curl --request POST \
  --url http://localhost:3000/v1/products/{id}/relocate \
  --header 'Content-Type: application/json' \
  --data '
{
  "target_slot_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
'

{
  "success": true,
  "relocated_count": 123,
  "target_slot": {
    "id": "<string>",
    "location_code": "<string>"
  }
}