# AI provider API keys (at least one is required)
OPENROUTER_API_KEY=sk-your-openrouter-key
OPENAI_API_KEY=sk-your-openai-key
GEMINI_API_KEY=AIza-your-gemini-key

# Public app URL (used for OpenRouter HTTP-Referer header)
NEXT_PUBLIC_APP_URL=http://localhost:3000