{
  "schema_version": "onchange-editorial-monitoring-v1",
  "kind": "controlled-demonstration",
  "source_sha256": "1463c2859d0406594dce2dc911ad2028aa3f973bf4c37aefe407ad746828b501",
  "captured_at": "2026-10-13T19:26:50.524Z",
  "browser": "155.0.8059.40",
  "platform": "darwin",
  "device_scale_factor": 1,
  "locale": "en-US",
  "timezone": "UTC",
  "reduced_motion": "reduce",
  "method": "Authored local HTML and JSON; real browser interaction and exact byte/DOM comparisons. No OnChange production API, pixel tolerance or customer data.",
  "exclusions": [
    "Screen-reader output",
    "Touch-device or mobile browser emulation",
    "Full accessibility evaluation",
    "Traffic, conversion or ranking measurements",
    "Timing, rotation frequency or statistical false-positive rates"
  ],
  "captures": [
    {
      "id": "banner-before",
      "viewport": "desktop",
      "dimensions": {
        "width": 1440,
        "height": 900
      },
      "captured_at": "2026-10-13T19:26:50.948Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/banner-before.html",
      "fixture_sha256": "18c24c6a4a023ec99a6b8a21ced132feb88ee61e31a20772f149ff5de5d73316",
      "screenshot": "/evidence/monitoring-lab/captures/banner-before-desktop.png",
      "screenshot_sha256": "c5de24f22766c8e7af3aa0c6785df993035358d88ed375d9574334f2d1231f88",
      "full_text": "Fieldnotes\nChoose a workspace\n\nJoin our product workshop this week.\n\nTeam plan\n\n$29 per month\n\nFive seats. USD. Taxes excluded.\n\nChoose Team\nFictional OnChange demonstration. No real offer, purchase or account.",
      "region_text": "Team plan\n\n$29 per month\n\nFive seats. USD. Taxes excluded.\n\nChoose Team",
      "region": {
        "selector": "#team-plan",
        "screenshot": "/evidence/monitoring-lab/captures/banner-before-desktop-region.png",
        "screenshot_sha256": "41d684c8bc0dfc1a607319a57f15480180e071d782f71d54cfa3cf4f3befb28c"
      }
    },
    {
      "id": "banner-rotated",
      "viewport": "desktop",
      "dimensions": {
        "width": 1440,
        "height": 900
      },
      "captured_at": "2026-10-13T19:26:51.236Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/banner-rotated.html",
      "fixture_sha256": "ea1ace9c6080ee4e4c666074053fc5475c4dccf545c130f1e09981f97504bc34",
      "screenshot": "/evidence/monitoring-lab/captures/banner-rotated-desktop.png",
      "screenshot_sha256": "96657289eb527aefdbee38f19552325ce47cc09d3e2299afda5db14e4fb8fba1",
      "full_text": "Fieldnotes\nChoose a workspace\n\nRead our new guide to research notes.\n\nTeam plan\n\n$29 per month\n\nFive seats. USD. Taxes excluded.\n\nChoose Team\nFictional OnChange demonstration. No real offer, purchase or account.",
      "region_text": "Team plan\n\n$29 per month\n\nFive seats. USD. Taxes excluded.\n\nChoose Team",
      "region": {
        "selector": "#team-plan",
        "screenshot": "/evidence/monitoring-lab/captures/banner-rotated-desktop-region.png",
        "screenshot_sha256": "41d684c8bc0dfc1a607319a57f15480180e071d782f71d54cfa3cf4f3befb28c"
      }
    },
    {
      "id": "banner-price-changed",
      "viewport": "desktop",
      "dimensions": {
        "width": 1440,
        "height": 900
      },
      "captured_at": "2026-10-13T19:26:51.475Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/banner-price-changed.html",
