Closes the canary loop with the escape hatch and a single place to
read about the whole flow.
scripts/rollback-latest.sh <sha>
uses crane to retag :latest ← :staging-<sha> for BOTH the platform
and tenant images. Pre-checks the target tag exists and verifies
the :latest digest after the move so a bad ops typo doesn't
silently promote the wrong thing. Prod tenants auto-update to the
rolled-back digest within their 5-min cycle. Exit codes: 0 = both
retagged, 1 = registry/tag error, 2 = usage error.
docs/architecture/canary-release.md
The one-page map of the pipeline: how PR → main → staging-<sha> →
canary smoke → :latest promotion works end-to-end, how to add a
canary tenant, how to roll back, and what this gate explicitly does
NOT catch (prod-only data, config drift, cross-tenant bugs).
No code changes in the CP or workspace-server — this PR is shell
+ docs only, so it's safe to land independently of the other Phase
{1,1.5,2,3} PRs still in review.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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