统一 H5 宿主壳能力协议

新增 HostBridge 通用宿主能力服务与测试

迁移登录支付分享订阅入口到通用 HostBridge API

保留微信小程序旧接口兼容包装

补充宿主壳协议文档与项目记忆

src/main.tsx

@@ -10,7 +10,7 @@ import {lockMobileViewportZoom} from './mobileViewportZoomLock';
 import {resolveAppRoute} from './routing/appRoutes';
 import {RouteImageReadyGate} from './routing/RouteImageReadyGate';
 import {RouteLoadingScreen} from './routing/RouteLoadingScreen';
-import {isWechatMiniProgramWebViewRuntime} from './services/authService';
+import {getHostRuntime} from './services/host-bridge/hostBridge';
 
 type AppRoot = ReturnType<typeof createRoot>;
 
@@ -28,7 +28,7 @@ if (!rootElement) {
 }
 
 function markWechatMiniProgramRuntime() {
-  if (isWechatMiniProgramWebViewRuntime()) {
+  if (getHostRuntime().kind === 'wechat_mini_program') {
     document.documentElement.dataset.wechatMiniProgramRuntime = 'true';
   }
 }