      "fixture_sha256": "e424050164384983109fe127764275f3794a8467eb8e63b4207b675b9e4a7116",
      "screenshot": "/evidence/monitoring-lab/captures/banner-price-changed-desktop.png",
      "screenshot_sha256": "a4bb835ee3c9899fb052a3d41e9360db7176ddc1cb713011bc2ccb97d9a66776",
      "full_text": "Fieldnotes\nChoose a workspace\n\nRead our new guide to research notes.\n\nTeam plan\n\n$39 per month\n\nFive seats. USD. Taxes excluded.\n\nChoose Team\nFictional OnChange demonstration. No real offer, purchase or account.",
      "region_text": "Team plan\n\n$39 per month\n\nFive seats. USD. Taxes excluded.\n\nChoose Team",
      "region": {
        "selector": "#team-plan",
        "screenshot": "/evidence/monitoring-lab/captures/banner-price-changed-desktop-region.png",
        "screenshot_sha256": "2fdbd789ad1486e51995f31c59106e15b6e4cf0fd2b090d335a9308c136135e9"
      }
    },
    {
      "id": "selector-before",
      "viewport": "desktop",
      "dimensions": {
        "width": 1440,
        "height": 900
      },
      "captured_at": "2026-10-13T19:26:51.726Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/selector-before.html",
      "fixture_sha256": "6bbd9f3e653ae487cc4c666ba3259c725281f6e78a299e27623a805017dcae37",
      "screenshot": "/evidence/monitoring-lab/captures/selector-before-desktop.png",
      "screenshot_sha256": "79e4079fe6d4b9746b74df9b5f89d741d4814382a685e748a3d26b4c611a326f",
      "selectors": {
        ".products > li:nth-child(1) .price": {
          "matches": 1,
          "values": [
            "$29"
          ]
        },
        "[data-product=\"team\"] .price": {
          "matches": 1,
          "values": [
            "$29"
          ]
        }
      }
    },
    {
      "id": "selector-reordered",
      "viewport": "desktop",
      "dimensions": {
        "width": 1440,
        "height": 900
      },
      "captured_at": "2026-10-13T19:26:51.901Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/selector-reordered.html",
      "fixture_sha256": "fa4d132f0f7c06bf7b7580dfce6149aa998a9c72a8eef51f08ad5a9ca6462a73",
      "screenshot": "/evidence/monitoring-lab/captures/selector-reordered-desktop.png",
      "screenshot_sha256": "492eec2601e56ccc6300dda2f3ae7c8eaea224bf8c55a74069fb2ba7e4c4d921",
      "selectors": {
        ".products > li:nth-child(1) .price": {
          "matches": 1,
          "values": [
            "$9"
          ]
        },
        "[data-product=\"team\"] .price": {
          "matches": 1,
          "values": [
            "$29"
          ]
        }
      }
    },
    {
      "id": "selector-removed",
      "viewport": "desktop",
      "dimensions": {
        "width": 1440,
        "height": 900
      },
      "captured_at": "2026-10-13T19:26:52.094Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/selector-removed.html",
      "fixture_sha256": "cd7aaf09e662eacc087c82e61407b15c105b3d8d01ea1b8280c7d8a9e8d352b4",
      "screenshot": "/evidence/monitoring-lab/captures/selector-removed-desktop.png",
      "screenshot_sha256": "0ba14d0077df9c2ef863d457756be3d781b9542b3edf612434ae13f1a761e385",
      "selectors": {
        ".products > li:nth-child(1) .price": {
          "matches": 1,
          "values": [
            "$9"
          ]
        },
        "[data-product=\"team\"] .price": {
          "matches": 0,
          "values": []
        }
      }
    },
    {
