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/theme/app_theme_test.dart

@@ -18,8 +18,8 @@ double _contrast(Color foreground, Color background) {
 
 void main() {
   test('should_expose_dark_visual_tokens', () {
-    expect(AppColors.blue, const Color(0xFFFF6B2C));
-    expect(AppColors.bluePressed, const Color(0xFFE55A1F));
+    expect(AppColors.blue, const Color(0xFFF04E4E));
+    expect(AppColors.bluePressed, const Color(0xFFD64040));
     expect(AppColors.secondary, const Color(0xFFB0B0B0));
     expect(AppColors.ink, const Color(0xFF000000));
     expect(AppColors.card, const Color(0xFF16161A));