hint messages update

frontend/src/pages/Chat.jsx

@@ -137,15 +137,18 @@ export default function Chat() {
     }).catch(() => {});
   }, [features.loginType, features.inGuardiansGroup]);
 
-  // Close help — open deferred add-child popup if pending
+  // Close help — open deferred add-child popup if pending, or settings for first-time default admin
   const handleHelpClose = useCallback(() => {
     if (addChildPending) {
       setAddChildPending(false);
       setModal('addchild');
+    } else if (!helpDismissed && user?.is_default_admin && !localStorage.getItem('rosterchirp_admin_setup_shown')) {
+      localStorage.setItem('rosterchirp_admin_setup_shown', '1');
+      setModal('settings');
     } else {
       setModal(null);
     }
-  }, [addChildPending]);
+  }, [addChildPending, helpDismissed, user]);
 
   // Register / refresh push subscription — FCM for Android/Chrome, Web Push for iOS
   useEffect(() => {