{
  "streamInterrupted": {
    "contract": "AgentSessionViewModel",
    "sessionId": "scenario-stream-interrupted",
    "snapshot": {
      "mode": "work",
      "modelId": "openai:gpt-5.1-codex",
      "capabilities": { "text": true, "resume": true }
    },
    "status": "stopped",
    "events": [
      {
        "contract": "AgentSessionEvent",
        "eventId": "stream-status-running",
        "sessionId": "scenario-stream-interrupted",
        "sequence": 0,
        "idempotencyKey": "scenario-stream-interrupted:0",
        "occurredAt": "2026-08-02T01:00:00.000Z",
        "eventType": "status",
        "payload": { "status": "running" }
      },
      {
        "contract": "AgentSessionEvent",
        "eventId": "stream-message-partial",
        "sessionId": "scenario-stream-interrupted",
        "sequence": 1,
        "idempotencyKey": "scenario-stream-interrupted:1",
        "occurredAt": "2026-08-02T01:00:01.000Z",
        "eventType": "message",
        "payload": {
          "messageId": "stream-assistant-message",
          "role": "assistant",
          "operation": "append",
          "parts": [{ "type": "text", "text": "Partial response" }],
          "status": "streaming"
        }
      },
      {
        "contract": "AgentSessionEvent",
        "eventId": "stream-resumable",
        "sessionId": "scenario-stream-interrupted",
        "sequence": 2,
        "idempotencyKey": "scenario-stream-interrupted:2",
        "occurredAt": "2026-08-02T01:00:02.000Z",
        "eventType": "resume",
        "payload": { "resumable": true, "reason": "user_stopped" }
      },
      {
        "contract": "AgentSessionEvent",
        "eventId": "stream-status-stopped",
        "sessionId": "scenario-stream-interrupted",
        "sequence": 3,
        "idempotencyKey": "scenario-stream-interrupted:3",
        "occurredAt": "2026-08-02T01:00:03.000Z",
        "eventType": "status",
        "payload": { "status": "stopped", "stoppedAt": "2026-08-02T01:00:03.000Z", "durationMs": 3000 }
      }
    ],
    "lastSequence": 3,
    "resumable": true
  },
  "approvalWaiting": {
    "contract": "AgentSessionViewModel",
    "sessionId": "scenario-approval-waiting",
    "snapshot": {
      "mode": "work",
      "modelId": "openai:gpt-5.1-codex",
      "capabilities": { "tools": true, "approval": true, "resume": true }
    },
    "status": "waiting_approval",
    "events": [
      {
        "contract": "AgentSessionEvent",
        "eventId": "approval-tool-running",
        "sessionId": "scenario-approval-waiting",
        "sequence": 0,
        "idempotencyKey": "scenario-approval-waiting:0",
        "occurredAt": "2026-08-02T01:01:00.000Z",
        "eventType": "tool",
        "payload": { "toolCallId": "approval-tool", "toolName": "shell", "status": "running", "input": { "command": "npm test" } }
      },
      {
        "contract": "AgentSessionEvent",
        "eventId": "approval-requested",
        "sessionId": "scenario-approval-waiting",
        "sequence": 1,
        "idempotencyKey": "scenario-approval-waiting:1",
        "occurredAt": "2026-08-02T01:01:01.000Z",
        "eventType": "approval",
        "payload": { "approvalId": "approval-request", "toolCallId": "approval-tool", "status": "requested", "title": "Run tests" }
      },
      {
        "contract": "AgentSessionEvent",
        "eventId": "approval-resumable",
        "sessionId": "scenario-approval-waiting",
        "sequence": 2,
        "idempotencyKey": "scenario-approval-waiting:2",
        "occurredAt": "2026-08-02T01:01:02.000Z",
        "eventType": "resume",
        "payload": { "resumable": true, "reason": "approval_required" }
      },
      {
        "contract": "AgentSessionEvent",
        "eventId": "approval-status-waiting",
        "sessionId": "scenario-approval-waiting",
        "sequence": 3,
        "idempotencyKey": "scenario-approval-waiting:3",
        "occurredAt": "2026-08-02T01:01:03.000Z",
        "eventType": "status",
