This page simulates a client site. The chat bubble in the bottom-right corner is the OneSIM widget. On a real site, this script is injected with a single line (see the loader snippet below).
Inject on any website (DevTools → Console):
var s=document.createElement('script');s.src='YOUR_HOST/loader.js';document.body.appendChild(s);
The conversation is driven by the OneSIM API; reloading the page restores the chat from the server.