Validate ran three smoke shards, golden and performance_smoke on every push,
check-docs went red on any src/** change until screenshots were re-captured,
and a parallel bundle build made every second task branch fail to rebase.
None of these gates ever failed at review time; they fail before betas.
- `heavy` output in job `changes` (scripts/classify-changes.mjs): smoke,
smoke_done, golden, performance_smoke run only for a head commit with a
`Release:` trailer, `workflow_dispatch full=true` and pull requests.
- nightly.yml dispatches Validate on dev with full=true every night.
- check-docs `--screenshots=warn|strict`: freshness of the screenshot index
warns on a plain push, errors on the candidate; everything else still errors.
- publish-prerelease.yml and release.yml refuse a candidate without the
`Release:` trailer and (prerelease) require fresh screenshots — a green
Validate without the heavy jobs cannot pass for a release.
- scripts/rebase-on-dev.mjs: rebase on origin/dev taking dev's copy of the
committed bundle, rebuild with bundle:sync, amend; any other conflict aborts.
- npm run gate:small: mandatory PROCESS §8 part in one parallel run.
Issue: #479
User-Visible: no
