Apostando no veredito: caso Kalshi pode moldar mercados de previsão https://www.reuters.com/legal/litigation/betting-verdict-kalshi-case-could-shape-prediction-markets-2026-04-06/?taid=69d38c5f5fcb6f0001a6bf1c https://www.reuters.com/legal/litigation/betting-verdict-kalshi-case-could-shape-prediction-markets-2026-04-06/?taid=69d38c5f5fcb6f0001a6bf1c