refactor: remove bounty system from PaymasterHub#118
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Remove the bundler-tipping bounty system and simplify paymaster for launch: - Delete bounty struct, storage, functions (setBounty, fundBounty, sweepBounty, _processBounty) - Remove receive() function (bounty funding only) - Simplify payload format: 130 -> 122 bytes (remove mailboxCommit8 field) - Simplify context: 7 -> 4 fields (remove userOpHash, mailboxCommit8, tx.origin) - Remove postUserOp function and UserOpPosted event - Streamline postOp to only do accounting (budget + org financials) - Update all tests with 7 new tests covering payload boundaries and context round-trips - Clean up documentation (remove bounty section, update payload format docs) All 144 paymaster tests pass. Backward compatible: 130-byte payloads still accepted. Co-Authored-By: Claude Haiku 4.5 <[email protected]>
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Summary
Remove the bundler-tipping bounty system and simplify PaymasterHub for launch by eliminating unnecessary complexity and attack surface. The bounty feature was not essential for standard ERC-4337 payments and added unwanted mental model.
Changes:
Test Coverage
Added 7 comprehensive tests covering critical gaps:
All 144 paymaster tests pass. Full backward compatibility maintained for longer payloads.
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