feat(seo): facts in src/data/business.ts, SEO + JSON-LD components in layout

- business.ts: single source of truth; unknown facts (city, area, prices,
  packages, phone, delivery time, experience, testimonials) are null and are
  skipped everywhere. faq.ts builds answers only from known facts.
- portfolio-meta.ts: data hook for real per-image alt texts.
- SEO.astro: title, description, canonical, Open Graph, Twitter, og:image
  (EXIF-free JPG via getImage, absolute URL).
- SchemaOrg.astro: @graph with WebSite, Person, ProfessionalService
  (sameAs, ReserveAction to the customer portal, offer catalog without
  prices), WebPage, optional FAQPage and BreadcrumbList.
- MainLayout: lang=sv, Swedish nav (adds Tjänster), consent banner and
  footer in Swedish, lyxlimo/karleksguiden line removed, info@ address.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WvE3C43Uwtv2vtnoFBLDw7

src/lib/url.ts

@@ -0,0 +1,8 @@
+// src/lib/url.ts
+// Gör om en byggsökväg till kanonisk form: "/", "/about", "/tjanster".
+// Klarar både build.format "file" (/about.html) och "directory" (/about/).
+export function normalizePath(p: string): string {
+  let out = p.replace(/\/index\.html$/, '/').replace(/\.html$/, '');
+  if (out.length > 1) out = out.replace(/\/+$/, '');
+  return out || '/';
+}