diff --git a/package.json b/package.json
index 7c3ad3b2b..5b5e73652 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "ci:build": "yarn build:types && yarn build all && yarn build:i18n && yarn build:ts && yarn build:docs && yarn test:imports",
     "test:imports": "node --test test/esm.test.js test/i18n.test.js test/ssr.test.js",
     "typecheck": "node scripts/typecheck.mjs",
-    "test:unit": "node --test test/mediabunny.test.js test/mediabunny-shim.test.js test/mediabunny-coordination.test.js test/mediabunny-video.test.js test/mediabunny-audio.test.js test/mediabunny-hls.test.js test/mediabunny-entry.test.js test/mediabunny-capability.test.js test/mediabunny-load.test.js test/mediabunny-input.test.js test/dpip.test.js test/dpip-lifecycle.test.js test/canvas.test.js test/canvas-lifecycle.test.js test/ambilight.test.js test/ambilight-lifecycle.test.js test/ambilight-proxy.test.js test/vast.test.js test/vast-lifecycle.test.js test/ads.test.js test/ads-lifecycle.test.js test/playback.test.js test/dash-control.test.js test/dash-contract.test.js test/dash-lifecycle.test.js test/dash-events.test.js test/hls-control.test.js test/audio-track.test.js test/public-behavior.test.js test/helpers.test.js test/chapter.test.js test/utils.test.js test/resource-scope.test.js test/instance-lifecycle.test.js test/options.test.js test/media-hosts.test.js test/plugins.test.js test/source.test.js test/playback-properties.test.js test/media-events.test.js test/template-resources.test.js test/core-vendor.test.js test/component-resources.test.js test/setting-model.test.js test/setting-layout.test.js test/setting-resources.test.js test/subtitle.test.js test/display-native.test.js test/display-video-fullscreen.test.js test/display-pip.test.js test/display-mini.test.js test/display-sizing.test.js test/display-orientation.test.js test/hotkey.test.js test/listener-registry.test.js test/global-events.test.js test/pointer-events.test.js test/gesture.test.js test/event-scheduling.test.js test/notice.test.js test/fast-forward.test.js test/auto-playback.test.js test/builtin-layers.test.js test/prompt-components.test.js test/screenshot.test.js test/thumbnails.test.js test/progress.test.js test/environment.test.js test/storage.test.js test/facade-properties.test.js test/dom-boundaries.test.js test/initialization.test.js test/entry.test.js test/accessibility-button.test.js test/accessibility-focus.test.js test/accessibility-slider.test.js",
+    "test:unit": "node --test test/iframe.test.js test/mediabunny.test.js test/mediabunny-shim.test.js test/mediabunny-coordination.test.js test/mediabunny-video.test.js test/mediabunny-audio.test.js test/mediabunny-hls.test.js test/mediabunny-entry.test.js test/mediabunny-capability.test.js test/mediabunny-load.test.js test/mediabunny-input.test.js test/dpip.test.js test/dpip-lifecycle.test.js test/canvas.test.js test/canvas-lifecycle.test.js test/ambilight.test.js test/ambilight-lifecycle.test.js test/ambilight-proxy.test.js test/vast.test.js test/vast-lifecycle.test.js test/ads.test.js test/ads-lifecycle.test.js test/playback.test.js test/dash-control.test.js test/dash-contract.test.js test/dash-lifecycle.test.js test/dash-events.test.js test/hls-control.test.js test/audio-track.test.js test/public-behavior.test.js test/helpers.test.js test/chapter.test.js test/utils.test.js test/resource-scope.test.js test/instance-lifecycle.test.js test/options.test.js test/media-hosts.test.js test/plugins.test.js test/source.test.js test/playback-properties.test.js test/media-events.test.js test/template-resources.test.js test/core-vendor.test.js test/component-resources.test.js test/setting-model.test.js test/setting-layout.test.js test/setting-resources.test.js test/subtitle.test.js test/display-native.test.js test/display-video-fullscreen.test.js test/display-pip.test.js test/display-mini.test.js test/display-sizing.test.js test/display-orientation.test.js test/hotkey.test.js test/listener-registry.test.js test/global-events.test.js test/pointer-events.test.js test/gesture.test.js test/event-scheduling.test.js test/notice.test.js test/fast-forward.test.js test/auto-playback.test.js test/builtin-layers.test.js test/prompt-components.test.js test/screenshot.test.js test/thumbnails.test.js test/progress.test.js test/environment.test.js test/storage.test.js test/facade-properties.test.js test/dom-boundaries.test.js test/initialization.test.js test/entry.test.js test/accessibility-button.test.js test/accessibility-focus.test.js test/accessibility-slider.test.js",
     "test:coverage": "node --test test/coverage.test.js && node scripts/coverage.mjs",
     "test": "yarn test:node && yarn test:baseline",
     "test:browser": "playwright test",
@@ -79,7 +79,8 @@
     "test:mediabunny": "node --test test/mediabunny.test.js test/mediabunny-shim.test.js test/mediabunny-coordination.test.js test/mediabunny-video.test.js test/mediabunny-audio.test.js test/mediabunny-hls.test.js test/mediabunny-entry.test.js test/mediabunny-capability.test.js test/mediabunny-load.test.js test/mediabunny-input.test.js",
     "test:mediabunny-types-package": "node refactor/scripts/mb-package-types.mjs",
     "test:mediabunny-soak": "playwright test --config playwright.soak.config.js",
-    "generate:media:hls": "node scripts/generate-hls-fixture.mjs"
+    "generate:media:hls": "node scripts/generate-hls-fixture.mjs",
+    "test:iframe": "node --test test/iframe.test.js refactor/scripts/iframe-contract.test.mjs"
   },
   "browserslist": "last 1 Chrome version",
   "devDependencies": {
diff --git a/refactor/baselines/iframe-behavior-validation.json b/refactor/baselines/iframe-behavior-validation.json
new file mode 100644
index 000000000..ee734fbd1
--- /dev/null
+++ b/refactor/baselines/iframe-behavior-validation.json
@@ -0,0 +1,7817 @@
+{
+  "task": "PKG-IFRAME-02",
+  "status": "done",
+  "sourceSha256LF": {
+    "package.json": "2a03ab0570efef2ae3e8695ae483ebb81cbb1e1333d19bde9aeae296d9fdfcec",
+    "test/iframe.test.js": "4da001e8b69c3ac257de7a8db3474163d0b5ca1059de7fb78a9a369bf6fe371f",
+    "test/browser/iframe.spec.js": "e888b2ed06a6b765fe23047df28951604d7cbfa010d7005b512a7e57f8ddc95d",
+    "test/helpers/iframe.js": "fd05f4fc10e97f1a0b8961ea8f82976ea9d58d0ea75bb652af2ee13b8a89c9a0",
+    "refactor/baselines/iframe-release.json": "c58a952a4a5a2f0c02e7c76521537898874eb6d7955b9daa6b427c51aeadece7"
+  },
+  "node": {
+    "tests": 52,
+    "log": "refactor/.cache/iframe02-node.log",
+    "result": "pass-historical-assertions"
+  },
+  "browser": {
+    "tests": 144,
+    "report": "refactor/.cache/iframe02-final-results/report.json",
+    "sha256": "944bd5a4d4ec42b39c9441f5319a67e38fc24f839deea26880d60c4d6271268c",
+    "results": "refactor/.cache/iframe02-final-results/results",
+    "records": [
+      {
+        "project": "chromium",
+        "browser": "153.0.8010.12",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/153.0.8010.12 Safari/537.36",
+        "implementation": "published-artplayer-plugin-iframe.js",
+        "sha256": "df469c3e4582b127f35798494d0845f1fc4ca2d19bbaf01b918492e035479745",
+        "relation": "same-origin",
+        "scenario": "round-trip",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
+          "sync": 7,
+          "async": 8,
+          "error": "iframe baseline expected error",
+          "recovery": 9,
+          "pending": 0
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 7,
+            "id": 1789225936512,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 8,
+            "id": 1789225936513,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "error",
+            "data": "iframe baseline expected error",
+            "id": 1789225936524,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 9,
+            "id": 1789225936524,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "chromium",
+        "browser": "153.0.8010.12",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/153.0.8010.12 Safari/537.36",
+        "implementation": "published-artplayer-plugin-iframe.js",
+        "sha256": "df469c3e4582b127f35798494d0845f1fc4ca2d19bbaf01b918492e035479745",
+        "relation": "same-origin",
+        "scenario": "same-tick",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
+          "states": {
+            "first": {
+              "status": "pending"
+            },
+            "second": {
+              "status": "resolved",
+              "value": 1
+            }
+          },
+          "pending": 0
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 1,
+            "id": 1234,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 2,
+            "id": 1234,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "chromium",
+        "browser": "153.0.8010.12",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/153.0.8010.12 Safari/537.36",
+        "implementation": "published-artplayer-plugin-iframe.js",
+        "sha256": "df469c3e4582b127f35798494d0845f1fc4ca2d19bbaf01b918492e035479745",
+        "relation": "same-origin",
+        "scenario": "destroy-pending",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
+          "destroyed": true,
+          "state": {
+            "status": "pending"
+          },
+          "pending": 1
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-held",
+            "data": 1789225936520,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": "late",
+            "id": 1789225936520,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "chromium",
+        "browser": "153.0.8010.12",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/153.0.8010.12 Safari/537.36",
+        "implementation": "published-artplayer-plugin-iframe.js",
+        "sha256": "df469c3e4582b127f35798494d0845f1fc4ca2d19bbaf01b918492e035479745",
+        "relation": "same-origin",
+        "scenario": "foreign-message",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
+          "state": {
+            "status": "resolved",
+            "value": "foreign response"
+          },
+          "foreignResponse": {
+            "type": "response",
+            "data": "foreign response",
+            "id": 1789225936929,
+            "origin": "http://localhost:8084",
+            "fromChild": false
+          }
+        },
+        "packets": [
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "data": "foreign",
+            "origin": "http://localhost:8084",
+            "fromChild": false
+          },
+          {
+            "type": "fixture-held",
+            "data": 1789225936929,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": "foreign response",
+            "id": 1789225936929,
+            "origin": "http://localhost:8084",
+            "fromChild": false
+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": "foreign command",
+            "id": 17,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "chromium",
+        "browser": "153.0.8010.12",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/153.0.8010.12 Safari/537.36",
+        "implementation": "published-artplayer-plugin-iframe.js",
+        "sha256": "df469c3e4582b127f35798494d0845f1fc4ca2d19bbaf01b918492e035479745",
+        "relation": "same-origin",
+        "scenario": "navigation",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
+          "injected": true,
+          "state": {
+            "status": "pending"
+          },
+          "pending": 1
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=2",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 10,
+            "id": 1789225937034,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "chromium",
+        "browser": "153.0.8010.12",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/153.0.8010.12 Safari/537.36",
+        "implementation": "published-artplayer-plugin-iframe.js",
+        "sha256": "df469c3e4582b127f35798494d0845f1fc4ca2d19bbaf01b918492e035479745",
+        "relation": "same-origin",
+        "scenario": "clone-failure",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
+          "failure": "DataCloneError",
+          "deferred": {
+            "status": "pending"
+          },
+          "pending": 2,
+          "uncaught": [
+            "DataCloneError"
+          ]
+        },
+        "packets": [
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "chromium",
+        "browser": "153.0.8010.12",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/153.0.8010.12 Safari/537.36",
+        "implementation": "published-artplayer-plugin-iframe.js",
+        "sha256": "df469c3e4582b127f35798494d0845f1fc4ca2d19bbaf01b918492e035479745",
+        "relation": "cross-origin",
+        "scenario": "round-trip",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "sync": 7,
+          "async": 8,
+          "error": "iframe baseline expected error",
+          "recovery": 9,
+          "pending": 0
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 7,
+            "id": 1789225937276,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 8,
+            "id": 1789225937277,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "error",
+            "data": "iframe baseline expected error",
+            "id": 1789225937287,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 9,
+            "id": 1789225937288,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "chromium",
+        "browser": "153.0.8010.12",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/153.0.8010.12 Safari/537.36",
+        "implementation": "published-artplayer-plugin-iframe.js",
+        "sha256": "df469c3e4582b127f35798494d0845f1fc4ca2d19bbaf01b918492e035479745",
+        "relation": "cross-origin",
+        "scenario": "same-tick",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "states": {
+            "first": {
+              "status": "pending"
+            },
+            "second": {
+              "status": "resolved",
+              "value": 1
+            }
+          },
+          "pending": 0
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
