GET /rounds/current's jackpot_sats was the full pool (participant_count * bet_amount_sats), which overstates what the winner actually receives once the 30% commission is taken out at payout time. Apply the same 70% split rounds/scheduler.py uses so the number shown during the round already matches the real payout, without surfacing the fee itself in the UI/docs. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>