Regarding a keyboard key for AI, we did it before, as a book mark launcher
It is so successful that it is not-googleable, and I had to ask ChatGPT what they were called and I still can only find a few references.
Somebody just make a chrome plugin that makes each key into a bookmark launcher already.
(we can use sequential combos, like c-h-a-t-.-o-p-e-n-a-i-.-c-o-m to launch a book mark)