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+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
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+          }
+        ],
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+      },
+      {
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+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "published-artplayer-plugin-iframe.js",
+        "sha256": "df469c3e4582b127f35798494d0845f1fc4ca2d19bbaf01b918492e035479745",
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+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
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+          "async": 8,
+          "error": "iframe baseline expected error",
+          "recovery": 9,
+          "pending": 0
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
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+            "id": 1789225959610,
+            "origin": "http://localhost:8084",
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+          {
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+            "id": 1789225959611,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "error",
+            "data": "iframe baseline expected error",
+            "id": 1789225959622,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
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+            "id": 1789225959622,
+            "origin": "http://localhost:8084",
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+      },
+      {
+        "project": "firefox",
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+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
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+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
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+              "status": "pending"
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+            "second": {
+              "status": "resolved",
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+        },
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+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
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+      },
+      {
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+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "published-artplayer-plugin-iframe.js",
+        "sha256": "df469c3e4582b127f35798494d0845f1fc4ca2d19bbaf01b918492e035479745",
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+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
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+          "state": {
+            "status": "pending"
+          },
+          "pending": 1
+        },
+        "packets": [
+          {
+            "type": "inject",
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+            "origin": "http://localhost:8084",
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+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-held",
+            "data": 1789225960248,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": "late",
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+            "origin": "http://localhost:8084",
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+      },
+      {
+        "project": "firefox",
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+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "published-artplayer-plugin-iframe.js",
+        "sha256": "df469c3e4582b127f35798494d0845f1fc4ca2d19bbaf01b918492e035479745",
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+        "scenario": "foreign-message",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
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+            "status": "resolved",
+            "value": "foreign response"
+          },
+          "foreignResponse": {
+            "type": "response",
+            "data": "foreign response",
+            "id": 1789225961018,
+            "origin": "http://127.0.0.1:8084",
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+          }
+        },
+        "packets": [
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+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "data": "foreign",
+            "origin": "http://127.0.0.1:8084",
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+          },
+          {
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+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": "foreign response",
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+          },
+          {
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+            "origin": "http://localhost:8084",
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+          },
+          {
+            "type": "response",
+            "data": "foreign command",
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+            "origin": "http://localhost:8084",
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+          }
+        ],
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+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "published-artplayer-plugin-iframe.js",
+        "sha256": "df469c3e4582b127f35798494d0845f1fc4ca2d19bbaf01b918492e035479745",
+        "relation": "cross-origin",
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+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
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+          "state": {
+            "status": "pending"
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+          "pending": 1
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=2",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
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+            "id": 1789225962918,
+            "origin": "http://localhost:8084",
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+        ],
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+      },
+      {
+        "project": "firefox",
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+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "published-artplayer-plugin-iframe.js",
+        "sha256": "df469c3e4582b127f35798494d0845f1fc4ca2d19bbaf01b918492e035479745",
+        "relation": "cross-origin",
+        "scenario": "clone-failure",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
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+            "status": "pending"
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+          "uncaught": [
+            "DataCloneError"
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+        },
+        "packets": [
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
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+            "origin": "http://localhost:8084",
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+          }
+        ],
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+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "published-artplayer-plugin-iframe.legacy.js",
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+        "relation": "same-origin",
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+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
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+          "async": 8,
+          "error": "iframe baseline expected error",
+          "recovery": 9,
+          "pending": 0
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
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+            "id": 1789225963158,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
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+            "data": 8,
+            "id": 1789225963158,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "error",
+            "data": "iframe baseline expected error",
+            "id": 1789225963171,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
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+            "id": 1789225963171,
+            "origin": "http://127.0.0.1:8084",
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+          }
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+      },
+      {
+        "project": "firefox",
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+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "published-artplayer-plugin-iframe.legacy.js",
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+        "relation": "same-origin",
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+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
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+        "packets": [
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+            "origin": "http://127.0.0.1:8084",
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+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
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+            "id": 1234,
+            "origin": "http://127.0.0.1:8084",
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+            "id": 1234,
+            "origin": "http://127.0.0.1:8084",
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+        ],
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+      },
+      {
+        "project": "firefox",
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+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
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+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
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+          "pending": 1
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://127.0.0.1:8084",
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+          },
+          {
+            "type": "fixture-held",
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+            "origin": "http://127.0.0.1:8084",
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+          },
+          {
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+            "id": 1789225965528,
+            "origin": "http://127.0.0.1:8084",
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+        ],
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+      },
+      {
+        "project": "firefox",
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+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
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+        "scenario": "foreign-message",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
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+          "foreignResponse": {
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+            "data": "foreign response",
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+            "origin": "http://localhost:8084",
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+          }
+        },
+        "packets": [
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+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "data": "foreign",
+            "origin": "http://localhost:8084",
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+          },
+          {
+            "type": "fixture-held",
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+            "origin": "http://127.0.0.1:8084",
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+          },
+          {
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+          },
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+            "data": "foreign command",
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+      },
+      {
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+        "foreignOrigin": "http://localhost:8084",
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+            "origin": "http://127.0.0.1:8084",
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+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=2",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
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+            "origin": "http://127.0.0.1:8084",
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+      },
+      {
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+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
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+        "sha256": "15299cb5c848cc61614f7573a802443d69b7c6d0a938a1867835c7cbb4884edd",
+        "relation": "same-origin",
+        "scenario": "clone-failure",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
+          "failure": "DataCloneError",
+          "deferred": {
+            "status": "pending"
+          },
+          "pending": 2,
+          "uncaught": [
+            "DataCloneError"
+          ]
+        },
+        "packets": [
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "published-artplayer-plugin-iframe.legacy.js",
+        "sha256": "15299cb5c848cc61614f7573a802443d69b7c6d0a938a1867835c7cbb4884edd",
+        "relation": "cross-origin",
+        "scenario": "round-trip",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "sync": 7,
+          "async": 8,
+          "error": "iframe baseline expected error",
+          "recovery": 9,
+          "pending": 0
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 7,
+            "id": 1789225967182,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 8,
+            "id": 1789225967183,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "error",
+            "data": "iframe baseline expected error",
+            "id": 1789225967194,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 9,
+            "id": 1789225967195,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "published-artplayer-plugin-iframe.legacy.js",
+        "sha256": "15299cb5c848cc61614f7573a802443d69b7c6d0a938a1867835c7cbb4884edd",
+        "relation": "cross-origin",
+        "scenario": "same-tick",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "states": {
+            "first": {
+              "status": "pending"
+            },
+            "second": {
