R-486 (P1): removing an app with its backups KEPT keeps its Tier-2 record,
so the second-drive restore is no longer refused over an intact mirror.
R-484: postgis/pgvector/timescaledb images are Postgres (logical dumps).
R-485: the backup card sizes the recovery unit and the mirror(s).
R-480: a held update's sentence leaves the card once the hold is lifted.
R-477: the update's off-site lookup is one snapshots call, no stats.
R-478: a copy older than this install's deploy does not count.
R-474: "delete backups" deletes the unit, the mirror(s) and the prefs.
Tests and red-proofs per row; evidence in felhom.eu
documentation/audits/v0240-2026-09-13/ and nightly-2026-09-13-adventurelog/.
