sepolia redeploy

test/MockFlashBorrower.sol

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+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.30;
+
+import {IERC3156FlashBorrower} from "../lib/openzeppelin-contracts/contracts/interfaces/IERC3156FlashBorrower.sol";
+import {IERC20} from "../lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol";
+
+// Minimal flash borrower that repays amount + fee back to the pool passed via data
+contract MockFlashBorrower is IERC3156FlashBorrower {
+    // IERC3156FlashBorrower callback
+    function onFlashLoan(
+        address /*initiator*/,
+        address token,
+        uint256 amount,
+        uint256 fee,
+        bytes calldata data
+    ) external returns (bytes32) {
+        address poolAddr = abi.decode(data, (address));
+        IERC20(token).approve(poolAddr, amount + fee);
+        return keccak256("ERC3156FlashBorrower.onFlashLoan");
+    }
+}