+              "status": "resolved",
+              "value": 1
+            }
+          },
+          "pending": 0
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 1,
+            "id": 1234,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 2,
+            "id": 1234,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "published-artplayer-plugin-iframe.legacy.js",
+        "sha256": "15299cb5c848cc61614f7573a802443d69b7c6d0a938a1867835c7cbb4884edd",
+        "relation": "cross-origin",
+        "scenario": "destroy-pending",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "destroyed": true,
+          "state": {
+            "status": "pending"
+          },
+          "pending": 1
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-held",
+            "data": 1789225968983,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": "late",
+            "id": 1789225968983,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "published-artplayer-plugin-iframe.legacy.js",
+        "sha256": "15299cb5c848cc61614f7573a802443d69b7c6d0a938a1867835c7cbb4884edd",
+        "relation": "cross-origin",
+        "scenario": "foreign-message",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "state": {
+            "status": "resolved",
+            "value": "foreign response"
+          },
+          "foreignResponse": {
+            "type": "response",
+            "data": "foreign response",
+            "id": 1789225969534,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": false
+          }
+        },
+        "packets": [
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "data": "foreign",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": false
+          },
+          {
+            "type": "fixture-held",
+            "data": 1789225969534,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": "foreign response",
+            "id": 1789225969534,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": false
+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": "foreign command",
+            "id": 17,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "published-artplayer-plugin-iframe.legacy.js",
+        "sha256": "15299cb5c848cc61614f7573a802443d69b7c6d0a938a1867835c7cbb4884edd",
+        "relation": "cross-origin",
+        "scenario": "navigation",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "injected": true,
+          "state": {
+            "status": "pending"
+          },
+          "pending": 1
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=2",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 10,
+            "id": 1789225971038,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "published-artplayer-plugin-iframe.legacy.js",
+        "sha256": "15299cb5c848cc61614f7573a802443d69b7c6d0a938a1867835c7cbb4884edd",
+        "relation": "cross-origin",
+        "scenario": "clone-failure",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "failure": "DataCloneError",
+          "deferred": {
+            "status": "pending"
+          },
+          "pending": 2,
+          "uncaught": [
+            "DataCloneError"
+          ]
+        },
+        "packets": [
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "workspace.js",
+        "sha256": "2ec257c8055a9448d12af3fecf1fae8ba58c06f47e85072d02c386cd258b0c86",
+        "relation": "same-origin",
+        "scenario": "round-trip",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
+          "sync": 7,
+          "async": 8,
+          "error": "iframe baseline expected error",
+          "recovery": 9,
+          "pending": 0
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 7,
+            "id": 1789225971701,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 8,
+            "id": 1789225971701,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "error",
+            "data": "iframe baseline expected error",
+            "id": 1789225971712,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 9,
+            "id": 1789225971713,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "workspace.js",
+        "sha256": "2ec257c8055a9448d12af3fecf1fae8ba58c06f47e85072d02c386cd258b0c86",
+        "relation": "same-origin",
+        "scenario": "same-tick",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
+          "states": {
+            "first": {
+              "status": "pending"
+            },
+            "second": {
+              "status": "resolved",
+              "value": 1
+            }
+          },
+          "pending": 0
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 1,
+            "id": 1234,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 2,
+            "id": 1234,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "workspace.js",
+        "sha256": "2ec257c8055a9448d12af3fecf1fae8ba58c06f47e85072d02c386cd258b0c86",
+        "relation": "same-origin",
+        "scenario": "destroy-pending",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
+          "destroyed": true,
+          "state": {
+            "status": "pending"
+          },
+          "pending": 1
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-held",
+            "data": 1789225973234,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": "late",
+            "id": 1789225973234,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "workspace.js",
+        "sha256": "2ec257c8055a9448d12af3fecf1fae8ba58c06f47e85072d02c386cd258b0c86",
+        "relation": "same-origin",
+        "scenario": "foreign-message",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
+          "state": {
+            "status": "resolved",
+            "value": "foreign response"
+          },
+          "foreignResponse": {
+            "type": "response",
+            "data": "foreign response",
+            "id": 1789225973635,
+            "origin": "http://localhost:8084",
+            "fromChild": false
+          }
+        },
+        "packets": [
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "data": "foreign",
+            "origin": "http://localhost:8084",
+            "fromChild": false
+          },
+          {
+            "type": "fixture-held",
+            "data": 1789225973635,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": "foreign response",
+            "id": 1789225973635,
+            "origin": "http://localhost:8084",
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+          },
+          {
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+            "origin": "http://127.0.0.1:8084",
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+          },
+          {
+            "type": "response",
+            "data": "foreign command",
+            "id": 17,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
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+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "workspace.js",
+        "sha256": "2ec257c8055a9448d12af3fecf1fae8ba58c06f47e85072d02c386cd258b0c86",
+        "relation": "same-origin",
+        "scenario": "navigation",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
+          "injected": true,
+          "state": {
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+          },
+          "pending": 1
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=2",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 10,
+            "id": 1789225975267,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          }
+        ],
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+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "workspace.js",
+        "sha256": "2ec257c8055a9448d12af3fecf1fae8ba58c06f47e85072d02c386cd258b0c86",
+        "relation": "same-origin",
+        "scenario": "clone-failure",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
+          "failure": "DataCloneError",
+          "deferred": {
+            "status": "pending"
+          },
+          "pending": 2,
+          "uncaught": [
+            "DataCloneError"
+          ]
+        },
+        "packets": [
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "workspace.js",
+        "sha256": "2ec257c8055a9448d12af3fecf1fae8ba58c06f47e85072d02c386cd258b0c86",
+        "relation": "cross-origin",
+        "scenario": "round-trip",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "sync": 7,
+          "async": 8,
+          "error": "iframe baseline expected error",
+          "recovery": 9,
+          "pending": 0
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 7,
+            "id": 1789225980412,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 8,
+            "id": 1789225980413,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "error",
+            "data": "iframe baseline expected error",
+            "id": 1789225980427,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 9,
+            "id": 1789225980427,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "workspace.js",
+        "sha256": "2ec257c8055a9448d12af3fecf1fae8ba58c06f47e85072d02c386cd258b0c86",
+        "relation": "cross-origin",
+        "scenario": "same-tick",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "states": {
+            "first": {
+              "status": "pending"
+            },
+            "second": {
+              "status": "resolved",
+              "value": 1
+            }
+          },
+          "pending": 0
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 1,
+            "id": 1234,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 2,
+            "id": 1234,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "workspace.js",
+        "sha256": "2ec257c8055a9448d12af3fecf1fae8ba58c06f47e85072d02c386cd258b0c86",
+        "relation": "cross-origin",
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+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "destroyed": true,
+          "state": {
+            "status": "pending"
+          },
+          "pending": 1
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
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+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-held",
+            "data": 1789225981524,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": "late",
+            "id": 1789225981524,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "workspace.js",
+        "sha256": "2ec257c8055a9448d12af3fecf1fae8ba58c06f47e85072d02c386cd258b0c86",
+        "relation": "cross-origin",
+        "scenario": "foreign-message",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "state": {
+            "status": "resolved",
+            "value": "foreign response"
+          },
+          "foreignResponse": {
+            "type": "response",
+            "data": "foreign response",
+            "id": 1789225983859,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": false
+          }
+        },
+        "packets": [
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "data": "foreign",
+            "origin": "http://127.0.0.1:8084",
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+          },
+          {
+            "type": "fixture-held",
+            "data": 1789225983859,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": "foreign response",
+            "id": 1789225983859,
+            "origin": "http://127.0.0.1:8084",
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+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
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+          },
+          {
+            "type": "response",
+            "data": "foreign command",
+            "id": 17,
+            "origin": "http://localhost:8084",
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+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "workspace.js",
+        "sha256": "2ec257c8055a9448d12af3fecf1fae8ba58c06f47e85072d02c386cd258b0c86",
+        "relation": "cross-origin",
+        "scenario": "navigation",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "injected": true,
+          "state": {
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+          },
+          "pending": 1
+        },
+        "packets": [
+          {
+            "type": "inject",
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+            "origin": "http://localhost:8084",
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+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=2",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 10,
+            "id": 1789225983786,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "workspace.js",
+        "sha256": "2ec257c8055a9448d12af3fecf1fae8ba58c06f47e85072d02c386cd258b0c86",
+        "relation": "cross-origin",
+        "scenario": "clone-failure",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "failure": "DataCloneError",
+          "deferred": {
+            "status": "pending"
+          },
+          "pending": 2,
+          "uncaught": [
+            "DataCloneError"
+          ]
+        },
+        "packets": [
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
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+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "workspace.legacy.js",
+        "sha256": "c0755d79f316cda71f045da86749648f95faf47c09180d525fb04bb753576d5f",
+        "relation": "same-origin",
+        "scenario": "round-trip",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
+          "sync": 7,
+          "async": 8,
+          "error": "iframe baseline expected error",
+          "recovery": 9,
+          "pending": 0
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 7,
+            "id": 1789225986481,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 8,
+            "id": 1789225986482,
+            "origin": "http://127.0.0.1:8084",
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+          },
+          {
+            "type": "error",
+            "data": "iframe baseline expected error",
+            "id": 1789225986497,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
