List templates

curl https://api.craftkit.dev/v1/templates \
  -H "Authorization: Bearer $CRAFTKIT_API_KEY"

{
  "templates": [
    {
      "id": "…",
      "name": "Charter Handover",
      "slug": "charter-handover",
      "description": null,
      "templateType": "document",
      "currentVersionNumber": 2,
      "published": true,
      "createdAt": "2026-05-01T09:00:00.000Z",
      "updatedAt": "2026-06-01T12:00:00.000Z"
    }
  ]
}