refactor(ui): 清理 K26 旧 UI 与死代码

lib/l10n/app_zh.arb

@@ -142,8 +142,6 @@
   "reportFailed": "举报提交失败，请重试。",
   "shareFailed": "无法打开系统分享面板。",
   "nowPlaying": "正在播放",
-  "watchFullscreen": "横屏全屏观看",
-  "exitFullscreen": "退出全屏",
   "pictureInPicture": "画中画",
   "pipUnavailable": "此设备无法使用画中画",
   "originalTag": "原创",
@@ -234,8 +232,6 @@
   "myListTab": "片单",
   "watchFull": "看全集",
   "swipeForNext": "上滑看下一部",
-  "clearScreen": "清屏",
-  "exitClearScreen": "退出清屏",
   "logIn": "登录",
   "logInHint": "登录后保存金币和片单",
   "rewards": "奖励",