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+            "id": 1789225986498,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
+        "implementation": "workspace.legacy.js",
+        "sha256": "c0755d79f316cda71f045da86749648f95faf47c09180d525fb04bb753576d5f",
+        "relation": "same-origin",
+        "scenario": "same-tick",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
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+            "second": {
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+            }
+          },
+          "pending": 0
+        },
+        "packets": [
+          {
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+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
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+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 1,
+            "id": 1234,
+            "origin": "http://127.0.0.1:8084",
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+          },
+          {
+            "type": "response",
+            "data": 2,
+            "id": 1234,
+            "origin": "http://127.0.0.1:8084",
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+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
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+        "sha256": "c0755d79f316cda71f045da86749648f95faf47c09180d525fb04bb753576d5f",
+        "relation": "same-origin",
+        "scenario": "destroy-pending",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
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+          "state": {
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+          },
+          "pending": 1
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
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+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://127.0.0.1:8084",
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+          },
+          {
+            "type": "fixture-held",
+            "data": 1789225986688,
+            "origin": "http://127.0.0.1:8084",
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+          },
+          {
+            "type": "response",
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+            "id": 1789225986688,
+            "origin": "http://127.0.0.1:8084",
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+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "firefox",
+        "browser": "155.0",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
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+        "sha256": "c0755d79f316cda71f045da86749648f95faf47c09180d525fb04bb753576d5f",
+        "relation": "same-origin",
+        "scenario": "foreign-message",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
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+            "value": "foreign response"
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+          "foreignResponse": {
+            "type": "response",
+            "data": "foreign response",
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+            "origin": "http://localhost:8084",
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+          }
+        },
+        "packets": [
+          {
+            "type": "fixture-ready",
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+            "origin": "http://127.0.0.1:8084",
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+          },
+          {
+            "type": "inject",
+            "data": "foreign",
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+          },
+          {
+            "type": "fixture-held",
+            "data": 1789225988398,
+            "origin": "http://127.0.0.1:8084",
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+          },
+          {
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+          },
+          {
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+            "data": "foreign command",
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+            "origin": "http://127.0.0.1:8084",
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+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
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+        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:155.0) Gecko/20100101 Firefox/155.0",
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+        "sha256": "c0755d79f316cda71f045da86749648f95faf47c09180d525fb04bb753576d5f",
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+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
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+          "state": {
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+          "pending": 1
+        },
+        "packets": [
+          {
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+          },
+          {
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+            "data": "?auto=1&epoch=1",
+            "origin": "http://127.0.0.1:8084",
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+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=2",
+            "origin": "http://127.0.0.1:8084",
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+          },
+          {
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+        "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.6 Safari/605.1.15",
+        "implementation": "workspace.legacy.js",
+        "sha256": "c0755d79f316cda71f045da86749648f95faf47c09180d525fb04bb753576d5f",
+        "relation": "same-origin",
+        "scenario": "foreign-message",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
+          "state": {
+            "status": "resolved",
+            "value": "foreign response"
+          },
+          "foreignResponse": {
+            "type": "response",
+            "data": "foreign response",
+            "id": 1789226043121,
+            "origin": "http://localhost:8084",
+            "fromChild": false
+          }
+        },
+        "packets": [
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "data": "foreign",
+            "origin": "http://localhost:8084",
+            "fromChild": false
+          },
+          {
+            "type": "fixture-held",
+            "data": 1789226043121,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": "foreign response",
+            "id": 1789226043121,
+            "origin": "http://localhost:8084",
+            "fromChild": false
+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": "foreign command",
+            "id": 17,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "webkit",
+        "browser": "26.6",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.6 Safari/605.1.15",
+        "implementation": "workspace.legacy.js",
+        "sha256": "c0755d79f316cda71f045da86749648f95faf47c09180d525fb04bb753576d5f",
+        "relation": "same-origin",
+        "scenario": "navigation",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
+          "injected": true,
+          "state": {
+            "status": "pending"
+          },
+          "pending": 1
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=2",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 10,
+            "id": 1789226044259,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "webkit",
+        "browser": "26.6",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.6 Safari/605.1.15",
+        "implementation": "workspace.legacy.js",
+        "sha256": "c0755d79f316cda71f045da86749648f95faf47c09180d525fb04bb753576d5f",
+        "relation": "same-origin",
+        "scenario": "clone-failure",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://127.0.0.1:8084",
+        "foreignOrigin": "http://localhost:8084",
+        "result": {
+          "failure": "DataCloneError",
+          "deferred": {
+            "status": "pending"
+          },
+          "pending": 2,
+          "uncaught": [
+            "DataCloneError"
+          ]
+        },
+        "packets": [
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=1",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "webkit",
+        "browser": "26.6",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.6 Safari/605.1.15",
+        "implementation": "workspace.legacy.js",
+        "sha256": "c0755d79f316cda71f045da86749648f95faf47c09180d525fb04bb753576d5f",
+        "relation": "cross-origin",
+        "scenario": "round-trip",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "sync": 7,
+          "async": 8,
+          "error": "iframe baseline expected error",
+          "recovery": 9,
+          "pending": 0
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 7,
+            "id": 1789226044995,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 8,
+            "id": 1789226045010,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "error",
+            "data": "iframe baseline expected error",
+            "id": 1789226045056,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 9,
+            "id": 1789226045091,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "webkit",
+        "browser": "26.6",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.6 Safari/605.1.15",
+        "implementation": "workspace.legacy.js",
+        "sha256": "c0755d79f316cda71f045da86749648f95faf47c09180d525fb04bb753576d5f",
+        "relation": "cross-origin",
+        "scenario": "same-tick",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "states": {
+            "first": {
+              "status": "pending"
+            },
+            "second": {
+              "status": "resolved",
+              "value": 1
+            }
+          },
+          "pending": 0
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 1,
+            "id": 1234,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 2,
+            "id": 1234,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "webkit",
+        "browser": "26.6",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.6 Safari/605.1.15",
+        "implementation": "workspace.legacy.js",
+        "sha256": "c0755d79f316cda71f045da86749648f95faf47c09180d525fb04bb753576d5f",
+        "relation": "cross-origin",
+        "scenario": "destroy-pending",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "destroyed": true,
+          "state": {
+            "status": "pending"
+          },
+          "pending": 1
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-held",
+            "data": 1789226045656,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": "late",
+            "id": 1789226045656,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "webkit",
+        "browser": "26.6",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.6 Safari/605.1.15",
+        "implementation": "workspace.legacy.js",
+        "sha256": "c0755d79f316cda71f045da86749648f95faf47c09180d525fb04bb753576d5f",
+        "relation": "cross-origin",
+        "scenario": "foreign-message",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "state": {
+            "status": "resolved",
+            "value": "foreign response"
+          },
+          "foreignResponse": {
+            "type": "response",
+            "data": "foreign response",
+            "id": 1789226046526,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": false
+          }
+        },
+        "packets": [
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "data": "foreign",
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": false
+          },
+          {
+            "type": "fixture-held",
+            "data": 1789226046526,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": "foreign response",
+            "id": 1789226046526,
+            "origin": "http://127.0.0.1:8084",
+            "fromChild": false
+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": "foreign command",
+            "id": 17,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "webkit",
+        "browser": "26.6",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.6 Safari/605.1.15",
+        "implementation": "workspace.legacy.js",
+        "sha256": "c0755d79f316cda71f045da86749648f95faf47c09180d525fb04bb753576d5f",
+        "relation": "cross-origin",
+        "scenario": "navigation",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "injected": true,
+          "state": {
+            "status": "pending"
+          },
+          "pending": 1
+        },
+        "packets": [
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=1&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=2",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "response",
+            "data": 10,
+            "id": 1789226047396,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      },
+      {
+        "project": "webkit",
+        "browser": "26.6",
+        "platform": "win32",
+        "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.6 Safari/605.1.15",
+        "implementation": "workspace.legacy.js",
+        "sha256": "c0755d79f316cda71f045da86749648f95faf47c09180d525fb04bb753576d5f",
+        "relation": "cross-origin",
+        "scenario": "clone-failure",
+        "parentOrigin": "http://127.0.0.1:8084",
+        "childOrigin": "http://localhost:8084",
+        "foreignOrigin": "http://127.0.0.1:8084",
+        "result": {
+          "failure": "DataCloneError",
+          "deferred": {
+            "status": "pending"
+          },
+          "pending": 2,
+          "uncaught": [
+            "DataCloneError"
+          ]
+        },
+        "packets": [
+          {
+            "type": "fixture-ready",
+            "data": "?auto=0&epoch=1",
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          },
+          {
+            "type": "inject",
+            "id": 0,
+            "origin": "http://localhost:8084",
+            "fromChild": true
+          }
+        ],
+        "scope": "Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived."
