Feat: Allow # memorize async while processing

Currently, If I # Remember this!, I can't press enter until there's a break. When running through a big chain of events, there is hardly ever a break - and I have this typed up, I have to either ESC to break (which loses my input and have to type it again), wait until it's done, or interrupt a human-in-the-loop break, where I'd then need to ask it to continue after.

tldr: It's not intuitive - and it's tedious.

Simple allow me to queue up info like when I leave out #. I can send messages async to queue it up, why not with #, too?