rust-lang/book ? reverse-engineered prompt

Build me a clean, readable website for The Rust Programming Language book from this repository.

I want it to feel like the official Rust book, with the chapters laid out nicely, code examples shown clearly, and the whole thing easy to browse in a browser. Please make sure it can be built locally with the usual book build command, and that the code listings and tests still work. If anything needs current docs or a quick check online, go ahead and look it up.

Also make sure the result is polished enough for readers, with a simple table of contents, good navigation, and no broken links or formatting issues.