curl -X GET "https://vzguoukmiwxvqdnabfma.supabase.co/functions/v1/api/products/123e4567-e89b-12d3-a456-426614174000" \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Accept-Version: 1.0"

{
  "success": true,
  "data": {
    "id": "123e4567-e89b-12d3-a456-426614174000",
    "title": "Example Book Title",
    "subtitle": "A Comprehensive Guide",
    "isbn13": "9781234567890",
    "isbn10": "1234567890",
    "publishing_status_id": "status-uuid",
    "format_id": "format-uuid",
    "license_id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee",
    "license_name": "Example License",
    "license_badge_colour": "#7C3AED",
    "page_count": 350,
    "publication_date": "2024-06-01",
    "product_territories": [],
    "product_sales_rights": [],
    "collateral": [],
    "created_at": "2024-01-01T00:00:00Z",
    "updated_at": "2024-01-01T00:00:00Z"
  }
}