Early on in claude, I feel like it installed some terminal thing that allowed me to do Shift+Enter directly in the prompt, but I don't remember if that was CC t

Early on in claude, I feel like it installed some terminal thing that allowed me to do Shift+Enter directly in the prompt, but I don't remember if that was CC that did it. So I've been able to shift enter. I'm using iTerm2 and zsh with CC (if that's relevant)