feat: refactoring and cleanup

src/Controller/Booking/Traits/BookingCreateTrait.php

@@ -69,7 +69,7 @@ trait BookingCreateTrait
     {
         $participantsCount = $this->getParticipantsCount($bookingCreateDto);
         $summary = $this->bookingService->getRoomSummaryAndParticipantCount($bookingCreateDto);
-        $roomAssignmentCounts = $this->bookingService->getRoomAssignmentCounts($bookingCreateDto);
+        $roomAssignmentCounts = $bookingCreateDto->getRoomAssignmentCounts();
         $availableRooms = $bookingCreateDto->travel->getAvailableRooms();
         $groupedSelectedRooms = $this->bookingService->groupRoomSelectionsByType($bookingCreateDto->getSelectedRooms(), $availableRooms);
 

src/Controller/Booking/Traits/ParticipantCardFlowTrait.php

@@ -142,8 +142,6 @@ trait ParticipantCardFlowTrait
                 'participantIndex' => $index,
                 'bookingDto' => $bookingDto,
                 'summaryData' => $summaryData,
-                'pricingData' => $summaryData['pricingData'],
-                'cmsData' => $summaryData['cmsData'],
                 'refreshRouteName' => $refreshRouteName,
                 'submitRouteName' => $submitRouteName,
             ]
@@ -159,6 +157,21 @@ trait ParticipantCardFlowTrait
         return $response;
     }
 
+    /**
+     * Converts collected notifications to flash messages.
+     *
+     * Used when redirecting after form submission, as HTMX-triggered toasts
+     * are destroyed on redirect. Flash messages persist across the redirect.
+     *
+     * @param array<array{type: string, message: string}> $notifications The notifications to convert
+     */
+    private function addNotificationsAsFlashMessages(array $notifications): void
+    {
+        foreach ($notifications as $notification) {
+            $this->addFlash($notification['type'], $notification['message']);
+        }
+    }
+
     /**
      * Required services - implementing controllers must inject these.
      *
@@ -170,4 +183,6 @@ trait ParticipantCardFlowTrait
     abstract private function createForm(string $type, $data = null, array $options = []): FormInterface;
 
     abstract private function render(string $view, array $parameters = [], ?Response $response = null): Response;
+
+    abstract protected function addFlash(string $type, mixed $message): void;
 }