{
  "verified_date": "2026-10-21",
  "unique_events": 5,
  "unique_contacts": 4,
  "events": [
    {
      "event": "E01",
      "contact": "C01",
      "fault": "none"
    },
    {
      "event": "E02",
      "contact": "C02",
      "fault": "503_before_write"
    },
    {
      "event": "E03",
      "contact": "C03",
      "fault": "disconnect_after_commit"
    },
    {
      "event": "E04",
      "contact": "C04",
      "fault": "redeliver_after_200"
    },
    {
      "event": "E05",
      "contact": "C01",
      "fault": "new_event_same_contact"
    }
  ],
  "limitations": "Local loopback HTTP and in-memory SQLite only; no email sending, vendor test, concurrency, crash recovery, retry timing or remote atomicity tested.",
  "runs": [
    {
      "mode": "append_every_request",
      "http_requests": 8,
      "action_rows": 7,
      "duplicate_action_rows": 2,
      "rows_by_event": {
        "E01": 1,
        "E02": 1,
        "E03": 2,
        "E04": 2,
        "E05": 1
      },
      "client_observations": [
        {
          "event": "E01",
          "result": "200"
        },
        {
          "event": "E02",
          "result": "503"
        },
        {
          "event": "E02",
          "result": "200"
        },
        {
          "event": "E03",
          "result": "unknown_no_response"
        },
        {
          "event": "E03",
          "result": "200"
        },
        {
          "event": "E04",
          "result": "200"
        },
        {
          "event": "E04",
          "result": "200"
        },
        {
          "event": "E05",
          "result": "200"
        }
      ],
      "receiver_trace": [
        {
          "event": "E01",
          "attempt": 1,
          "write": "committed",
          "response": "200"
        },
        {
          "event": "E02",
          "attempt": 1,
          "response": "503",
          "write": "none"
        },
        {
          "event": "E02",
          "attempt": 2,
          "write": "committed",
          "response": "200"
        },
        {
          "event": "E03",
          "attempt": 1,
          "write": "committed",
          "response": "connection_closed_without_response"
        },
        {
          "event": "E03",
          "attempt": 2,
          "write": "committed",
          "response": "200"
        },
        {
          "event": "E04",
          "attempt": 1,
          "write": "committed",
          "response": "200"
        },
        {
          "event": "E04",
          "attempt": 2,
          "write": "committed",
          "response": "200"
        },
        {
          "event": "E05",
          "attempt": 1,
          "write": "committed",
          "response": "200"
        }
      ]
    },
    {
      "mode": "unique_action_key",
      "http_requests": 8,
      "action_rows": 5,
      "duplicate_action_rows": 0,
      "rows_by_event": {
        "E01": 1,
        "E02": 1,
        "E03": 1,
        "E04": 1,
        "E05": 1
      },
      "client_observations": [
        {
          "event": "E01",
          "result": "200"
        },
        {
          "event": "E02",
          "result": "503"
        },
        {
          "event": "E02",
          "result": "200"
        },
        {
          "event": "E03",
          "result": "unknown_no_response"
        },
        {
          "event": "E03",
          "result": "200"
        },
        {
          "event": "E04",
          "result": "200"
        },
        {
          "event": "E04",
          "result": "200"
        },
        {
          "event": "E05",
          "result": "200"
        }
      ],
      "receiver_trace": [
        {
          "event": "E01",
          "attempt": 1,
          "write": "committed",
          "response": "200"
        },
        {
          "event": "E02",
          "attempt": 1,
          "response": "503",
          "write": "none"
        },
        {
          "event": "E02",
          "attempt": 2,
          "write": "committed",
          "response": "200"
        },
        {
          "event": "E03",
          "attempt": 1,
          "write": "committed",
          "response": "connection_closed_without_response"
        },
        {
          "event": "E03",
          "attempt": 2,
          "write": "duplicate_suppressed",
          "response": "200"
        },
        {
          "event": "E04",
          "attempt": 1,
          "write": "committed",
          "response": "200"
        },
        {
          "event": "E04",
          "attempt": 2,
          "write": "duplicate_suppressed",
          "response": "200"
        },
        {
          "event": "E05",
          "attempt": 1,
          "write": "committed",
          "response": "200"
        }
      ]
    }
  ]
}