Each person has a color, and their entries wear it on the wall. Removing
someone never deletes their entries — those become house entries.
Display
The wall
Night
The page goes black between these times; a touch or a mouse move brings the calendar back for the wake time. Nothing is announced while it is dark.
Voice
Asking out loud
Home Assistant can tell the wall what to show — "show Marius' meetings
for today", "show tomorrow", "what has Ana got on Friday". The wall
shows it, says the answer back, and returns to today on its own.