Issue: AI Team Update cards expose private task data

When an AI Team Update card is added to a shared Dashboard, it pulls activity from all tasks the selected people are assigned to, including tasks in their Personal List and private Spaces. There's currently no option to exclude specific locations from the card's scope.

This creates a privacy concern: if a Dashboard is shared with a team, the AI-generated summary can surface private task names and details to anyone viewing that Dashboard, even though those tasks live in locations other members can't access directly.

Suggested improvement: Add a location filter or exclusion option to people-scoped AI cards (AI Team Update, AI StandUp), similar to how the AI Project Update card lets you select a specific Space/Folder/List. At minimum, Personal List tasks should be excluded by default from team-facing cards.