Initial commit: add .gitignore and README

test/Protocolink.test.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.20;
+
+import "forge-std/Test.sol";
+import "../contracts/examples/ProtocolinkExecutor.sol";
+import "../contracts/interfaces/IERC20.sol";
+
+contract ProtocolinkTest is Test {
+    ProtocolinkExecutor public executor;
+    
+    // Mainnet addresses (update with actual Protocolink Router address)
+    address constant PROTOCOLINK_ROUTER = 0xf7b10d603907658F690Da534E9b7dbC4dAB3E2D6;
+    address constant USDC = 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48;
+    
+    uint256 mainnetFork;
+
+    function setUp() public {
+        // Fork mainnet
+        mainnetFork = vm.createFork(vm.envString("MAINNET_RPC_URL"));
+        vm.selectFork(mainnetFork);
+
+        // Deploy contract
+        executor = new ProtocolinkExecutor(PROTOCOLINK_ROUTER);
+    }
+
+    function testExecuteRoute() public {
+        // This is a placeholder test
+        // In production, you would:
+        // 1. Build a Protocolink route (e.g., swap + supply)
+        // 2. Encode it as bytes
+        // 3. Execute via executor.executeRoute()
+        
+        // Example: Empty route data (will fail, but demonstrates structure)
+        bytes memory routeData = "";
+        
+        // Note: Actual implementation would require building proper Protocolink route data
+        // This is a conceptual test structure
+        // vm.expectRevert();
+        // executor.executeRoute(routeData);
+    }
+}
+