add auth, format

lib/features/cart/presentation/widgets/checkout_submit_button.dart

@@ -114,7 +114,8 @@ class CheckoutSubmitButton extends StatelessWidget {
       });
     } else {
       // Generate order ID (mock - replace with actual from backend)
-      final orderId = 'DH${DateTime.now().millisecondsSinceEpoch.toString().substring(7)}';
+      final orderId =
+          'DH${DateTime.now().millisecondsSinceEpoch.toString().substring(7)}';
 
       // Show order success message
       ScaffoldMessenger.of(context).showSnackBar(
@@ -130,10 +131,7 @@ class CheckoutSubmitButton extends StatelessWidget {
         if (context.mounted) {
           context.pushNamed(
             RouteNames.paymentQr,
-            queryParameters: {
-              'orderId': orderId,
-              'amount': total.toString(),
-            },
+            queryParameters: {'orderId': orderId, 'amount': total.toString()},
           );
         }
       });