十万个为什么科普图文生成

{
  "workflow_id": "generate_science_illustration_for_kids",
  "input": {
    "question": {
      "field_name": "question",
      "default": "",
      "description": "用户输入的“十万个为什么”科普提问，系统将基于此提问提炼视觉核心，适配3-8岁儿童认知",
      "example": "为什么海水不能喝？",
      "type": "string",
      "required": true
    },
    "aspect_ratio": {
      "field_name": "aspect_ratio",
      "default": "3:4",
      "description": "输出画幅比例，枚举：3:4(小红书/海报)、16:9(视频封面)、1:1(朋友圈)，默认3:4",
      "example": "1:1",
      "type": "string",
      "required": false
    }
  },
  "steps": [
    {
      "id": "step_0_prompt_guardian",
      "point_code": "1",
      "api_code": "prompt_guardian",
      "backend_type": "sys_api",
      "status": "PENDING",
      "name": "合规校验优化",
      "action": "run",
      "params": []
    },
    {
      "id": "step_1_generate_image",
      "point_code": "1",
      "result": [],
      "backend_type": "sys_api",
      "api_code": "3373",
      "status": "PENDING",
      "name": "生成科普图文",
      "action": "run",
      "params": {
        "prompt": "推荐最适合3-8岁儿童的{{@input.question}}的科普图文，要求使用中文，文字尽量少，且精准",
        "aspect_ratio": "{{@input.aspect_ratio}}"
      }
    },
    {
      "id": "step_2_poll_image_status",
      "point_code": "",
      "result": [],
      "backend_type": "sys_api",
      "api_code": "polling",
      "status": "PENDING",
      "name": "轮询科普图文生成状态",
      "action": "run",
      "params": {
        "result_url": "{{@step_1_generate_image.result.data.result_url}}"
      },
      "depends_on": [
        "step_1_generate_image"
      ],
      "polling": {
        "interval_seconds": 5,
        "timeout_seconds": 1200,
        "success_condition": "{{@step_2_poll_image_status.result.data.task_status}} === 'SUCCEEDED'"
      }
    }
  ],
  "output": {
    "image_url": {
      "field_name": "image_url",
      "description": "生成的科普图文图片URL",
      "value": "{{@step_2_poll_image_status.result.data.result_url}}",
      "type": "string"
    }
  }
}