Add room create progress debug headers

src/main/kotlin/com/android/trisolarisserver/controller/Rooms.kt

@@ -173,6 +173,7 @@ class Rooms(
         if (debugAuth == "1") {
             response.setHeader("X-Principal-Present", (principal != null).toString())
             response.setHeader("X-Principal-Id", principal?.userId?.toString() ?: "none")
+            response.setHeader("X-Room-Create-Step", "start")
         }
         requirePrincipal(principal)
         try {
@@ -184,6 +185,9 @@ class Rooms(
             }
             throw ex
         }
+        if (debugAuth == "1") {
+            response.setHeader("X-Room-Create-Step", "member_ok")
+        }
 
         if (roomRepo.existsByPropertyIdAndRoomNumber(propertyId, request.roomNumber)) {
             throw ResponseStatusException(HttpStatus.CONFLICT, "Room number already exists for property")
@@ -206,6 +210,9 @@ class Rooms(
         )
 
         val saved = roomRepo.save(room).toRoomResponse()
+        if (debugAuth == "1") {
+            response.setHeader("X-Room-Create-Step", "saved")
+        }
         roomBoardEvents.emit(propertyId)
         return saved
     }