feat: implement backup management features

- Added `createBackupAction`, `verifyDatabaseAction`, and `refreshBackupStatsAction` for handling backup operations.
- Introduced `getBackupStats` method in `BackupClient` to retrieve daily backup statistics.
- Updated API route to support fetching backup stats.
- Integrated backup stats into the `BackupSettingsPage` and visualized them with `BackupTimelineChart`.
- Enhanced `BackupSettingsPageClient` to manage backup stats and actions more effectively.

src/lib/backup-utils.ts

@@ -170,7 +170,7 @@ export class BackupUtils {
    * Génère un nom de fichier de backup
    */
   static generateBackupFilename(type: 'manual' | 'automatic'): string {
-    const timestamp = getToday().toISOString().replace(/[:.]/g, '-');
+    const timestamp = new Date().toISOString().replace(/[:.]/g, '-');
     return `towercontrol_${type}_${timestamp}.db`;
   }