{
  "skill_name": "db-migration",
  "skill_version": "1.0.0",
  "evals": [
    {
      "id": 1,
      "kind": "happy_path",
      "prompt": "给 users 表加一个字段，写 migration",
      "expected_output": "给前向+回滚脚本、幂等、大表用在线/分批策略，说明锁表影响",
      "files": []
    },
    {
      "id": 2,
      "kind": "edge_case",
      "prompt": "大表直接 ALTER 加索引，快",
      "expected_output": "拒绝：改用在线 DDL/并发建索引或分批，评估锁表时间",
      "files": []
    },
    {
      "id": 3,
      "kind": "failure_recovery",
      "prompt": "migration 执行失败",
      "expected_output": "按回滚步骤恢复并做数据校验，报告失败阶段",
      "files": []
    }
  ]
}