Implement cache invalidation improvements

src/lib/queryInvalidation.ts

@@ -324,5 +324,14 @@ export function useQueryInvalidation() {
         queryKey: queryKeys.entities.name(entityType, entityId) 
       });
     },
+    
+    /**
+     * Invalidate user profile cache
+     */
+    invalidateUserProfile: (userId: string) => {
+      queryClient.invalidateQueries({ 
+        queryKey: ['profiles', userId] 
+      });
+    },
   };
 }