{
  "summary": [
    {
      "table": "pbl_blueprint_mission",
      "name": "蓝图Mission",
      "title": "驱动问题/Mission",
      "subtitle": "蓝图子对象-驱动问题",
      "primary": ["id"],
      "defaultsort": "seq asc",
      "orderby": "seq asc",
      "caption": "Mission"
    }
  ],
  "fields": [
    {"name": "id", "type": "str(32)", "title": "主键", "notnull": 1, "primary": 1, "readonly": 1},
    {"name": "tenant_id", "type": "str(32)", "title": "租户ID", "notnull": 1, "default": "0"},
    {"name": "blueprint_id", "type": "str(32)", "title": "所属蓝图", "notnull": 1},
    {"name": "seq", "type": "int", "title": "序号", "notnull": 1, "default": 0},
    {"name": "mission_code", "type": "str(64)", "title": "Mission编码", "notnull": 1},
    {"name": "title", "type": "str(255)", "title": "Mission标题", "notnull": 1},
    {"name": "driving_question", "type": "text", "title": "驱动问题", "default": ""},
    {"name": "narrative", "type": "longtext", "title": "情境叙事", "default": ""},
    {"name": "success_criteria", "type": "text", "title": "成功标准JSON数组", "default": "[]"},
    {"name": "related_goal_ids", "type": "text", "title": "关联学习目标ID JSON数组", "default": "[]"},
    {"name": "duration_hours", "type": "int", "title": "预计课时", "default": 0},
    {"name": "created_by", "type": "str(32)", "title": "创建人", "default": ""},
    {"name": "created_at", "type": "datetime", "title": "创建时间", "notnull": 1},
    {"name": "updated_by", "type": "str(32)", "title": "更新人", "default": ""},
    {"name": "updated_at", "type": "datetime", "title": "更新时间"}
  ],
  "indexes": [
    {"name": "uk_pbl_mission_code", "fields": ["tenant_id", "blueprint_id", "mission_code"], "unique": 1},
    {"name": "idx_pbl_mission_bp", "fields": ["tenant_id", "blueprint_id", "seq"], "unique": 0}
  ],
  "codes": [
    {"field": "blueprint_id", "table": "pbl_blueprint", "cond": "", "valuefield": "id", "textfield": "title"}
  ]
}