CascadeStudio

Yeah I've only dabbled with it myself. Again it was part of this process of me orienting myself towards "thinking in 3D" and I'm really grateful to much more 3D-literate developers than me that we have so many choices. CascadeStudio is another one: https://github.com/zalo/CascadeStudio This is a browser-based JS CAD thing built around an Emscripten cross-compilation of OpenCascade -- the fact that it works at all was revelatory to me about the capability of Emscripten, which had passed me by a little. So this is JS code-CAD in a bRep world.

If you haven't seen it you may want to check out https://github.com/zalo/CascadeStudio From what I see, it is exposing the OpenCascade base commands directly, versus your completely new DSL, but you might be interested in a way to implement your DSL on top of such an interface such as this which takes out a lot of the extra work of having a rendering interface, exports, etc, maybe.

It's nowhere near ready for primetime, but you should take a look at CascadeStudio (https://github.com/zalo/CascadeStudio)

You can even get an OpenCascade IDE running in your browser! https://github.com/zalo/CascadeStudio