docs: http-lp forwarding goes over the agent's WebSocket, by long polls only without one - said so in the panel, the code and the README

internal/server/hub.go

@@ -7,8 +7,9 @@ import (
 	"github.com/x-grk/longpolling-remote-access/internal/proto"
 )
 
-// Hub is the in-memory broker between agents (HTTP long-polling) and the panel.
-// It carries three kinds of work to an agent through its single control poll:
+// Hub is the in-memory broker between agents (on a WebSocket, or by HTTP
+// long polls) and the panel. It carries three kinds of work to an agent
+// through its single control channel:
 // terminal sessions, port-forward streams, and one-shot tasks (file manager).
 // Nothing here is persisted.
 type Hub struct {