fix: 完善直播结束通知与 WebSocket 连接

backend/internal/stream/server.go

@@ -172,7 +172,7 @@ func NewRTMPServer(rtmpPort string) *RTMPServer {
 						monitor.Warnf("Failed to mark room inactive room_id=%s: %v", roomID, err)
 					}
 				}
-				chat.MainHub.ClearRoomHistory(roomID)
+				chat.MainHub.NotifyStreamEnded(roomID)
 				monitor.Infof("Publishing ended for room_id=%s", roomID)
 			} else {
 				monitor.Infof("Variant publishing ended for room_id=%s path=%s", roomID, channelPath)