Updated the kanban card partial to display project information when in all-projects mode:
- Added a project badge that displays below the ticket type and assigned agent
- The badge only shows when @all_projects_mode is true AND ticket.project exists
- Uses defined?() check to safely test for the instance variable
- Styled as a subtle gray badge with border to be visually distinct but not overwhelming
- Positioned between the agent/subtask info and the subtask progress indicator
The design keeps the single-project view unchanged (no extra project shown) while providing clear project context when viewing multiple projects together.