Chris on Nostr: If someone has a secret offline, and they wanted to preserve it in arca, how do they ...

If someone has a secret offline, and they wanted to preserve it in arca, how do they get it to an arca box without it ever existing in plain text on an internet connected device? How do they get it back to an air-gapped screen later? Would the transfer be to/from a Coldcard Q via something similar to the existing key teleport feature?