create deployTransceiver script use migrate function to update immutable specialRelayerAddr of deployed Transceiver contract

Author: evgeniko

evm/script/DeployTransceiver.s.sol

@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: Apache 2
+pragma solidity >=0.8.8 <0.9.0;
+
+import {Script, console2} from "forge-std/Script.sol";
+import {WormholeTransceiver} from "../src/Transceiver/WormholeTransceiver/WormholeTransceiver.sol";
+import {ERC1967Proxy} from "openzeppelin-contracts/contracts/proxy/ERC1967/ERC1967Proxy.sol";
+
+contract DeployWormholeTransceiver is Script {
+    function run(
+        address nttManager,
+        address wormholeCoreBridge,
+        address wormholeRelayerAddr,
+        address specialRelayerAddr,
+        uint8 consistencyLevel,
+        uint256 gasLimit
+    ) public {
+        vm.startBroadcast();
+
+        WormholeTransceiver implementation = new WormholeTransceiver(
+            nttManager,
+            wormholeCoreBridge,
+            wormholeRelayerAddr,
+            specialRelayerAddr,
+            consistencyLevel,
+            gasLimit
+        );
+
+        WormholeTransceiver transceiver = 
+            WormholeTransceiver(address(implementation));
+
+        console2.log("WormholeTransceiver address:", address(transceiver));
+
+        vm.stopBroadcast();
+    }
+}

evm/src/Transceiver/WormholeTransceiver/WormholeTransceiverState.sol

@@ -75,6 +75,10 @@ abstract contract WormholeTransceiverState is IWormholeTransceiverState, Transce
         _initializeTransceiver();
     }
 
+    function _migrate() internal virtual override {
+        _setMigratesImmutables(true);
+    }
+
     function _initializeTransceiver() internal {
         TransceiverStructs.TransceiverInit memory init = TransceiverStructs.TransceiverInit({
             transceiverIdentifier: WH_TRANSCEIVER_INIT_PREFIX,

evm/test/Upgrades.t.sol

@@ -389,6 +389,27 @@ contract TestUpgrades is Test, IRateLimiterEvents {
         );
     }
 
+    function test_specialRelayerMigration() public {
+        WormholeTransceiver newImplementation = new MockWormholeTransceiverImmutableAllow(
+            address(nttManagerChain1),
+            address(wormhole),
+            address(relayer),
+            address(0x8C56eE9cd232d23541a697C0eBd3cA597DE3c88D), // new specialRelayer address
+            FAST_CONSISTENCY_LEVEL,
+            GAS_LIMIT
+        );
+
+        // Perform upgrade which will trigger migration
+        wormholeTransceiverChain1.upgrade(address(newImplementation));
+
+        // Verify specialRelayer was set to the expected address
+        require(
+            address(wormholeTransceiverChain1.specialRelayer()) == 0x8C56eE9cd232d23541a697C0eBd3cA597DE3c88D,
+            "SpecialRelayer not set to expected address"
+        );
+    }
+
+
     function test_authNttManager() public {
         // User not owner so this should fail
         vm.prank(userA);