{
  "summary": [
    {
      "table": "scene",
      "primary": ["id"],
      "engine": "InnoDB",
      "comment": "场景表"
    }
  ],
  "fields": [
    {"name": "id", "type": "str(32)", "nullable": false, "default": "", "comment": "主键"},
    {"name": "world_id", "type": "str(32)", "nullable": false, "default": "", "comment": "所属世界（逻辑关联 world.id，不加外键）"},
    {"name": "name", "type": "str(255)", "nullable": false, "default": "", "comment": "场景名称"},
    {"name": "code", "type": "str(64)", "nullable": false, "default": "", "comment": "场景编码（唯一）"},
    {"name": "description", "type": "text", "nullable": true, "comment": "描述"},
    {"name": "scene_type", "type": "str(16)", "nullable": false, "default": "0", "comment": "场景类型（appcodes scene_type，默认 0）"},
    {"name": "status", "type": "str(16)", "nullable": false, "default": "0", "comment": "状态（appcodes scene_status，默认 0）"},
    {"name": "config_json", "type": "text", "nullable": true, "comment": "场景配置 JSON"},
    {"name": "created_at", "type": "timestamp", "nullable": false, "comment": "创建时间"},
    {"name": "updated_at", "type": "timestamp", "nullable": false, "comment": "更新时间"}
  ],
  "indexes": [
    {"name": "idx_scene_code", "fields": ["code"], "unique": true},
    {"name": "idx_scene_world", "fields": ["world_id"], "unique": false}
  ],
  "codes": [
    {"field": "world_id", "table": "world", "valuefield": "id", "textfield": "name"},
    {"field": "scene_type", "table": "appcodes_kv", "cond": "parentid='scene_type'", "valuefield": "k", "textfield": "v"},
    {"field": "status", "table": "appcodes_kv", "cond": "parentid='scene_status'", "valuefield": "k", "textfield": "v"}
  ]
}