fix: streamlined single room selection handling

src/Form/Service/CreateFieldStateProvider.php

@@ -262,9 +262,9 @@ class CreateFieldStateProvider extends AbstractFieldStateProvider
             'required' => new ApplicantCondition(),
         ];
 
-        // Hide assignedRoomId field when only one room type is selected (auto-assigned by RoomAssignmentService)
+        // Render assignedRoomId field as static text when only one room type is selected (auto-assigned by RoomAssignmentService)
         $this->fieldStateConditions['assignedRoomId'] = [
-            'hidden' => new SingleRoomTypeCondition(),
+            'static_text' => new SingleRoomTypeCondition(),
         ];
 
         // Example field state conditions would be registered here