Add proxy contract for TST

script/DeployTokenWithProxy.s.sol

@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: MIT
+pragma solidity >=0.8.19 <0.9.0;
+
+import { BaseScript } from "./Base.s.sol";
+import { TestStableToken } from "../test/TestStableToken.sol";
+import { 
+    TransparentUpgradeableProxy, 
+    ITransparentUpgradeableProxy 
+} from "@openzeppelin/contracts/proxy/transparent/TransparentUpgradeableProxy.sol";
+import { ProxyAdmin } from "@openzeppelin/contracts/proxy/transparent/ProxyAdmin.sol";
+
+contract DeployTokenWithProxy is BaseScript {
+    function run() public broadcast returns (address proxy, address implementation, address admin) {
+        // Deploy the initial implementation
+        implementation = address(new TestStableToken());
+        
+        // Deploy proxy admin
+        admin = address(new ProxyAdmin());
+        
+        // Deploy the proxy with empty initialization data
+        proxy = address(new TransparentUpgradeableProxy(implementation, admin, ""));
+        
+        return (proxy, implementation, admin);
+    }
+}
+
+contract UpdateTokenImplementation is BaseScript {
+    function run(address proxyAddress, address proxyAdminAddress) public broadcast returns (address newImplementation) {
+        // Deploy new implementation
+        newImplementation = address(new TestStableToken());
+        
+        // Upgrade via ProxyAdmin
+        ProxyAdmin(proxyAdminAddress).upgradeAndCall(
+            ITransparentUpgradeableProxy(proxyAddress),
+            newImplementation,
+            ""
+        );
+        
+        return newImplementation;
+    }
+}