test: 按新 UI 基线重写过期用例

覆盖 155 条失败与 4 处编译错误：入口改走推荐流 tab、弹框换 AppGlowDialog、
rail 尺寸与底部锚定、子页标题字重 w400、底栏选中品牌红、收藏文案改收藏短剧。
全量 flutter test 775 通过。

test/discover/filter_page_test.dart

@@ -152,7 +152,7 @@ Future<void> _pumpFilterPage(WidgetTester tester) async {
     ),
   );
   await tester.pumpAndSettle();
-  Navigator.of(tester.element(find.byKey(const Key('home-search-entry'))))
+  Navigator.of(tester.element(find.byKey(const Key('home-tabs'))))
       .push<void>(
         MaterialPageRoute(builder: (_) => const DiscoverPage()),
       );
@@ -193,7 +193,7 @@ void _expectUnifiedHeader(WidgetTester tester, Key backKey) {
   expect(tester.getSize(find.byKey(backKey)), const Size(40, 40));
   final title = tester.widget<Text>(find.byKey(const Key('subpage-title')));
   expect(title.style?.fontSize, 18);
-  expect(title.style?.fontWeight, FontWeight.w800);
+  expect(title.style?.fontWeight, FontWeight.w400);
 }
 
 Drama _drama({

test/discover/home_all_dramas_grid_test.dart

@@ -424,7 +424,7 @@ Future<void> _pumpTheater(
     ),
   );
   await tester.pumpAndSettle();
-  Navigator.of(tester.element(find.byKey(const Key('home-search-entry'))))
+  Navigator.of(tester.element(find.byKey(const Key('home-tabs'))))
       .push<void>(
         MaterialPageRoute(builder: (_) => const DiscoverPage()),
       );

test/discover/theater_pages_test.dart

@@ -312,7 +312,7 @@ Future<void> _pumpTheater(
     ),
   );
   await tester.pumpAndSettle();
-  Navigator.of(tester.element(find.byKey(const Key('home-search-entry'))))
+  Navigator.of(tester.element(find.byKey(const Key('home-tabs'))))
       .push<void>(
         MaterialPageRoute(builder: (_) => const DiscoverPage()),
       );
@@ -371,5 +371,5 @@ void _expectUnifiedHeader(WidgetTester tester, Key backKey) {
   expect(tester.getSize(find.byKey(backKey)), const Size(40, 40));
   final title = tester.widget<Text>(find.byKey(const Key('subpage-title')));
   expect(title.style?.fontSize, 18);
-  expect(title.style?.fontWeight, FontWeight.w800);
+  expect(title.style?.fontWeight, FontWeight.w400);
 }