screen gets you in via the USB-UART connection.
if you want to see the matron console (which is the lua portion) you can do this:
systemctl stop norns-matron
cd norns
build/matron/matron
now you can type commands into matron and see output from matron. there’s no readline in there so it’s very basic, but it works.
if you want to do side-by-side editing plus matron in one terminal you’re need to use tmux or similar.
also— if you’d like to dig in, @zebra originally wrote an ncurses maiden which ran on the command line. the web maiden “obsoleted” this, but i still think it’d be useful to revive: https://github.com/monome/norns/tree/master/maiden
i think it just needs IPC to be changed over to WS.