feat(frontend): App 路由集成 + 木纹风格 CSS

App.tsx 添加 menu/game/replay 三页面路由切换，MainMenu 新增
onReplayStart 属性区分对局与回放入口。App.css 实现经典木纹
视觉风格（深棕底色、米黄文字、皮革纹理按钮），index.css 基础
重置。修复 tsconfig 中 erasableSyntaxOnly 无效选项并安装
@types/node。

package.json

@@ -11,21 +11,22 @@
     "test:watch": "vitest --watch"
   },
   "dependencies": {
+    "@tauri-apps/api": "^2.0.0",
+    "@tauri-apps/plugin-opener": "^2.0.0",
+    "i18next": "^24.0.0",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
-    "zustand": "^5.0.0",
-    "i18next": "^24.0.0",
     "react-i18next": "^15.0.0",
-    "@tauri-apps/api": "^2.0.0",
-    "@tauri-apps/plugin-opener": "^2.0.0"
+    "zustand": "^5.0.0"
   },
   "devDependencies": {
+    "@tauri-apps/cli": "^2.0.0",
+    "@types/node": "^25.9.1",
     "@types/react": "^19.0.0",
     "@types/react-dom": "^19.0.0",
     "@vitejs/plugin-react": "^4.4.0",
     "typescript": "~5.7.0",
     "vite": "^6.0.0",
-    "vitest": "^3.0.0",
-    "@tauri-apps/cli": "^2.0.0"
+    "vitest": "^3.0.0"
   }
 }