

Hah, no worries. I think it’s just an unusual use case and… well, I recognized it because I’m obsessed with PiKVM lately and those things!
I’m not superknowledgeable on USB, but Linux has features to do this; they are called “gadgets” in this list:
https://docs.kernel.org/usb/index.html
I have used this to turn a RPI Zero into a virtual USB drive with these scripts: https://github.com/alexpdp7/rpi-zero-usb-iso/
Likely by searching the Internet for USB gadgets you might find good explanations about requirements. I know there are unexpected difficulties- I’m using a Pi Zero instead of a nicer Pi because… nicer Pis can draw too much power over USB and bork what they’re connected to. So be careful.

WebTorrent Desktop is a bit abandoned, but last time I tried it, it still worked despite some warts (I think it wouldn’t work with newer Chromecasts).
My notes also have: