The rig twin of heavy-duty/box#96, from the release-ceremony retro: the
tag was a separate, manual, silent-when-forgotten step, and a forgotten
tag produces no red X — the worst failure shape. The ship decision
already lives in the release PR; merging it is "ship". After that,
tagging is transcription, and transcription belongs to machines.
release.yml now also fires on pull_request closed into main, gated on
merged AND the `release` label. The job asserts in order, each fail-loud
and creating nothing: VERSION at the merge commit is non--dev; VERSION
changed in THIS PR (base vs merge — the interlock that fails a
mislabeled ordinary PR); the changelog section for that version extracts
non-empty via the existing changelog_section from release-lib.sh; and no
tag or release exists yet. Then, in the same job, it API-creates the tag
at the merge commit and publishes the release with the extracted notes.
Same-job is load-bearing: a GITHUB_TOKEN-created tag does not fire the
tag-push trigger, so the publish must live next to the tag and the
fallback job cannot double-publish; the nothing-exists assert covers a
manual race. The tag-push path survives verbatim as the documented
manual fallback and backfill, and CONTRIBUTING's Releasing section now
reads merge-is-ship with the manual tag as fallback.
test/release.sh pins the merge path in the house grep-pin style: the
merged+labeled gate, the four asserts, the same-job tag+publish (awk
from release-on-merge: to EOF), the asserts-precede-the-tag ordering,
and the surviving tag-push trigger.
Fixes#47
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>