Get agent thread

{
  "thread": {
    "id": "<string>",
    "title": "<string>",
    "status": "<string>",
    "scope": "document",
    "applicationId": "<string>",
    "sourceResumeId": "<string>",
    "workingResumeId": "<string>",
    "coverLetterId": "<string>",
    "aiProviderId": "<string>",
    "resumeName": "<string>",
    "coverLetterName": "<string>",
    "providerLabel": "<string>",
    "editsProposed": 1,
    "editsAccepted": 1,
    "activeRunId": "<string>",
    "lastMessageAt": "2026-08-10T12:00:00Z",
    "archivedAt": "2026-08-10T12:00:00Z",
    "deletedAt": "2026-08-10T12:00:00Z",
    "createdAt": "2026-08-10T12:00:00Z",
    "updatedAt": "2026-08-10T12:00:00Z"
  },
  "messages": [
    {
      "id": "<string>",
      "role": "system",
      "parts": [
        {
          "type": "<string>"
        }
      ],
      "metadata": null
    }
  ],
  "attachments": [
    {
      "id": "<string>",
      "threadId": "<string>",
      "messageId": "<string>",
      "filename": "<string>",
      "mediaType": "<string>",
      "size": 1,
      "storagePath": "<string>",
      "createdAt": "2026-08-10T12:00:00Z"
    }
  ],
  "document": {
    "kind": "resume",
    "id": "<string>",
    "name": "<string>",
    "locked": true
  },
  "isReadOnly": true
}

{
  "defined": true,
  "code": "<string>",
  "status": 1,
  "message": "<string>",
  "data": null
}