Third-party embed test host. The widget loads from one script tag with no
attributes; the dealership is resolved server-side from this page's
Origin header. With the shadow-DOM mount, the contact form
renders inline into the placeholder div this page provides below.
https://retailing.space-auto.com/embed.js (dev)The div below is provided by this page (the integrator); the widget discovers it by id and mounts the general contact form into it.