I don't. I gave up.

In my 20+ years nobody has ever maintained the docs and we all somehow made it.

Businesses and careers don't rise and fall based on whether or not a readme file is up to date.

Also, in the age of AI producing an explainer takes minutes. I've delivered full reports on how a system feature everyone forgot about works in about 15 minutes.

Before LLMs it would have taken me weeks to produce the same document.