接入移动壳返回栈事件

移动壳声明 host.events 和 navigation.canGoBack 能力

Expo WebView 导航状态变化时向 H5 注入返回栈事件

H5 native_app transport 支持订阅 HostBridge 事件

补充事件订阅测试、移动壳能力测试和配置守卫

更新宿主壳方案和团队共享决策记录

apps/mobile-shell/src/mobileHostBridge.test.ts

@@ -101,6 +101,11 @@ describe('handleMobileHostBridgeMessage', () => {
     expect(
       (okResponse.result as { capabilities: string[] }).capabilities,
     ).toContain('navigation.openNativePage');
+    expect(
+      (okResponse.result as { capabilities: string[] }).capabilities,
+    ).toEqual(
+      expect.arrayContaining(['host.events', 'navigation.canGoBack']),
+    );
   });
 
   test('navigation.openNativePage 把同源路径切到移动壳 WebView', async () => {

apps/mobile-shell/src/mobileHostBridge.ts

@@ -22,9 +22,11 @@ import { resolveMobileShellWebViewUrl } from './mobileShellNavigation';
 
 export const MOBILE_HOST_CAPABILITIES: HostBridgeCapability[] = [
   'host.getRuntime',
+  'host.events',
   'share.open',
   'share.setTarget',
   'navigation.openNativePage',
+  'navigation.canGoBack',
   'app.openExternalUrl',
   'clipboard.writeText',
   'haptics.impact',