Monthly restore-drill CronJob (verified before commit) plus the finding that
mattered more: there was no backup alerting at all, so a failed nightly job
would have gone unnoticed. Added BackupJobFailed/BackupNotRunning/
RestoreDrillStale; the last one alerts on the absence of the check itself.
Alert rules still need deploying on CFGMON.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>