- ws_hub.go 182(hub核心/常量/wsEvent/newHub/broadcast) + ws_hub_conn.go 165(连接层handleWS/read·writePump) + ws_hub_turn.go 168(relay/streamChat/runTurn/interrupt/broadcastStream) + ws_hub_origin.go 73(Origin校验) + ws_hub_message_event.go 30(message_edited/deleted广播) - 代码行多重集 identical + 顶层声明diff空; 每文件≤500/函数≤80(最大handleWS 28/streamChat 25) - gateway测试绿 + build/vet + win/darwin交叉编译绿