Fix login redirect: push router immediately and skip SWR revalidation

After login, explicitly navigate to destination instead of relying
on useEffect. Also skip SWR revalidation to prevent a race where the
re-fetch overrides the mutated user data.

Made-with: Cursor

src/pages/login.tsx

@@ -82,7 +82,8 @@ export default function Login({ destination = "/" }: { destination?: string }) {
 				toast.success("You have been logged in!", {
 					toastId: "login-successful",
 				});
-				mutateUser(response.data);
+				mutateUser(response.data, { revalidate: false });
+				router.push(destination);
 			})
 			.catch((e) => {
 				if (e.response.status === 401) {