- Append pool-v2 in buy/sell remaining accounts only when pool coin_creator
is not default, matching @pump-fun/pump-swap-sdk. Always appending pool-v2
shifted buyback pubkey/ATA and caused BuybackFeeRecipientNotAuthorized (6053).
- Add coin_creator to PumpSwapParams (filled from decoded Pool / from_trade).
Update pumpswap_trading example to pass pool_data.coin_creator.
- Document buyback fee recipient constants against GlobalConfig.buyback_fee_recipients.
- Extend PumpSwap quote math to include cashback_fee_basis_points in creator-side fees.
Co-authored-by: Cursor <cursoragent@cursor.com>
