fix: oauth

echo_server.py

@@ -22,7 +22,7 @@ def get_last_game_pgn(username: str):
 )
 def analyze_latest_game(username: str, player_color: str):
     game = get_last_game_pgn(username)
-    return {"player_username": username, "pgn": game["games"][0]["pgn"]}
+    return {"player_username": username, "pgn": game["games"][-1]["pgn"]}
 
 
 @mcp.tool(description="Extracts PGN from a Chess.com game URL")