Improvements to convoy dashboard last_activity column: 1. When issues have no assignee: - Fall back to issue's updated_at timestamp - Show age with "(unassigned)" suffix, e.g., "2m (unassigned)" 2. When issues have assignee but no active tmux session: - Show "idle" instead of "no activity" 3. Added UpdatedAt field to track issue timestamps This provides better context for convoys that haven't been assigned yet. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>