diff --git a/docs/project-memory/shared-memory/decision-log.md b/docs/project-memory/shared-memory/decision-log.md
index b51a7600c..b6e9fb583 100644
--- a/docs/project-memory/shared-memory/decision-log.md
+++ b/docs/project-memory/shared-memory/decision-log.md
@@ -3221,6 +3221,7 @@
 
 - 背景：Expo / Tauri 壳会把 `clientRuntime`、`hostShell` 和 `hostCapabilities` 写入 H5 URL，用于保留宿主上下文和路由状态。如果 H5 在 `host.getRuntime` 异步回包前把 URL query 中的 `hostCapabilities` 作为真实能力来源，深链旧参数或伪造 query 会让首屏短暂展示或触发原生动作。
 - 决策：H5 仍可用 URL query 判断宿主类型和保留上下文，但 `canUseNativeHostCapability` 只能信任真实 native bridge 存在且 `host.getRuntime` 已缓存的 capability；query 中的 `hostCapabilities` 不再参与能力门控。`host.getRuntime` 刷新只依赖真实 Expo WebView / Tauri invoke 注入，不依赖 query capability。桌面 Tauri 事件白名单必须等于桌面 capability 中已声明的事件子集，不得包含未声明的 `network.statusChanged`。
+- 2026-06-21 调整：H5 生产代码不得直接 import `src/services/host-bridge/nativeAppHostBridge.ts` 低层 transport；业务层、组件层和 wrapper 必须经 `src/services/host-bridge/hostBridge.ts` facade 使用原生能力，保证真实 runtime 回读、capability 门控、payload 归一和事件订阅门控始终生效。`scripts/check-native-shells.mjs` 负责扫描生产 H5 源码并拒绝绕过 facade 的直接 transport 依赖。
 - 影响范围：`src/services/host-bridge/hostBridge.ts`、H5 HostBridge 消费测试、`apps/desktop-shell/src-tauri/src/shell/events.rs`、`scripts/check-native-shells.mjs`。
 - 验证方式：`npm run test -- src/services/host-bridge/hostBridge.test.ts src/services/runtimeAudioFeedback.test.ts src/App.test.tsx src/components/common/CreativeAudioInputPanel.test.tsx src/components/common/PublishShareModal.test.tsx src/components/platform-entry/platformHostBridgeSync.test.ts`、`cargo test --manifest-path apps/desktop-shell/src-tauri/Cargo.toml shell::events`、`npm run check:native-shells`。
 
diff --git a/scripts/check-native-shells.mjs b/scripts/check-native-shells.mjs
index 46dba88fa..e6ce37ab3 100644
--- a/scripts/check-native-shells.mjs
+++ b/scripts/check-native-shells.mjs
@@ -22,6 +22,8 @@ const productionShellScanRoots = [
   'src/services/host-bridge',
 ];
 const h5HostBridgeFacadeModule = 'src/services/host-bridge/hostBridge';
+const h5NativeAppHostBridgeTransportModule =
+  'src/services/host-bridge/nativeAppHostBridge';
 const h5HostBridgeScannedFacadeImports = new Set([
   'canUseHostShareGrid',
   'captureHostImageFile',
@@ -1913,6 +1915,27 @@ function collectH5HostBridgeCallChainFiles() {
   return [...scannedFiles].sort();
 }
 
+function assertH5NativeAppTransportFacadeBoundary() {
+  const sourceFiles = collectFiles('src', shouldScanH5ProductionSourceFile);
+  const directTransportImports = [];
+
+  for (const file of sourceFiles) {
+    const source = fs.readFileSync(file, 'utf8');
+    const imports = extractImportSpecifiers(source).map((specifier) =>
+      importedModulePath(file, specifier),
+    );
+    if (imports.includes(h5NativeAppHostBridgeTransportModule)) {
+      directTransportImports.push(file);
+    }
+  }
+
+  if (directTransportImports.length > 0) {
+    throw new Error(
+      `H5 production code must use the HostBridge facade instead of native app transport directly: ${directTransportImports.join(', ')}`,
+    );
+  }
+}
+
 function assertNoDevScaffoldTermsInFiles(files, terms) {
   for (const file of files) {
     const source = fs.readFileSync(file, 'utf8');
@@ -3964,6 +3987,9 @@ assertH5NativeAppTransportTimeoutBoundaries();
 console.log('[check:native-shells] h5-native-app-message-source-boundaries');
 assertH5NativeAppMessageSourceBoundaries();
 
+console.log('[check:native-shells] h5-native-app-transport-facade-boundary');
+assertH5NativeAppTransportFacadeBoundary();
+
 console.log('[check:native-shells] production-shell-dev-scaffold-scan');
 assertNoProductionShellDevScaffoldTerms();