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/weekly-manager/page.tsx

@@ -2,7 +2,6 @@ import { Header } from '@/components/ui/Header';
 import { ManagerSummaryService } from '@/services/manager-summary';
 import { tasksService } from '@/services/tasks';
 import { tagsService } from '@/services/tags';
-import { userPreferencesService } from '@/services/user-preferences';
 import { WeeklyManagerPageClient } from './WeeklyManagerPageClient';
 
 // Force dynamic rendering (no static generation)
@@ -10,11 +9,10 @@ export const dynamic = 'force-dynamic';
 
 export default async function WeeklyManagerPage() {
   // SSR - Récupération des données côté serveur
-  const [summary, initialTasks, initialTags, initialPreferences] = await Promise.all([
+  const [summary, initialTasks, initialTags] = await Promise.all([
     ManagerSummaryService.getManagerSummary(),
     tasksService.getTasks(),
-    tagsService.getTags(),
-    userPreferencesService.getAllPreferences()
+    tagsService.getTags()
   ]);
 
   return (
@@ -27,7 +25,6 @@ export default async function WeeklyManagerPage() {
             initialSummary={summary}
             initialTasks={initialTasks}
             initialTags={initialTags}
-            initialPreferences={initialPreferences}
           />
         </div>
       </div>