merge(main): reconcile remote main into x402 verification branch

script/z-chain/DeployZChainEmoney.s.sol

@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.20;
+
+import "forge-std/Script.sol";
+import "forge-std/console.sol";
+import "../../contracts/z-chain/ZChainUSDC.sol";
+import "../../contracts/emoney/AccountWalletRegistry.sol";
+
+/**
+ * @title DeployZChainEmoney
+ * @notice Deploys cUSDC + AccountWalletRegistry on Z Chain (900002)
+ */
+contract DeployZChainEmoney is Script {
+    function run() external {
+        uint256 deployerPrivateKey = vm.envUint("PRIVATE_KEY");
+        address deployer = vm.addr(deployerPrivateKey);
+        string memory rpcUrl = vm.envOr("CHAIN_900002_RPC_URL", string("http://127.0.0.1:8546"));
+
+        console.log("Deployer:", deployer);
+        console.log("RPC URL:", rpcUrl);
+        console.log("Chain ID: 900002");
+
+        vm.startBroadcast(deployerPrivateKey);
+
+        ZChainUSDC cUsdc = new ZChainUSDC(deployer);
+        AccountWalletRegistry registry = new AccountWalletRegistry(deployer);
+
+        vm.stopBroadcast();
+
+        console.log("\n=== Z Chain deployment ===");
+        console.log("cUSDC:", address(cUsdc));
+        console.log("AccountWalletRegistry:", address(registry));
+        console.log("\nUpdate config/z-chain-deployed.v1.json and hybx-omnl-cross-chain-lines.json chains.900002");
+    }
+}