feat: update Daily management features and enhance date handling

- Marked the calendar/history view of dailies as completed in the TODO list.
- Improved date formatting in `formatDateForAPI` to avoid timezone issues.
- Added `getDailyDates` method in `DailyClient` and `DailyService` to retrieve all dates with dailies.
- Enhanced `POST` route to robustly parse date input for better error handling.
- Integrated daily dates loading in `DailyPageClient` for calendar display.

src/app/api/daily/dates/route.ts

@@ -0,0 +1,20 @@
+import { NextResponse } from 'next/server';
+import { dailyService } from '@/services/daily';
+
+/**
+ * API route pour récupérer toutes les dates avec des dailies
+ * GET /api/daily/dates
+ */
+export async function GET() {
+  try {
+    const dates = await dailyService.getDailyDates();
+    return NextResponse.json({ dates });
+    
+  } catch (error) {
+    console.error('Erreur lors de la récupération des dates:', error);
+    return NextResponse.json(
+      { error: 'Erreur interne du serveur' },
+      { status: 500 }
+    );
+  }
+}