fix message reversing

agent/agent.tsx

@@ -32,7 +32,8 @@ async function router(
   const prompt = `You're a highly helpful AI assistant, tasked with routing the user's query to the appropriate tool.
 You should analyze the user's input, and choose the appropriate tool to use.`;
 
-  const recentHumanMessage = state.messages
+  const messagesCopy = state.messages;
+  const recentHumanMessage = messagesCopy
     .reverse()
     .find((m) => m.getType() === "human");
 
@@ -65,7 +66,11 @@ function handleRoute(
 
 async function handleGeneralInput(state: GenerativeUIState) {
   const llm = new ChatOpenAI({ model: "gpt-4o-mini", temperature: 0 });
-  const response = await llm.invoke(state.messages);
+  const messagesCopy = state.messages;
+  messagesCopy.reverse();
+  console.log("messagesCopy", messagesCopy);
+
+  const response = await llm.invoke(messagesCopy);
 
   return {
     messages: [response],

agent/stockbroker/nodes/tools.tsx

@@ -1,5 +1,4 @@
 import { StockbrokerState } from "../types";
-import { ToolMessage } from "@langchain/core/messages";
 import { ChatOpenAI } from "@langchain/openai";
 import { typedUi } from "@langchain/langgraph-sdk/react-ui/server";
 import type ComponentMap from "../../uis/index";
@@ -64,19 +63,8 @@ export async function callTools(
     ui.write("portfolio", {});
   }
 
-  const toolMessages =
-    message.tool_calls?.map((tc) => {
-      return new ToolMessage({
-        name: tc.name,
-        tool_call_id: tc.id ?? "",
-        content: "Successfully handled tool call",
-      });
-    }) || [];
-
-  console.log("Returning", [message, ...toolMessages]);
-
   return {
-    messages: [message, ...toolMessages],
+    messages: [message],
     // TODO: Fix the ui return type.
     ui: ui.collect as any[],
     timestamp: Date.now(),

agent/uis/stock-price/index.tsx

@@ -15,7 +15,9 @@ export default function StockPrice(props: {
     apiUrl: "http://localhost:3123",
   });
 
-  const aiTool = thread.messages
+  const messagesCopy = thread.messages;
+
+  const aiTool = messagesCopy
     .slice()
     .reverse()
     .find(