Release record R3 + R4: outcomes, readiness, changelog, planning, calendar, Autoland eligibility

[jfillman]

What

R3 and R4 of the Release Record work. This needs jfillman/backstage#138.

R3: learn from what shipped

• Outcome on every record. The possible outcomes are:

  • clean
  • rolled back (names the release it rolled back to, and the reason)
  • replaced before healthy
  • stopped before production
  • baking · day N of 7 (while the release is still in its bake window)

  The outcome shows in the list, in a new Outcome panel on the opened record, and in Compare.

• The score is now "readiness": how ready the release was when it shipped. The constant "+5, no incidents" is gone, so every score drops by 5. The outcome sits beside the score.

• Changelog view: every release's notes, newest first.

• GitHub Release opt-in: a new checkbox in the draft. The record links the release once it's published.

R4: plan and share

• Draft target date and milestone:
  • A "Planned" list of the milestone's open issues.
  • Two new readiness checks: Target date (shown as a to-do when late) and Planned issues closed.
• Jira links (when tower.jira.baseUrl is set). Linked issues show their own labels.
• Ops Wall: Release calendar panel.
• Autoland eligibility under the mode bar. It is display only: tests, canary, production metrics, a clean history and readiness.
• Activity: the release-record and release-signoff topics now have a category and label. The R2 sign-off alert was being filtered out of the feed.

Verified

• tsc, lint and yarn ratchet are clean. 806/806 tests pass, including new tests for outcomes, the changelog, Autoland eligibility, the calendar panel, Jira links, planned scope and the target date.
• Live in the local harness against the real clusters:
  • On boarding-api (now Hand-flown, with your draft and PR Release record: cloud Flight releases via pin PR; layout option A #41 open): the mode bar, Autoland eligibility (1 of 5), the draft card and readiness all render. Readiness is 7 of 9, including notes, owner and sign-off.
  • The Changelog lists all 8 releases.
  • The Ops Wall Release calendar shows every app's next release, and boarding-api shows its owner, 4 notes and "→ staging".
  • No existing record shows an outcome. That's correct: their tracking records predate ADR-0021 phase 4 and carry no image to match.

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