feat: centralize create/edit flow contexts, extract edit submit service

src/Controller/Booking/Traits/BookingCreateTrait.php

@@ -48,23 +48,6 @@ trait BookingCreateTrait
         return $this->redirectToRoute($route);
     }
 
-    /**
-     * Prepares template variables for the booking summary sidebar.
-     *
-     * @return array<string, mixed> Array containing all variables needed for the summary partial
-     */
-    private function getSummaryVariables(BookingDto $bookingCreateDto): array
-    {
-        $summary = $this->summaryDataService->getSummaryData($bookingCreateDto);
-
-        return [
-            'participantsCount' => $summary->participantCount,
-            'pricingData' => $summary->pricingData,
-            'assignmentCounts' => $summary->assignmentCounts,
-            'groupedSelectedRooms' => $summary->groupedSelectedRooms,
-        ];
-    }
-
     /**
      * Handles API errors by logging and adding a flash message.
      */