feat: implement drag-and-drop reordering for daily checkboxes

- Added DnD functionality to `DailySection` for reordering checkboxes using `@dnd-kit/core` and `@dnd-kit/sortable`.
- Introduced `onReorderCheckboxes` prop to handle server updates after reordering.
- Updated `useDaily` hook to streamline error handling during reordering.
- Cleaned up `Header` component by removing unnecessary syncing text.
- Adjusted `DailyPageClient` to pass reorder function to `DailySection`.

hooks/useDaily.ts

@@ -329,10 +329,7 @@ export function useDaily(initialDate?: Date, initialDailyView?: DailyView): UseD
       const dailyId = data.date.toISOString().split('T')[0];
       const result = await reorderCheckboxesAction(dailyId, data.checkboxIds);
       
-      if (result.success) {
-        // Rafraîchir pour obtenir l'ordre correct
-        await refreshDaily();
-      } else {
+      if (!result.success) {
         setError(result.error || 'Erreur lors du réordonnancement');
       }
     } catch (err) {
@@ -341,7 +338,7 @@ export function useDaily(initialDate?: Date, initialDailyView?: DailyView): UseD
     } finally {
       setSaving(false);
     }
-  }, [refreshDaily]);
+  }, []);
 
   const goToPreviousDay = useCallback(async (): Promise<void> => {
     const previousDay = new Date(currentDate);