diff --git a/scripts/check-native-shells.mjs b/scripts/check-native-shells.mjs
index 423154400..2e4fd3631 100644
--- a/scripts/check-native-shells.mjs
+++ b/scripts/check-native-shells.mjs
@@ -42,6 +42,14 @@ const aiGameCreatorProjectDevelopmentSource = fs.readFileSync(
   'apps/ai-game-creator-shell/src/view/project-development/index.tsx',
   'utf8',
 );
+const aiGameCreatorLocalGamePreviewFrameSource = fs.readFileSync(
+  'apps/ai-game-creator-shell/src/features/project-workspace/LocalGamePreviewFrame.tsx',
+  'utf8',
+);
+const aiGameCreatorSupervisorChatOnlyViewSource = fs.readFileSync(
+  'apps/ai-game-creator-shell/src/features/project-workspace/SupervisorChatOnlyView.tsx',
+  'utf8',
+);
 const aiGameCreatorPreviewRustSource = fs.readFileSync(
   'apps/ai-game-creator-shell/src-tauri/src/preview.rs',
   'utf8',
@@ -2409,20 +2417,38 @@ function assertAiGameCreatorShellUserDevBoundary() {
   }
 
   const clientPreviewFrameCount = [
-    ...aiGameCreatorProjectDevelopmentSource.matchAll(/<iframe\b/g),
+    ...aiGameCreatorLocalGamePreviewFrameSource.matchAll(/<iframe\b/g),
   ].length;
   if (clientPreviewFrameCount !== 1) {
     throw new Error(
       'AI game creator client workbench must own exactly one local preview frame',
     );
   }
+  const projectDevelopmentPreviewMountCount = [
+    ...aiGameCreatorProjectDevelopmentSource.matchAll(
+      /<LocalGamePreviewFrame\b/g,
+    ),
+  ].length;
+  const supervisorChatPreviewMountCount = [
+    ...aiGameCreatorSupervisorChatOnlyViewSource.matchAll(
+      /<LocalGamePreviewFrame\b/g,
+    ),
+  ].length;
+  if (
+    projectDevelopmentPreviewMountCount !== 1 ||
+    supervisorChatPreviewMountCount !== 1
+  ) {
+    throw new Error(
+      'AI game creator client views must delegate preview rendering to the shared local preview frame',
+    );
+  }
   for (const snippet of [
     'function resolveEmbeddedPreviewUrl(',
     "url.protocol !== 'http:' || url.hostname !== '127.0.0.1'",
     'sandbox="allow-scripts allow-same-origin allow-forms allow-pointer-lock"',
-    'src={embeddedPreviewUrl}',
+    'src={embeddedUrl}',
   ]) {
-    if (!aiGameCreatorProjectDevelopmentSource.includes(snippet)) {
+    if (!aiGameCreatorLocalGamePreviewFrameSource.includes(snippet)) {
       throw new Error(
         `AI game creator embedded preview boundary drifted: missing ${snippet}`,
       );