curl --request POST \
  --url https://api.gbase.ai/v1/robots/{ai_id}/realtime-session/save \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "session_id": "<string>",
  "messages": [
    {
      "role": "user",
      "content": "<string>",
      "timestamp": "<string>",
      "message_type": "audio_transcription",
      "tool_calls": [
        {}
      ]
    }
  ],
  "metadata": {}
}
'

{
  "success": true,
  "session_id": "<string>",
  "messages_saved": 123,
  "backend_session_id": "<string>"
}