[Idea] Real-Time Mouse Pointer Visualization with Privacy for Card Selection

[ModPhoenix]

Title

As a participant in a poker planning session,
I want to see the mouse pointers of other participants in real-time, except when near picking cards,
So that I can better understand their focus and interactions during the planning process while maintaining the integrity of private card selection.

Acceptance Criteria

1. Each participant's mouse pointer is visible to all other participants.
2. Mouse pointers are updated in real-time as participants move their mice.
3. Each pointer is uniquely identifiable (e.g., different colors or labels).
4. The feature can be toggled on/off by the session host.
5. Mouse pointers automatically hide when they come within a certain proximity of the picking cards area.
6. Mouse pointers reappear when they move away from the picking cards area.