reference/architecture diagrams on a real world deployment for publication discovery

[andorsk]

https://identity.foundation/trust-establishment/#publication-discovery points to how to discover Trust Establishment documents but I think leaves a lot of open questions about how this would actually work.

I think it would be really helpful to ground this a little more in a real world deployment/network architecture with some use cases. There's a lot of questions I have around how publication discovery would work in practice, and it would be helpful for the specifications to dive into more details. I'm assuming if I'm having issues conceptualizing an implementation, others would benefit from as well.

A non-normative example is fine I think.