This looks really good. I like the compilation to a single binary. I'm already using Htmx with Flask for routing/templating. File based routing with a page as the unit of functionality sit well with me.

The use of caret to denote Go code is quite clean, but given well formed HTML, could the parser detect anything not inside HTML tags as Go code and thus remove the need for a caret outside of HTML.

I will be trying this out. Thanks for this project.