refactor: drop edit-mode room assignment code

src/Form/Service/ParticipantFieldOptionsProvider.php

@@ -8,7 +8,6 @@ use App\BusProNet\Constants;
 use App\BusProNet\Model\Booking;
 use App\BusProNet\Model\Insurance;
 use App\BusProNet\Model\Pickup;
-use App\BusProNet\Model\Room;
 use App\BusProNet\Model\Service;
 use App\BusProNet\Utility\DirectionMapper;
 use App\Form\Model\BookingDto;
@@ -86,21 +85,18 @@ class ParticipantFieldOptionsProvider extends AbstractFieldOptionsProvider
      */
     protected function registerFieldOptionProviders(): void
     {
-        // Room assignment field provider (available for both create and edit workflows)
+        // Room assignment field provider (create only: edit mode renders the room as static text)
         // Returns empty array when no room choices available
         $this->fieldOptionProviders['assignedRoomId'] = function (BookingDto $bookingDto, int $participantIndex, array $options = []): array {
             $choices = [];
 
             if (BookingDto::MODE_CREATE === $bookingDto->getMode()) {
-                // Create context: use selected rooms from step 1, filtered by participant age
+                // Use selected rooms from step 1, filtered by participant age
                 $choices = $this->filterRoomsByParticipantAge(
                     $bookingDto->getSelectedRooms(),
                     $bookingDto,
                     $participantIndex
                 );
-            } elseif (BookingDto::MODE_EDIT === $bookingDto->getMode()) {
-                // Edit context: convert booked rooms to RoomSelectionDto for consistent handling
-                $choices = $this->convertBookedRoomsToSelectionDtos($bookingDto->booking->rooms);
             }
 
             if (true === empty($choices)) {
@@ -782,31 +778,6 @@ class ParticipantFieldOptionsProvider extends AbstractFieldOptionsProvider
         });
     }
 
-    /**
-     * Converts booked Room objects to RoomSelectionDto for consistent form handling.
-     *
-     * In edit mode, we need to convert Room entities to RoomSelectionDto objects
-     * so the form can use the same choice_value and choice_label configuration
-     * as create mode, enabling consistent price display in the template.
-     *
-     * @param Room[] $bookedRooms Rooms from existing booking
-     *
-     * @return RoomSelectionDto[] Array of room selection DTOs
-     */
-    private function convertBookedRoomsToSelectionDtos(array $bookedRooms): array
-    {
-        $selections = [];
-        foreach ($bookedRooms as $room) {
-            $selection = new RoomSelectionDto();
-            $selection->id = $room->id;
-            $selection->label = $room->label;
-            $selection->price = $room->price;
-            $selections[] = $selection;
-        }
-
-        return $selections;
-    }
-
     /**
      * Filters rental services by selected skipass duration.
      *