重构逐句视频播放器

messages/en-US.json

@@ -150,7 +150,43 @@
     "previous": "Previous",
     "next": "Next",
     "restart": "Restart",
-    "autoPause": "Auto Pause ({enabled})"
+    "autoPause": "Auto Pause ({enabled})",
+    "playbackSpeed": "Playback Speed",
+    "subtitleSettings": "Subtitle Settings",
+    "fontSize": "Font Size",
+    "backgroundColor": "Background Color",
+    "textColor": "Text Color",
+    "fontFamily": "Font Family",
+    "opacity": "Opacity",
+    "position": "Position",
+    "top": "Top",
+    "center": "Center",
+    "bottom": "Bottom",
+    "keyboardShortcuts": "Keyboard Shortcuts",
+    "uploadVideoAndSubtitle": "Please upload video and subtitle files",
+    "uploadVideoFile": "Please upload video file",
+    "uploadSubtitleFile": "Please upload subtitle file",
+    "processingSubtitle": "Processing subtitle file...",
+    "needBothFiles": "Both video and subtitle files are required to start learning",
+    "videoFile": "Video File",
+    "subtitleFile": "Subtitle File",
+    "uploaded": "Uploaded",
+    "notUploaded": "Not Uploaded",
+    "upload": "Upload",
+    "autoPauseStatus": "Auto Pause: {enabled}",
+    "on": "On",
+    "off": "Off",
+    "videoUploadFailed": "Video upload failed",
+    "subtitleUploadFailed": "Subtitle upload failed",
+    "subtitleLoadSuccess": "Subtitle file loaded successfully",
+    "subtitleLoadFailed": "Subtitle file loading failed",
+    "shortcuts": {
+      "playPause": "Play/Pause",
+      "next": "Next",
+      "previous": "Previous",
+      "restart": "Restart",
+      "autoPause": "Toggle Auto Pause"
+    }
   },
   "text_speaker": {
     "generateIPA": "Generate IPA",