AFTER — real MCP runtime transcript
Commit: db17cb7514f17a04eba7305e6be29ff5cbac2743
Environment: Linux; isolated T3 development server; fresh synthetic data.
Driver: deterministic ACP parent and child; actual authenticated MCP HTTP calls.
No mocked server methods or test harness.
orchestrator_capabilities called before delegate_task.

ACP {"event": "child-response", "text": "DONE"}

>>> delegate_task
{
  "task": "Reply DONE.",
  "title": "DONE child",
  "mode": "wait",
  "timeoutMs": 45000,
  "target": {
    "providerInstanceId": "evidence",
    "model": "proof"
  }
}
<<< actual MCP response
{
  "taskId": "node:delegated-task:command%3Amcp%3A1cf78c80-d23e-407d-8817-46aae6b2e667%3Adelegate-task%3Ac3713a0f-1ea5-4270-a49b-b284f47e0e6e",
  "childThreadId": "thread:delegated-task:command%3Amcp%3A1cf78c80-d23e-407d-8817-46aae6b2e667%3Adelegate-task%3Ac3713a0f-1ea5-4270-a49b-b284f47e0e6e",
  "link": "[DONE child](t3-thread://v2/472fe8e2-500a-49e6-8bb2-a57ae79292d5/thread:delegated-task:command%3Amcp%3A1cf78c80-d23e-407d-8817-46aae6b2e667%3Adelegate-task%3Ac3713a0f-1ea5-4270-a49b-b284f47e0e6e)",
  "childRunId": "run:thread:thread%3Adelegated-task%3Acommand%253Amcp%253A1cf78c80-d23e-407d-8817-46aae6b2e667%253Adelegate-task%253Ac3713a0f-1ea5-4270-a49b-b284f47e0e6e:ordinal:1",
  "childNodeId": "node:delegated-task:command%3Amcp%3A1cf78c80-d23e-407d-8817-46aae6b2e667%3Adelegate-task%3Ac3713a0f-1ea5-4270-a49b-b284f47e0e6e",
  "status": "completed",
  "workState": "result_available",
  "hasPendingChildRuns": false,
  "latestTerminalRunId": "run:thread:thread%3Adelegated-task%3Acommand%253Amcp%253A1cf78c80-d23e-407d-8817-46aae6b2e667%253Adelegate-task%253Ac3713a0f-1ea5-4270-a49b-b284f47e0e6e:ordinal:1",
  "latestTerminalStatus": "completed",
  "latestTerminalSummary": null,
  "latestTerminalResultContextTransferId": null,
  "providerInstanceId": "evidence",
  "model": "proof",
  "executedModel": null,
  "options": [],
  "summary": "DONE",
  "resultContextTransferId": null,
  "hasPendingQuestion": false,
  "pendingApproval": null,
  "waitTimedOut": false
}
isError: false

>>> t3_thread_send
{
  "threadId": "thread:delegated-task:command%3Amcp%3A1cf78c80-d23e-407d-8817-46aae6b2e667%3Adelegate-task%3Ac3713a0f-1ea5-4270-a49b-b284f47e0e6e",
  "message": "Continue.",
  "mode": "steer"
}
<<< actual MCP response
{
  "_tag": "OrchestratorMcpFailure",
  "code": "thread_not_sendable",
  "message": "Thread thread:delegated-task:command%3Amcp%3A1cf78c80-d23e-407d-8817-46aae6b2e667%3Adelegate-task%3Ac3713a0f-1ea5-4270-a49b-b284f47e0e6e has no running turn that can be steered. Send with mode: \"auto\" or \"queue\" to start a new turn there."
}
isError: true

>>> t3_thread_send
{
  "threadId": "thread:delegated-task:command%3Amcp%3A1cf78c80-d23e-407d-8817-46aae6b2e667%3Adelegate-task%3Ac3713a0f-1ea5-4270-a49b-b284f47e0e6e",
  "message": "Continue.",
  "mode": "restart"
}
<<< actual MCP response
{
  "_tag": "OrchestratorMcpFailure",
  "code": "thread_not_sendable",
  "message": "Thread thread:delegated-task:command%3Amcp%3A1cf78c80-d23e-407d-8817-46aae6b2e667%3Adelegate-task%3Ac3713a0f-1ea5-4270-a49b-b284f47e0e6e has no running turn that can be restarted. Send with mode: \"auto\" or \"queue\" to start a new turn there."
}
isError: true

