{
  "summary": [
    {
      "name": "pbl_ui_page_registry",
      "title": "PBL 覆盖层页面注册表（12 页面 + 渲染时延预算）",
      "primary": ["id"],
      "catelog": "dimession"
    }
  ],
  "fields": [
    {
      "name": "tenant_id",
      "title": "租户ID(多租户强制打头，由应用层 tenant_scope 写入)",
      "type": "str",
      "length": 32,
      "nullable": "no",
      "default": "0"
    },
    {
      "name": "id",
      "title": "主键ID(应用层 getID/uniqueID 生成的32位字符串)",
      "type": "str",
      "length": 32,
      "nullable": "no"
    },
    {
      "name": "page_key",
      "title": "页面键(与 core.js PAGES 注册表同源)",
      "type": "str",
      "length": 64,
      "nullable": "no"
    },
    {
      "name": "title",
      "title": "页面标题",
      "type": "str",
      "length": 128,
      "nullable": "no"
    },
    {
      "name": "route",
      "title": "页面壳路由(/pbl_overlay/<key>.ui)",
      "type": "str",
      "length": 256,
      "nullable": "no"
    },
    {
      "name": "widget_type",
      "title": "覆盖层渲染组件类型",
      "type": "str",
      "length": 64,
      "nullable": "no"
    },
    {
      "name": "requires_role",
      "title": "访问所需角色(logined/teacher)",
      "type": "str",
      "length": 64,
      "nullable": "no",
      "default": "logined"
    },
    {
      "name": "budget_ms",
      "title": "渲染时延预算(毫秒: 世界内500/首屏1500)",
      "type": "int",
      "nullable": "no",
      "default": "1500"
    },
    {
      "name": "enabled",
      "title": "是否启用(1=启用,0=停用)",
      "type": "str",
      "length": 1,
      "nullable": "no",
      "default": "1"
    },
    {
      "name": "meta_json",
      "title": "扩展元数据(JSON 文本，应用层序列化)",
      "type": "text",
      "nullable": "yes"
    },
    {
      "name": "created_at",
      "title": "创建时间(应用层 curDateString 写入)",
      "type": "datetime",
      "nullable": "no",
      "default": "1970-01-01 00:00:00"
    },
    {
      "name": "updated_at",
      "title": "更新时间(应用层 curDateString 写入)",
      "type": "datetime",
      "nullable": "no",
      "default": "1970-01-01 00:00:00"
    }
  ],
  "indexes": [
    {
      "name": "uk_upr_key",
      "idxtype": "unique",
      "idxfields": ["tenant_id", "page_key"]
    },
    {
      "name": "idx_upr_tenant_enabled",
      "idxtype": "index",
      "idxfields": ["tenant_id", "enabled", "page_key"]
    }
  ],
  "codes": []
}