services/backup_job.py reads its config when it fires, so startup reads
nothing (#4181) and a changed hour needs no reschedule. A run is held to
a 60-minute deadline (a hung NFS mount would otherwise hold the lock and
skip every later backup), never runs twice at once, and keeps its outcome
- file, size, duration, or the reason in words - in the bounded
backup_runs setting, which no backup carries. summarise() gives the page
its verdict: overdue when on and no success for 26h.
Admin API: GET/PUT /api/admin/backups, POST /backups/check (tests unsaved
form values, 45s deadline), POST /backups/run (202, background).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>