LangChain section cleanup (#669)

* resolve conflict

* 🤖 Regenerate LLMs.txt

* merge main into this branch

* redirects

* redirect?

* 🤖 Regenerate LLMs.txt

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: torresmateo

app/en/get-started/agent-frameworks/langchain/_meta.tsx

@@ -1,5 +1,4 @@
 export default {
-  "use-arcade-tools": "Using Arcade tools",
-  "user-auth-interrupts": "User authorization",
   "auth-langchain-tools": "Authorizing existing tools",
+  "use-arcade-with-langchain": "Setup Arcade with LangChain",
 };

app/en/get-started/agent-frameworks/langchain/use-arcade-tools/page.mdx

@@ -461,6 +461,8 @@ You should see the agent responding to your prompts like any model, as well as h
 
 ## Example code
 
+<details>
+<summary>**main.ts** (full file)</summary>
 ```ts filename="main.ts"
 "use strict";
 import { Arcade } from "@arcadeai/arcadejs";
@@ -737,3 +739,4 @@ async function main() {
 // Run the main function
 main().catch((err) => console.error(err));
 ```
+</details>