feat: add department dashboard

frontend/src/auth/PublicRoute.tsx

@@ -0,0 +1,7 @@
+import {Navigate, Outlet} from "react-router-dom";
+import {useAuth} from "@/context/AuthContext";
+
+export default function PublicRoute() {
+	const {token} = useAuth();
+	return token ? <Navigate to="/dashboard" replace /> : <Outlet />;
+}