Adds autoImportEnabled/autoImportHour to rclone config. A separate
hourly cron finds the latest .zip in backups/ and restores it to the
database (drop schema, psql restore, apply migrations). Frontend shows
toggle + time picker + Import Now button in the Receiver PC section.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
