Add Studio screenshot and improve setup instructions

- Add LangGraph Studio screenshot to README
- Uncomment API key setup section for clarity
- Simplify venv creation instructions

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

README.md

@@ -6,20 +6,24 @@ Simple starter code for building a music store customer support agent using the
 
 ```bash
 # 1. Create and activate virtual environment
-python3 -m venv --clear venv # (clear existing venv)
+# rm -rf venv (optional to clear existing venv)
+python3 -m venv venv # (clear existing venv)
 source venv/bin/activate
 
 # 2. Install dependencies
 pip install --upgrade -r requirements.txt
 
-# 3. Add your API keys to .env
-#    - OPENAI_API_KEY: https://platform.openai.com/api-keys
-#    - LANGSMITH_API_KEY: https://smith.langchain.com/ (sign up, then Settings > API Keys)
+3. Add your API keys to .env
+   - OPENAI_API_KEY: https://platform.openai.com/api-keys
+   - LANGSMITH_API_KEY: https://smith.langchain.com/ (sign up, then Settings > API Keys)
 
 # 4. Run Studio
 langgraph dev
 ```
 
+![LangGraph Studio Screenshot](studio.png)
+
+
 This opens LangGraph Studio in your browser where you can chat with the agent.
 The Chinook database is loaded automatically from GitHub on startup.