feat(android): OTA双轨更新 — shared版本号+Android Expo/PackageInstaller

- packages/shared: 版本号解析 vX.Y.Z-dav-{client}-{build} + manifest远程检查
- packages/client-android: Expo52 + expo-updates JS bundle OTA
- PackageInstallerModule.kt: APK静默安装原生模块（~60行Kotlin）
- monorepo: pnpm workspace + 版本号体系

packages/client-android/manifest.json

@@ -0,0 +1,12 @@
+{
+  "version": "0.1.0",
+  "builds": {
+    "android": {
+      "tag": "v0.1.0-dav-android-1",
+      "url": "https://git.childish-ghost.com/LukeMackin/Yuzu-GCA/releases/download/v0.1.0-dav-android-1/gca-0.1.0.apk",
+      "sha256": "PLACEHOLDER",
+      "size": 0,
+      "minVersion": "0.1.0"
+    }
+  }
+}