feat(seo): add geo coordinates to LocalBusiness schema

Geocoded from the confirmed address (Calle Borde Alegre, 1, 29014
Málaga) via OpenStreetMap/Nominatim.

src/layouts/MainLayout.astro

@@ -60,7 +60,7 @@ const baseStructuredData = {
       itemOffered: { '@type': 'Service', name: 'Catering para reuniones familiares' },
     },
   ],
-  // Verified business address (owner-confirmed). Geo coordinates not confirmed — left out.
+  // Verified business address (owner-confirmed).
   address: {
     '@type': 'PostalAddress',
     streetAddress: 'Calle Borde Alegre, 1',
@@ -69,6 +69,12 @@ const baseStructuredData = {
     addressRegion: 'Málaga',
     addressCountry: 'ES',
   },
+  // Geocoded from the address above via OpenStreetMap/Nominatim.
+  geo: {
+    '@type': 'GeoCoordinates',
+    latitude: 36.7507347,
+    longitude: -4.4213623,
+  },
   // Matches the confirmed service area set on Google Business Profile.
   areaServed: [
     { '@type': 'City', name: 'Málaga' },