      "id": "mobile-before",
      "viewport": "desktop",
      "dimensions": {
        "width": 1440,
        "height": 900
      },
      "captured_at": "2026-10-13T19:26:52.267Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/mobile-before.html",
      "fixture_sha256": "0c9e87091d5103090b302e71dc918118e8e0e44e4affc9a36ccb43fa780639b5",
      "screenshot": "/evidence/monitoring-lab/captures/mobile-before-desktop.png",
      "screenshot_sha256": "34c27243a131b27e784ca3b8bf9a1b84786deafc3f3dec8218641effb68d9cef",
      "desktop_pricing_visible": true
    },
    {
      "id": "mobile-after",
      "viewport": "desktop",
      "dimensions": {
        "width": 1440,
        "height": 900
      },
      "captured_at": "2026-10-13T19:26:52.430Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/mobile-after.html",
      "fixture_sha256": "8f0ad9e669fd55bc98426e94eca4a02ae710ce48b528b74c94ce229fa184b0f1",
      "screenshot": "/evidence/monitoring-lab/captures/mobile-after-desktop.png",
      "screenshot_sha256": "34c27243a131b27e784ca3b8bf9a1b84786deafc3f3dec8218641effb68d9cef",
      "desktop_pricing_visible": true
    },
    {
      "id": "form-before",
      "viewport": "desktop",
      "dimensions": {
        "width": 1440,
        "height": 900
      },
      "captured_at": "2026-10-13T19:26:52.593Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/form-before.html",
      "fixture_sha256": "5f9e5c751ff31f367641cd750ec4e6582b234493ccf54f202c5121f96ad8d10c",
      "screenshot": "/evidence/monitoring-lab/captures/form-before-desktop.png",
      "screenshot_sha256": "fc0bf65dc86301e640179c3cd12984fa2f36d75a700c35dc2c588deb350923ff",
      "error_state": {
        "aria_invalid": "true",
        "described_by": "email-error",
        "described_text": "Enter an email address such as name@example.com.",
        "focused": true,
        "visible_error": "Enter an email address such as name@example.com.",
        "screenshot": "/evidence/monitoring-lab/captures/form-before-desktop-error.png",
        "screenshot_sha256": "ec8033b35e985c16b61b501c25efadcb2f88748e096b1dca2684da917e59f7f4"
      },
      "recovery": {
        "error_hidden": true,
        "aria_invalid": null,
        "described_by": null,
        "status": "Saved for this demo."
      }
    },
    {
      "id": "form-after",
      "viewport": "desktop",
      "dimensions": {
        "width": 1440,
        "height": 900
      },
      "captured_at": "2026-10-13T19:26:52.959Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/form-after.html",
      "fixture_sha256": "dbd64d81f2ab76cb1cf22ab21897807506524a2b3330ae82d4fb865ef322900e",
      "screenshot": "/evidence/monitoring-lab/captures/form-after-desktop.png",
      "screenshot_sha256": "fc0bf65dc86301e640179c3cd12984fa2f36d75a700c35dc2c588deb350923ff",
      "error_state": {
        "aria_invalid": null,
        "described_by": null,
        "described_text": "",
        "focused": true,
        "visible_error": "Enter an email address such as name@example.com.",
        "screenshot": "/evidence/monitoring-lab/captures/form-after-desktop-error.png",
        "screenshot_sha256": "ec8033b35e985c16b61b501c25efadcb2f88748e096b1dca2684da917e59f7f4"
      },
      "recovery": {
        "error_hidden": true,
        "aria_invalid": null,
        "described_by": null,
        "status": "Saved for this demo."
