wip: modernized edit flow

src/Form/Model/ParticipantDto.php

@@ -11,6 +11,7 @@ use App\Validator\Constraints as AppAssert;
 use Symfony\Component\Validator\Constraints as Assert;
 
 #[AppAssert\Participant(groups: ['booking_edit', 'booking_create_step_2'])]
+#[AppAssert\ApplicantAddress(groups: ['booking_create_step_2'])]
 class ParticipantDto
 {
     /**
@@ -132,6 +133,12 @@ class ParticipantDto
         $instance->weight = $personalData->weight;
         $instance->shoeSize = $personalData->shoeSize;
 
+        // Clone address to prevent shared object references that could cause mutations
+        $instance->address = null !== $personalData->address ? clone $personalData->address : null;
+
+        $instance->remarksRoom = $personalData->remarksRoom;
+        $instance->licensePlate = $personalData->licensePlate;
+
         return $instance;
     }