{
  "startedAt": "2026-09-11T09:10:42.187Z",
  "pollIntervalMs": 100,
  "clock": "same Node monotonic clock for both event observations",
  "event": "First external observation of the fully loaded requested generation, followed by first external observation of committed applied_version reaching that exact generation",
  "limitation": "Observation time is not the exact database commit instant. Queue readiness may precede its first observation by a polling interval; no historical missing observation is invented. SQL state timestamps retain their original transaction semantics.",
  "samples": [
    {
      "candidate": "before-d11",
      "workload": "history-10y",
      "targetGeneration": 2609,
      "firstObservedAt": "2026-09-11T09:11:45.290Z",
      "firstObservedMs": 63187.158,
      "precedingObservationMs": 63080.7594,
      "firstQueryMs": 1.8905000000013388,
      "completed": false
    },
    {
      "candidate": "repaired",
      "workload": "history-10y",
      "targetGeneration": 2609,
      "firstObservedAt": "2026-09-11T09:17:33.792Z",
      "firstObservedMs": 411689.2747,
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      "completed": true,
      "completionObservedAt": "2026-09-11T09:18:28.792Z",
      "completionObservedMs": 466688.3516,
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      "maxPollingGapMs": 121.41209999995772,
      "completionQueryMs": 1.9992999999667518
    },
    {
      "candidate": "before-d11",
      "workload": "history-1y",
      "targetGeneration": 260,
      "firstObservedAt": "2026-09-11T09:20:38.940Z",
      "firstObservedMs": 596837.1168,
      "precedingObservationMs": 596732.4682,
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      "completed": true,
      "completionObservedAt": "2026-09-11T09:20:47.262Z",
      "completionObservedMs": 605159.4552,
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      "stateApplyMs": 7580.216,
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      "completionQueryMs": 1.865999999921769
    },
    {
      "candidate": "repaired",
      "workload": "history-1y",
      "targetGeneration": 260,
      "firstObservedAt": "2026-09-11T09:21:47.046Z",
      "firstObservedMs": 664942.5818,
      "precedingObservationMs": 664835.1533,
      "firstQueryMs": 1.775000000023283,
      "completed": true,
      "completionObservedAt": "2026-09-11T09:21:53.008Z",
      "completionObservedMs": 670904.4908,
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      "stateApplyMs": 5321.64,
      "maxPollingGapMs": 121.41209999995772,
      "completionQueryMs": 1.77620000008028
    },
    {
      "candidate": "before-d11",
      "workload": "history-4y",
      "targetGeneration": 1043,
      "firstObservedAt": "2026-09-11T09:23:20.130Z",
      "firstObservedMs": 758026.935,
      "precedingObservationMs": 757922.0152,
      "firstQueryMs": 1.8351000000257045,
      "completed": true,
      "completionObservedAt": "2026-09-11T09:23:58.366Z",
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      "completionQueryMs": 1.8114000000059605
    },
    {
      "candidate": "repaired",
      "workload": "history-4y",
      "targetGeneration": 1043,
      "firstObservedAt": "2026-09-11T09:25:58.266Z",
      "firstObservedMs": 916162.4076,
      "precedingObservationMs": 916055.0026,
      "firstQueryMs": 1.6582000000635162,
      "completed": true,
      "completionObservedAt": "2026-09-11T09:26:18.637Z",
      "completionObservedMs": 936533.9424,
      "observedCompletionMs": 20371.534800000023,
      "precedingCompletionObservationMs": 936429.2403,
      "stateApplyMs": 18456.22,
      "maxPollingGapMs": 121.41209999995772,
      "completionQueryMs": 1.6419000000460073
    },
    {
      "candidate": "before-d11",
      "workload": "history-10y",
      "targetGeneration": 2609,
      "firstObservedAt": "2026-09-11T09:30:04.613Z",
      "firstObservedMs": 1162509.8232,
      "precedingObservationMs": 1162403.4686,
      "firstQueryMs": 1.7767999998759478,
      "completed": false
    },
    {
      "candidate": "repaired",
      "workload": "history-10y",
      "targetGeneration": 2609,
      "firstObservedAt": "2026-09-11T09:35:53.568Z",
      "firstObservedMs": 1511464.4276,
      "precedingObservationMs": 1511342.5182,
      "firstQueryMs": 1.5028999999631196,
      "completed": true,
      "completionObservedAt": "2026-09-11T09:36:48.024Z",
      "completionObservedMs": 1565920.6388,
      "observedCompletionMs": 54456.21120000002,
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      "stateApplyMs": 49471.581,
      "maxPollingGapMs": 121.41209999995772,
      "completionQueryMs": 1.3767000001389533
    }
  ],
  "missed": [
    {
      "candidate": "repaired",
      "workload": "history-4y",
      "reason": "Target already applied when observer first saw this fixture; no elapsed time inferred"
    }
  ],
  "errors": [],
  "finishedAt": "2026-09-11T09:38:18.646Z",
  "evidenceSource": {
    "sha256": "c98a45c0837bf13da6b2c3a7e81200a57fe267c7e2b83ec2b1dd6375e37dff13",
    "scriptSha256": "eefea0bbeb476326679dd80fe6f030b0fcefc3a0b606c9d2ad72893d269d2b7d",
    "candidate": "8a30feb5feea9c4e5033a4331d8720f5eac84a63",
    "reference": "b0fa93ec97fab41c6bcbc59bd096f3e1926535fd"
  }
}