{
  "schema": "limited-candidate-observation-v1",
  "version": "2.5.1",
  "candidate": "r19",
  "status": "limited-trial-not-stable-release",
  "fullAcceptancePassed": false,
  "scopeChange": "User requested no excessive testing; first two preassigned natural blocks only, no outcome-based replay or replacement.",
  "runtimeFrozenAt": "2026-10-06T17:58:27.827Z",
  "naturalSummaryAt": "2026-10-07T04:09:48.640Z",
  "naturalSummarySha256": "38cb3bf5b04a4251e4b4c260628f30e8d4e4bb7167101ae6a81f697348fae174",
  "natural": {
    "plannedThisReducedRun": 4,
    "recorded": 4,
    "valid": 4,
    "highestTier": "AVC 1080P60, quality 116, at least 9 Mbps, at most 1000 views",
    "measurementRevision": "displayed-frame-coverage-v3",
    "own": {
      "completed": 2,
      "smooth": 2,
      "startupHostMs": [6385, 11139],
      "stallMs": 0,
      "freezeMs": 0,
      "unexpectedPauseMs": 0
    },
    "a097": {
      "completed": 2,
      "smooth": 1,
      "startupHostMs": [5658, 11391],
      "stallMs": 512,
      "freezeMs": 2013,
      "unexpectedPauseMs": 0
    },
    "oldPrimaryGate": false,
    "oldDeliveryGate": false
  },
  "controlled": {
    "protocol": "startup-future-native-diagnosis-v1",
    "baselineStatus": "observation-incomplete",
    "candidateStatus": "observation-incomplete",
    "passed": false,
    "baselineRecordedStartupReload": true,
    "candidateRecordedStartupReload": false,
    "baselineFirstFrameObserved": false,
    "candidateFirstDisplayedHostMs": 23343,
    "limits": [
      "Reload observer became ready after the first injected fault in both arms.",
      "XHR abort stack classification may confuse native delegation with extension action.",
      "Candidate generic pre-play recovery command was blocked by content guard, but the no-command gate failed.",
      "Real third-host data and later frames were observed, but the stricter same-host association gate was not met.",
      "Warm controlled observations are not fresh-video acceptance or a causal speed comparison."
    ]
  },
  "offlineBeforeFreeze": {"browserPassed": 501, "browserTotal": 501, "mobileScriptPassed": 27, "mobileScriptTotal": 27},
  "notExecutedInReducedScope": ["remaining four short trials", "long-video cohort", "active-close/new-video lifecycle", "final native-popup and BFCache acceptance", "physical iPhone/Shadowrocket validation"],
  "normalBrowserModified": false,
  "stableWebsiteDownloadReplaced": false,
  "guaranteeAllVideosSmooth": false
}