Written 2026-10-21 ~06:20 UTC, before #10 ran.
Method: clean stop; start with the RTC 3 days after the real time (NTP blocked), as if the box had been off for 3
days; during the catch-up, one restart (#15); then the real time, NTP open.
Expected: one catch-up for the missed nights (database copy, second drive, off-site), not three; the household sees a
„missed backups" note and then a catch-up line; the restart in the middle leaves nothing half-done — the catch-up
starts again or is recorded as interrupted, and no copy is left broken.
