GAME LOGIC: Have our player avatars show in the Negotiation screen, but only for the active player

Only _your_ player should show on your player negotiation screen. There is logic already built in to decide if you are a player or not, and we have the logic already in place to determine who is who, but I would like that moved to the Negotiation screen component, preferably into the personal info component.

Start with the Negotiation screen component and its personal info component, then trace the existing logic that identifies the current player and distinguishes players from non-players. The work is done when the Negotiation screen shows only the active player's avatar on that player's screen.

Written by the indexing model from the issue text.