Refactor AdminPage and remove AdminPanel component: Simplify admin navigation by redirecting to preferences page and eliminating the AdminPanel component, streamlining the admin interface.

components/admin/HouseManagement.tsx

@@ -71,9 +71,13 @@ const getRoleColor = (role: string) => {
   }
 };
 
-export default function HouseManagement() {
-  const [houses, setHouses] = useState<House[]>([]);
-  const [loading, setLoading] = useState(true);
+interface HouseManagementProps {
+  initialHouses: House[];
+}
+
+export default function HouseManagement({ initialHouses }: HouseManagementProps) {
+  const [houses, setHouses] = useState<House[]>(initialHouses);
+  const [loading, setLoading] = useState(false);
   const [editingHouse, setEditingHouse] = useState<House | null>(null);
   const [saving, setSaving] = useState(false);
   const [deletingHouseId, setDeletingHouseId] = useState<string | null>(null);
@@ -85,10 +89,6 @@ export default function HouseManagement() {
   });
   const [, startTransition] = useTransition();
 
-  useEffect(() => {
-    fetchHouses();
-  }, []);
-
   const fetchHouses = async () => {
     try {
       const response = await fetch("/api/admin/houses");
@@ -98,8 +98,6 @@ export default function HouseManagement() {
       }
     } catch (error) {
       console.error("Error fetching houses:", error);
-    } finally {
-      setLoading(false);
     }
   };