feat(mcm): add EIP-712 signature support #1325
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MCM improvements: execute fixes and EIP-712 signatures
Changes
set_root_eip712()for EIP-712 signature verificationset_root()logic intoset_root_internal()helperExecute instruction fix
The Execute instruction now reloads accounts after performing the CPI. This prevents Anchor from writing back stale outer copies if the CPI modified any accounts in the outer context.
EIP-712 signature support
Added EIP-712 typed structured data hashing alongside the existing Ethereum Personal Sign format. Both formats work in parallel, allowing users to choose which one to use.
EIP-712 Structure:
Domain:
EIP712Domain(string name, string version, uint256 chainId, bytes32 salt)Message:
RootValidation(bytes32 root, uint32 validUntil)