config.xml:
- Defaults fieldset: archive format, MokoRestore mode, sanitization
defaults (passwords, emails, sessions), log retention days
- Global ntfy fieldset: server, topic, token (fallback for profiles)
access.xml:
- mokosuitebackup.backup.purge — bulk delete old backups
- mokosuitebackup.backup.compare — compare two backups
- mokosuitebackup.backup.browse — browse archive file listings
30+ new language strings for all fields and ACL actions.
Partial #137 (ACL enforcement audit in separate commit)