minor fixes

src/app/note/components/mentions/user.tsx

@@ -0,0 +1,11 @@
+import { useProfile } from '@lume/utils/hooks/useProfile';
+import { shortenKey } from '@lume/utils/shortenKey';
+
+export const MentionUser = (props: { children: any[] }) => {
+  const pubkey = props.children[0];
+  const { user } = useProfile(pubkey);
+
+  return (
+    <span className="cursor-pointer text-fuchsia-500">@{user?.name || user?.display_name || shortenKey(pubkey)}</span>
+  );
+};