Update Managello safely with rollback

Managello updates through a safe updater designed around backups and rollback — never a raw migrate.

What the updater does

1. Takes a verified backup of your database and files.
2. Pulls the new image (signature-verified).
3. Runs migrations.
4. Runs a health check.
5. Rolls back automatically if the health check fails.

Before you update

• Confirm your last backup is recent and restorable.
• Read the changelog for anything that needs attention.

Every install — including ours — updates this exact way. There is no "just run migrate" path that skips the safety net.