{
  "schema_version": 1,
  "kind": "table",
  "variant": "grouped",
  "data_kind": "synthetic-demo",
  "source": "组件合成演示，不代表真实测量或推荐",
  "columns": [
    {"id": "plan", "label": "方案"},
    {"id": "use", "label": "适用场景"},
    {"id": "latency", "label": "延迟", "unit": "ms", "format": "one-decimal"},
    {"id": "throughput", "label": "吞吐量", "unit": "次／秒", "format": "integer"},
    {"id": "memory", "label": "内存", "unit": "GB", "format": "one-decimal"},
    {"id": "status", "label": "验证状态"}
  ],
  "rows": [
    ["基础方案", "标准任务", 28.0, 1200, 2.4, "已验证"],
    ["缓存方案", "重复请求", 19.0, 1580, 2.8, "已验证"],
    ["批处理方案", "离线任务", 24.0, 1760, 2.6, "已验证"],
    ["并行方案", "独立子任务", 16.0, 1940, 3.2, "待复核"],
    ["组合方案", "混合负载", 12.0, 2180, 3.4, "已验证"]
  ],
  "column_widths": [168, 264, 168, 200, 144, 208],
  "numeric_columns": [2, 3, 4],
  "column_groups": [
    {"label": "方案信息", "start": 0, "span": 2},
    {"label": "性能表现", "start": 2, "span": 2},
    {"label": "资源", "start": 4, "span": 1},
    {"label": "验证", "start": 5, "span": 1}
  ],
  "row_header_columns": [0],
  "focus_row": 4,
  "focus_meaning": "调用者明确选择关注组合方案，不自动推断推荐或优劣",
  "bars": {"columns": [2, 3, 4]},
  "bar_meaning": "条带从零起算，仅同列比较大小，不表示综合评分或推荐",
  "status": {
    "column": 5,
    "values": {
      "已验证": {"palette_index": "accent3", "shape": "circle"},
      "待复核": {"palette_index": "accent4", "shape": "diamond"}
    }
  }
}