+      }
+    ]
+  },
+  "checks": [
+    {
+      "command": "yarn ci:check",
+      "result": "pass",
+      "exitCode": 0,
+      "log": "refactor/.cache/iframe02-ci.log",
+      "tests": 1489,
+      "repeatedContracts": 44,
+      "productionTypeScriptFiles": 324
+    }
+  ],
+  "limitations": [
+    "Assertions preserve historical failures and are not candidate fix acceptance.",
+    "No Artplayer instance/media/core combination is exercised by the iframe-only tool tests.",
+    "Local route provides controlled documents; no production-site or physical-device claim.",
+    "Source/origin policy and executable commit compatibility remain a separate decision."
+  ]
+}
diff --git a/refactor/changes/2026-09-12-PKG-IFRAME-02-behavior.md b/refactor/changes/2026-09-12-PKG-IFRAME-02-behavior.md
new file mode 100644
index 000000000..fee2bb29e
--- /dev/null
+++ b/refactor/changes/2026-09-12-PKG-IFRAME-02-behavior.md
@@ -0,0 +1,59 @@
+# PKG-IFRAME-02 历史消息、请求与销毁行为
+
+新增52项Node检查，使用冻结发布主main/legacy及工作区main/legacy，保留既有正常控制，
+并将生命周期风险从源码观察推进到可重跑复现。额外helper继续由IFRAME-01独立契约覆盖，
+本轮不能代表helper的完整迁移验收。
+
+| 场景 | 四份主实现的实际结果 |
+| --- | --- |
+| 同毫秒两个请求 | id相同；第二回调覆盖第一，第一响应错误地结算第二请求，第一请求悬挂 |
+| 已发送后destroy | 监听被移除，但public promises记录和Promise保留 |
+| 等待inject时destroy | 200ms定时器仍保留；待旧timer执行才拒绝，不能称为立即取消 |
+| 销毁后新请求 | 正常拒绝既有错误消息，没有新timer；作为正向控制 |
+| 不同ID乱序/错误 | 正确对应resolve/reject与Error(data)，删除记录 |
+| 同ID自定义非error类型 | 同样resolve；这是generic postMessage兼容协议，不能只允许response |
+| event.data=null | public receiver抛TypeError |
+| 即时发送失败 | Promise拒绝，但请求记录保留 |
+| 轮询后发送失败 | 异常逃离timer回调，外层Promise悬挂且记录保留 |
+| 销毁后的已保存receiver | 仍可结算旧请求并通知message回调 |
+| iframe导航 | injected沿用旧值，未等新inject便发送 |
+| 重复child inject | 重复握手，但浏览器式EventTarget对相同handler去重，不能声称重复注册监听 |
+| child执行错误/恢复 | 发error后异步拒绝，后续命令正常 |
+
+## 真实浏览器
+
+矩阵4份产物×同源/跨源×6场景×Chromium/Firefox/WebKit，共144项通过。这里的通过是
+旧行为/缺陷的复现断言通过，不表示这些缺陷已修复。所有场景都创建实际iframe，使用浏览器
+原生WindowProxy、postMessage、event.source与event.origin；没有伪造MessageEvent来源。
+跨源使用127.0.0.1与localhost两个实际不同origin，由本地route提供冻结库及可控页面。
+首轮5项和120项、最终144项均归档report.json和整个results。
+
+六类场景为：同步/resolve异步/错误/恢复round-trip，同毫秒冲突，destroy后迟到回复，
+无关窗口消息，导航到未inject页面，以及原生结构化克隆失败。
+
+无关窗口能让父实例误认inject、结算其请求，还能向另一个子iframe发送commit并让它执行
+本地测试的常量表达式。报告保存真实origin/source关系；测试只操作自己创建的本地页面，
+不能从这组证据推导其他站点的数据可访问性。
+
+导航后，旧实例提前发出的commit被新页面真实接收，但因尚未inject而丢失；之后inject并
+发出新请求可恢复，旧请求仍悬挂。clone-failure使用原生不可克隆函数触发DataCloneError，
+分别验证timer中的未处理异常/悬挂与即时拒绝/留记录。只拦截测试刻意触发的DataCloneError
+以及固定child错误，其余未处理页面错误仍由通用fixture判失败。Date.now仅为同tick冲突和
+两个clone失败的不同ID做受控设置，不能将其报告为自然网络计时。
+
+工具本身不依赖ArtPlayer实例；本轮未创建播放器，不计作旧/新核心媒体集成，也未访问线上demo。
+正常消息控制和故障断言保持分离，后续03/04须新增候选修复断言，同时保留历史负例。
+
+## 后续实施约束
+
+保留resove公开拼写、promises公开视图、绑定onMessage、message回调receiver/返回形状、
+任意非error的同ID响应、commit函数体/resolve约定及既有错误消息。请求身份、等待timer、
+发送异常、销毁和导航的资源归属可在内部修复，必须用相同场景验证旧失败/候选成功。
+source/origin与可执行commit的信任模型在IFRAME-03/05单独说明，保留同源/跨源正常使用，
+不能将所有历史消息静默改成另一套RPC。
+
+本任务没有修改生产源码、公开类型、协议或版本。完整CI和最终证据核验完成后专用提交；
+IFRAME-LIFE-01、IFRAME-TRUST-01仍open，下一项IFRAME-03实施资源与消息边界。
+
+完整CI退出0：1489项（1315单元、14工程、160基线）与44重复契约通过，324生产TS。
+最终源码和浏览器报告哈希已核验；本任务完成后立即单独本地提交，不推送或发布。
diff --git a/refactor/plan.md b/refactor/plan.md
index 21d766041..7dd79d9df 100644
--- a/refactor/plan.md
+++ b/refactor/plan.md
@@ -4,7 +4,7 @@
 
 基线：`40fcda6a37d0049d42e49c1e64e70d4fd9ba5f7f`。总任务 222 项，范围 22 个包及工作区/示例。
 
-状态：todo 107 / doing 9 / blocked 0 / done 106 / deferred 0。风险 L/M/H 表示兼容风险，不表示工期。
+状态：todo 106 / doing 9 / blocked 0 / done 107 / deferred 0。风险 L/M/H 表示兼容风险，不表示工期。
 
 前置依赖是启动条件；验收是完成条件。任务可以继续拆分，但不能复用或悄悄删除旧 ID。
 
@@ -345,7 +345,7 @@
 | ID | 范围 / 步骤 | 前置依赖 | 交付物 | 验收条件 | 风险 | 状态 |
 | --- | --- | --- | --- | --- | --- | --- |
 | PKG-IFRAME-01 | artplayer-tool-iframe<br>核对包契约与历史用法 | BASE-05 | constructor/commit/message/inject、postMessage 协议与历史公开拼写 | 源码/声明/README/demo/发布包差异已登记；公开形状和版本范围冻结 | H | done |
-| PKG-IFRAME-02 | artplayer-tool-iframe<br>建立特有行为与错误测试 | PKG-IFRAME-01, ENG-03, ENG-05 | 跨窗口消息、ID 匹配、请求失败、重复 inject、销毁中请求 | 旧版本行为可重跑，成功/失败/切源/销毁有必要断言 | H | todo |
+| PKG-IFRAME-02 | artplayer-tool-iframe<br>建立特有行为与错误测试 | PKG-IFRAME-01, ENG-03, ENG-05 | 跨窗口消息、ID 匹配、请求失败、重复 inject、销毁中请求 | 旧版本行为可重跑，成功/失败/切源/销毁有必要断言 | H | done |
 | PKG-IFRAME-03 | artplayer-tool-iframe<br>整理内部职责与资源 | PKG-IFRAME-02, CORE-02, BASE-07 | 请求注册/响应匹配/监听清理分离；origin/source 安全边界独立决策 | 结构变化和缺陷修复分开记录；原 API/事件/资源生命周期通过 | H | todo |
 | PKG-IFRAME-04 | artplayer-tool-iframe<br>迁移自有源码和公开类型 | PKG-IFRAME-03, ENG-04, ENG-06, CORE-07 | 消息联合类型、回调/Promise 推导、旧公开字段兼容；旧npm export=与实际namespace、额外helper协议分别核验 | 严格类型检查、旧消费样例通过；声明路径/导出和同步异步兼容 | H | todo |
 | PKG-IFRAME-05 | artplayer-tool-iframe<br>验证新旧核心和组合 | PKG-IFRAME-04, CORE-22 | 真实同源/跨源 iframe、既有 commit 协议；安全变化有独立结论 | 最终核心与原支持范围核心分别通过；设备/SDK 缺证据不能标完成 | H | todo |
@@ -531,4 +531,5 @@
 - PKG-MB-08: [记录](baselines/mb-entry-source.json) [记录](changes/2026-09-12-PKG-MB-08-entry-checkpoint.md) [记录](baselines/mb-entry-checkpoint.json) [记录](baselines/mb-capability-source.json) [记录](changes/2026-09-12-PKG-MB-08-capability.md) [记录](baselines/mb-capability-validation.json)
 - PKG-MB-09: [记录](changes/2026-09-12-PKG-MB-09-native-pip-checkpoint.md) [记录](baselines/mb-native-pip-checkpoint.json) [记录](changes/2026-09-12-PKG-MB-09-sustained-playback-checkpoint.md) [记录](baselines/mb-sustained-validation.json) [记录](baselines/mb-sustained-media.json)
 - PKG-IFRAME-01: [记录](changes/2026-09-12-PKG-IFRAME-01-contract.md) [记录](baselines/iframe-release.json) [记录](baselines/iframe-contract.md) [记录](baselines/iframe-contract-validation.json)
+- PKG-IFRAME-02: [记录](changes/2026-09-12-PKG-IFRAME-02-behavior.md) [记录](baselines/iframe-behavior-validation.json)
 - PKG-FACTORY-01: [记录](baselines/factory-assignment-gaps.json) [记录](baselines/factory-compatibility-proposals.json) [记录](factory-compatibility-decision.md) [记录](changes/2026-09-12-PKG-FACTORY-01-decision.md)
diff --git a/refactor/progress.md b/refactor/progress.md
index 7d056e44f..42e95c457 100644
--- a/refactor/progress.md
+++ b/refactor/progress.md
@@ -1,5 +1,14 @@
 # 进度与证据
 
+## PKG-IFRAME-02 完成：历史生命周期与真实窗口缺陷复现
+
+52项Node和144项Chromium/Firefox/WebKit真实窗口检查通过，覆盖4份历史产物、同源/跨源。
+确认同毫秒请求串线、销毁/导航悬挂、克隆失败泄漏，以及无关窗口冒充握手/响应/commit。
+这是历史缺陷断言通过，尚未代表修复；工具测试未创建播放器，不计作核心媒体集成。
+完整CI1489与44重复契约通过，324生产TS；源码和归档报告哈希一致。
+见[变更](changes/2026-09-12-PKG-IFRAME-02-behavior.md)与[验证](baselines/iframe-behavior-validation.json)。
+222项：107 done、9 doing、106 todo；立即专用本地提交。三项Iframe风险仍open，下一项03实施修复。
+
 ## PKG-IFRAME-01 完成：发布名、辅助类与消息契约
 
 实际旧包plugin-iframe@1.0.0的8个成员和工作区11个输入已冻结；新tool名本次npm查询404，
diff --git a/refactor/risk-table.md b/refactor/risk-table.md
index f8e01195d..247f8851a 100644
--- a/refactor/risk-table.md
+++ b/refactor/risk-table.md
@@ -174,6 +174,6 @@
 | MB-CAP-01 | open / 已复现 | Current Windows WebKit lacks WebCodecs and Web Audio constructors needed by historical MediaBunny proxies | PKG-MB-02, PKG-MB-09 |
 | MB-READY-01 | resolved / 已复现 | MediaBunny historical readiness can repeat for trackless input and occur after capability errors | PKG-MB-04, PKG-MB-09 |
 | DPIP-DISPLAY-01 | resolved / 已复现 | Web fullscreen body placement reclaims a player adopted into another document | CORE-22, PKG-DPIP-05 |
-| IFRAME-LIFE-01 | open / 源码/产物事实 | Iframe timestamp IDs and unowned pending requests/timers lack terminal cleanup | PKG-IFRAME-02, PKG-IFRAME-03 |
-| IFRAME-TRUST-01 | open / 源码/产物事实 | Iframe executable commit protocol accepts messages without source/origin validation | PKG-IFRAME-03, PKG-IFRAME-05 |
+| IFRAME-LIFE-01 | open / 已复现 | Iframe timestamp IDs and unowned pending requests/timers lack terminal cleanup | PKG-IFRAME-02, PKG-IFRAME-03 |
+| IFRAME-TRUST-01 | open / 已复现 | Iframe executable commit protocol accepts messages without source/origin validation | PKG-IFRAME-03, PKG-IFRAME-05 |
 | IFRAME-DIST-01 | open / 已复现 | Iframe tool name is unavailable at registry observation and old archive includes distinct helper exports | PKG-IFRAME-04, PKG-IFRAME-06 |
