I appreciate the amount of work and effort you've put in here.
I also maintain my own site which is statically generated and deploys to a VPS running docker via git pushes. I haven't written interactive articles yet, but having absolute freedom is imperative for me. I always end up fighting with whatever system I use, except here I can just extend it to do what I need.
I used Zola [0] + Caddy [1] with the http.git plugin [2] and docker. I generate the assets with Zola, then rsync them to a separate repository and Caddy automatically pulls in the changes whenever I git push.
I also maintain my own site which is statically generated and deploys to a VPS running docker via git pushes. I haven't written interactive articles yet, but having absolute freedom is imperative for me. I always end up fighting with whatever system I use, except here I can just extend it to do what I need.