Add required Product schema image field for Google rich results

Fixes missing field image warning on Soul Maps Product structured data.

Author: thefirstspark

index.html

@@ -86,13 +86,18 @@
           "@type": "Product",
           "name": "Soul Maps",
           "description": "Personalized numerology and astrology soul map delivered as a private URL you keep forever.",
+          "image": [
+            "https://thefirstspark.shop/preview-soulmaps.png",
+            "https://thefirstspark.shop/og-home.png"
+          ],
           "brand": { "@id": "https://thefirstspark.shop/#organization" },
           "offers": {
             "@type": "Offer",
             "price": "22.00",
             "priceCurrency": "USD",
             "url": "https://whop.com/checkout/plan_anQKP3Pzf1cGm",
-            "availability": "https://schema.org/InStock"
+            "availability": "https://schema.org/InStock",
+            "priceValidUntil": "2027-12-31"
           }
         }
       ]