This is an absurdly simple Unix domain socket server for Vosk. Connect to its socket, and then give input like so:

{"c":"vosk","wav":"base64 signed 16-bit mono waveform data","sr":sample rate}

It will respond like so:

{"result":[vosk result]}

ennuicastr-vosk-daemon.sh is designed to install all dependencies automatically, so all you need to do to run the service is run that.