- Add game_stats table: pony_type, tema, successes, failures, victory, dice rolls - Record stats automatically when a game finishes (via /api/kast or /api/interact) - New GET /api/stats endpoint: total games, win rate, by pony type, by tema, recent games - Stats include: total_games, total_victories, win_rate, by_pony_type, by_tema, recent_games