{
  "date": "2026-10-11",
  "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 time zone",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "U​TC",
      "output": "UTC",
      "input_codepoints": "U+0055 U+200B U+0054 U+0043",
      "output_codepoints": "U+0055 U+0054 U+0043",
      "status": "Removed 1 invisible character",
      "before": {
        "accepted": false,
        "errorName": "RangeError"
      },
      "after": {
        "accepted": true,
        "resolvedTimeZone": "UTC",
        "formatted": "01/01/2026, 00"
      }
    },
    {
      "label": "Plain UTC",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "UTC",
      "output": "UTC",
      "input_codepoints": "U+0055 U+0054 U+0043",
      "output_codepoints": "U+0055 U+0054 U+0043",
      "status": "No selected invisible characters found",
      "before": {
        "accepted": true,
        "resolvedTimeZone": "UTC",
        "formatted": "01/01/2026, 00"
      },
      "after": {
        "accepted": true,
        "resolvedTimeZone": "UTC",
        "formatted": "01/01/2026, 00"
      }
    },
    {
      "label": "Named time zone",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "America/New_York",
      "output": "America/New_York",
      "input_codepoints": "U+0041 U+006D U+0065 U+0072 U+0069 U+0063 U+0061 U+002F U+004E U+0065 U+0077 U+005F U+0059 U+006F U+0072 U+006B",
      "output_codepoints": "U+0041 U+006D U+0065 U+0072 U+0069 U+0063 U+0061 U+002F U+004E U+0065 U+0077 U+005F U+0059 U+006F U+0072 U+006B",
      "status": "No selected invisible characters found",
      "before": {
        "accepted": true,
        "resolvedTimeZone": "America/New_York",
        "formatted": "12/31/2025, 19"
      },
      "after": {
        "accepted": true,
        "resolvedTimeZone": "America/New_York",
        "formatted": "12/31/2025, 19"
      }
    },
    {
      "label": "Unknown zone",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "Mars/Olympus",
      "output": "Mars/Olympus",
      "input_codepoints": "U+004D U+0061 U+0072 U+0073 U+002F U+004F U+006C U+0079 U+006D U+0070 U+0075 U+0073",
      "output_codepoints": "U+004D U+0061 U+0072 U+0073 U+002F U+004F U+006C U+0079 U+006D U+0070 U+0075 U+0073",
      "status": "No selected invisible characters found",
      "before": {
        "accepted": false,
        "errorName": "RangeError"
      },
      "after": {
        "accepted": false,
        "errorName": "RangeError"
      }
    }
  ]
}