resolve issues with new features

frontend/src/contexts/AuthContext.tsx

@@ -1,5 +1,5 @@
 import React, { createContext, useCallback, useContext, useState, useEffect, ReactNode } from 'react';
-import { AuthContextType, AuthState, User } from '../types/auth.types';
+import { AuthContextType, AuthState } from '../types/auth.types';
 import { authService } from '../services/auth';
 import { getToken, setToken, removeToken, getUser, setUser, removeUser, setRefreshToken, removeRefreshToken } from '../utils/storage';
 import { useNotification } from './NotificationContext';

frontend/src/contexts/ChatContext.tsx

@@ -22,11 +22,20 @@ export const ChatProvider: React.FC<ChatProviderProps> = ({ children }) => {
   const [selectedRoomToken, setSelectedRoomToken] = useState<string | null>(null);
   const { chatPanelOpen } = useLayout();
 
+  const { data: connData } = useQuery({
+    queryKey: ['nextcloud', 'connection'],
+    queryFn: () => nextcloudApi.getConversations(),
+    refetchInterval: chatPanelOpen ? 30000 : 120000,
+    retry: false,
+  });
+
+  const isConnected = connData?.connected ?? false;
+
   const { data } = useQuery({
     queryKey: ['nextcloud', 'rooms'],
     queryFn: () => nextcloudApi.getRooms(),
     refetchInterval: chatPanelOpen ? 30000 : 120000,
-    enabled: true,
+    enabled: isConnected,
   });
 
   const rooms = data?.rooms ?? [];

frontend/src/contexts/NotificationContext.tsx

@@ -21,7 +21,7 @@ interface NotificationProviderProps {
 }
 
 export const NotificationProvider: React.FC<NotificationProviderProps> = ({ children }) => {
-  const [notifications, setNotifications] = useState<Notification[]>([]);
+  const [_notifications, setNotifications] = useState<Notification[]>([]);
   const [currentNotification, setCurrentNotification] = useState<Notification | null>(null);
 
   const addNotification = useCallback((message: string, severity: AlertColor) => {