Reestructuracion de la app

lib/data/note_repository.dart

@@ -56,6 +56,10 @@ class NoteRepository {
     return categories;
   }
 
+  Future<DateTime?> getLastSyncAt() async {
+    return _authApi.getLastSyncAt();
+  }
+
   Future<void> createCategory(Category category) async {
     debugPrint('createCategory called with: ${category.name}');