following #18095

We maintain the SGLang document with these disciplines:

1. Organized, making the document logical;
2. Concise, let users/learners/developers easily get different levels of documents; => we need to have a quick start, user's detailed usage document; Learning Material; and developer guidance.

In this sense, I am planning for a detailed document refactor forthe SGLang diffusion document.

https://docs.sglang.io/diffusion/index.html

Feel free to share your plans and make PRs to this. Needs to be careful and responsible, but also, the process is instructive.