refactor: event before external call, docs

packages/contracts-rfq/contracts/AdminV2.sol

@@ -42,28 +42,36 @@ contract AdminV2 is AccessControlEnumerable, IAdminV2, IAdminV2Errors {
         _setCancelDelay(DEFAULT_CANCEL_DELAY);
     }
 
+    /// @notice Allows the contract governor to set the cancel delay. The cancel delay is the time after the transaction
+    /// deadline after which it can be permissionlessly cancelled, if it hasn't been proven by any of the Relayers.
     function setCancelDelay(uint256 newCancelDelay) external onlyRole(GOVERNOR_ROLE) {
         _setCancelDelay(newCancelDelay);
     }
 
+    /// @notice Allows the contract governor to set the protocol fee rate. The protocol fee is taken from the origin
+    /// amount only for completed and claimed transactions.
+    /// @dev The protocol fee is abstracted away from the relayers, they always operate using the amounts after fees:
+    /// what they see as the origin amount emitted in the log is what they get credited with.
     function setProtocolFeeRate(uint256 newFeeRate) external onlyRole(GOVERNOR_ROLE) {
         if (newFeeRate > FEE_RATE_MAX) revert FeeRateAboveMax();
         uint256 oldFeeRate = protocolFeeRate;
         protocolFeeRate = newFeeRate;
         emit FeeRateUpdated(oldFeeRate, newFeeRate);
     }
 
+    /// @notice Allows the contract governor to sweep the accumulated protocol fees in the contract.
     function sweepProtocolFees(address token, address recipient) external onlyRole(GOVERNOR_ROLE) {
         uint256 feeAmount = protocolFees[token];
         if (feeAmount == 0) return; // skip if no accumulated fees
 
         protocolFees[token] = 0;
+        emit FeesSwept(token, recipient, feeAmount);
+        /// Sweep the fees as the last transaction action
         if (token == NATIVE_GAS_TOKEN) {
             Address.sendValue(payable(recipient), feeAmount);
         } else {
             IERC20(token).safeTransfer(recipient, feeAmount);
         }
-        emit FeesSwept(token, recipient, feeAmount);
     }
 
     /// @notice Internal function to set the cancel delay. Security checks are performed outside of this function.