fix: don't auto assign discounted transport to babies

src/Form/Service/ParticipantTransportationDiscountReplacementFieldHandler.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace App\Form\Service;
 
+use App\BusProNet\Constants;
 use App\BusProNet\Utility\DirectionMapper;
 use App\Form\Model\BookingDto;
 use App\Form\Service\Abstract\AbstractParticipantFieldHandler;
@@ -119,6 +120,12 @@ class ParticipantTransportationDiscountReplacementFieldHandler extends AbstractP
         // Step 4b: Handle non-BUS inbound scenario (restore discount if available)
         // Inbound is NOT BUS - try to restore discounted PKW if available
 
+        // Baby participants never get discounted transportation
+        $age = $participant->getAge($bookingDto->travel->dateFrom);
+        if (null !== $age && $age <= Constants::BABY_MAX_AGE) {
+            return;
+        }
+
         // Check if outbound is currently REGULAR PKW
         $outboundIsRegularPkw = DirectionMapper::isCar($participant->transportationOutbound->subType)
             && (null === $participant->transportationOutbound->price