- Replace openai with litellm for unified LLM interface - Support 100+ providers: OpenAI, Anthropic, Gemini, Azure, Ollama, etc. - Add custom API base URL support (LLM_API_BASE) - Add .env file support with python-dotenv - Add .env.example configuration template 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>