Chess:
- "التحليل التفصيلي" button in review now navigates to chess-analysis
  (interactive move-by-move board with eval bar) instead of scene.pop()

Ludo:
- Complete leaderboard showing all players ranked 1st-4th
- Each player shown with their name, color dot, and medal/rank
- Current player highlighted with gold border
- Proper rewards display (coins + XP + rating change)
- Pass playerNames and playerColors from game to result scene

Backgammon:
- Add rewards display (coins + XP) to result screen
- Emit coins:earned and xp:earned events for HUD sync
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>