There was no rule covering backups at all: a failed nightly job would have gone
unnoticed, which is precisely the silent failure management #0030 is about.
BackupJobFailed catches a failed run, BackupNotRunning catches a CronJob that
stopped scheduling, and RestoreDrillStale fires when the monthly drill stops —
an unverified backup is an assumption again, so the absence of the check is
itself worth alerting on.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
