I’m not sure if they originated this pattern but I like how Claude Code introduces new features with tips.

✻ Whirring… (esc to interrupt · thinking)
  ⎿ Tip: Start with 'btw' to ask a quick side question
    without interrupting Claude's current work

I tried this one out and it didn’t feel better than opening another claude. It seems to have the existing conversation context, which is helpful, but the question doesn’t seem to be enqueued immediately and waits for the previous prompt to complete, so I don’t love that. My ideal behavior would be to fork the conversation and run the btw prompt in parallel.

Someone told me amp has threads and maybe those do that.