Add AgentHandle to public api export

Author: melnikov-s

package.json

@@ -1,6 +1,6 @@
 {
   "name": "codex-sdk",
-  "version": "0.2.6",
+  "version": "0.2.7",
   "license": "Apache-2.0",
   "type": "module",
   "main": "./dist/lib.js",

src/lib.tsx

@@ -7,6 +7,7 @@ export {
   WorkflowHooks,
   WorkflowFactory,
   WorkflowState,
+  AgentHandle,
   createAgentWorkflow,
 } from "./workflow/index.js";