DATABASE_URL=mysql+pymysql://root:password@localhost:3306/yuzong SECRET_KEY=your-secret-key-change-this ALGORITHM=HS256 ACCESS_TOKEN_EXPIRE_MINUTES=1440 UPLOAD_DIR=uploads # AI 生图配置 SILICONFLOW_API_KEY=sk-xxx SILICONFLOW_BASE_URL=https://api.siliconflow.cn/v1 VOLCENGINE_API_KEY=xxx VOLCENGINE_BASE_URL=https://ark.cn-beijing.volces.com/api/v3 AI_IMAGE_MODEL=flux-dev AI_IMAGE_SIZE=1024