TODO

Up / Down for history - perhaps using the in-memory cards that already exist
Sidebar navigation
In-app documentation (maybe via sidebar?)
Non-interactive externals should require a keypress before the window closes
Save/restore session
configuration so we can change the table like border: 2px solid green and change alignment like center or left
would love to have some drag-n-drop gui widgets, maybe from the sidebar navigation
hook up more ansi colors - may have to look into nushell's is_tty function that strips ansi and make it work for nana
have the input and output areas distinguishable by background color
please give me dark mode

Brainstorming

maybe add a green checkmark that also commits/executes a command
yes, i want an easter egg - i have one in mind :) it's a secret but it goes with the theme