diff --git a/scripts/check-native-shells.mjs b/scripts/check-native-shells.mjs
index 7c61b101c..c11327b07 100644
--- a/scripts/check-native-shells.mjs
+++ b/scripts/check-native-shells.mjs
@@ -1624,6 +1624,15 @@ const productionShellExcludedPaths = new Set([
   'apps/desktop-shell/src-tauri/gen',
   'apps/desktop-shell/src-tauri/permissions/autogenerated',
 ]);
+const generatedNativeShellArtifactPaths = [
+  'build/native',
+  'dist',
+  'apps/mobile-shell/.expo',
+  'apps/mobile-shell/.expo-export-smoke',
+  'apps/desktop-shell/src-tauri/target',
+  'apps/desktop-shell/src-tauri/gen',
+  'apps/desktop-shell/src-tauri/permissions/autogenerated',
+];
 const productionShellDevScaffoldTerms = [
   'mo' + 'ck',
   'fa' + 'ke',
@@ -1791,6 +1800,31 @@ function shouldScanH5ProductionSourceFile(filePath) {
   return h5ProductionSourceExtensions.has(path.extname(filePath));
 }
 
+function assertNoTrackedGeneratedNativeShellArtifacts() {
+  const result = spawnSync('git', ['ls-files', ...generatedNativeShellArtifactPaths], {
+    cwd: process.cwd(),
+    encoding: 'utf8',
+  });
+  if (result.error) {
+    throw new Error(`unable to check generated native shell artifacts: ${result.error.message}`);
+  }
+  if (result.status !== 0) {
+    throw new Error(
+      `unable to check generated native shell artifacts: ${result.stderr.trim()}`,
+    );
+  }
+
+  const trackedArtifacts = result.stdout
+    .split('\n')
+    .map((entry) => entry.trim())
+    .filter(Boolean);
+  if (trackedArtifacts.length > 0) {
+    throw new Error(
+      `generated native shell artifacts must stay untracked: ${trackedArtifacts.join(', ')}`,
+    );
+  }
+}
+
 function collectProductionShellFiles(entryPath) {
   const normalizedPath = entryPath.split(path.sep).join('/');
   if (productionShellExcludedPaths.has(normalizedPath)) {
@@ -4217,6 +4251,9 @@ assertH5NativeAppMessageSourceBoundaries();
 console.log('[check:native-shells] h5-native-app-transport-facade-boundary');
 assertH5NativeAppTransportFacadeBoundary();
 
+console.log('[check:native-shells] generated-native-shell-artifact-boundary');
+assertNoTrackedGeneratedNativeShellArtifacts();
+
 console.log('[check:native-shells] production-shell-dev-scaffold-scan');
 assertNoProductionShellDevScaffoldTerms();