I’ve actually been pondering on a way to do basically the exact same thing. I just haven’t decided how I want to select which pages to be published. (I don’t want to publish everything) Do you have any thoughts on how you’d like that part to work?

I have tentative plans to do this with Astro, Caddy, and Nix. (My server runs NixOS so I want the entire setup to be declared using nix.)