      }
    },
    {
      "id": "banner-before",
      "viewport": "mobile",
      "dimensions": {
        "width": 390,
        "height": 844
      },
      "captured_at": "2026-10-13T19:26:53.329Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/banner-before.html",
      "fixture_sha256": "18c24c6a4a023ec99a6b8a21ced132feb88ee61e31a20772f149ff5de5d73316",
      "screenshot": "/evidence/monitoring-lab/captures/banner-before-mobile.png",
      "screenshot_sha256": "8b30c198cb8978979bb02856a4f77e62574b5aacb338648c3f3d6516d9eba942",
      "full_text": "Fieldnotes\nChoose a workspace\n\nJoin our product workshop this week.\n\nTeam plan\n\n$29 per month\n\nFive seats. USD. Taxes excluded.\n\nChoose Team\nFictional OnChange demonstration. No real offer, purchase or account.",
      "region_text": "Team plan\n\n$29 per month\n\nFive seats. USD. Taxes excluded.\n\nChoose Team",
      "region": {
        "selector": "#team-plan",
        "screenshot": "/evidence/monitoring-lab/captures/banner-before-mobile-region.png",
        "screenshot_sha256": "b2bae6a81351c67337ea45456b3cdaaab894b581b2f50fb1145183bcd188f2ee"
      }
    },
    {
      "id": "banner-rotated",
      "viewport": "mobile",
      "dimensions": {
        "width": 390,
        "height": 844
      },
      "captured_at": "2026-10-13T19:26:53.570Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/banner-rotated.html",
      "fixture_sha256": "ea1ace9c6080ee4e4c666074053fc5475c4dccf545c130f1e09981f97504bc34",
      "screenshot": "/evidence/monitoring-lab/captures/banner-rotated-mobile.png",
      "screenshot_sha256": "f18053a2df073d65b76a8fa51d0cb576f73b79f79ce0fe7d602bea68292e061b",
      "full_text": "Fieldnotes\nChoose a workspace\n\nRead our new guide to research notes.\n\nTeam plan\n\n$29 per month\n\nFive seats. USD. Taxes excluded.\n\nChoose Team\nFictional OnChange demonstration. No real offer, purchase or account.",
      "region_text": "Team plan\n\n$29 per month\n\nFive seats. USD. Taxes excluded.\n\nChoose Team",
      "region": {
        "selector": "#team-plan",
        "screenshot": "/evidence/monitoring-lab/captures/banner-rotated-mobile-region.png",
        "screenshot_sha256": "b2bae6a81351c67337ea45456b3cdaaab894b581b2f50fb1145183bcd188f2ee"
      }
    },
    {
      "id": "banner-price-changed",
      "viewport": "mobile",
      "dimensions": {
        "width": 390,
        "height": 844
      },
      "captured_at": "2026-10-13T19:26:53.816Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/banner-price-changed.html",
      "fixture_sha256": "e424050164384983109fe127764275f3794a8467eb8e63b4207b675b9e4a7116",
      "screenshot": "/evidence/monitoring-lab/captures/banner-price-changed-mobile.png",
      "screenshot_sha256": "261c12429821eb6c41948a4b0ab581f1a7b425e8809b3178fc316d35b3bbb55e",
      "full_text": "Fieldnotes\nChoose a workspace\n\nRead our new guide to research notes.\n\nTeam plan\n\n$39 per month\n\nFive seats. USD. Taxes excluded.\n\nChoose Team\nFictional OnChange demonstration. No real offer, purchase or account.",
      "region_text": "Team plan\n\n$39 per month\n\nFive seats. USD. Taxes excluded.\n\nChoose Team",
      "region": {
        "selector": "#team-plan",
        "screenshot": "/evidence/monitoring-lab/captures/banner-price-changed-mobile-region.png",
        "screenshot_sha256": "2e63966d9a0a0f09e4de36ba6df4ea7f5928a4f14e05b29f7f55c1ed1eda5517"
      }
    },
    {
      "id": "selector-before",
      "viewport": "mobile",
      "dimensions": {
        "width": 390,
        "height": 844
      },
      "captured_at": "2026-10-13T19:26:54.052Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/selector-before.html",
      "fixture_sha256": "6bbd9f3e653ae487cc4c666ba3259c725281f6e78a299e27623a805017dcae37",
      "screenshot": "/evidence/monitoring-lab/captures/selector-before-mobile.png",
      "screenshot_sha256": "2018591f8c5fbee5448d9b86313f2703e3aa70bf5adf5bfca8b190e9f9d29e02",
      "selectors": {
        ".products > li:nth-child(1) .price": {
          "matches": 1,
          "values": [
            "$29"
          ]
        },
        "[data-product=\"team\"] .price": {
          "matches": 1,
          "values": [
            "$29"
          ]
        }
      }
    },
    {
      "id": "selector-reordered",
      "viewport": "mobile",
      "dimensions": {
        "width": 390,
