fix: i18n all settings labels, add ja to language select, dynamic lang options

src/locales/zh.json

@@ -26,6 +26,14 @@
     "achievements": "成就",
     "gallery": "画廊",
     "noAutoSave": "暂无自动存档",
-    "autoSaveHint": "游戏会在每次场景切换时自动保存到槽位 0"
+    "autoSaveHint": "游戏会在每次场景切换时自动保存到槽位 0",
+    "language": "语言",
+    "subtitleSize": "字幕字号",
+    "subtitleBg": "字幕背景",
+    "qteTimeRelax": "QTE 时限放宽",
+    "qteSingleKey": "QTE 按键简化",
+    "antiMistap": "防误触延迟",
+    "pauseEnabled": "可暂停",
+    "none": "无"
   }
 }