fix: reconcile assigned family insurance rate on updated participant

src/Controller/Booking/Create/Step3Controller.php

@@ -19,6 +19,7 @@ use App\Service\BookingCreateContextFactory;
 use App\Service\BookingPriceCalculator;
 use App\Service\BookingPriceMismatchAnalyzer;
 use App\Service\BookingSessionManager;
+use App\Service\ParticipantFormSupport;
 use App\Service\RoomPricingCalculator;
 use Psr\Log\LoggerInterface;
 use Symfony\Component\Form\FormInterface;
@@ -40,6 +41,7 @@ class Step3Controller extends AbstractBookingCreateController
         private readonly BookingPriceCalculator $priceCalculator,
         private readonly BookingPriceMismatchAnalyzer $priceMismatchDiagnostics,
         private readonly ApiClient $apiClient,
+        private readonly ParticipantFormSupport $participantFormSupportService,
         private readonly LoggerInterface $logger,
     ) {
     }
@@ -76,6 +78,12 @@ class Step3Controller extends AbstractBookingCreateController
                 // Validate booking data with API by submitting an inquiry booking
                 $inquiryResponse = $this->apiClient->createBookingInquiry($bookingCreateDto);
 
+                // Surface any insurance corrections made during payload building (e.g. a
+                // stale price tier reassigned/cleared right before submission)
+                foreach ($this->participantFormSupportService->collectAndClearNotifications($bookingCreateDto) as $notification) {
+                    $this->addFlash($notification['type'], $notification['message']);
+                }
+
                 if ($inquiryResponse instanceof Notification) {
                     $this->handleApiError(
                         $this->logger,