Initial commit

lib/domain/repositories/exercise_repository.dart

@@ -0,0 +1,13 @@
+import 'package:trainhub_flutter/domain/entities/exercise.dart';
+
+abstract class ExerciseRepository {
+  Future<List<ExerciseEntity>> getAll();
+  Future<ExerciseEntity> create({
+    required String name,
+    String? instructions,
+    String? tags,
+    String? videoUrl,
+  });
+  Future<void> update(ExerciseEntity exercise);
+  Future<void> delete(String id);
+}