https://github.com/haplo/pelican-copy-code — A Pelican [1] plugin to add a Copy button to all source code blocks. It happens at build time, so no DOM manipulation at page load time.
I'm currently writing a series of blog posts about these that I call Vibe-coding Escapades [3]. I will also write about bugs and technical problems that AI helps me debug and solve, some are non-trivial and have been pestering me for years.