Hello people, after days testing different CMS's I found a solution that is working really well!
I'm using Decap CMS to serve JSON files. the build script is just a simple node file that generates the collections.
The coolest part is that Webstudio + Decap CMS it's a zero-cost stack, with a no-code editor for your client and with a CMS to manage it.
https://github.com/walmello/minimal-decap-cmsFeel free to clone and improve it. π
I'm going to document it better as soon as possible.