        "payload": { "status": "waiting_approval" }
      }
    ],
    "lastSequence": 3,
    "resumable": true
  },
  "toolFailed": {
    "contract": "AgentSessionViewModel",
    "sessionId": "scenario-tool-failed",
    "snapshot": {
      "mode": "work",
      "modelId": "openai:gpt-5.1-codex",
      "capabilities": { "tools": true }
    },
    "status": "failed",
    "events": [
      {
        "contract": "AgentSessionEvent",
        "eventId": "failed-tool",
        "sessionId": "scenario-tool-failed",
        "sequence": 0,
        "idempotencyKey": "scenario-tool-failed:0",
        "occurredAt": "2026-08-02T01:02:00.000Z",
        "eventType": "tool",
        "payload": { "toolCallId": "failed-tool-call", "toolName": "shell", "status": "failed", "input": { "command": "npm test" }, "output": "exit code 1", "error": "Tests failed" }
      },
      {
        "contract": "AgentSessionEvent",
        "eventId": "failed-error",
        "sessionId": "scenario-tool-failed",
        "sequence": 1,
        "idempotencyKey": "scenario-tool-failed:1",
        "occurredAt": "2026-08-02T01:02:01.000Z",
        "eventType": "error",
        "payload": { "code": "TOOL_EXECUTION_FAILED", "message": "Tests failed", "retryable": true, "sourceEventId": "failed-tool" }
      },
      {
        "contract": "AgentSessionEvent",
        "eventId": "failed-status",
        "sessionId": "scenario-tool-failed",
        "sequence": 2,
        "idempotencyKey": "scenario-tool-failed:2",
        "occurredAt": "2026-08-02T01:02:02.000Z",
        "eventType": "status",
        "payload": { "status": "failed", "failedAt": "2026-08-02T01:02:02.000Z", "durationMs": 2000 }
      }
    ],
    "lastSequence": 2,
    "resumable": false
  },
  "resumed": {
    "contract": "AgentSessionViewModel",
    "sessionId": "scenario-resumed",
    "snapshot": {
      "mode": "work",
      "modelId": "openai:gpt-5.1-codex",
      "capabilities": { "text": true, "resume": true }
    },
    "status": "completed",
    "events": [
      {
        "contract": "AgentSessionEvent",
        "eventId": "resumed-status-stopped",
        "sessionId": "scenario-resumed",
        "sequence": 0,
        "idempotencyKey": "scenario-resumed:0",
        "occurredAt": "2026-08-02T01:03:00.000Z",
        "eventType": "status",
        "payload": { "status": "stopped", "stoppedAt": "2026-08-02T01:03:00.000Z", "durationMs": 1000 }
      },
      {
        "contract": "AgentSessionEvent",
        "eventId": "resumed-available",
        "sessionId": "scenario-resumed",
        "sequence": 1,
        "idempotencyKey": "scenario-resumed:1",
        "occurredAt": "2026-08-02T01:03:01.000Z",
        "eventType": "resume",
        "payload": { "resumable": true, "reason": "user_stopped" }
      },
      {
        "contract": "AgentSessionEvent",
        "eventId": "resumed-status-queued",
        "sessionId": "scenario-resumed",
        "sequence": 2,
        "idempotencyKey": "scenario-resumed:2",
        "occurredAt": "2026-08-02T01:03:02.000Z",
        "eventType": "status",
        "payload": { "status": "queued" }
      },
      {
        "contract": "AgentSessionEvent",
        "eventId": "resumed-status-running",
        "sessionId": "scenario-resumed",
        "sequence": 3,
        "idempotencyKey": "scenario-resumed:3",
        "occurredAt": "2026-08-02T01:03:03.000Z",
        "eventType": "status",
        "payload": { "status": "running", "startedAt": "2026-08-02T01:03:03.000Z" }
      },
      {
        "contract": "AgentSessionEvent",
        "eventId": "resumed-message",
        "sessionId": "scenario-resumed",
        "sequence": 4,
        "idempotencyKey": "scenario-resumed:4",
        "occurredAt": "2026-08-02T01:03:04.000Z",
        "eventType": "message",
        "payload": { "messageId": "resumed-assistant-message", "role": "assistant", "operation": "append", "parts": [{ "type": "text", "text": "Recovered response" }], "status": "completed" }
