# Gradio API Token (HuggingFace) GRADIO_TOKEN=hf_your_token_here # OpenAI API Key (Optional - for local development) OPENAI_API_KEY=sk-your-api-key-here # Environment NODE_ENV=development # Server Port PORT=3200 # Feature Toggles (true/false) # 開発・検証環境用のボタンを表示するかどうか NEXT_PUBLIC_SHOW_DEV_BUTTONS=true