{
  "name": "rules/unique-three-same",
  "why": "§4 unique: every repeat after the first is flagged (3 equal values → rows 3 and 4)",
  "rules": {
    "columns": [
      {
        "key": "v",
        "unique": true
      }
    ]
  },
  "rows": [
    {
      "v": "a"
    },
    {
      "v": "a"
    },
    {
      "v": "a"
    }
  ],
  "expect": {
    "ok": false,
    "errors": [
      {
        "row": 3,
        "key": "v",
        "code": "CELL_UNIQUE"
      },
      {
        "row": 4,
        "key": "v",
        "code": "CELL_UNIQUE"
      }
    ],
    "warnings": [],
    "rows": [
      {
        "$row": 2,
        "v": "a"
      },
      {
        "$row": 3,
        "v": "a"
      },
      {
        "$row": 4,
        "v": "a"
      }
    ]
  }
}