补齐移动壳导航单测

移动壳 navigation helper 增加独立单测覆盖

原生壳结构门禁登记移动导航测试

宿主壳文档和共享决策同步导航测试边界

apps/mobile-shell/scripts/check-config.mjs

@@ -48,6 +48,14 @@ const hostBridgeNavigationSource = fs.readFileSync(
   hostBridgeNavigationPath,
   'utf8',
 );
+const hostBridgeNavigationTestPath = new URL(
+  '../src/host-bridge/navigation.test.ts',
+  import.meta.url,
+);
+const hostBridgeNavigationTestSource = fs.readFileSync(
+  hostBridgeNavigationTestPath,
+  'utf8',
+);
 const hostBridgeNetworkPath = new URL(
   '../src/host-bridge/network.ts',
   import.meta.url,
@@ -1928,6 +1936,22 @@ if (
     'mobile shell app.openExternalUrl must normalize payloads and use the shared external navigation helper',
   );
 }
+for (const snippet of [
+  'openMobileHostBridgeExternalUrl',
+  'openMobileHostBridgeNativePage',
+  'reloadMobileHostBridgeWebView',
+  'Linking.canOpenURL',
+  'Linking.openURL',
+  'javascript:alert(1)',
+  'external URL cannot be opened',
+  'navigation.openNativePage unsupported in mobile shell',
+  'app.reloadWebView unsupported in mobile shell',
+  'hostCapabilities',
+]) {
+  if (!hostBridgeNavigationTestSource.includes(snippet)) {
+    throw new Error(`mobile shell HostBridge navigation test missing ${snippet}`);
+  }
+}
 if (
   !clipboardSource.includes(
     'const clipboardText = normalizeHostBridgeClipboardText(',