Function record_place_order_request 

pub fn record_place_order_request(order_id: &str, trd_env: i32, market: i32)

Attach successful Trd_PlaceOrder user data to the current API request. Calls outside with_api_request are intentionally no-op.

Ref: APIServer_Trd_PlaceOrder.cpp:864-873 serializes trdEnv, trdMarket, and backend order.szOrderID into ReqReply_SetUserData.