Amp CLI, a bit overzealous?
When you run amp CLI in a "non standard" terminal, like the ones that are available in Emacs, like eat the terminal behaves strangely.
But if I run amp in eat it displays like so:
bash-5.2$ amp
Type \ followed by Enter to insert newlines, or use Shift+Enter in supported terminals.
Interrupt the agent with Ctrl+C, exit with Ctrl+D.