{
  "date": "2026-10-04",
  "runtime": "v24.19.0",
  "app_sha256": "b5b23e8c7028a1ee6ede9b41b459f5213af44661fc42f3d8c07b4a45f99c0644",
  "method": "Synthetic fixtures, not Claude samples. Actual homepage script in minimal DOM. Invisible checkbox on; dash Keep unless matrix says otherwise. Observations are fixture-specific, not general application tests.",
  "rows": [
    {
      "label": "Woman technologist",
      "stage": "direct string",
      "mode": "keep",
      "input": "👩‍💻",
      "output": "👩‍💻",
      "input_codepoints": "U+1F469 U+200D U+1F4BB",
      "output_codepoints": "U+1F469 U+200D U+1F4BB",
      "status": "No selected invisible characters found",
      "before": {
        "codePointCount": 3,
        "utf16Units": 5,
        "joiners": 1
      },
      "after": {
        "codePointCount": 3,
        "utf16Units": 5,
        "joiners": 1
      }
    },
    {
      "label": "Family sequence",
      "stage": "direct string",
      "mode": "keep",
      "input": "👨‍👩‍👧",
      "output": "👨‍👩‍👧",
      "input_codepoints": "U+1F468 U+200D U+1F469 U+200D U+1F467",
      "output_codepoints": "U+1F468 U+200D U+1F469 U+200D U+1F467",
      "status": "No selected invisible characters found",
      "before": {
        "codePointCount": 5,
        "utf16Units": 8,
        "joiners": 2
      },
      "after": {
        "codePointCount": 5,
        "utf16Units": 8,
        "joiners": 2
      }
    },
    {
      "label": "Heart with emoji selector",
      "stage": "direct string",
      "mode": "keep",
      "input": "❤️",
      "output": "❤️",
      "input_codepoints": "U+2764 U+FE0F",
      "output_codepoints": "U+2764 U+FE0F",
      "status": "No selected invisible characters found",
      "before": {
        "codePointCount": 2,
        "utf16Units": 2,
        "joiners": 0
      },
      "after": {
        "codePointCount": 2,
        "utf16Units": 2,
        "joiners": 0
      }
    },
    {
      "label": "England flag tag sequence",
      "stage": "direct string",
      "mode": "keep",
      "input": "🏴󠁧󠁢󠁥󠁮󠁧󠁿",
      "output": "🏴󠁧󠁢󠁥󠁮󠁧󠁿",
      "input_codepoints": "U+1F3F4 U+E0067 U+E0062 U+E0065 U+E006E U+E0067 U+E007F",
      "output_codepoints": "U+1F3F4 U+E0067 U+E0062 U+E0065 U+E006E U+E0067 U+E007F",
      "status": "No selected invisible characters found",
      "before": {
        "codePointCount": 7,
        "utf16Units": 14,
        "joiners": 0
      },
      "after": {
        "codePointCount": 7,
        "utf16Units": 14,
        "joiners": 0
      }
    },
    {
      "label": "Emoji next to stray space",
      "stage": "direct string",
      "mode": "keep",
      "input": "👩‍💻​",
      "output": "👩‍💻",
      "input_codepoints": "U+1F469 U+200D U+1F4BB U+200B",
      "output_codepoints": "U+1F469 U+200D U+1F4BB",
      "status": "Removed 1 invisible character",
      "before": {
        "codePointCount": 4,
        "utf16Units": 6,
        "joiners": 1
      },
      "after": {
        "codePointCount": 3,
        "utf16Units": 5,
        "joiners": 1
      }
    }
  ]
}