Adds projection_retired_at, projection_retired_reason and derived_from_commit.
Retirement cannot be expressed by deletion — hub-native records reference
workplans with RESTRICT — nor by `status`, since an archived workplan was closed
by its owner while a retired one is simply no longer derived by the forge. Those
are different facts and must not share a field.
Discovered while applying this: central's schema is two revisions behind the
code it runs. review_contracts does not exist there although its migration ships
in the serving image, and there is no migration mechanism at all — bare uvicorn
CMD, no chart-declared job. Recorded as STATE-WP-0083-T07, which now blocks T03.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Assistant: claude-code
Assistant-Model: opus
Assistant-Process: 2583210@bnt-lap001
Assistant-Session: f2bff2d5-e9b2-4338-92ca-10282a927006
