fix: adapt changes in create mode for edit mode, cleanup

src/Controller/Booking/Edit/IndexController.php

@@ -15,6 +15,7 @@ use App\Entity\User;
 use App\Form\BookingEditType;
 use App\Form\BookingParticipantType;
 use App\Form\Model\BookingDto;
+use App\Form\Model\ParticipantEditDto;
 use App\Form\Service\ParticipantFieldHandlerRegistry;
 use App\Htmx\HxTrait;
 use App\Security\Crypt;
@@ -244,10 +245,15 @@ class IndexController extends AbstractController
             return $this->redirectToRoute('app_booking_edit', ['id' => $id]);
         }
 
+        // Create wrapper DTO for email uniqueness validation
+        $wrapper = new ParticipantEditDto(
+            participant: $participant,
+            bookingContext: $bookingDto,
+        );
+
         // Create form for participant with booking context
-        $form = $this->createForm(BookingParticipantType::class, $participant, [
+        $form = $this->createForm(BookingParticipantType::class, $wrapper, [
             'booking_context' => $bookingDto,
-            'edit_mode' => true,
             'validation_groups' => ['booking_edit'],
         ]);
 
@@ -327,10 +333,15 @@ class IndexController extends AbstractController
             ? $this->travelDataService->getMutabilityData($bookingData->dateId)
             : null;
 
+        // Create wrapper DTO for form
+        $wrapper = new ParticipantEditDto(
+            participant: $bookingDto->participants[$index],
+            bookingContext: $bookingDto,
+        );
+
         // Create form with validation disabled
-        $form = $this->createForm(BookingParticipantType::class, $bookingDto->participants[$index], [
+        $form = $this->createForm(BookingParticipantType::class, $wrapper, [
             'booking_context' => $bookingDto,
-            'edit_mode' => true,
             'validation_groups' => false,
         ]);