diff --git a/scripts/check-native-shells.mjs b/scripts/check-native-shells.mjs
index 015573825..300b2bdcc 100644
--- a/scripts/check-native-shells.mjs
+++ b/scripts/check-native-shells.mjs
@@ -2152,6 +2152,32 @@ function extractFunctionSource(source, functionName) {
   throw new Error(`unterminated function body ${functionName}`);
 }
 
+function extractRustFunctionSource(source, functionName) {
+  const start = source.indexOf(`fn ${functionName}`);
+  if (start === -1) {
+    throw new Error(`unable to read Rust function ${functionName}`);
+  }
+
+  const openBrace = source.indexOf('{', start);
+  if (openBrace === -1) {
+    throw new Error(`unable to read Rust function body ${functionName}`);
+  }
+
+  let depth = 0;
+  for (let index = openBrace; index < source.length; index += 1) {
+    if (source[index] === '{') {
+      depth += 1;
+    } else if (source[index] === '}') {
+      depth -= 1;
+      if (depth === 0) {
+        return source.slice(start, index + 1);
+      }
+    }
+  }
+
+  throw new Error(`unterminated Rust function body ${functionName}`);
+}
+
 function extractTsStringObject(source, exportName) {
   const match = source.match(
     new RegExp(`export const ${exportName}\\s*=\\s*\\{([\\s\\S]*?)\\}\\s*as const;`),
@@ -3710,6 +3736,36 @@ function assertWechatShareGridFailureBoundaries() {
   }
 }
 
+function assertDesktopNavigationEventBoundaries() {
+  const desktopShellNavigationSource = fs.readFileSync(
+    'apps/desktop-shell/src-tauri/src/shell/navigation.rs',
+    'utf8',
+  );
+  const desktopNavigationStateScriptSource = extractRustFunctionSource(
+    desktopShellNavigationSource,
+    'desktop_navigation_state_script',
+  );
+
+  if (
+    !desktopNavigationStateScriptSource.includes(
+      "console.warn('desktop navigation state sync failed')",
+    )
+  ) {
+    throw new Error(
+      'desktop shell navigation state diagnostics must log a stable label',
+    );
+  }
+  if (
+    desktopNavigationStateScriptSource.includes(
+      "console.warn('desktop navigation state sync failed', error)",
+    )
+  ) {
+    throw new Error(
+      'desktop shell navigation state diagnostics must not log native error objects',
+    );
+  }
+}
+
 function assertHostBridgeLayerLayout() {
   for (const [label, values] of [
     ['wechat host bridge files expectation', expectedWechatHostBridgeFiles],
@@ -3980,6 +4036,9 @@ assertWechatWebViewPageEventBoundaries();
 console.log('[check:native-shells] wechat-share-grid-failure-boundaries');
 assertWechatShareGridFailureBoundaries();
 
+console.log('[check:native-shells] desktop-navigation-event-boundaries');
+assertDesktopNavigationEventBoundaries();
+
 console.log('[check:native-shells] h5-host-bridge-event-subscription-gates');
 assertH5HostBridgeEventSubscriptionGates();