A hands-on tutorial for building a Lisp interpreter in Rust from scratch with zero dependencies

I've put together a hands-on tutorial for building a Lisp interpreter in Rust from scratch — 74 steps, zero dependencies, 42 tests passing. Full disclosure upfront: This tutorial was developed with the help of an AI coding assistant. I want to be upfront about that. What I did do: followed every step myself, ran cargo test after each change, debugged every compiler error, and verified all 42 tests pass. The code runs — you can clone it and try it right now. What the AI helped with: explaining...