curl -X POST "https://api.scanova.io/theme/" \
  -H "Authorization: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Ocean Breeze",
    "config_json": { "color": { "accent": "#0077be", "background": "#f0f8ff" }, "font": { "heading": "Inter" } }
  }'

{
  "id": 7,
  "name": "Ocean Breeze",
  "slug": "user-42-ocean-breeze-a1b2c3",
  "description": "A cool blue palette.",
  "config_json": { "color": { "accent": "#0077be", "background": "#f0f8ff" }, "font": { "heading": "Inter" } },
  "schema_version": 2,
  "category_hints": ["website-url", "vcard"],
  "thumbnail_url": "https://cdn.scanova.io/themes/7/thumb.png",
  "is_system": false,
  "is_premium": false,
  "order": 0
}