diff --git a/refactor/risks.json b/refactor/risks.json
index c920fdaba..6377016a2 100644
--- a/refactor/risks.json
+++ b/refactor/risks.json
@@ -3774,13 +3774,15 @@
         "PKG-IFRAME-03"
       ],
       "status": "open",
-      "confirmation": "source-observed",
+      "confirmation": "reproduced",
       "compatibleResolution": "Reproduce same-tick request collision, pending injection, response errors and destroy behavior before changing internal ownership; preserve public promises[id].resove.",
       "closureCriteria": "Old behavior and candidate fixes have deterministic race/resource tests plus actual iframe integration.",
       "evidence": [
         "refactor/baselines/iframe-contract.md",
         "refactor/baselines/iframe-release.json",
-        "refactor/changes/2026-09-12-PKG-IFRAME-01-contract.md"
+        "refactor/changes/2026-09-12-PKG-IFRAME-01-contract.md",
+        "refactor/baselines/iframe-behavior-validation.json",
+        "refactor/changes/2026-09-12-PKG-IFRAME-02-behavior.md"
       ]
     },
     {
@@ -3791,13 +3793,15 @@
         "PKG-IFRAME-05"
       ],
       "status": "open",
-      "confirmation": "source-observed",
+      "confirmation": "reproduced",
       "compatibleResolution": "Treat message origin/source and executable commit as an explicit compatibility and trust-boundary decision; do not silently replace the protocol during TS conversion.",
       "closureCriteria": "Controlled and real same/cross-origin evidence plus an explicit documented compatibility decision and supported trust model.",
       "evidence": [
         "refactor/baselines/iframe-contract.md",
         "refactor/baselines/iframe-release.json",
-        "refactor/changes/2026-09-12-PKG-IFRAME-01-contract.md"
+        "refactor/changes/2026-09-12-PKG-IFRAME-01-contract.md",
+        "refactor/baselines/iframe-behavior-validation.json",
+        "refactor/changes/2026-09-12-PKG-IFRAME-02-behavior.md"
       ]
     },
     {
diff --git a/refactor/tasks.json b/refactor/tasks.json
index ec289d130..c4ed7bf89 100644
--- a/refactor/tasks.json
+++ b/refactor/tasks.json
@@ -3635,11 +3635,14 @@
         "ENG-03",
         "ENG-05"
       ],
-      "status": "todo",
+      "status": "done",
       "risk": "H",
       "deliverable": "跨窗口消息、ID 匹配、请求失败、重复 inject、销毁中请求",
       "acceptance": "旧版本行为可重跑，成功/失败/切源/销毁有必要断言",
-      "evidence": []
+      "evidence": [
+        "changes/2026-09-12-PKG-IFRAME-02-behavior.md",
+        "baselines/iframe-behavior-validation.json"
+      ]
     },
     {
       "id": "PKG-IFRAME-03",
diff --git a/test/browser/iframe.spec.js b/test/browser/iframe.spec.js
new file mode 100644
index 000000000..dc1747a84
--- /dev/null
+++ b/test/browser/iframe.spec.js
@@ -0,0 +1,191 @@
+import { hash } from '../../refactor/scripts/releases.mjs'
+import { iframeHistorical } from '../helpers/iframe.js'
+import { expect, test } from './fixtures.js'
+
+const implementations = (await iframeHistorical()).filter(item => item.global !== 'ArtplayerHelperIframe')
+
+for (const implementation of implementations) {
+  for (const relation of ['same-origin', 'cross-origin']) {
+    for (const scenario of ['round-trip', 'same-tick', 'destroy-pending', 'foreign-message', 'navigation', 'clone-failure']) {
+      test(`Iframe ${implementation.name}/${relation}: ${scenario} historical behavior`, async ({ page }, testInfo) => {
+        await page.goto('/test/player.html?core=published')
+        const parentOrigin = new URL(page.url()).origin
+        const alternate = parentOrigin.replace('127.0.0.1', 'localhost')
+        const childOrigin = relation === 'same-origin' ? parentOrigin : alternate
+        const foreignOrigin = relation === 'same-origin' ? alternate : parentOrigin
+        await page.route('**/iframe-baseline-lib.js', route => route.fulfill({ contentType: 'text/javascript', body: implementation.code }))
+        await page.route('**/iframe-baseline-child?*', route => route.fulfill({ contentType: 'text/html', body: `<!doctype html><script src="/iframe-baseline-lib.js"></script><script>
+          window.Tool = window.${implementation.global}; window.received = []; window.expectedErrors = [];
+          addEventListener('unhandledrejection', event => {
+            if (event.reason?.message === 'iframe baseline expected error') {
+              expectedErrors.push(event.reason.message); event.preventDefault();
+            }
+          });
+          addEventListener('message', event => {
+            received.push({ type: event.data?.type, id: event.data?.id, fromParent: event.source === parent, origin: event.origin });
+            if (event.data?.type === 'hold') {
+              window.held = event.data;
+              parent.postMessage({ type: 'fixture-held', data: held.id }, '*');
+            }
+          });
+          if (new URL(location.href).searchParams.get('auto') !== '0') Tool.inject();
+          parent.postMessage({ type: 'fixture-ready', data: location.search }, '*');
+        </script>` }))
+        await page.route('**/iframe-baseline-foreign', route => route.fulfill({ contentType: 'text/html', body: '<!doctype html><script>parent.postMessage({type:"inject",data:"foreign"},"*")</script>' }))
+        await page.addScriptTag({ content: `(() => { const module = { exports: {} }; const exports = module.exports; ${implementation.code}; window.IframeFactory = module.exports.default || module.exports; })();` })
+        const manualInjection = scenario === 'foreign-message' || scenario === 'clone-failure'
+        const url = `${childOrigin}/iframe-baseline-child?auto=${manualInjection ? 0 : 1}&epoch=1`
+        await page.evaluate((url) => {
+          window.packets = []
+          window.states = {}
+          const frame = document.createElement('iframe')
+          frame.id = 'target-frame'
+          document.body.append(frame)
+          window.targetFrame = frame
+          window.addEventListener('message', event => window.packets.push({ type: event.data?.type, data: event.data?.data, id: event.data?.id, origin: event.origin, fromChild: event.source === frame.contentWindow }))
+          window.tool = new window.IframeFactory({ iframe: frame, url })
+          window.track = (key, promise) => {
+            window.states[key] = { status: 'pending' }
+            promise.then(value => window.states[key] = { status: 'resolved', value }, error => window.states[key] = { status: 'rejected', error: error.message })
+          }
+        }, url)
+        let result
+        try {
+          await expect.poll(() => page.evaluate(() => window.packets.some(packet => packet.type === 'fixture-ready'))).toBe(true)
+          if (!manualInjection)
+            await expect.poll(() => page.evaluate(() => window.tool.injected)).toBe(true)
+          if (scenario === 'round-trip') {
+            result = await page.evaluate(async () => {
+              const sync = await window.tool.commit(() => {
+                return 7
+              })
+              const async = await window.tool.commit((resolve) => {
+                setTimeout(() => resolve(8), 10)
+              })
+              let error
+              try {
+                await window.tool.commit(() => {
+                  throw new Error('iframe baseline expected error')
+                })
+              }
+              catch (failure) { error = failure.message }
+              const recovery = await window.tool.commit(() => {
+                return 9
+              })
+              return { sync, async, error, recovery, pending: Object.keys(window.tool.promises).length }
+            })
+            expect(result).toEqual({ sync: 7, async: 8, error: 'iframe baseline expected error', recovery: 9, pending: 0 })
+          }
+          else if (scenario === 'same-tick') {
+            await page.evaluate(() => {
+              const now = Date.now
