# AI Provider: "openai" | "anthropic" | "google"
AI_PROVIDER=openai

# OpenAI (OpenAI-compatible; set OPENAI_BASE_URL to use OpenRouter or another provider)
OPENAI_API_KEY=sk-your-key-here
OPENAI_BASE_URL=https://openrouter.ai/api/v1
OPENAI_MODEL=qwen/qwen3.7-flash

# Anthropic (optional)
ANTHROPIC_API_KEY=sk-ant-your-key-here
ANTHROPIC_MODEL=claude-sonnet-4-20250514

# Google (optional)
GOOGLE_API_KEY=your-google-api-key-here
GOOGLE_MODEL=gemini-2.0-flash

# Server
PORT=3001
CORS_ORIGIN=http://localhost:5173