{
  "tasks": [
    {
      "branch": "lesson/filter",
      "file": "filter.py",
      "goal": "按分类筛选库存，保留未知分类空结果"
    },
    {
      "branch": "lesson/import-preview",
      "file": "import_preview.py",
      "goal": "显示两条有效导入与一条缺SKU错误"
    }
  ],
  "rows": [
    {
      "id": "K01",
      "category": "展陈"
    },
    {
      "id": "K02",
      "category": "影音"
    }
  ]
}