Cool project, though - don't mean to take away anything from it.
Most projects prefer to have a separate database, server side rendering and often even multiple layers of compilers too.
A lot of projects even require hundreds of megabytes of language runtime in addition to the browser stack.
So a single HTML file is still unusual even if it’s something nearly any web app could technically do if they wished.
And for this reason alone, I think it’s unreasonable to have expectations of a JavaScript-less, CSS-less code-golfed HTML file. This isn’t sold as a product of the demo scene (that’s another expectation entirely). This is sold as a practical self-hosting alternative for people who need a kanban quickly and painlessly. Your comment even proves that it works exactly as that kind of solution. So having inlined JS is a feature I’d expect from this rather than complain about.