Historical interrupted-call replay test

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{
  "schemaVersion": 1,
  "publicSummaryVersion": "2026-09-30",
  "classification": "PUBLIC",
  "title": "Historical interrupted-call replay test",
  "summary": "On 28 July 2026, a laboratory Claude Code session survived a forced stop and resume. Its records reconciled, and a completed interrupted response was replayed without being billed again. The test also detected deliberately degraded replay and record behavior. The result depends on the client returning for the held response; it is not a promise about every agent’s retry behavior. The specimen’s task outcome was reported separately and did not determine whether the infrastructure test passed.",
  "date": "28 July 2026; re-run 13 October 2026",
  "scope": "Laboratory or bench evidence; production behavior is not inferred from it.",
  "result": "On 28 July 2026, a laboratory Claude Code session survived a forced stop and resume. Its records reconciled, and a completed interrupted response was replayed without being billed again. The test also detected deliberately degraded replay and record behavior. The result depends on the client returning for the held response; it is not a promise about every agent’s retry behavior. The specimen’s task outcome was reported separately and did not determine whether the infrastructure test passed.",
  "sections": [
    {
      "title": "The 13 October 2026 re-run",
      "items": [
        {
          "id": "rerun-2026-10-13",
          "title": "Paid re-run with production gateway source",
          "text": "On 13 October 2026 the test re-ran on the bench with gateway and engine source identical to production. In the passing run the retry was served from the store, citing the interrupted call, and 24,678 tokens were excluded from spend; the deliberately broken control run failed exactly the ledger checks, as it must. An earlier run that day did not replay: Claude Code rebuilt its request after a stall of 5 minutes 44 seconds, which the gateway treated as new work and billed once.",
          "status": "Recorded result: green",
          "date": "13 October 2026",
          "scope": "Laboratory or bench evidence with production gateway source; one client, one model, one day.",
          "limitation": "Whether a client re-sends the same request after a resume is its own behavior; a rebuilt request is new work."
        }
      ]
    }
  ],
  "currentDeployment": "Not independently verified by this historical evidence.",
  "canonical": "/evidence/phase-3"
}

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SHA-256 9f7f65ee45bfcd67bf920bed3722d02b69be0574fd4b5027b8f72cdcf807a969