I have to mention that my computer is also running Linux, more precisely MX Linux. And yes, I know that Steam Cloud does exist. My concern is with games that do not support it (or not for certain things, maybe). Would manually moving games from my PC to the deck work? Maybe through mounting the Steam folder on the deck as a network drive or some sort?
That looks like a nice, useful tool, thanks for sharing! Could it be used in practice to transfer large amounts of data remotely between people, if they just setup a shared folder, or is it just meant for small files or LAN? Big file transfer is always an issue when you need it…