It doesn't help that this was posted to HN with the "Usages" section of the README left blank. That alone would probably have addressed your question. The submission is just a little prematue.

Beyond that, while it does seem like its primarily vision is for speech-to-speech interfaces, it could easily be stretched to do things like send a templatized text prompt that was constructed based on toggle states, sensor readings, etc and (optimistically) asking for a structured response that could control lights or servos or whatever.

Generally, this looks like a very early stage in a hobby project (the code practices fall short of my expectations for good embedded work, being presented as a library would be better than as an application, the README needs lots of work, etc), but something more sophisticated isn't too far out of reach.