feat(abstract-eth): add ZAMA staking delegate flow#8775
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Implement SDK builder and ABI encoding utilities for the ZAMA ERC-4626
staking delegate flow:
- zamaStakingUtils.ts: ABI encoding for ERC20 approve(address,uint256)
and ERC4626 deposit(uint256,address) with correct selectors
(0x095ea7b3, 0x6e553f65)
- zamaStakingBuilder.ts: ZamaStakingBuilder class with buildApprove()
and buildDeposit() methods producing {to, data, value} tx requests
- Add CoinFeature.STAKING to ERC7984_TOKEN_FEATURES
- Comprehensive unit tests (38 new tests) with ABI round-trip decoding
TICKET: SI-560
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
zamaStakingUtils.tswith encoding forapprove(address,uint256)(0x095ea7b3) anddeposit(uint256,address)(0x6e553f65)zamaStakingBuilder.tswithZamaStakingBuilderclass providingbuildApprove()andbuildDeposit()methods that produce{to, data, value}tx requests for WPCoinFeature.STAKINGtoERC7984_TOKEN_FEATURESin staticsArchitecture
Transaction Flow
approve(address,uint256)0x095ea7b3deposit(uint256,address)0x6e553f65Dependencies
Ticket: SI-560
Test plan
🤖 Generated with Claude Code