VITE_SUPABASE_URL=your_supabase_url
VITE_SUPABASE_ANON_KEY=your_supabase_anon_key
VITE_OPENAI_API_KEY=your_openai_api_key
VITE_OPENROUTER_API_KEY=your_openrouter_api_key
VITE_AI_MODEL=openai/gpt-4o-mini