https://www.christophlabacher.com/notes/building-a-design-system-workbench
A design system that directly uses your filesystem. Wherever the folder you drop the binary in will be your design system folder.
The backend is made in Go and the frontend uses React.
This is the kind of architecture that can work for anything. For example, you have a binary that list all the pictures in the current folder: it then becomes a Moodboard.
Or datasette on top of your browsing history.
If you have a nice API on top of it, it becomes easier to build a frontend/GUI.