- Separate 'Build and push' into 'Build production image' (build only) and 'Push image' steps
- Creates insertion point between build and push for hygiene assertions (Task 2)
- Preserves --target production, Dockerfile path, both tags, and root context
- WR-04 immutable-tag-first push ordering preserved in push step
- Replace "three required checks (CI / fast-checks, CI / api, CI / harness)"
with the new gating surface: CI / fast-checks + CI / gate
- Note that CI / api and CI / harness are conditionally skipped on doc-only PRs
and gated via the always-running CI / gate aggregate
- Comment-only change; no job/step/env/trigger modified
- Create .gitea/workflows/publish.yml (push-to-main only, name=Publish)
- Strip publish job, push trigger, and MILESTONE env from ci.yml
- Eliminates orphaned CI / publish (pull_request) status on PRs
- Preserves all three required PR status contexts unchanged