tuhdo/os01 ? reverse-engineered prompt

I want to turn this repo into a clean, working website for the book, with the PDF easy to download and the chapters readable online. Please make sure the book source builds correctly from the TeX files, the pages look good, and the navigation feels simple for someone learning operating systems from scratch. If there are any broken links, missing assets, or build issues, fix them too. Keep the existing content and tone, but make the project feel polished and ready for people to browse, read, and download. If you need to check current docs or best practices for building the site, go ahead and look them up online.