新增 Expo 与 Tauri 原生宿主壳

新增 HostBridge 原生宿主契约和 H5 native_app transport

新增 Expo React Native 移动壳并收紧 WebView 外链边界

新增 Tauri 桌面壳并用 capability 收口受控命令

更新宿主壳方案、文档索引和共享记忆

apps/mobile-shell/app.json

@@ -0,0 +1,22 @@
+{
+  "expo": {
+    "name": "Genarrative",
+    "slug": "genarrative-mobile-shell",
+    "scheme": "genarrative",
+    "version": "0.1.0",
+    "orientation": "portrait",
+    "userInterfaceStyle": "automatic",
+    "assetBundlePatterns": [
+      "**/*"
+    ],
+    "ios": {
+      "supportsTablet": true
+    },
+    "android": {
+      "package": "world.genarrative.mobile"
+    },
+    "extra": {
+      "genarrativeHostBridgeVersion": 1
+    }
+  }
+}