I couldn't open the chapter, but in case anyone else is trying to make a nicely formatted ebook, take a look at EPublish: https://frequal.com/epublish/
It's a software-engineer-friendly tool for converting HTML to EPUB. It handles all the annoying little details. Binaries coming later today.
This bothered me so much that in my tool for HTML-native authors, EPublish ( https://frequal.com/epublish/ ), I automatically insert a no-AI-training clause on the copyright page. Not that it will stop the kind of executives who will authorize mass unauthorized downloading of books to train their LLMs, but we have to at least take a stand.
You're the second person to recommend Obsidian to me in a week, I'll take a look. For long-form writing, I'm very comfortable with my setup from article (html-helper-mode especially), but for notes I'll look at Obsidian.
Nice post! Short and simple to read. Is epublish on GitHub or somewhere? It looks simpler than previous approaches I've seen.
I had the chance to help a bit with one of the AOSA books. It was a very powerful pipeline, but also quite complex to manage. IIRC it used pandoc (and a lot other tools).
So having a simpler alternative like epublish would be interesting if I have to work on another book in the future.
EDIT: sorry, just went to the main thread, and saw there you replied to another user it's not open source "yet" (hooray)
Example book here: https://www.amazon.com/dp/B0GYCZJVGX