curl --request PATCH \
  --url https://api.leanmcp.com/api/chat-messages/id/{id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "content": "Updated message content here",
  "metadata": {
    "edited": true,
    "editedAt": "2025-06-16T20:00:00Z"
  }
}
'

{
  "id": "<string>",
  "chatId": "c1a83d84-7154-464c-bd19-a9f10e0a067f",
  "userId": "<string>",
  "role": "system",
  "content": "<string>",
  "messageIndex": 1,
  "createdAt": "<string>",
  "updatedAt": "<string>",
  "metadata": {}
}