{
    "summary": [
        {
            "name": "pipeline_task_steps",
            "title": "任务步骤执行表",
            "primary": ["id"],
            "catelog": "entity"
        }
    ],
    "fields": [
        {"name": "id", "title": "主键ID", "type": "str", "length": 32, "nullable": "no"},
        {"name": "task_id", "title": "任务ID", "type": "str", "length": 32, "nullable": "no"},
        {"name": "step_name", "title": "步骤名称", "type": "str", "length": 64, "nullable": "no"},
        {"name": "step_type", "title": "步骤类型(用于handler匹配)", "type": "str", "length": 64, "nullable": "no"},
        {"name": "display_name", "title": "显示名称", "type": "str", "length": 128},
        {"name": "step_order", "title": "执行顺序", "type": "int", "nullable": "no", "default": "0"},
        {"name": "deps", "title": "依赖步骤(JSON数组)", "type": "text", "default": "'[]'"},
        {"name": "state", "title": "步骤状态", "type": "str", "length": 32, "nullable": "no", "default": "pending"},
        {"name": "error_msg", "title": "错误信息", "type": "text"},
        {"name": "started_at", "title": "开始执行时间", "type": "timestamp"},
        {"name": "completed_at", "title": "完成时间", "type": "timestamp"}
    ],
    "indexes": [
        {"name": "idx_pts_task", "idxtype": "index", "idxfields": ["task_id"]},
        {"name": "idx_pts_state", "idxtype": "index", "idxfields": ["state"]}
    ],
    "codes": [
        {"field": "state", "table": "appcodes_kv", "valuefield": "k", "textfield": "v", "cond": "parentid='step_state'"},
        {"field": "step_type", "table": "appcodes_kv", "valuefield": "k", "textfield": "v", "cond": "parentid='step_type'"}
    ]
}