feat(app): 展示真实点赞与评论计数

test/comment/comment_controller_test.dart

@@ -42,6 +42,27 @@ void main() {
     model.dispose();
   });
 
+  test('should_expose_exact_count_only_when_last_page_is_loaded', () async {
+    final repository = FakeCommentRepository(
+      pages: [
+        CommentPage(
+          comments: [commentFixture(id: '2')],
+          nextCursor: '2',
+          hasMore: true,
+        ),
+        CommentPage(comments: [commentFixture(id: '1')]),
+      ],
+    );
+    final model = controller(repository);
+
+    await model.load();
+    expect(model.exactCount, isNull);
+
+    await model.loadMore();
+    expect(model.exactCount, 2);
+    model.dispose();
+  });
+
   test('should_use_server_content_and_pending_status_when_review_is_returned', () async {
     final repository = FakeCommentRepository(
       publishResult: commentFixture(

test/comment/drama_comments_sheet_test.dart

@@ -62,11 +62,13 @@ void main() {
     await _pumpSheet(tester, repository: repository);
     expect(find.text('Great episode'), findsOneWidget);
     expect(find.byKey(const Key('comment-list-load-more')), findsOneWidget);
+    expect(find.byKey(const Key('comment-count-label')), findsNothing);
 
     await tester.tap(find.byKey(const Key('comment-list-load-more')));
     await tester.pumpAndSettle();
 
     expect(find.text('Second page'), findsOneWidget);
+    expect(find.text('Comments · 2'), findsOneWidget);
     expect(repository.pageCalls.last.cursor, '10');
   });
 

test/home/home_preview_layout_test.dart

@@ -147,6 +147,48 @@ void main() {
       'Fallback Drama',
     );
   });
+
+  testWidgets('should_show_server_like_count_when_count_is_available', (
+    tester,
+  ) async {
+    await tester.pumpWidget(
+      MaterialApp(
+        theme: AppTheme.dark(),
+        locale: const Locale('en'),
+        supportedLocales: AppLocalizations.supportedLocales,
+        localizationsDelegates: AppLocalizations.localizationsDelegates,
+        home: Builder(
+          builder: (context) => Scaffold(
+            body: HomeFeedOverlay(
+              l10n: AppLocalizations.of(context)!,
+              drama: _drama,
+              episode: const Episode(
+                id: 'count-episode',
+                number: 1,
+                title: 'Count Episode',
+                isFree: true,
+              ),
+              liked: true,
+              likeCount: 128,
+              saved: false,
+              onLike: () {},
+              onSave: () {},
+              onComments: () {},
+              onShare: () {},
+              onEpisodes: () {},
+              onDownload: () {},
+              onClear: () {},
+              onSearch: () {},
+            ),
+          ),
+        ),
+      ),
+    );
+    await tester.pumpAndSettle();
+
+    expect(find.byKey(const Key('rail-like-count')), findsOneWidget);
+    expect(find.text('128'), findsOneWidget);
+  });
 }
 
 const _drama = Drama(

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();
   });
 }