ProfileCard shows someone at a glance; ProfileEditor edits a profile
seeded by its owner and saves once it changed, has a name and an email
that reads, with a way to put it back. AccountSwitcher and
WorkspaceSwitcher show the one in use in a row that opens a menu of the
others and a way to add one; UserMenu opens from an avatar with who is
signed in, the owner's rows and Sign out, through the new
menus::menu_under. SessionList puts this device first, signs others
out one by one or all after a second press. ApiKeyManager lists keys by
their ends, makes one by name and shows its secret once.
ZacharyZhang-NY