feat: expo-updates热更新完整实现 — Metro bundle嵌入APK

- @react-native/metro-config metro配置(代替expo/ExpoMetroConfig)
- index.js纯JS入口(避免TS编译依赖)
- metro.config.js: getDefaultConfig+mergeConfig
- bundle: npx react-native bundle → 879KB JS嵌入APK
- BUILD SUCCESSFUL 387tasks + APK已安装验证
- 屏幕输出: Yuzu GCA / v0.1.0 / expo-updates active

packages/client-android/package.json

@@ -2,7 +2,7 @@
   "name": "@yuzu-gca/client-android",
   "version": "0.1.0",
   "private": true,
-  "main": "expo-router/entry",
+  "main": "node_modules/expo/AppEntry.js",
   "scripts": {
     "start": "expo start",
     "android": "expo run:android",
@@ -12,7 +12,8 @@
     "ios": "expo run:ios"
   },
   "dependencies": {
-    "@react-native/gradle-plugin": "^0.86.0","expo": "~52.0.49",
+    "@react-native/gradle-plugin": "^0.86.0",
+    "expo": "~52.0.49",
     "expo-constants": "~17.0.0",
     "expo-file-system": "~18.0.0",
     "expo-status-bar": "~2.0.0",
@@ -22,6 +23,7 @@
     "react-native": "0.76.5"
   },
   "devDependencies": {
+    "@react-native-community/cli": "^20.2.0",
     "@types/react": "~18.3.0",
     "typescript": "^5.5.0"
   }