        "height": 844
      },
      "captured_at": "2026-10-13T19:26:54.237Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/selector-reordered.html",
      "fixture_sha256": "fa4d132f0f7c06bf7b7580dfce6149aa998a9c72a8eef51f08ad5a9ca6462a73",
      "screenshot": "/evidence/monitoring-lab/captures/selector-reordered-mobile.png",
      "screenshot_sha256": "0516f654118a2a15637904cf22c00053e4598e53e58d8a2d74426b453dacdad9",
      "selectors": {
        ".products > li:nth-child(1) .price": {
          "matches": 1,
          "values": [
            "$9"
          ]
        },
        "[data-product=\"team\"] .price": {
          "matches": 1,
          "values": [
            "$29"
          ]
        }
      }
    },
    {
      "id": "selector-removed",
      "viewport": "mobile",
      "dimensions": {
        "width": 390,
        "height": 844
      },
      "captured_at": "2026-10-13T19:26:54.418Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/selector-removed.html",
      "fixture_sha256": "cd7aaf09e662eacc087c82e61407b15c105b3d8d01ea1b8280c7d8a9e8d352b4",
      "screenshot": "/evidence/monitoring-lab/captures/selector-removed-mobile.png",
      "screenshot_sha256": "775dc3093d218890ea2d6ba63f4b03d378fe45ad89868c201402e66e781dc910",
      "selectors": {
        ".products > li:nth-child(1) .price": {
          "matches": 1,
          "values": [
            "$9"
          ]
        },
        "[data-product=\"team\"] .price": {
          "matches": 0,
          "values": []
        }
      }
    },
    {
      "id": "mobile-before",
      "viewport": "mobile",
      "dimensions": {
        "width": 390,
        "height": 844
      },
      "captured_at": "2026-10-13T19:26:54.605Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/mobile-before.html",
      "fixture_sha256": "0c9e87091d5103090b302e71dc918118e8e0e44e4affc9a36ccb43fa780639b5",
      "screenshot": "/evidence/monitoring-lab/captures/mobile-before-mobile.png",
      "screenshot_sha256": "168b32d04243e53bec71e947a87515c017fd3ed41ba28cbf369819cfc5023081",
      "desktop_pricing_visible": false,
      "open_menu": {
        "expanded": "true",
        "pricing_links": 1,
        "screenshot": "/evidence/monitoring-lab/captures/mobile-before-mobile-open.png",
        "screenshot_sha256": "0e880fc83a39fbff12741085b7447d4aac5003e05ad145bd60215c7a519601c1"
      }
    },
    {
      "id": "mobile-after",
      "viewport": "mobile",
      "dimensions": {
        "width": 390,
        "height": 844
      },
      "captured_at": "2026-10-13T19:26:54.845Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/mobile-after.html",
      "fixture_sha256": "8f0ad9e669fd55bc98426e94eca4a02ae710ce48b528b74c94ce229fa184b0f1",
      "screenshot": "/evidence/monitoring-lab/captures/mobile-after-mobile.png",
      "screenshot_sha256": "168b32d04243e53bec71e947a87515c017fd3ed41ba28cbf369819cfc5023081",
      "desktop_pricing_visible": false,
      "open_menu": {
        "expanded": "true",
        "pricing_links": 0,
        "screenshot": "/evidence/monitoring-lab/captures/mobile-after-mobile-open.png",
        "screenshot_sha256": "da5b34f8fef299229d41060d8aa3df12ab1e7ccab8b8566e46d38df7dfaeab7a"
      }
    },
    {
      "id": "form-before",
      "viewport": "mobile",
      "dimensions": {
        "width": 390,
        "height": 844
      },
      "captured_at": "2026-10-13T19:26:55.079Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/form-before.html",
      "fixture_sha256": "5f9e5c751ff31f367641cd750ec4e6582b234493ccf54f202c5121f96ad8d10c",
      "screenshot": "/evidence/monitoring-lab/captures/form-before-mobile.png",
      "screenshot_sha256": "017228eb4bfd7f94639da021c1db6392c7026ee4d4aee0eea763145d72e10c46",
      "error_state": {
        "aria_invalid": "true",
        "described_by": "email-error",
        "described_text": "Enter an email address such as name@example.com.",
        "focused": true,
        "visible_error": "Enter an email address such as name@example.com.",
        "screenshot": "/evidence/monitoring-lab/captures/form-before-mobile-error.png",
        "screenshot_sha256": "5d0291cd2e6b0bd3f08f191f46e4769b1cd8c1bb8ae1cab0a351a960d2aa8659"
      },
      "recovery": {
        "error_hidden": true,
        "aria_invalid": null,
        "described_by": null,
        "status": "Saved for this demo."
