{
  "date": "2026-10-13",
  "runtime": "v24.19.0",
  "versions": {
    "node": "24.19.0",
    "acorn": "8.17.0",
    "ada": "3.4.4",
    "amaro": "1.1.10",
    "ares": "1.34.6",
    "brotli": "1.2.0",
    "cldr": "48.0",
    "icu": "78.3",
    "llhttp": "9.4.3",
    "merve": "1.2.2",
    "modules": "137",
    "napi": "10",
    "nbytes": "0.1.4",
    "ncrypto": "0.0.1",
    "nghttp2": "1.69.0",
    "nghttp3": "",
    "ngtcp2": "",
    "openssl": "3.5.7",
    "simdjson": "4.6.4",
    "simdutf": "6.4.0",
    "sqlite": "3.53.3",
    "tz": "2026b",
    "undici": "7.29.0",
    "unicode": "17.0",
    "uv": "1.52.1",
    "uvwasi": "0.0.23",
    "v8": "13.6.233.17-node.51",
    "zlib": "1.3.2.1-motley-3246f1b",
    "zstd": "1.5.7"
  },
  "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 pathname",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "/a​b?x=1#frag",
      "output": "/ab?x=1#frag",
      "input_codepoints": "U+002F U+0061 U+200B U+0062 U+003F U+0078 U+003D U+0031 U+0023 U+0066 U+0072 U+0061 U+0067",
      "output_codepoints": "U+002F U+0061 U+0062 U+003F U+0078 U+003D U+0031 U+0023 U+0066 U+0072 U+0061 U+0067",
      "status": "Removed 1 invisible character",
      "before": {
        "setter": {
          "pathname": "/a%E2%80%8Bb%3Fx=1%23frag",
          "search": "?keep=1",
          "hash": "#old",
          "href": "https://example.com/a%E2%80%8Bb%3Fx=1%23frag?keep=1#old"
        },
        "constructor": {
          "pathname": "/a%E2%80%8Bb",
          "search": "?x=1",
          "hash": "#frag",
          "href": "https://example.com/a%E2%80%8Bb?x=1#frag"
        }
      },
      "after": {
        "setter": {
          "pathname": "/ab%3Fx=1%23frag",
          "search": "?keep=1",
          "hash": "#old",
          "href": "https://example.com/ab%3Fx=1%23frag?keep=1#old"
        },
        "constructor": {
          "pathname": "/ab",
          "search": "?x=1",
          "hash": "#frag",
          "href": "https://example.com/ab?x=1#frag"
        }
      }
    },
    {
      "label": "Plain delimiters",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "/ab?x=1#frag",
      "output": "/ab?x=1#frag",
      "input_codepoints": "U+002F U+0061 U+0062 U+003F U+0078 U+003D U+0031 U+0023 U+0066 U+0072 U+0061 U+0067",
      "output_codepoints": "U+002F U+0061 U+0062 U+003F U+0078 U+003D U+0031 U+0023 U+0066 U+0072 U+0061 U+0067",
      "status": "No selected invisible characters found",
      "before": {
        "setter": {
          "pathname": "/ab%3Fx=1%23frag",
          "search": "?keep=1",
          "hash": "#old",
          "href": "https://example.com/ab%3Fx=1%23frag?keep=1#old"
        },
        "constructor": {
          "pathname": "/ab",
          "search": "?x=1",
          "hash": "#frag",
          "href": "https://example.com/ab?x=1#frag"
        }
      },
      "after": {
        "setter": {
          "pathname": "/ab%3Fx=1%23frag",
          "search": "?keep=1",
          "hash": "#old",
          "href": "https://example.com/ab%3Fx=1%23frag?keep=1#old"
        },
        "constructor": {
          "pathname": "/ab",
          "search": "?x=1",
          "hash": "#frag",
          "href": "https://example.com/ab?x=1#frag"
        }
      }
    },
    {
      "label": "Encoded question mark",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "/ab%3Fx=1",
      "output": "/ab%3Fx=1",
      "input_codepoints": "U+002F U+0061 U+0062 U+0025 U+0033 U+0046 U+0078 U+003D U+0031",
      "output_codepoints": "U+002F U+0061 U+0062 U+0025 U+0033 U+0046 U+0078 U+003D U+0031",
      "status": "No selected invisible characters found",
      "before": {
        "setter": {
          "pathname": "/ab%3Fx=1",
          "search": "?keep=1",
          "hash": "#old",
          "href": "https://example.com/ab%3Fx=1?keep=1#old"
        },
        "constructor": {
          "pathname": "/ab%3Fx=1",
          "search": "",
          "hash": "",
          "href": "https://example.com/ab%3Fx=1"
        }
      },
      "after": {
        "setter": {
          "pathname": "/ab%3Fx=1",
          "search": "?keep=1",
          "hash": "#old",
          "href": "https://example.com/ab%3Fx=1?keep=1#old"
        },
        "constructor": {
          "pathname": "/ab%3Fx=1",
          "search": "",
          "hash": "",
          "href": "https://example.com/ab%3Fx=1"
        }
      }
    },
    {
      "label": "Simple pathname",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "/ab",
      "output": "/ab",
      "input_codepoints": "U+002F U+0061 U+0062",
      "output_codepoints": "U+002F U+0061 U+0062",
      "status": "No selected invisible characters found",
      "before": {
        "setter": {
          "pathname": "/ab",
          "search": "?keep=1",
          "hash": "#old",
          "href": "https://example.com/ab?keep=1#old"
        },
        "constructor": {
          "pathname": "/ab",
          "search": "",
          "hash": "",
          "href": "https://example.com/ab"
        }
      },
      "after": {
        "setter": {
          "pathname": "/ab",
          "search": "?keep=1",
          "hash": "#old",
          "href": "https://example.com/ab?keep=1#old"
        },
        "constructor": {
          "pathname": "/ab",
          "search": "",
          "hash": "",
          "href": "https://example.com/ab"
        }
      }
    }
  ]
}