refactor(ui): 清理 K26 旧 UI 与死代码

lib/l10n/app_localizations.dart

@@ -772,18 +772,6 @@ abstract class AppLocalizations {
   /// **'Playing now'**
   String get nowPlaying;
 
-  /// No description provided for @watchFullscreen.
-  ///
-  /// In en, this message translates to:
-  /// **'Watch in landscape'**
-  String get watchFullscreen;
-
-  /// No description provided for @exitFullscreen.
-  ///
-  /// In en, this message translates to:
-  /// **'Exit fullscreen'**
-  String get exitFullscreen;
-
   /// No description provided for @pictureInPicture.
   ///
   /// In en, this message translates to:
@@ -1222,18 +1210,6 @@ abstract class AppLocalizations {
   /// **'Swipe up for next'**
   String get swipeForNext;
 
-  /// No description provided for @clearScreen.
-  ///
-  /// In en, this message translates to:
-  /// **'Clear screen'**
-  String get clearScreen;
-
-  /// No description provided for @exitClearScreen.
-  ///
-  /// In en, this message translates to:
-  /// **'Exit clear screen'**
-  String get exitClearScreen;
-
   /// No description provided for @logIn.
   ///
   /// In en, this message translates to: