This is something that would be very nice to support, and saving to just a local file and allowing users to use their own storage mechanisms is definitely an in

This is something that would be very nice to support, and saving to just a local file and allowing users to use their own storage mechanisms is definitely an intended use case. Right now it stores the entire vault encrypted on disk, but I would like to be able to store passkeys in a standard format (ideally supported by multiple managers) and then allow users to do whatever they want with them.