하드코딩 변수 관리

frontend/lib/features/auth/presentation/login_screen.dart

@@ -222,9 +222,10 @@ class _LoginScreenState extends ConsumerState<LoginScreen>
       }
 
       // 1. Init via Descope SDK
+      final frontendUrl = dotenv.env['FRONTEND_URL'] ?? 'http://ssologin.hmac.kr';
       final signUpOrInResponse = await Descope.enchantedLink.signUpOrIn(
         loginId: loginId,
-        redirectUrl: "http://ssologin.hmac.kr/auth/callback",
+        redirectUrl: "$frontendUrl/auth/callback",
       );
 
       if (mounted) {