{
  "date": "2026-10-09",
  "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": "Marked hex",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "41​42",
      "output": "4142",
      "input_codepoints": "U+0034 U+0031 U+200B U+0034 U+0032",
      "output_codepoints": "U+0034 U+0031 U+0034 U+0032",
      "status": "Removed 1 invisible character",
      "before": {
        "decodedHex": "41",
        "byteLength": 1,
        "ascii": "A",
        "completeHexPairs": false
      },
      "after": {
        "decodedHex": "4142",
        "byteLength": 2,
        "ascii": "AB",
        "completeHexPairs": true
      }
    },
    {
      "label": "Invalid visible letter",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "41Z42",
      "output": "41Z42",
      "input_codepoints": "U+0034 U+0031 U+005A U+0034 U+0032",
      "output_codepoints": "U+0034 U+0031 U+005A U+0034 U+0032",
      "status": "No selected invisible characters found",
      "before": {
        "decodedHex": "41",
        "byteLength": 1,
        "ascii": "A",
        "completeHexPairs": false
      },
      "after": {
        "decodedHex": "41",
        "byteLength": 1,
        "ascii": "A",
        "completeHexPairs": false
      }
    },
    {
      "label": "Odd nibble count",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "414",
      "output": "414",
      "input_codepoints": "U+0034 U+0031 U+0034",
      "output_codepoints": "U+0034 U+0031 U+0034",
      "status": "No selected invisible characters found",
      "before": {
        "decodedHex": "41",
        "byteLength": 1,
        "ascii": "A",
        "completeHexPairs": false
      },
      "after": {
        "decodedHex": "41",
        "byteLength": 1,
        "ascii": "A",
        "completeHexPairs": false
      }
    },
    {
      "label": "Complete reference",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "4142",
      "output": "4142",
      "input_codepoints": "U+0034 U+0031 U+0034 U+0032",
      "output_codepoints": "U+0034 U+0031 U+0034 U+0032",
      "status": "No selected invisible characters found",
      "before": {
        "decodedHex": "4142",
        "byteLength": 2,
        "ascii": "AB",
        "completeHexPairs": true
      },
      "after": {
        "decodedHex": "4142",
        "byteLength": 2,
        "ascii": "AB",
        "completeHexPairs": true
      }
    }
  ]
}