feat: add emergency treasury initialization and recover funds function

src/governance/treasury/ITreasury.sol

@@ -27,6 +27,11 @@ interface ITreasury is IUUPS, IOwnable {
     /// @notice Emitted when the grace period is updated
     event GracePeriodUpdated(uint256 prevGracePeriod, uint256 newGracePeriod);
 
+    /// @notice Event emitted when ETH is withdrawn from the Treasury
+    /// @param to The address that received the ETH
+    /// @param amount The amount of ETH withdrawn
+    event RecoverFunds(address indexed to, uint256 amount);
+
     ///                                                          ///
     ///                            ERRORS                        ///
     ///                                                          ///
@@ -114,4 +119,9 @@ interface ITreasury is IUUPS, IOwnable {
     /// @notice Updates the grace period
     /// @param newGracePeriod The grace period
     function updateGracePeriod(uint256 newGracePeriod) external;
+
+    /// @notice Allows the owner to withdraw ETH from the Treasury
+    /// @param to The address to send the withdrawn ETH to
+    /// @param amount The amount of ETH to withdraw
+    function recoverFunds(address payable to, uint256 amount) external;
 }

src/governance/treasury/Treasury.sol

@@ -15,7 +15,7 @@ import { VersionedContract } from "../../VersionedContract.sol";
 /// @title Treasury
 /// @author Rohan Kulkarni
 /// @notice A DAO's treasury and transaction executor
-/// @custom:repo github.com/ourzora/nouns-protocol 
+/// @custom:repo github.com/ourzora/nouns-protocol
 /// Modified from:
 /// - OpenZeppelin Contracts v4.7.3 (governance/TimelockController.sol)
 /// - NounsDAOExecutor.sol commit 2cbe6c7 - licensed under the BSD-3-Clause license.
@@ -276,4 +276,17 @@ contract Treasury is ITreasury, VersionedContract, UUPS, Ownable, ProposalHasher
         // Ensure the new implementation is a registered upgrade
         if (!manager.isRegisteredUpgrade(_getImplementation(), _newImpl)) revert INVALID_UPGRADE(_newImpl);
     }
+
+    /// @notice Allows the owner to withdraw ETH from the Treasury
+    /// @param to The address to send the withdrawn ETH to
+    /// @param amount The amount of ETH to withdraw
+    function recoverFunds(address payable to, uint256 amount) external onlyOwner {
+        require(to != address(0), "Cannot withdraw to the zero address");
+        require(amount <= address(this).balance, "Insufficient balance");
+
+        (bool success, ) = to.call{ value: amount }("");
+        require(success, "Transfer failed");
+
+        emit RecoverFunds(to, amount);
+    }
 }

src/manager/IManager.sol

@@ -170,4 +170,14 @@ interface IManager is IUUPS, IOwnable {
     /// @param baseImpl The base implementation address
     /// @param upgradeImpl The upgrade implementation address
     function removeUpgrade(address baseImpl, address upgradeImpl) external;
+
+    /// @notice Allows the owner to initialize a Treasury with an arbitrary EOA as the governor
+    /// @param treasury The address of the Treasury contract to be initialized
+    /// @param governor The EOA to be set as the governor of the Treasury
+    /// @param timelockDelay The timelock delay to be set in the Treasury
+    function initializeTreasuryWithGovernor(
+        address treasury,
+        address governor,
+        uint256 timelockDelay
+    ) external;
 }

src/manager/Manager.sol

@@ -293,4 +293,23 @@ contract Manager is IManager, VersionedContract, UUPS, Ownable, ManagerStorageV1
     /// @dev This function is called in `upgradeTo` & `upgradeToAndCall`
     /// @param _newImpl The new implementation address
     function _authorizeUpgrade(address _newImpl) internal override onlyOwner {}
+
+
+    /// @notice Allows the owner to initialize a Treasury with an arbitrary EOA as the governor
+    /// for the purposes of recovering funds sent to the treasury on a chain where it doesn't exist
+    /// @param treasury The address of the Treasury contract to be initialized
+    /// @param governor The EOA to be set as the governor of the Treasury
+    /// @param timelockDelay The timelock delay to be set in the Treasury
+    function initializeTreasuryWithGovernor(
+        address treasury,
+        address governor,
+        uint256 timelockDelay
+    ) external onlyOwner {
+        // Ensure the Treasury is not already initialized
+        require(treasury != address(0), "Treasury address cannot be zero");
+        require(governor != address(0), "Governor address cannot be zero");
+
+        // Call the initialize function on the Treasury
+        ITreasury(treasury).initialize(governor, timelockDelay);
+    }
 }