I wonder what the smallest, still practical, application of this would be now if you could implement it locally on your machine assuming you have decent hardware.

Maybe something with the file system? Like hover over any file and instead of seeing a snapshot or some details/metadata you could get a quick 1-2 line sentence on what it is. I suppose you may want to have that saved somewhere as well to cache it... but I'm def not an expert.

This would solve the always difficult issue of finding that one document! I still have trouble with document search on both mac & windows OS sometimes.