This. I was just looking for the exactly the same thing. For now I use tmux with tmux-ressurect to persist state between reboots. - It works okeyish, I would say it's a good hack but still a hack. It's sad there isn't really solution for this problem maybe aside for warp. My little UX dream is to have such a solution of saveing workspaces integrated with whole OS and apps inside it. - That would be cool.