List embed renders

curl "https://api.craftkit.dev/v1/embed/renders?status=succeeded&limit=50" \
  -H "Authorization: Bearer $CRAFTKIT_API_KEY"

{
  "renders": [
    {
      "id": "0193c2c3-...",
      "status": "succeeded",
      "source": "form",
      "templateId": "0193c2c3-...",
      "templateName": "Charter Handover",
      "inputData": { "customer": { "name": "Acme Corp" } },
      "downloadUrl": "https://cdn.craftkit.dev/renders/0193c2c3-....pdf",
      "errorMessage": null,
      "durationMs": 1820,
      "createdAt": "2026-06-05T10:00:00.000Z",
      "completedAt": "2026-06-05T10:00:02.000Z"
    }
  ],
  "limit": 50,
  "offset": 0
}