feat: enhance backup management in AdvancedSettingsPage

- Added backup management functionality to `AdvancedSettingsPageClient`, including creating and verifying backups.
- Updated `package.json` with new backup-related scripts.
- Improved UI to display backup status and next scheduled backup time.
- Updated `.gitignore` to exclude backup files.
- Enhanced server-side data fetching to include backup data and database statistics.

src/app/settings/advanced/page.tsx

@@ -1,12 +1,46 @@
 import { userPreferencesService } from '@/services/user-preferences';
+import { tasksService } from '@/services/tasks';
+import { tagsService } from '@/services/tags';
+import { backupService } from '@/services/backup';
+import { backupScheduler } from '@/services/backup-scheduler';
 import { AdvancedSettingsPageClient } from '@/components/settings/AdvancedSettingsPageClient';
 
 // Force dynamic rendering for real-time data
 export const dynamic = 'force-dynamic';
 
 export default async function AdvancedSettingsPage() {
-  // Fetch data server-side
-  const preferences = await userPreferencesService.getAllPreferences();
+  // Fetch all data server-side
+  const [preferences, taskStats, tags] = await Promise.all([
+    userPreferencesService.getAllPreferences(),
+    tasksService.getTaskStats(),
+    tagsService.getTags()
+  ]);
 
-  return <AdvancedSettingsPageClient initialPreferences={preferences} />;
+  // Compose backup data like the API does
+  const backups = await backupService.listBackups();
+  const schedulerStatus = backupScheduler.getStatus();
+  const config = backupService.getConfig();
+  
+  const backupData = {
+    backups,
+    scheduler: {
+      ...schedulerStatus,
+      nextBackup: schedulerStatus.nextBackup?.toISOString() || null
+    },
+    config
+  };
+
+  const dbStats = {
+    taskCount: taskStats.total,
+    tagCount: tags.length,
+    completionRate: taskStats.completionRate
+  };
+
+  return (
+    <AdvancedSettingsPageClient 
+      initialPreferences={preferences}
+      initialDbStats={dbStats}
+      initialBackupData={backupData}
+    />
+  );
 }

src/app/settings/backup/page.tsx

@@ -0,0 +1,26 @@
+import BackupSettingsPageClient from '@/components/settings/BackupSettingsPageClient';
+import { backupService } from '@/services/backup';
+import { backupScheduler } from '@/services/backup-scheduler';
+
+// Force dynamic rendering pour les données en temps réel
+export const dynamic = 'force-dynamic';
+
+export default async function BackupSettingsPage() {
+  // Fetch data server-side
+  const backups = await backupService.listBackups();
+  const schedulerStatus = backupScheduler.getStatus();
+  const config = backupService.getConfig();
+
+  const initialData = {
+    backups,
+    scheduler: {
+      ...schedulerStatus,
+      nextBackup: schedulerStatus.nextBackup ? schedulerStatus.nextBackup.toISOString() : null,
+    },
+    config,
+  };
+
+  return (
+    <BackupSettingsPageClient initialData={initialData} />
+  );
+}