Initial commit

lib/domain/entities/training_plan.dart

@@ -0,0 +1,18 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+import 'package:trainhub_flutter/domain/entities/training_section.dart';
+
+part 'training_plan.freezed.dart';
+
+@freezed
+class TrainingPlanEntity with _$TrainingPlanEntity {
+  const factory TrainingPlanEntity({
+    required String id,
+    required String name,
+    @Default([]) List<TrainingSectionEntity> sections,
+  }) = _TrainingPlanEntity;
+
+  const TrainingPlanEntity._();
+
+  int get totalExercises =>
+      sections.fold(0, (sum, s) => sum + s.exercises.length);
+}