fixed API and stopping delay

web/shared/ws.js

@@ -21,7 +21,15 @@ export function connectWs(onMessage, opts = {}) {
     }
     open();
     return {
-        send(msg) { if (ws?.readyState === WebSocket.OPEN) ws.send(JSON.stringify(msg)); },
+        // Returns true when the message was actually queued on a live socket,
+        // false when the socket is closing/reconnecting. Callers that need to
+        // surface a transport failure (transport buttons) inspect the result;
+        // fire-and-forget callers can ignore it.
+        send(msg) {
+            if (ws?.readyState !== WebSocket.OPEN) return false;
+            ws.send(JSON.stringify(msg));
+            return true;
+        },
         close() { closed = true; ws?.close(); },
         get readyState() { return ws?.readyState; }
     };