Update requirements.txt

requirements.txt

@@ -1,14 +1,31 @@
-langchain
-langchain-google-genai
-langchain-experimental
-langchain-community
-google-generativeai
-pandas
-openpyxl
-xlrd
-matplotlib
-seaborn
-plotly
-streamlit
-python-dotenv
-tabulate
+---
+title: DataMind Agent
+emoji: 🧠
+colorFrom: purple
+colorTo: blue
+sdk: streamlit
+sdk_version: "1.40.1"
+python_version: "3.10"
+app_file: app.py
+pinned: false
+---
+
+# 🧠 DataMind Agent
+### Agentic AI Data Analyst — LangChain + Gemini + Streamlit
+
+Upload any data file (CSV, Excel, JSON) and chat with your data using natural language. The autonomous agent plans, selects tools, executes multi-step analysis, and explains its reasoning — powered by Google Gemini.
+
+## 🚀 Features
+- 💬 Natural language Q&A with memory
+- 🤖 Autonomous agent with 7 specialized tools
+- 📊 Auto-generated interactive visualizations
+- 🔍 Transparent reasoning — see every tool the agent uses
+- 📂 Supports CSV, Excel, JSON
+
+## ⚙️ How to Use
+1. Enter your free Gemini API key from aistudio.google.com
+2. Upload your data file
+3. Ask anything in the Chat tab!
+
+## 🛠️ Tech Stack
+LangChain · Google Gemini 1.5 Flash · Streamlit · Pandas · Plotly