Implement cache management

src/hooks/usePublicNovuSettings.ts

@@ -1,12 +1,13 @@
 import { useQuery } from '@tanstack/react-query';
 import { supabase } from '@/integrations/supabase/client';
+import { queryKeys } from '@/lib/queryKeys';
 
 /**
  * Hook to fetch public Novu settings accessible to all authenticated users
  */
 export function usePublicNovuSettings() {
   const { data: settings, isLoading, error } = useQuery({
-    queryKey: ['public-novu-settings'],
+    queryKey: queryKeys.settings.publicNovu(),
     queryFn: async () => {
       const { data, error } = await supabase
         .from('admin_settings')