:sig
bool ws_send(String message, bool binary = false, String scope = "")

:params
message : message payload to send
binary : set to true to send a binary frame instead of a text frame
scope : optional scope identifier, defaults to the current WebSocket page scope
return value : true if the message was queued for at least one connected client

:see
>websocket

:content
Queues a WebSocket message for every client connected to the given scope.

If `scope` is omitted, the current page scope is used.

:example
// Inside a WS handler this broadcasts to the current scope.
bool sent = ws_send("hello subscribers");
print(sent ? "broadcast queued" : "no active WS scope to broadcast to", "\n");