refactor(ui): 清理 K26 旧 UI 与死代码

lib/l10n/app_localizations_en.dart

@@ -360,12 +360,6 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get nowPlaying => 'Playing now';
 
-  @override
-  String get watchFullscreen => 'Watch in landscape';
-
-  @override
-  String get exitFullscreen => 'Exit fullscreen';
-
   @override
   String get pictureInPicture => 'Picture in picture';
 
@@ -604,12 +598,6 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get swipeForNext => 'Swipe up for next';
 
-  @override
-  String get clearScreen => 'Clear screen';
-
-  @override
-  String get exitClearScreen => 'Exit clear screen';
-
   @override
   String get logIn => 'Log in';