fixed rating error + fixed background not changing error

backend/api/views.py

@@ -1,6 +1,6 @@
 from django.core.mail import send_mail
 from django.conf import settings
-from rest_framework import viewsets, permissions, status, filters
+from rest_framework import viewsets, permissions, status, filters, serializers
 from rest_framework.response import Response
 from rest_framework.decorators import action
 from django.db.models import Avg, Q

frontend/src/App.tsx

@@ -288,6 +288,12 @@ const App: React.FC = () => {
 
   const theme = useMemo(() => getTheme(themeName), [themeName]);
 
+  useEffect(() => {
+    // Update body styles to match theme immediately (overriding index.html blocking script)
+    document.body.style.backgroundColor = theme.palette.background.default;
+    document.body.style.color = theme.palette.text.primary;
+  }, [theme]);
+
   const handleMarkAllRead = async () => {
     try {
         await api.post('notifications/mark_all_read/');