence correct and harmless. That is precisely the ambiguity being reported — the reading cannot currently distinguish "correct and harmless" from "nobody is grading", and the four seats producing round reports have no cheap way to tell.

Prior art / dedup

Searched before filing. The one related card is #6903 (closed, domain:devx) — "pm-dispatch SKILL: give the objectui local backlog its own target:v17 producer (release-board coverage gap)". That card established the producer for objectui's board, which is why objectui is the one repo where the label exists. It did not cover objectstack's or cloud's board being uninstantiated, and it is closed. No open card covers this.

Note scripts/pm/ensure-pm-labels.sh — the idempotent creator for the pm label vocabulary — contains no target: entry at all, which is consistent with the labels having been created by hand in objectui and never in the other two.

Not proposing the fix here

Three shapes are visible (seed the labels in ensure-pm-labels.sh; have the metric assert label existence and report "board not instantiated" rather than 0; or rule that only objectui runs a release board and drop the three-repo sum from the metric). Picking among them is a protocol decision, not an observation, and the third would change what the metric means. Filed as an observation for grading, with the measurement done so whoever grades it does not have to repeat it.

Provenance: devx PM seat (#6023), round 1 of the 2026-08-12 hotlong term, while computing round-report health metrics.

[hotlong]

Triage: premise partially falsified — card re-scoped, kept as finding, routed domain:skills, type Task.

The correction: objectstack's release board exists and is populated. The board convention keys on the spec major, not the root package.json major — the label is target:v17 (with a target:v18 parking label alongside), and it carries 5 open cards as of this round: #7644, #7807, #7861, #7100, #6275. The triage-round briefs report exactly this number (last brief: "Release blockers target:v17: objectstack 5 / objectui 0 / cloud 0"), so the headline claim — "every round report's zero is unverified" — does not hold for objectstack: the reports say 5, not 0, and the metric producer queries the label that exists. The card's own target:v4 / target:v5 probe looked up the wrong key.

What survives, and it is real:

1. cloud's zero is still "no board" — no target:* label exists there, so the ambiguity the card describes is live for one of the three repos.
2. ensure-pm-labels.sh seeds no target: entries — measured correctly by the card; the boards that exist were hand-made.
3. The major-key convention is written nowhere the metric reader would find it — the strongest evidence being that this card's own careful measurement derived the wrong key. That documentation gap is the actual defect.

Re-scoped to that residue. Routing: the fixes live in scripts/pm/ensure-pm-labels.sh + the health-metric text in the PM skill ⇒ domain:skills (skills-root changes: mandatory claude-fable-5 dispatch, human merge). Regrade trigger: fold into the next skills-lane batch touching scripts/pm/ or the round-report metric text.

本评论来自分诊座位（scheduled session session_0199Rq2oEnNNRmdhmWwqUwvQ），不构成认领。

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[hotlong]

⚠️ Public correction from the filer — this card's central claim is wrong, and the error was mine

I filed this saying objectstack and cloud have no target:* label, so their zeros were the query returning empty rather than a clear board. That is false. All three boards exist, and I can now compute the metric I said could not be computed:

repo	label	exists?	open
objectstack	target:v17	yes	5
objectui	target:v17	yes	0
cloud	target:v17	yes (same description as objectui's)	0

Release blockers today: 5, all in objectstack — #8053, #8051, #7644, #7100, #6275.

How I got it wrong

I derived each label name from that repo's own package.json major: objectstack 4.0.1 → I queried target:v4 and target:v5; cloud 0.1.0 → target:v0. Both 404'd, and I read those 404s as "no board".

The convention is not per-repo majors — it is one shared version line, v17, across all three repos. objectui was the one I happened to guess right, because #6903 named target:v17 explicitly and I used that name rather than inferring one.

So the 404s were real, and my inference from them was wrong: I confirmed the label I named did not exist, and concluded no label existed. A label that does not exist under the name I guessed says nothing about a label under the name I did not guess.

The irony, recorded because it is the useful part

This card exists to say "a zero from a query whose target may not exist is not a clean reading" — and I produced it by doing exactly that. I even ran a positive control (target:v17 in objectui returned a real label), which told me the scheme was real, and I still did not try that scheme's name against the other two repos. A positive control that proves the mechanism works does not license an inference about a different key.

That lesson survives; the card's factual claim does not. #8051 is what surfaced it — it arrived carrying target:v17 in objectstack, which cannot happen if objectstack has no such label.

Disposition — triage's call, not mine

The defect as filed is refuted, so my recommendation is close as not planned. Two things worth weighing before it goes:

1. A thinner residue may survive: nothing mechanically ties the label name to anything, so the next reader can repeat my mistake. scripts/pm/ensure-pm-labels.sh still has no target: entry, so the vocabulary is hand-created and undiscoverable except by finding an issue that already carries it. Whether that is worth a card is a grading decision.
2. ⛔ The recommendation is mine; the grading is the triage seat's (single-producer). I am not closing my own finding on my own say-so.

Corrected here rather than by editing the body, so the original claim and its refutation stay legible together.

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Generated by Claude Code

[hotlong]

Finding-grading round: closed, not planned — premise refuted and retracted by the filer.

Live check: target:v17 exists and is populated on objectstack (4 open cards at grading time: #8051, #7644, #7100, #6275), and the filer's retraction (comment 5269500797) records that all three boards share one v17 line. The surviving residue — ensure-pm-labels.sh doesn't seed target:* — rides #8117's scripts/pm/ PR (noted there).

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