直播：画质可选、只读 /live/info、弹幕 WS 透传；Nginx 弹幕路径

Made-with: Cursor

server/pkg/weblive/hub.go

@@ -77,7 +77,9 @@ type Hub struct {
 
 	publishConn *websocket.Conn
 	pubPC       *webrtc.PeerConnection
-	forwarders  []*trackForwarder
+	// 开播 WebSocket 上 quality= 参数，供 GET /live/info 只读输出
+	publishQuality string
+	forwarders     []*trackForwarder
 
 	viewers map[string]*viewerSession
 }
@@ -128,6 +130,7 @@ func (h *Hub) clearPublisher() {
 		h.pubPC = nil
 	}
 	h.publishConn = nil
+	h.publishQuality = ""
 }
 
 func (h *Hub) removeViewer(id string) {