feat(recommend): 轮播只保留标题简介并重做顶部导航

test/recommend/recommend_refresh_scheduling_test.dart

@@ -60,7 +60,7 @@ void main() {
     expect(fixture.controller.refreshCalls, 2);
   });
 
-  testWidgets('should_auto_retry_three_times_then_show_network_error', (
+  testWidgets('should_allow_manual_retry_after_auto_retries_are_exhausted', (
     tester,
   ) async {
     final fixture = await _pumpFailingRecommend(tester);
@@ -89,7 +89,14 @@ void main() {
     expect(find.byKey(const Key('recommend-feed-skeleton')), findsNothing);
     expect(find.byKey(const Key('recommend-feed-empty')), findsOneWidget);
     expect(find.text(l10n.networkError), findsOneWidget);
-    expect(find.text(l10n.retry), findsNothing);
+    expect(find.text(l10n.retry), findsOneWidget);
+
+    await tester.tap(find.byKey(const Key('recommend-feed-retry')));
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 1));
+
+    expect(fixture.controller.refreshCalls, 5);
+    expect(find.byKey(const Key('recommend-feed-skeleton')), findsOneWidget);
   });
 
   testWidgets('should_cancel_pending_auto_retry_when_disposed', (tester) async {