I built something similar recently [0] with help from Claude Code (in Zed). It is still only a rough prototype, but I have tried it out on non-techy people for a project, and it has worked better than anything I have tried prior (Wordpress, Hugo etc).

I mount the folder with the content so they always has easy access to add and modify the website directly from the file explorer. It is quite powerful because there is not friction. You hit save, and it is live. This can off course be a drawback too, it is quicker to mess up stuff, but that is a trade off I am willing to make in 95% of the use cases I deal with.

[0] https://forge.dmz.skyfritt.net/ruben/folderweb