      }
    },
    {
      "id": "form-after",
      "viewport": "mobile",
      "dimensions": {
        "width": 390,
        "height": 844
      },
      "captured_at": "2026-10-13T19:26:55.361Z",
      "http_status": 200,
      "fixture": "/evidence/fixtures/monitoring/form-after.html",
      "fixture_sha256": "dbd64d81f2ab76cb1cf22ab21897807506524a2b3330ae82d4fb865ef322900e",
      "screenshot": "/evidence/monitoring-lab/captures/form-after-mobile.png",
      "screenshot_sha256": "017228eb4bfd7f94639da021c1db6392c7026ee4d4aee0eea763145d72e10c46",
      "error_state": {
        "aria_invalid": null,
        "described_by": null,
        "described_text": "",
        "focused": true,
        "visible_error": "Enter an email address such as name@example.com.",
        "screenshot": "/evidence/monitoring-lab/captures/form-after-mobile-error.png",
        "screenshot_sha256": "5d0291cd2e6b0bd3f08f191f46e4769b1cd8c1bb8ae1cab0a351a960d2aa8659"
      },
      "recovery": {
        "error_hidden": true,
        "aria_invalid": null,
        "described_by": null,
        "status": "Saved for this demo."
      }
    }
  ],
  "api_cases": [
    {
      "id": "value",
      "response": {
        "id": "team",
        "price": 29,
        "billingPeriod": "month"
      },
      "has_billing_period": true,
      "state": "value",
      "passes_demo_contract": true
    },
    {
      "id": "null",
      "response": {
        "id": "team",
        "price": 29,
        "billingPeriod": null
      },
      "has_billing_period": true,
      "state": "null",
      "passes_demo_contract": false
    },
    {
      "id": "missing",
      "response": {
        "id": "team",
        "price": 29
      },
      "has_billing_period": false,
      "state": "missing",
      "passes_demo_contract": false
    },
    {
      "id": "empty-string",
      "response": {
        "id": "team",
        "price": 29,
        "billingPeriod": ""
      },
      "has_billing_period": true,
      "state": "empty-string",
      "passes_demo_contract": false
    }
  ],
  "assertions": {
    "banner_changes_full_page": "passed",
    "region_ignores_banner_only": "passed",
    "region_retains_price_change": "passed",
    "positional_selector_changes_product": "passed",
    "identity_selector_retains_product": "passed",
    "removed_target_is_missing": "passed",
    "desktop_misses_mobile_menu_change": "passed",
    "closed_mobile_menu_misses_change": "passed",
    "opened_menu_exposes_missing_link": "passed",
    "identical_error_screenshots_different_associations": "passed",
    "form_recovery_clears_error_state": "passed",
    "null_missing_empty_are_distinct": "passed"
  },
  "completed_at": "2026-10-13T19:26:55.570Z"
}