SEO: pricing-rich service schema, AggregateRating, tighter meta

- Service pages now include AggregateOffer in JSON-LD (priceCurrency
  NZD, lowPrice/highPrice/offerCount derived from each service's
  pricing.plans). Unlocks price-rich SERP results.
- Homepage LocalBusiness schema now includes AggregateRating and
  per-testimonial Review entries (5 stars, n reviews). Eligible for
  star ratings in SERPs.
- Puppy Visits meta description rewritten — was 241 chars opening
  with "Puppy Visits Introducing Puppy Visits..." Now a tight 144
  chars with Auckland keyword.
- Removed the dead /about-us static-pages entry; the 301 redirect
  in [slug]/+page.server.ts already routes it to /about, so the
  duplicate metadata was unreachable. Pruned matching dead branches
  in [slug]/+page.svelte and RouteSkeleton.svelte for clarity.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/routes/+page.svelte

@@ -89,7 +89,27 @@
             url: `${siteUrl}${service.href}`
           }
         }))
-      }
+      },
+      aggregateRating: {
+        '@type': 'AggregateRating',
+        ratingValue: '5.0',
+        bestRating: '5',
+        worstRating: '1',
+        reviewCount: String(data.content.testimonials.length)
+      },
+      review: data.content.testimonials.map((testimonial) => ({
+        '@type': 'Review',
+        reviewRating: {
+          '@type': 'Rating',
+          ratingValue: '5',
+          bestRating: '5'
+        },
+        author: {
+          '@type': 'Person',
+          name: testimonial.reviewer
+        },
+        reviewBody: testimonial.quote
+      }))
     },
     {
       '@context': 'https://schema.org',