The "Landed in all three repos together" line pointed at the sibling
tracking issues rather than the sibling PRs. The entry already opens with
its own issue ref, so a reader following "landed together" was sent to more
issues and never reached the actual sibling changes.
All three PRs carried it identically because the three entries came from one
generator that took sibling references from its issue-number map, and
expanded them into the sentence without re-wrapping — which is also why the
line ran to 108 columns in a file that wraps at 83.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
A review landing was never a trigger for the labels workflow, so the exact
moment `state:needs-human` became true — the third bot approving — fired
nothing, and the label waited on the `*/15` cron. That cron does not run at
its declared rate: measured across box, rig and cast over a two-hour window
on 2026-07-20, one scheduled run each against the eight `*/15` implies.
The obvious fix does not work. There is no `pull_request_review_target`, and
on fork PRs — all of them here — `pull_request_review` runs with a read-only
token and cannot label anything.
So the handoff wakes the sweep itself:
- `pull_request_target` also fires on `labeled`/`unlabeled`
- the author sets `state:needs-human` at handoff, as the third act after the
round summary and the review request
The author's own label write fires the sweep that validates it — an
optimistic write, not a transfer of ownership. The reconciler confirms or
corrects it seconds later, and the cron falls back to a last resort. It
cannot loop: the reconciler writes with GITHUB_TOKEN, which does not create
workflow runs; agent writes use a PAT, which does.
`labels-reconcile.sh` is unchanged — it already recomputes every open PR
from scratch on every run, which is what makes the optimistic write safe.
The `scope` job is skipped on label events, where no path can have changed.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
