fix: show booked room count in edit summary

src/Service/RoomPricingCalculator.php

@@ -147,12 +147,8 @@ class RoomPricingCalculator
             }
         }
 
-        // Count current participant assignments from the DTO (reflects live state
-        // including new assignments not yet in the booking entity)
-        $assignmentCounts = $bookingDto->getRoomAssignmentCounts();
-
         // Build pricing array
-        foreach ($roomGroups as $roomId => $data) {
+        foreach ($roomGroups as $data) {
             $room = $data['room'];
             $participantCount = $data['participantCount'];
             $totalPrice = $data['totalPrice'];
@@ -160,14 +156,11 @@ class RoomPricingCalculator
             // Calculate average unit price (price per person)
             $unitPrice = $participantCount > 0 ? $totalPrice / $participantCount : 0.0;
 
-            // Use live assignment count for quantity display so the sidebar reflects
-            // new room assignments that haven't been persisted to the booking entity yet
-            $quantity = $assignmentCounts[$roomId] ?? $room->totalCount;
-
             $roomPricing[] = [
                 'roomId' => $room->id,
                 'label' => $room->label,
-                'quantity' => $quantity,
+                // Rooms, not occupants: room assignments cannot change in edit mode
+                'quantity' => $room->totalCount,
                 'participantCount' => $participantCount,
                 'unitPrice' => $unitPrice,
                 'totalPrice' => $totalPrice,