's'

app/page.tsx

@@ -84,6 +84,17 @@ export default function Home() {
 
   const getOrCreateUserId = useCallback(() => {
     let userId = getStorage("userId");
+    if (userId?.startsWith("{") && userId.includes("data")) {
+      try {
+        const parsed = JSON.parse(userId) as { data?: string };
+        if (parsed?.data) {
+          userId = parsed.data;
+          setStorage("userId", userId);
+        }
+      } catch {
+        userId = null;
+      }
+    }
     if (!userId) {
       userId = `user${Date.now()}`;
       setStorage("userId", userId);