Feature
Set leaderboard sidebar now has an Athletes/Teams toggle. Teams view aggregates Total Cards, Autographs, Inserts, and Numbered by team with athlete count per team. Rookies-only filter hidden in Teams view.
Athletes/Teams Leaderboard Toggle
Added a two-option toggle (Athletes | Teams) to the set page leaderboard. Teams view groups by card-level team string, summing stats across all athletes on that team. Shows team name + "N Athletes" count. Column sorting works across both views. Rookies-only filter is hidden (but state preserved) in Teams view. Single shared component handles both mobile and desktop layouts.