# US07-05 — Deliver Backup and Operational Recovery

Epic: [E07](../E07-hardening-release.md)

As an operator, I want documented and tested backup/recovery procedures so application
state can be restored after migration failure, database damage, or storage loss.

## Acceptance criteria

- Online backup includes database consistency, required manifests, configuration
  references, and retention guidance without copying secrets into logs.
- Integrity checks, migration rollback/recovery, archive media handling, and restore
  drills have step-by-step documentation.
- Operational diagnostics report DB/WAL/cache/log/thumbnail sizes and low-disk risks.
- Legacy-process locking prevents incompatible simultaneous mutations.

## Automated tests

- Recovery drills restore backups into fresh roots and run integrity/reconciliation.
- Tests cover failed migration, corrupt copy detection, retention, and process locking.

## Dependencies

- US07-01, US07-04