feat: increase availability cache ttl and ensure fresh data when entering form

src/Controller/Booking/Edit/IndexController.php

@@ -169,6 +169,10 @@ class IndexController extends AbstractController
             return $this->redirectToRoute('app_booking_edit', ['id' => $id]);
         }
 
+        // Fetch fresh availabilities when entering participant form
+        // This ensures up-to-date data and populates cache for subsequent HTMX refreshes
+        $this->travelDataService->enrichWithFreshAvailabilities($bookingDto->travel, cached: false);
+
         // Create wrapper DTO for email uniqueness validation
         $wrapper = new ParticipantEditDto(
             participant: $participant,