How I wrote JustHTML using coding agents - Friendly Bit

I recently released JustHTML, a python-based HTML5 parser. It passes 100% of the html5lib test suite, has zero dependencies, and includes a CSS selector query API. Writing it taught me a lot about how to work with coding agents effectively. I thought I knew HTML going into this project, but it turns out I know nothing when it comes to parsing broken HTML5 code. That's the majority of the algorithm