💥 Includes input/output for nexus op describe JSON

[S15]

What changed?

Includes input and output for nexus operation describe json output. Matches activity describe.

This changes the JSON output, moving the existing output under the 'info' property and including top-level input, result or failure fields.

This also changes the --raw output to include the Info wrapper.

Checklist

Stability

• Breaking changes are marked with 💥 in the PR title and release notes
• Changes to JSON output (-o json / -o jsonl) are treated as breaking changes

Design

• This feature does not depend on Cloud-only APIs or behavior (it works against an OSS server)

Behavior

• Results go to stdout; errors and warnings go to stderr
• Error messages are lowercase with no trailing punctuation

Tests

• Added functional test(s) (SharedServerSuite)
• Added unit test(s) (func TestXxx) where applicable

Manual tests

Happy path

temporal nexus operation describe \
  --operation-id myOperationId \
  --output json

Successful Operation:

{
  "runId": "...",
  "info": {
    "operationId": "myOperationId",
    "runId": "...",
    "endpoint": "myEndpoint",
    "service": "myService",
    "operation": "myOperation",
    "status": "NEXUS_OPERATION_EXECUTION_STATUS_COMPLETED",
    "attempt": 1,
    "scheduleTime": "2026-10-02T22:11:15.505571Z",
    "closeTime": "2026-10-02T22:11:17.524073Z",
    "lastAttemptCompleteTime": "2026-10-02T22:11:15.512824Z",
    "executionDuration": "2.018502s",
    "requestId": "...",
    "operationToken": "...",
    "stateTransitionCount": "3",
    "searchAttributes": {},
    "userMetadata": {
      "summary": "My test operation"
    },
    "links": [
      {
        "workflowEvent": {
          "namespace": "default",
          "workflowId": "...",
          "runId": "...",
          "eventRef": {
            "eventId": "1",
            "eventType": "EVENT_TYPE_WORKFLOW_EXECUTION_STARTED"
          }
        }
      }
    ],
    "stateSizeBytes": "1029"
  },
  "input": {
    "Name": "World"
  },
  "result": {
    "Greeting": "Hello World"
  }
}

Failed operation:

{
  "runId": "...",
  "info": {
    "operationId": "myOperationId",
    "runId": "...",
    "endpoint": "myEndpoint",
    "service": "myService",
    "operation": "myOperation",
    "status": "NEXUS_OPERATION_EXECUTION_STATUS_FAILED",
    "attempt": 1,
    "scheduleTime": "2026-10-02T22:18:49.121318Z",
    "closeTime": "2026-10-02T22:18:49.125985Z",
    "lastAttemptCompleteTime": "2026-10-02T22:18:49.125985Z",
    "lastAttemptFailure": {
      "message": "expected failure",
      "source": "GoSDK",
      "applicationFailureInfo": {
        "type": "OperationError",
        "nonRetryable": true
      }
    },
    "executionDuration": "0.004667s",
    "requestId": "...",
    "stateTransitionCount": "2",
    "searchAttributes": {},
    "userMetadata": {
      "summary": "My failing operation"
    },
    "stateSizeBytes": "811"
  },
  "input": {
    "Reason": "expected failure"
  },
  "failure": {
    "message": "expected failure",
    "source": "GoSDK",
    "applicationFailureInfo": {
      "type": "OperationError",
      "nonRetryable": true
    }
  },
}

[ks-temporal]

I approved the code changes. Since this changes the cli output, it will be useful to show a sample test commands and output in the PR description, as recommended by the PR template. If you decide to do this, please update the PR description with the example before merge. Thanks.