.env.example

# OpenAI API Configuration (Optional - only needed for AI chat feature)
OPENAI_API_KEY=your_openai_api_key_here

# LangSmith Configuration (Optional - for tracing)
LANGSMITH_API_KEY=your_langsmith_api_key_here
LANGSMITH_PROJECT=hbv-ai-assistant
LANGCHAIN_PROJECT=hbv-ai-assistant
LANGSMITH_URL=https://api.smith.langchain.com