[VPD-343] LeverageStrategiesManager and SwapHelper documentation

SUMMARY.md

@@ -187,6 +187,9 @@
   * [XVSBridgeAdmin](technical-reference/reference-xvs-bridge/XVSBridgeAdmin.md)
   * [XVS](technical-reference/reference-xvs-bridge/XVS.md)
   * [TokenController](technical-reference/reference-xvs-bridge/TokenController.md)
+* [Periphery](technical-reference/reference-periphery/README.md)
+  * [LeverageStrategiesManager](technical-reference/reference-periphery/leverage-strategies-manager.md)
+  * [SwapHelper](technical-reference/reference-periphery/swap-helper.md)
 
 ## Deployed Contracts
 
@@ -197,6 +200,7 @@
 * [XVS Omnichain](deployed-contracts/xvs-omnichain.md)
 * [Token Converters](deployed-contracts/token-converters.md)
 * [VenusERC4626](deployed-contracts/venus-erc4626.md)
+* [Periphery](deployed-contracts/periphery.md)
 
 ## Services
 

deployed-contracts/periphery.md

@@ -0,0 +1,6 @@
+# Periphery - Deployed Contracts
+
+## BNB Chain Mainnet
+
+- SwapHelper: [`0xD79be25aEe798Aa34A9Ba1230003d7499be29A24`](https://bscscan.com/address/0xD79be25aEe798Aa34A9Ba1230003d7499be29A24)
+- LeverageStrategiesManager: [`0x03F079E809185a669Ca188676D0ADb09cbAd6dC1`](https://bscscan.com/address/0x03F079E809185a669Ca188676D0ADb09cbAd6dC1)

technical-reference/contracts-overview.md

@@ -7,6 +7,7 @@ Venus Protocol contracts are divided in these repositories:
 * [venus-protocol](https://github.com/VenusProtocol/venus-protocol): The core protocol is located in this repo. It contains logic central to lending and borrowing of the core pool.
 * [governance-contracts](https://github.com/VenusProtocol/governance-contracts): The contracts used for proposing, voting and executing changes are kept in the \`governance-contracts repo.
 * [token-bridge](https://github.com/VenusProtocol/token-bridge): The contracts use to bridge XVS to different networks.
+* [venus-periphery](https://github.com/VenusProtocol/venus-periphery): Auxiliary contracts for advanced DeFi operations including leverage strategies and token swaps.
 
 ## Isolated Pools Contracts
 
@@ -177,3 +178,15 @@ The core logic for governance proposals is in the [GovernorBraveDelegate](https:
 To enhance security of the protocol, Venus Protocol uses the [AccessControlManager](https://github.com/VenusProtocol/governance-contracts/blob/main/contracts/Governance/AccessControlManager.sol) to grant accounts access to call specific functions on contracts. This contract is responsible for granting and revoking those permissions. It also provides a getter to check if an address is allowed to call a specific function.
 
 **Timelock** Once a proposal has succeeded its execution is managed by the [Timelock](https://github.com/VenusProtocol/governance-contracts/blob/main/contracts/Governance/Timelock.sol) contract. The Timelock can place the proposal in a queue for execution and execute the proposal. It also enables canceling the proposal.
+
+## Periphery Contracts
+
+Periphery contracts extend core protocol functionality with auxiliary features for advanced DeFi operations.
+
+[**LeverageStrategiesManager**](reference-periphery/leverage-strategies-manager.md)
+
+The [LeverageStrategiesManager](https://github.com/VenusProtocol/venus-periphery/blob/main/contracts/LeverageManager/LeverageStrategiesManager.sol) enables users to enter and exit leveraged positions atomically using flash loans. It consolidates multiple operations (borrow, swap, supply) into single transactions.
+
+[**SwapHelper**](reference-periphery/swap-helper.md)
+
+The [SwapHelper](https://github.com/VenusProtocol/venus-periphery/blob/main/contracts/SwapHelper/SwapHelper.sol) provides a secure multicall interface for token swaps with backend signature verification. It enables authorized interactions with external DEX protocols.

technical-reference/reference-periphery/README.md

@@ -0,0 +1,22 @@
+# Periphery Contracts
+
+Venus Protocol periphery contracts extend core protocol functionality with auxiliary features for advanced DeFi operations. These contracts integrate with the Venus Comptroller and vToken markets to provide atomic, gas-efficient operations.
+
+## Overview
+
+The Venus periphery consists of specialized smart contracts designed to streamline complex DeFi operations:
+
+- **[LeverageStrategiesManager](leverage-strategies-manager.md)** - Enter and exit leveraged positions atomically using flash loans
+- **[SwapHelper](swap-helper.md)** - Execute backend-authorized token swaps with signature verification
+
+## Key Features
+
+- Flash loan-based atomic execution
+- EIP-712 signature verification for authorized operations
+- EIP-1153 transient storage for efficient callback state management
+- Comprehensive account safety validation
+- Slippage protection on all swap operations
+
+## Deployment
+
+Periphery contracts are currently deployed on BNB Chain Mainnet. See [Deployed Contracts](../../deployed-contracts/periphery.md) for addresses and deployment information.