+              Date.now = () => 1234
+              try {
+                window.track('first', window.tool.commit(() => {
+                  return 1
+                }))
+                window.track('second', window.tool.commit(() => {
+                  return 2
+                }))
+              }
+              finally { Date.now = now }
+            })
+            await expect.poll(() => page.evaluate(() => window.packets.filter(packet => packet.type === 'response' && packet.id === 1234).length)).toBe(2)
+            result = await page.evaluate(() => ({ states: window.states, pending: Object.keys(window.tool.promises).length }))
+            expect(result).toEqual({ states: { first: { status: 'pending' }, second: { status: 'resolved', value: 1 } }, pending: 0 })
+          }
+          else if (scenario === 'destroy-pending') {
+            await page.evaluate(() => window.track('held', window.tool.postMessage({ type: 'hold' })))
+            await expect.poll(() => page.evaluate(() => window.packets.some(packet => packet.type === 'fixture-held'))).toBe(true)
+            await page.evaluate(() => window.tool.destroy())
+            const child = page.frames().find(frame => frame.url() === url)
+            await child.evaluate(() => window.Tool.postMessage({ type: 'response', data: 'late', id: window.held.id }))
+            await expect.poll(() => page.evaluate(() => window.packets.some(packet => packet.type === 'response' && packet.data === 'late'))).toBe(true)
+            result = await page.evaluate(() => ({ destroyed: window.tool.destroyed, state: window.states.held, pending: Object.keys(window.tool.promises).length }))
+            expect(result).toEqual({ destroyed: true, state: { status: 'pending' }, pending: 1 })
+          }
+          else if (scenario === 'foreign-message') {
+            expect(await page.evaluate(() => window.tool.injected)).toBe(false)
+            await page.evaluate((url) => {
+              const frame = document.createElement('iframe')
+              frame.id = 'foreign-frame'
+              frame.src = url
+              document.body.append(frame)
+            }, `${foreignOrigin}/iframe-baseline-foreign`)
+            await expect.poll(() => page.evaluate(() => window.tool.injected)).toBe(true)
+            const id = await page.evaluate(() => {
+              window.track('foreign', window.tool.postMessage({ type: 'hold' }))
+              return Number(Object.keys(window.tool.promises)[0])
+            })
+            const foreign = page.frames().find(frame => frame.url().endsWith('/iframe-baseline-foreign'))
+            await foreign.evaluate(id => parent.postMessage({ type: 'response', data: 'foreign response', id }, '*'), id)
+            await expect.poll(() => page.evaluate(() => window.states.foreign.status)).toBe('resolved')
+            const child = page.frames().find(frame => frame.url() === url)
+            await child.evaluate(() => window.Tool.inject())
+            await foreign.evaluate(() => parent.frames[0].postMessage({ type: 'commit', data: 'return "foreign command"', id: 17 }, '*'))
+            await expect.poll(() => page.evaluate(() => window.packets.some(packet => packet.type === 'response' && packet.data === 'foreign command'))).toBe(true)
+            result = await page.evaluate(() => ({ state: window.states.foreign, foreignResponse: window.packets.find(packet => packet.data === 'foreign response') }))
+            expect(result.state).toEqual({ status: 'resolved', value: 'foreign response' })
+            expect(result.foreignResponse.fromChild).toBe(false)
+            expect(result.foreignResponse.origin).toBe(foreignOrigin)
+            expect(await child.evaluate(() => window.received.some(packet => packet.type === 'commit' && !packet.fromParent))).toBe(true)
+          }
+          else if (scenario === 'clone-failure') {
+            await page.evaluate(() => {
+              window.cloneErrors = []
+              window.addEventListener('error', (event) => {
+                if (event.error?.name === 'DataCloneError') {
+                  window.cloneErrors.push(event.error.name)
+                  event.preventDefault()
+                }
+              })
+              window.track('deferredClone', window.tool.postMessage({ type: 'query', data: () => 'not cloneable' }))
+            })
+            const child = page.frames().find(frame => frame.url() === url)
+            await child.evaluate(() => window.Tool.inject())
+            await expect.poll(() => page.evaluate(() => window.cloneErrors.length)).toBe(1)
+            result = await page.evaluate(async () => {
+              const deferredId = Object.keys(window.tool.promises)[0]
+              const now = Date.now
+              Date.now = () => Number(deferredId) + 1
+              let failure
+              try {
+                await window.tool.postMessage({ type: 'query', data: () => 'also not cloneable' })
+              }
+              catch (error) { failure = error.name }
+              finally { Date.now = now }
+              return { failure, deferred: window.states.deferredClone, pending: Object.keys(window.tool.promises).length, uncaught: window.cloneErrors }
+            })
+            expect(result).toEqual({ failure: 'DataCloneError', deferred: { status: 'pending' }, pending: 2, uncaught: ['DataCloneError'] })
+          }
+          else {
+            const nextUrl = `${childOrigin}/iframe-baseline-child?auto=0&epoch=2`
+            await page.evaluate(url => window.targetFrame.src = url, nextUrl)
+            await expect.poll(() => page.evaluate(() => window.packets.some(packet => packet.type === 'fixture-ready' && packet.data.includes('epoch=2')))).toBe(true)
+            await page.evaluate(() => window.track('navigation', window.tool.commit(() => {
+              return 9
+            })))
+            const child = page.frames().find(frame => frame.url() === nextUrl)
+            await expect.poll(() => child.evaluate(() => window.received.some(packet => packet.type === 'commit'))).toBe(true)
+            await child.evaluate(() => window.Tool.inject())
+            const recovery = await page.evaluate(() => window.tool.commit(() => {
+              return 10
+            }))
+            result = await page.evaluate(() => ({ injected: window.tool.injected, state: window.states.navigation, pending: Object.keys(window.tool.promises).length }))
+            expect(result).toEqual({ injected: true, state: { status: 'pending' }, pending: 1 })
+            expect(recovery).toBe(10)
+          }
+          const packets = await page.evaluate(() => window.packets)
+          expect(packets.filter(packet => packet.fromChild).every(packet => packet.origin === childOrigin)).toBe(true)
+          await testInfo.attach('iframe-behavior', { contentType: 'application/json', body: JSON.stringify({ implementation: implementation.name, sha256: hash(implementation.code), relation, scenario, parentOrigin, childOrigin, foreignOrigin, result, packets, scope: 'Actual browser iframe WindowProxy/source/origin and postMessage. Local route fulfills immutable library bytes. Date.now is controlled for collision and distinct clone-failure IDs. Only the deliberate child error/DataCloneError is intercepted; known historical defects are asserted, not fixed or waived.' }) })
+        }
+        finally {
+          await page.evaluate(() => {
+            window.tool.destroy()
+            document.querySelectorAll('iframe').forEach(frame => frame.remove())
+          })
+        }
+      })
+    }
+  }
+}
diff --git a/test/iframe.test.js b/test/iframe.test.js
new file mode 100644
index 000000000..a5ed55072
--- /dev/null
+++ b/test/iframe.test.js
@@ -0,0 +1,162 @@
+import assert from 'node:assert/strict'
+// eslint-disable-next-line test/no-import-node-test -- Repository Node runner.
