I figure @carlton might appreciate this if he hasn't seen it already.
@wagtail co-founder Tom Dyson has a sample repo for putting all the wagtail docs in a LLM chat session (with the docs in the context window) and say:
"using only the provided documentation, how do I do x in Wagtail?”
https://github.com/tomdyson/wagtail-prompt/
Mainly works with Google Gemini because the context window is large enough for all the docs.