Things are looking good, and I think we're in the clear to merge after your review.
One remaining issue: the chapter and TOC numbering isn't right. It's setting everything to 0.x. I think this could be a TeX version thing, since apparently this was problem was fixed with some yaml that I've already incorporated. Perhaps try rendering on your machines and see if the result is the same? I'm using full blown / bloated TeX install; if one of you has tinytex as your primary that might work better.
Things are looking good, and I think we're in the clear to merge after your review.
One remaining issue: the chapter and TOC numbering isn't right. It's setting everything to 0.x. I think this could be a TeX version thing, since apparently this was problem was fixed with some yaml that I've already incorporated. Perhaps try rendering on your machines and see if the result is the same? I'm using full blown / bloated TeX install; if one of you has tinytex as your primary that might work better.
https://community.rstudio.com/t/chapter-starts-with-0-1-not-1-0-in-pdf-book-format/12797