Is there a way for a hook to show something in T3 Code itself? A toast would be perfect.

[gogyzzz]

I have a Stop hook that kicks off work in the background and finishes long after the hook
exits, so I want it to tell me when it's done. Right now I shell out to osascript for a
macOS notification.

It works, but it's outside the app, it knows nothing about the thread
it came from, and it's mac-only.

Closest I found is #7586, but that's about T3 deciding when to make a sound. Mine is just whether a hook can hand a message to the app.