- Add Team tab to Sidebar with TeamList component
- Update MainViewType to include 'team' view
- Add TeamCollaborationView rendering in App.tsx
- Add selectedTeamId and onSelectTeam props to Sidebar
- Create TeamList component for sidebar team navigation
UI Integration:
- Team tab shows list of teams with status indicators
- Selecting a team displays TeamCollaborationView
- Empty state shows guidance for creating teams
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
