Normal use only needs Connect, Back up now, and Restore from Drive. These controls are for setup or local recovery.
Google authorization setup
The deployed MIM build already includes its public OAuth client ID. Change this only when deploying under a different Google OAuth configuration.
Backup & restore log
How Drive access works
Google provides a short-lived access token after a user action. When it expires, MIM continues using local IndexedDB normally. Reconnect only when you explicitly want to back up or restore.