{
  "date": "2026-10-08",
  "runtime": "v24.19.0",
  "app_sha256": "b5b23e8c7028a1ee6ede9b41b459f5213af44661fc42f3d8c07b4a45f99c0644",
  "method": "Synthetic fixtures, not Claude samples. Actual homepage script in minimal DOM. Checkbox state and dash mode recorded in each row. Observations are fixture-specific, not general application tests.",
  "rows": [
    {
      "label": "Interior empty field",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "A\t\tB",
      "output": "A\t\tB",
      "input_codepoints": "U+0041 U+0009 U+0009 U+0042",
      "output_codepoints": "U+0041 U+0009 U+0009 U+0042",
      "status": "No selected invisible characters found",
      "before": {
        "fields": [
          "A",
          "",
          "B"
        ],
        "columns": 3
      },
      "after": {
        "fields": [
          "A",
          "",
          "B"
        ],
        "columns": 3
      }
    },
    {
      "label": "Trailing empty field",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "A\tB\t",
      "output": "A\tB\t",
      "input_codepoints": "U+0041 U+0009 U+0042 U+0009",
      "output_codepoints": "U+0041 U+0009 U+0042 U+0009",
      "status": "No selected invisible characters found",
      "before": {
        "fields": [
          "A",
          "B",
          ""
        ],
        "columns": 3
      },
      "after": {
        "fields": [
          "A",
          "B",
          ""
        ],
        "columns": 3
      }
    },
    {
      "label": "Marker inside field",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "A​B\tC",
      "output": "AB\tC",
      "input_codepoints": "U+0041 U+200B U+0042 U+0009 U+0043",
      "output_codepoints": "U+0041 U+0042 U+0009 U+0043",
      "status": "Removed 1 invisible character",
      "before": {
        "fields": [
          "A​B",
          "C"
        ],
        "columns": 2
      },
      "after": {
        "fields": [
          "AB",
          "C"
        ],
        "columns": 2
      }
    },
    {
      "label": "Space instead of tab",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "A B\tC",
      "output": "A B\tC",
      "input_codepoints": "U+0041 U+0020 U+0042 U+0009 U+0043",
      "output_codepoints": "U+0041 U+0020 U+0042 U+0009 U+0043",
      "status": "No selected invisible characters found",
      "before": {
        "fields": [
          "A B",
          "C"
        ],
        "columns": 2
      },
      "after": {
        "fields": [
          "A B",
          "C"
        ],
        "columns": 2
      }
    }
  ]
}