feat: implement hx-boost for reliable loading indication

src/Controller/Booking/Create/Step1Controller.php

@@ -55,12 +55,6 @@ class Step1Controller extends AbstractController
         }
 
         $form = $this->createForm(BookingCreateStep1Type::class, $bookingCreateDto, [
-            'attr' => [
-                'hx-post' => $this->generateUrl('app_booking_create_step_1'),
-                'hx-target' => '#form-wrapper',
-                'hx-select' => '#form-wrapper',
-                'hx-swap' => 'outerHTML',
-            ],
             'validation_groups' => ['booking_create_step_1'],
         ]);
 
@@ -80,7 +74,7 @@ class Step1Controller extends AbstractController
             // Clear baseline snapshot when moving to step 2
             $this->bookingService->clearBaselineSnapshot($request);
 
-            return $this->hxRedirect($request, $this->generateUrl('app_booking_create_step_2'));
+            return $this->redirectToRoute('app_booking_create_step_2');
         }
 
         // Get complete summary data (pricing, rooms, CMS data)