[9question1]

These days isn't the solution to this just "ask <insert LLM of choice here>" to read the code and write the documentation"?

[koakuma-chan]

Yes, you can have Claude Code go through the code and make an .md file with documentation for all the public APIs. I do that for everything that doesn't provide llms.txt.

[bigstrat2003]

If you want to not reliably know anything about the code, sure. But if you want to have useful knowledge, using a stochastically unreliable tool isn't going to cut it.