Fixed 'use client' usage.

src/components/layout/MenuLayout.tsx

@@ -0,0 +1,24 @@
+import { ReactNode } from 'react';
+import { usePathname } from 'next/navigation';
+import SideNav from 'components/layout/SideNav';
+import styles from './MenuLayout.module.css';
+
+export function MenuLayout({ items = [], children }: { items: any[]; children: ReactNode }) {
+  const pathname = usePathname();
+  const cloudMode = !!process.env.cloudMode;
+
+  const getKey = () => items.find(({ url }) => pathname === url)?.key;
+
+  return (
+    <div className={styles.layout}>
+      {!cloudMode && (
+        <div className={styles.menu}>
+          <SideNav items={items} shallow={true} selectedKey={getKey()} />
+        </div>
+      )}
+      <div className={styles.content}>{children}</div>
+    </div>
+  );
+}
+
+export default MenuLayout;