Added Steam global leaderboards — compete with other players worldwide
Fastest Normal Win — complete the loop as fast as possible (time in ms, ascending)
Farthest Endless Room — survive as long as you can in endless mode (rooms, descending)
Leaderboard screen shows global rankings with Steam display names
Two tabs: NORMAL and ENDLESS (switch with TAB or click)
Gold/silver/bronze rank colors for top 3 players
End-of-run screens show your leaderboard rank and a quick-access Board (L) button
Scores upload automatically on run completion (one best score per player per board)
Dev mode runs are excluded from leaderboards
Local personal bests saved as fallback when Steam is offline