There is a small ui at the top right. Maybe needs to be bigger but it shows energy and hunger. I was trying to keep the editor as clean as possible to make it feel like your standard text editor and the ui kind took away from that. The "contract current" command will show you a list of all your current contracts. Technically, you can scroll, but it also scrolls the entire webpage, so you can use the arrow keys instead. The console does have a backspace feature.
Glad you enjoyed it.