feat(flutter): 应用浅色暖橙视觉主题

test/home/k28_a_navigation_test.dart

@@ -8,6 +8,7 @@ import 'package:fruitshorts/core/data/models/watch_progress.dart';
 import 'package:fruitshorts/core/data/repositories/favorite_repository.dart';
 import 'package:fruitshorts/core/data/repositories/playback_repository.dart';
 import 'package:fruitshorts/core/data/repositories/watch_history_repository.dart';
+import 'package:fruitshorts/core/theme/app_colors.dart';
 import 'package:fruitshorts/pages/player/player_view.dart';
 import 'package:shared_preferences_platform_interface/in_memory_shared_preferences_async.dart';
 import 'package:shared_preferences_platform_interface/shared_preferences_async_platform_interface.dart';
@@ -32,8 +33,9 @@ void main() {
     for (final key in _tabKeys) {
       expect(find.byKey(key), findsOneWidget);
     }
+    expect(find.byKey(const Key('nav-center-action')), findsOneWidget);
 
-    await tester.tap(find.byKey(const Key('tab-create')));
+    await tester.tap(find.byKey(const Key('nav-center-action')));
     await tester.pumpAndSettle();
 
     expect(find.byKey(const Key('create-page')), findsOneWidget);
@@ -46,12 +48,22 @@ void main() {
 
     expect(_chip(tester, 'home-channel-hot').selected, isTrue);
     expect(_chip(tester, 'home-channel-free').selected, isFalse);
+    expect(_chip(tester, 'home-channel-hot').selectedColor, AppColors.blue);
+    expect(_chip(tester, 'home-channel-free').backgroundColor, AppColors.card);
+    expect(
+      _chip(tester, 'home-channel-free').labelStyle?.color,
+      AppColors.onSurface,
+    );
 
     await tester.tap(find.byKey(const Key('home-channel-free')));
     await tester.pumpAndSettle();
 
     expect(_chip(tester, 'home-channel-hot').selected, isFalse);
     expect(_chip(tester, 'home-channel-free').selected, isTrue);
+    expect(
+      _chip(tester, 'home-channel-free').labelStyle?.color,
+      AppColors.onPrimary,
+    );
   });
 
   testWidgets('should_open_theater_search_when_home_search_is_tapped', (