Add backup verification and restore testing

[accuser]

Problem

Backup procedures exist but lack verification and restore testing capabilities.

Location: BACKUP.md, Makefile

Current Gaps

• No automated backup verification (restore testing)
• No backup integrity checks
• Relies on manual execution or snapshots.schedule
• No restoration test procedures

Recommendations

1. Add make backup-verify target that:

   • Restores a snapshot to a test volume
   • Validates data integrity (checksums, service startup)
   • Reports success/failure

2. Implement automated daily snapshots via systemd timers or cron

3. Test disaster recovery procedures quarterly

4. Add integrity verification after backup completion

Acceptance Criteria

• make backup-verify command implemented
• Backup integrity checks automated
• DR testing procedure documented
• Quarterly testing schedule established

Priority

High - critical for disaster recovery confidence

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🤖 Generated from infrastructure review