Share a private artifact

A share link lets someone in without being on the list: make one from an artifact’s Share list (More ways in), give it a name and a role, and send it. It counts its own opens — and can email you when someone opens it — and Share links in the sidebar lists every link the workspace has made, so you can see which were opened. Its menu also copies an embed address, for placing the artifact inside another page as an iframe. Revoking a link stops the link and its embed at once.