- Remove in-button spinner from SettingsButton and SettingsOutlinedButton
- Buttons keep text during loading and become disabled (enabled=false)
- Add BackupProgressCard component with LinearProgressIndicator + status text
- Add backupStatusText StateFlow in SettingsViewModel
- Add 3-phase status system: In Progress → Completion → Clear
- Show success completion status for 2 seconds ("Backup created!", etc.)
- Show error status for 3 seconds ("Backup failed", etc.)
- Status auto-clears after delay (no manual intervention needed)
- Update createBackup() with completion delay and status messages
- Update restoreFromFile() with completion delay and status messages
- Update restoreFromServer() with completion delay and status messages
- Remove all redundant toast messages from backup/restore operations
- Add exception logging (Logger.e) to replace swallowed exceptions
- Integrate BackupProgressCard in BackupSettingsScreen (visible during operations)
- Add delayed restore execution (200ms) to ensure dialog closes before progress shows
- Add DIALOG_CLOSE_DELAY_MS constant (200ms)
- Add STATUS_CLEAR_DELAY_SUCCESS_MS constant (2000ms)
- Add STATUS_CLEAR_DELAY_ERROR_MS constant (3000ms)
- Add 6 new backup completion/error strings (EN + DE)
- Import kotlinx.coroutines.delay for status delay functionality
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