Connecting an assistant and making a share link ask for a sign-in or
re-proof within five minutes. The shared jar is signed in once in global
setup, so the specs passed early in a run and failed later. They now start
from a session of their own signed in ten minutes ago: the consent page
withholds Allow and links to the confirm page, where the password re-proof
returns to the consent request; the share form opens the re-proof dialog
and creates the link after the password is given.
