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Anton Sauchyk
cc85daaeb3
* chore(pumpswap+docs): post-2026-04-28-cutover PumpSwap unlock + IDL docs Drops the `INCLUDE_BREAKING_FEE_ACCOUNTS = False` gate in the PumpSwap learning examples so the +2 breaking-fee accounts (fee recipient readonly + its quote-mint ATA mutable) are always appended after `pool-v2`. Mainnet pump-amm rejects this format pre-cutover (verified 6023 Overflow), so this PR is intentionally **draft until 2026-04-28 16:00 UTC** when the cutover happens; mark it ready-for-review and live- test then. Also captures the protocol gotchas we learned during this migration: - README: a new "2026-04-28 program upgrade" section + an explicit note that the vendored IDL is incomplete (missing `bonding-curve-v2` and `pool-v2` PDAs that the on-chain program actually requires) with pointers to cross-check against on-chain txs. - CLAUDE.md: a new "Pump.fun protocol notes" subsection summarising the same gotchas plus the BC/Pool/CreateEvent layout details and the extreme_fast_mode gotcha. Open question (call out at review time, resolve post-cutover): - BREAKING_FEE_RECIPIENT.md shows PumpSwap cashback account counts of 27 buy / 26 sell vs 26 / 24 non-cashback — the extra cashback account seed/position isn't documented. Need to sample a real successful cashback PumpSwap tx after cutover and add the branch. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * feat(pumpswap): wire cashback layout for post-2026-04-28 program upgrade Cashback PumpSwap pools require extra writable accounts inserted before pool-v2. Identified layouts by sampling on-chain post-cutover txs: - buy: insert user_volume_accumulator_quote_ata (27 accounts vs 26) ref tx 4JaWdExj…fvjK - sell: insert user_volume_accumulator_quote_ata + user_volume_accumulator (26 accounts vs 24) ref tx 4ei1cJV7…NP3 Detect via pool account byte 244 (is_cashback_coin). Adds the standalone sample_cashback_pumpswap.py used to reverse-engineer the layouts. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>