Ha, I just learned that deleting text in my zsh with Ctrl+U to the front or Ctrl+K to the end puts it in a buffer that can be pasted by pressing Ctrl+Y! That’s neat. Even removing the last word with Ctrl+W moves it into this paste buffer.
https://jvns.ca/blog/2024/11/26/terminal-rules/#rule-5-vaguely-support-readline-keybindings
I guess I have to implement pasting in tt as well.