>>> t3_thread_send
{
  "threadId": "thread:delegated-task:command:mcp:1cf78c80-d23e-407d-8817-46aae6b2e667:delegate-task:c3713a0f-1ea5-4270-a49b-b284f47e0e6e",
  "message": "Continue.",
  "mode": "auto"
}
<<< actual MCP response
{
  "_tag": "OrchestratorMcpFailure",
  "code": "thread_not_found",
  "message": "Thread thread:delegated-task:command:mcp:1cf78c80-d23e-407d-8817-46aae6b2e667:delegate-task:c3713a0f-1ea5-4270-a49b-b284f47e0e6e was not found. Did you mean `thread:delegated-task:command%3Amcp%3A1cf78c80-d23e-407d-8817-46aae6b2e667%3Adelegate-task%3Ac3713a0f-1ea5-4270-a49b-b284f47e0e6e`?"
}
isError: true

>>> t3_thread_send
{
  "threadId": "thread:delegated-task:command%3Amcp%3A1cf78c80-d23e-407d-8817-46aae6b2e667%3Adelegate-task%3Ac3713a0f-1ea5-4270-a49b-b284f47e0e6e",
  "message": "Reply DONE again.",
  "mode": "auto"
}
<<< actual MCP response
{
  "threadId": "thread:delegated-task:command%3Amcp%3A1cf78c80-d23e-407d-8817-46aae6b2e667%3Adelegate-task%3Ac3713a0f-1ea5-4270-a49b-b284f47e0e6e",
  "link": "[DONE child](t3-thread://v2/472fe8e2-500a-49e6-8bb2-a57ae79292d5/thread:delegated-task:command%3Amcp%3A1cf78c80-d23e-407d-8817-46aae6b2e667%3Adelegate-task%3Ac3713a0f-1ea5-4270-a49b-b284f47e0e6e)",
  "messageId": "message:mcp:1cf78c80-d23e-407d-8817-46aae6b2e667:thread-send:35459733-376d-4a53-8997-3c5f4b3f4981",
  "runId": "run:thread:thread%3Adelegated-task%3Acommand%253Amcp%253A1cf78c80-d23e-407d-8817-46aae6b2e667%253Adelegate-task%253Ac3713a0f-1ea5-4270-a49b-b284f47e0e6e:ordinal:2",
  "taskId": "node:delegated-task:command%3Amcp%3A1cf78c80-d23e-407d-8817-46aae6b2e667%3Athread-send%3A35459733-376d-4a53-8997-3c5f4b3f4981",
  "status": "starting",
  "delivery": "started"
}
isError: false

ACP {"event": "child-response", "text": "DONE"}

>>> t3_thread_wait
{
  "threadId": "thread:delegated-task:command%3Amcp%3A1cf78c80-d23e-407d-8817-46aae6b2e667%3Adelegate-task%3Ac3713a0f-1ea5-4270-a49b-b284f47e0e6e",
  "runId": "run:thread:thread%3Adelegated-task%3Acommand%253Amcp%253A1cf78c80-d23e-407d-8817-46aae6b2e667%253Adelegate-task%253Ac3713a0f-1ea5-4270-a49b-b284f47e0e6e:ordinal:2",
  "timeoutMs": 45000
}
<<< actual MCP response
{
  "threadId": "thread:delegated-task:command%3Amcp%3A1cf78c80-d23e-407d-8817-46aae6b2e667%3Adelegate-task%3Ac3713a0f-1ea5-4270-a49b-b284f47e0e6e",
  "runId": "run:thread:thread%3Adelegated-task%3Acommand%253Amcp%253A1cf78c80-d23e-407d-8817-46aae6b2e667%253Adelegate-task%253Ac3713a0f-1ea5-4270-a49b-b284f47e0e6e:ordinal:2",
  "status": "completed",
  "timedOut": false
}
isError: false

ACP {"event": "complete"}

ACP {"event": "child-response", "text": "DONE"}