+import test from 'node:test'
+import { iframeEnvironment, iframeHistorical } from './helpers/iframe.js'
+
+const implementations = (await iframeHistorical()).filter(item => item.global !== 'ArtplayerHelperIframe')
+const flush = () => new Promise(resolve => setImmediate(resolve))
+function observe(promise) {
+  const state = { status: 'pending' }
+  promise.then(value => Object.assign(state, { status: 'resolved', value }), error => Object.assign(state, { status: 'rejected', error: error.message }))
+  return state
+}
+function setup(implementation, injected = true) {
+  const env = iframeEnvironment(implementation)
+  const instance = new env.Factory({ iframe: new env.Frame(), url: '/first' })
+  if (injected)
+    env.dispatch({ type: 'inject' })
+  return { ...env, instance }
+}
+
+for (const implementation of implementations) {
+  test(`Iframe ${implementation.name}: same-millisecond requests overwrite a pending callback`, async () => {
+    const env = setup(implementation)
+    const first = observe(env.instance.postMessage({ type: 'one', data: 1 }))
+    const second = observe(env.instance.postMessage({ type: 'two', data: 2 }))
+    assert.deepEqual(env.sent.map(item => item.packet.id), [1234, 1234])
+    assert.equal(Object.keys(env.instance.promises).length, 1)
+    env.dispatch({ type: 'response', data: 'first response', id: 1234 })
+    await flush()
+    assert.deepEqual(first, { status: 'pending' })
+    assert.deepEqual(second, { status: 'resolved', value: 'first response' })
+    env.instance.destroy()
+  })
+
+  test(`Iframe ${implementation.name}: destroy retains already-sent pending requests`, async () => {
+    const env = setup(implementation)
+    const state = observe(env.instance.postMessage({ type: 'one', data: 1 }))
+    env.instance.destroy()
+    await flush()
+    assert.equal(state.status, 'pending')
+    assert.deepEqual(Object.keys(env.instance.promises), ['1234'])
+    assert.equal(env.handlers.get('message').size, 0)
+  })
+
+  test(`Iframe ${implementation.name}: destroy leaves injection polling until the old timer runs`, async () => {
+    const env = setup(implementation, false)
+    const state = observe(env.instance.postMessage({ type: 'one', data: 1 }))
+    assert.equal(env.timers.size, 1)
+    env.instance.destroy()
+    await flush()
+    assert.equal(state.status, 'pending')
+    const [id, timer] = [...env.timers][0]
+    assert.equal(timer.delay, 200)
+    env.timers.delete(id)
+    timer.callback()
+    await flush()
+    assert.deepEqual(state, { status: 'rejected', error: 'The instance has been destroyed' })
+    assert.equal(env.timers.size, 0)
+    assert.equal(env.sent.length, 0)
+  })
+
+  test(`Iframe ${implementation.name}: requests started after destroy reject without a timer`, async () => {
+    const env = setup(implementation)
+    env.instance.destroy()
+    await assert.rejects(env.instance.postMessage({ type: 'late' }), /The instance has been destroyed/)
+    assert.equal(env.timers.size, 0)
+    assert.equal(env.sent.length, 0)
+  })
+
+  test(`Iframe ${implementation.name}: distinct IDs settle out of order and errors retain their message`, async () => {
+    const env = setup(implementation)
+    const first = observe(env.instance.postMessage({ type: 'one' }))
+    env.now(1235)
+    const second = observe(env.instance.postMessage({ type: 'two' }))
+    env.dispatch({ type: 'error', data: 'remote failure', id: 1235 })
+    env.dispatch({ type: 'response', data: 7, id: 1234 })
+    await flush()
+    assert.deepEqual(first, { status: 'resolved', value: 7 })
+    assert.deepEqual(second, { status: 'rejected', error: 'remote failure' })
+    assert.equal(Object.keys(env.instance.promises).length, 0)
+    env.instance.destroy()
+  })
+
+  test(`Iframe ${implementation.name}: custom non-error response types remain part of the generic protocol`, async () => {
+    const env = setup(implementation)
+    const result = env.instance.postMessage({ type: 'custom-query' })
+    env.dispatch({ type: 'custom-result', data: { ok: true }, id: 1234 })
+    assert.deepEqual(await result, { ok: true })
+    env.instance.destroy()
+  })
+
+  test(`Iframe ${implementation.name}: malformed message data throws from the public receiver`, () => {
+    const env = setup(implementation)
+    assert.throws(() => env.dispatch(null), error => error.name === 'TypeError')
+    env.instance.destroy()
+  })
+
+  test(`Iframe ${implementation.name}: immediate send failure rejects but leaves its public record`, async () => {
+    const env = setup(implementation)
+    env.instance.$iframe.contentWindow.postMessage = () => {
+      throw new Error('clone failure')
+    }
+    await assert.rejects(env.instance.postMessage({ type: 'one' }), /clone failure/)
+    assert.deepEqual(Object.keys(env.instance.promises), ['1234'])
+    env.instance.destroy()
+  })
+
+  test(`Iframe ${implementation.name}: send failure after polling escapes while its promise stays pending`, async () => {
+    const env = setup(implementation, false)
+    const state = observe(env.instance.postMessage({ type: 'one' }))
+    env.dispatch({ type: 'inject' })
+    env.instance.$iframe.contentWindow.postMessage = () => {
+      throw new Error('late clone failure')
+    }
+    const [id, timer] = [...env.timers][0]
+    env.timers.delete(id)
+    assert.throws(() => timer.callback(), /late clone failure/)
+    await flush()
+    assert.equal(state.status, 'pending')
+    assert.deepEqual(Object.keys(env.instance.promises), ['1234'])
+    env.instance.destroy()
+  })
+
+  test(`Iframe ${implementation.name}: saved message receiver can still settle and notify after destroy`, async () => {
+    const env = setup(implementation)
+    const state = observe(env.instance.postMessage({ type: 'one' }))
+    const callback = env.instance.onMessage
+    let calls = 0
+    env.instance.message(() => calls++)
+    env.instance.destroy()
+    callback({ data: { type: 'response', data: 'late', id: 1234 } })
+    await flush()
+    assert.deepEqual(state, { status: 'resolved', value: 'late' })
+    assert.equal(calls, 1)
+  })
+
+  test(`Iframe ${implementation.name}: navigation retains the previous injected state`, () => {
+    const env = setup(implementation)
+    env.instance.$iframe.src = '/second'
+    observe(env.instance.postMessage({ type: 'before-second-inject' }))
+    assert.equal(env.instance.injected, true)
+    assert.equal(env.sent.length, 1)
+    assert.equal(env.timers.size, 0)
+    assert.equal(env.instance.url, '/first')
+    env.instance.destroy()
+  })
+
+  test(`Iframe ${implementation.name}: repeated child inject repeats handshake but deduplicates its DOM listener`, () => {
+    const env = iframeEnvironment(implementation, true)
+    env.Factory.inject()
+    env.Factory.inject()
+    assert.deepEqual(env.sent.map(item => item.packet.type), ['inject', 'inject'])
+    assert.equal(env.handlers.get('message').size, 1)
+  })
+
+  test(`Iframe ${implementation.name}: child errors send a packet then reject and later commands still run`, async () => {
+    const env = iframeEnvironment(implementation, true)
+    await assert.rejects(env.Factory.onMessage({ data: { type: 'commit', data: 'throw new Error("child failure")', id: 1 } }), /child failure/)
+    await env.Factory.onMessage({ data: { type: 'commit', data: 'return 9', id: 2 } })
+    assert.deepEqual(JSON.parse(JSON.stringify(env.sent)), [{ packet: { type: 'error', data: 'child failure', id: 1 }, origin: '*' }, { packet: { type: 'response', data: 9, id: 2 }, origin: '*' }])
+  })
+}