Actions persisted to the database triggered a snackbar when the app
restarted. Added a 30-second recency check so only actions created in
the current session show the snackbar; added widget tests covering both
cases.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Remove delete confirmation dialogs in list and detail screens.
- Style Undo SnackBar action button with red text color.
- Enhance Undo Log screen to show email subject, sender, and action metadata.
- Add Undo support for Snooze action.
- Fix restoreEmails to preserve snooze metadata.
- Add unit test for Undo snooze logic.
