The Shell provides a way for the user to Log out of their account, which ends their session and returns the system to the account login screen.
User wants to log out of system. This action is chosen from the User Menu.
Logging Out when no apps are running
Logging Out when 1 or more apps are running
No mockup - this screen would show a message with now 60s countdown, and list the running apps exactly as is done for System Stop and Restart.