feat: integrated with artifacts in states

frontend/src/core/threads/types.ts

@@ -4,6 +4,7 @@ import type { Thread } from "@langchain/langgraph-sdk";
 export interface AgentThreadState extends Record<string, unknown> {
   title: string;
   messages: BaseMessage[];
+  artifacts: string[];
 }
 
 export interface AgentThread extends Thread<AgentThreadState> {}