Update requirements.txt

requirements.txt

@@ -1,2 +1,24 @@
 gradio
-requests
+requests
+
+langchain==0.2.0
+langgraph==0.0.33
+langchain-openai==0.1.7
+langchain-community==0.2.0
+
+# Tools and Utilities
+duckduckgo-search==5.1.0
+wikipedia==1.4.0
+requests==2.31.0
+
+# Optional (but recommended) for enhanced functionality
+python-dotenv==1.0.1  # For environment variable management
+tiktoken==0.7.0  # For token counting
+faiss-cpu==1.8.0  # For vector storage (if adding memory)
+sentence-transformers==2.7.0  # For embeddings
+pydantic==2.7.1  # For data validation
+
+# Development/Testing
+pytest==8.1.1
+ipython==8.22.2  # For interactive debugging
+black==24.3.0  # Code formatting