This is cool, and it's great to see you work on this (and thanks for open sourcing!)

One more bit of prior art that might be interesting to you: I worked on the Mozilla Bespin project a long time ago with Joe Walker. Joe was also really big on the command line idea for much the same reason and created [GCLI](https://github.com/joewalker/gcli/blob/master/docs/index.md).

GCLI ultimately landed in Firefox Developer Tools, but I don't think it's in the current shipping version. Funnily enough, I just found a video on YouTube of me demoing the command line in Firefox Dev Tools: https://www.youtube.com/watch?v=YwOwJ1_JaKE

The state of the art in web UIs has definitely moved forward, and I'm really happy to see more experimentation with graphical command lines.