Zen mode needs a "Signout" button

In order to cleanly sign out of Matomo when Zen mode is in effect, you need to revert to Menu mode before the “Signout” button becomes available.

This is inconvenient. Zen mode should have a method (i.e., a button) to let the user exit from Matomo directly. A keyboard shortcut for this won’t do the job by itself; many users (myself included) prefer buttons to shortcuts.