The four V4 swap actions are read only as the parameter structs deployed
on mainnet and Sepolia. ethers decoded the newer v4-periphery structs,
which add minHopPriceX36, as the deployed ones without an error, and the
newer multi-hop exact-in struct showed the offset of its hop-price array
as the swap amount. A decode now counts only when encoding it again gives
back the same bytes. When a swap action fails that, its step is listed as
"V4 Swap (could not be decoded)", and a token line left without a
currency reads "Unknown (could not be decoded)" rather than "not named in
the calldata". The README records both.
Model: opus-5-5
tokenInfo(null) yielded "ETH (native)", so a swap whose input token the calldata never named was asserted to the user as ETH. The determination established for the output side in #353 applies unchanged: Currency is a value type over address, so native ETH arrives as the truthy zero-address string and WRAP_ETH sets it explicitly -- null can only mean undetermined.
The rule now lives in tokenInfo() itself rather than at each call site, so the redundant output-side guard added by #356 is removed; both sides read one UNNAMED_CURRENCY constant and cannot drift. Verified by execution that a genuine native-ETH input still renders as ETH, including via WRAP_ETH and a V4 zero-address PoolKey, and that the real mainnet output-side fixture is unchanged.
sneak
clawbot