Deployment pipeline was computing version sequence (YYYY.MM.DD.N) by
counting existing vYYYY.MM.DD.* git tags, but the pipeline never created
those tags. Result: VERSION_SEQUENCE always resolved to 1, making the
"daily sequence" half of the contract decorative.
Now: After successful deployment to production, pipeline automatically
creates and pushes release tag vYYYY.MM.DD.N.SHA10 (e.g. v2026.08.07.1.abc1234567).
Uniqueness preserved even on same-day re-deploys. Permissions upgraded:
contents: read → write for tag push.
AGENTS.md: Right-Way (root cause fixed, not bandaged).
Ref: DEPLOY_FRONTEND_ARTIFACT_CONTRACT.md section "Bug Fix: Version Sequence Tagging"
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
kjh2064