curl --request GET \
  --url https://your-instance.example.com/api/conversation/{conversationId}/messages \
  --header 'Authorization: Bearer <token>'

{
  "messages": [
    {
      "_id": "67e0a0b0c0d0e0f0a0b0c0d0",
      "body": "Hi! How can we help?",
      "senderType": "AI",
      "direction": "outbound",
      "createdAt": "2026-05-18T13:30:00.000Z"
    }
  ],
  "messageCount": 17,
  "callCount": 1,
  "resolution": {
    "isResolved": true,
    "resolvedAt": "2026-05-18T14:10:00.000Z",
    "resolvedBy": {
      "userId": "65b1f0a2c3d4e5f6a7b8c9d0",
      "fullName": "Alice Rivera"
    },
    "csatRating": 5,
    "csatFeedback": "Great help!",
    "csatSubmittedAt": "2026-05-18T14:12:00.000Z"
  }
}