{
  "date": "2026-10-24",
  "runtime": "v24.22.1",
  "versions": {
    "node": "24.22.1",
    "acorn": "8.18.0",
    "ada": "4.0.0",
    "amaro": "1.1.11",
    "ares": "1.34.9",
    "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": "1.70.0",
    "nghttp3": "",
    "ngtcp2": "",
    "openssl": "3.5.9",
    "simdjson": "4.6.11",
    "simdutf": "6.4.0",
    "sqlite": "3.53.4",
    "tz": "2026e",
    "undici": "7.30.1",
    "unicode": "17.0",
    "uv": "1.52.1",
    "uvwasi": "0.0.23",
    "v8": "13.6.233.17-node.58",
    "zlib": "1.3.2.1-motley-285e94b",
    "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 duplicate key",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "tag=A&ta​g=B",
      "output": "tag=A&tag=B",
      "input_codepoints": "U+0074 U+0061 U+0067 U+003D U+0041 U+0026 U+0074 U+0061 U+200B U+0067 U+003D U+0042",
      "output_codepoints": "U+0074 U+0061 U+0067 U+003D U+0041 U+0026 U+0074 U+0061 U+0067 U+003D U+0042",
      "status": "Removed 1 invisible character",
      "before": {
        "entries": [
          [
            "tag",
            "A"
          ],
          [
            "ta​g",
            "B"
          ]
        ],
        "get": "A",
        "getAll": [
          "A"
        ],
        "object": {
          "tag": "A",
          "ta​g": "B"
        }
      },
      "after": {
        "entries": [
          [
            "tag",
            "A"
          ],
          [
            "tag",
            "B"
          ]
        ],
        "get": "A",
        "getAll": [
          "A",
          "B"
        ],
        "object": {
          "tag": "B"
        }
      }
    },
    {
      "label": "Plain duplicate key",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "tag=A&tag=B",
      "output": "tag=A&tag=B",
      "input_codepoints": "U+0074 U+0061 U+0067 U+003D U+0041 U+0026 U+0074 U+0061 U+0067 U+003D U+0042",
      "output_codepoints": "U+0074 U+0061 U+0067 U+003D U+0041 U+0026 U+0074 U+0061 U+0067 U+003D U+0042",
      "status": "No selected invisible characters found",
      "before": {
        "entries": [
          [
            "tag",
            "A"
          ],
          [
            "tag",
            "B"
          ]
        ],
        "get": "A",
        "getAll": [
          "A",
          "B"
        ],
        "object": {
          "tag": "B"
        }
      },
      "after": {
        "entries": [
          [
            "tag",
            "A"
          ],
          [
            "tag",
            "B"
          ]
        ],
        "get": "A",
        "getAll": [
          "A",
          "B"
        ],
        "object": {
          "tag": "B"
        }
      }
    },
    {
      "label": "Single key",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "tag=A",
      "output": "tag=A",
      "input_codepoints": "U+0074 U+0061 U+0067 U+003D U+0041",
      "output_codepoints": "U+0074 U+0061 U+0067 U+003D U+0041",
      "status": "No selected invisible characters found",
      "before": {
        "entries": [
          [
            "tag",
            "A"
          ]
        ],
        "get": "A",
        "getAll": [
          "A"
        ],
        "object": {
          "tag": "A"
        }
      },
      "after": {
        "entries": [
          [
            "tag",
            "A"
          ]
        ],
        "get": "A",
        "getAll": [
          "A"
        ],
        "object": {
          "tag": "A"
        }
      }
    },
    {
      "label": "Empty first value",
      "stage": "direct string",
      "mode": "keep",
      "enabled": true,
      "input": "tag=&tag=B",
      "output": "tag=&tag=B",
      "input_codepoints": "U+0074 U+0061 U+0067 U+003D U+0026 U+0074 U+0061 U+0067 U+003D U+0042",
      "output_codepoints": "U+0074 U+0061 U+0067 U+003D U+0026 U+0074 U+0061 U+0067 U+003D U+0042",
      "status": "No selected invisible characters found",
      "before": {
        "entries": [
          [
            "tag",
            ""
          ],
          [
            "tag",
            "B"
          ]
        ],
        "get": "",
        "getAll": [
          "",
          "B"
        ],
        "object": {
          "tag": "B"
        }
      },
      "after": {
        "entries": [
          [
            "tag",
            ""
          ],
          [
            "tag",
            "B"
          ]
        ],
        "get": "",
        "getAll": [
          "",
          "B"
        ],
        "object": {
          "tag": "B"
        }
      }
    }
  ]
}