Work have started trying out signal for messaging, but I’d rather not have all my personal contacts and conversations on a machine I don’t own
Is there any way I could white/black list certain contacts from one device, or is the only way to manage two separate accounts? (If so, is there an easy/built in way to do that on windows/nixos)
I think you might be able to do this with two contacts apps.
For example simple contacts lets you have contacts that are local to the app. You could store all of the private contacts in simple contacts and the in your default contacts app hace only the ones you want signal (and other apps) to see.
Edit: I think I misunderstood you. If I understand correctly now, you want on your phone to have all contacts but on your work laptop only some contacts?
I am not aware of any way to do this, sorry.