List results

curl -X GET "https://app.dacard.ai/api/results?productId=prod_abc&limit=20" \
  -H "Authorization: Bearer $DACARD_API_KEY"

{
  "results": [
    {
      "id": "scr_...",
      "productId": "prod_abc",
      "totalScore": 78,
      "stageName": "Scaling",
      "createdAt": "2026-04-29T08:00:00Z"
    }
  ],
  "nextCursor": "..."
}