feat: solution for 'Экзамен: RAG-агент с ChromaDB и веб-поиском'

package.json

@@ -1,16 +1,17 @@
 {
   "name": "rag-agent-chromadb-websearch",
   "version": "1.0.0",
-  "description": "RAG agent using ChromaDB and OpenAI API with web search",
+  "description": "RAG agent using ChromaDB and web search with LangChain 1.x",
   "main": "src/index.js",
-  "type": "commonjs",
+  "type": "module",
   "scripts": {
     "start": "node src/index.js"
   },
   "dependencies": {
     "chromadb": "^1.0.0",
-    "dotenv": "^16.4.5",
-    "node-fetch": "^2.6.7",
-    "openai": "^4.12.0"
+    "dotenv": "^16.0.3",
+    "langchain": "^1.0.0",
+    "openai": "^3.3.0",
+    "serpapi": "^2.0.0"
   }
 }