feat(app): 展示真实点赞与评论计数

test/interaction/interaction_controller_test.dart

@@ -26,6 +26,23 @@ void main() {
 
     expect(result.isSuccess, isTrue);
     expect(controller.isLiked('5'), isFalse);
+    expect(controller.likeCount('5'), 0);
+    controller.dispose();
+  });
+
+  test('should_expose_latest_server_count_when_two_toggles_succeed', () async {
+    final repository = FakeInteractionRepository(
+      nextLikeResult: const LikeToggleResult(liked: true, count: 12),
+    );
+    final controller = InteractionController(repository);
+
+    await controller.toggleDramaLike('5');
+    expect(controller.likeCount('5'), 12);
+
+    repository.nextLikeResult = const LikeToggleResult(liked: false, count: 11);
+    await controller.toggleDramaLike('5');
+
+    expect(controller.likeCount('5'), 11);
     controller.dispose();
   });
 
@@ -55,6 +72,7 @@ void main() {
     controller.clear();
 
     expect(controller.isLiked('5'), isFalse);
+    expect(controller.likeCount('5'), isNull);
     controller.dispose();
   });
 }