{
  "summary": [
    {
      "name": "pbl_artifact",
      "title": "学生产出物表",
      "primary": ["id"],
      "catelog": "entity"
    }
  ],
  "fields": [
    {"name": "id", "title": "主键", "type": "str", "length": 32, "nullable": "no"},
    {"name": "tenant_id", "title": "租户ID(强制打头)", "type": "str", "length": 32, "nullable": "no", "default": "0"},
    {"name": "artifact_uid", "title": "产出UID", "type": "str", "length": 32, "nullable": "no"},
    {"name": "session_id", "title": "会话ID", "type": "str", "length": 32, "nullable": "no", "default": "0"},
    {"name": "blueprint_id", "title": "蓝图ID", "type": "str", "length": 32, "nullable": "no", "default": "0"},
    {"name": "team_id", "title": "团队ID", "type": "str", "length": 32, "nullable": "no", "default": "0"},
    {"name": "creator_id", "title": "作者", "type": "str", "length": 32, "nullable": "no", "default": "0"},
    {"name": "title", "title": "标题", "type": "str", "length": 128, "nullable": "no", "default": ""},
    {"name": "artifact_type", "title": "产出物类型", "type": "str", "length": 64, "nullable": "no", "default": "other"},
    {"name": "content_json", "title": "内容(序列化JSON文本)", "type": "text", "nullable": "yes"},
    {"name": "version_no", "title": "版本号(内联)", "type": "int", "nullable": "no", "default": "1"},
    {"name": "status", "title": "状态", "type": "str", "length": 64, "nullable": "no", "default": "draft"},
    {"name": "submitted_at", "title": "提交时间", "type": "datetime", "nullable": "yes"},
    {"name": "created_at", "title": "创建时间(应用层写入)", "type": "datetime", "nullable": "no"},
    {"name": "updated_at", "title": "更新时间(应用层写入)", "type": "datetime", "nullable": "no"}
  ],
  "indexes": [
    {"name": "uk_art_uid", "idxtype": "unique", "idxfields": ["tenant_id", "artifact_uid"]},
    {"name": "idx_art_session", "idxtype": "index", "idxfields": ["tenant_id", "session_id"]},
    {"name": "idx_art_blueprint", "idxtype": "index", "idxfields": ["tenant_id", "blueprint_id"]},
    {"name": "idx_art_creator", "idxtype": "index", "idxfields": ["tenant_id", "creator_id"]}
  ],
  "codes": [
    {"field": "artifact_type", "table": "appcodes_kv", "valuefield": "k", "textfield": "v", "cond": "parentid='pbl_artifact_type'"},
    {"field": "status", "table": "appcodes_kv", "valuefield": "k", "textfield": "v", "cond": "parentid='pbl_artifact_status'"},
    {"field": "blueprint_id", "table": "pbl_blueprint", "valuefield": "id", "textfield": "title"}
  ]
}