feat: integrate UserPreferencesContext for improved preference management

- Added `UserPreferencesProvider` to `RootLayout` for centralized user preferences handling.
- Updated components to remove direct user preferences fetching, relying on context instead.
- Enhanced SSR data fetching by consolidating user preferences retrieval into a single service call.
- Cleaned up unused props in various components to streamline the codebase.

src/app/settings/advanced/page.tsx

@@ -1,4 +1,3 @@
-import { userPreferencesService } from '@/services/user-preferences';
 import { tasksService } from '@/services/tasks';
 import { tagsService } from '@/services/tags';
 import { backupService } from '@/services/backup';
@@ -10,8 +9,7 @@ export const dynamic = 'force-dynamic';
 
 export default async function AdvancedSettingsPage() {
   // Fetch all data server-side
-  const [preferences, taskStats, tags] = await Promise.all([
-    userPreferencesService.getAllPreferences(),
+  const [taskStats, tags] = await Promise.all([
     tasksService.getTaskStats(),
     tagsService.getTags()
   ]);
@@ -38,7 +36,6 @@ export default async function AdvancedSettingsPage() {
 
   return (
     <AdvancedSettingsPageClient 
-      initialPreferences={preferences}
       initialDbStats={dbStats}
       initialBackupData={backupData}
     />