      },
      {
        "contract": "AgentSessionEvent",
        "eventId": "resumed-status-completed",
        "sessionId": "scenario-resumed",
        "sequence": 5,
        "idempotencyKey": "scenario-resumed:5",
        "occurredAt": "2026-08-02T01:03:05.000Z",
        "eventType": "status",
        "payload": { "status": "completed", "completedAt": "2026-08-02T01:03:05.000Z", "durationMs": 2000 }
      }
    ],
    "lastSequence": 5,
    "resumable": false
  },
  "artifactCompleted": {
    "contract": "AgentSessionViewModel",
    "sessionId": "scenario-artifact-completed",
    "snapshot": {
      "mode": "work",
      "modelId": "openai:gpt-5.1-codex",
      "capabilities": { "artifacts": true }
    },
    "status": "completed",
    "events": [
      {
        "contract": "AgentSessionEvent",
        "eventId": "artifact-pending",
        "sessionId": "scenario-artifact-completed",
        "sequence": 0,
        "idempotencyKey": "scenario-artifact-completed:0",
        "occurredAt": "2026-08-02T01:04:00.000Z",
        "eventType": "artifact",
        "payload": { "artifactId": "generated-image", "name": "output.png", "kind": "image", "status": "pending" }
      },
      {
        "contract": "AgentSessionEvent",
        "eventId": "artifact-ready",
        "sessionId": "scenario-artifact-completed",
        "sequence": 1,
        "idempotencyKey": "scenario-artifact-completed:1",
        "occurredAt": "2026-08-02T01:04:01.000Z",
        "eventType": "artifact",
        "payload": { "artifactId": "generated-image", "name": "output.png", "kind": "image", "status": "ready", "mimeType": "image/png", "url": "https://example.test/output.png" }
      },
      {
        "contract": "AgentSessionEvent",
        "eventId": "artifact-status-completed",
        "sessionId": "scenario-artifact-completed",
        "sequence": 2,
        "idempotencyKey": "scenario-artifact-completed:2",
        "occurredAt": "2026-08-02T01:04:02.000Z",
        "eventType": "status",
        "payload": { "status": "completed", "completedAt": "2026-08-02T01:04:02.000Z", "durationMs": 2000 }
      }
    ],
    "lastSequence": 2,
    "resumable": false
  },
  "contextCompacted": {
    "contract": "AgentSessionViewModel",
    "sessionId": "scenario-context-compacted",
    "snapshot": {
      "mode": "work",
      "modelId": "openai:gpt-5.1-codex",
      "capabilities": { "text": true, "usage": true }
    },
    "status": "running",
    "events": [
      {
        "contract": "AgentSessionEvent",
        "eventId": "compacted-message",
        "sessionId": "scenario-context-compacted",
        "sequence": 0,
        "idempotencyKey": "scenario-context-compacted:0",
        "occurredAt": "2026-08-02T01:05:00.000Z",
        "eventType": "message",
        "payload": {
          "messageId": "compacted-assistant-message",
          "role": "assistant",
          "operation": "append",
          "parts": [{ "type": "text", "text": "Context compacted", "metadata": { "debugContext": { "contextUsage": { "compressed": true } } } }],
          "status": "completed"
        }
      },
      {
        "contract": "AgentSessionEvent",
        "eventId": "compacted-usage",
        "sessionId": "scenario-context-compacted",
        "sequence": 1,
        "idempotencyKey": "scenario-context-compacted:1",
        "occurredAt": "2026-08-02T01:05:01.000Z",
        "eventType": "usage",
        "payload": { "inputTokens": 12000, "outputTokens": 300, "totalTokens": 12300, "contextTokens": 24000, "contextWindow": 128000 }
      },
      {
        "contract": "AgentSessionEvent",
        "eventId": "compacted-status-running",
        "sessionId": "scenario-context-compacted",
        "sequence": 2,
        "idempotencyKey": "scenario-context-compacted:2",
        "occurredAt": "2026-08-02T01:05:02.000Z",
        "eventType": "status",
        "payload": { "status": "running" }
      }
    ],
    "lastSequence": 2,
    "resumable": false
  }
}