feat(seo): LocalBusiness + CollectionPage structured data schemas

- Add localBusinessSchema() with geo coords, phone, opening hours for
  Google Local Pack and Knowledge Panel visibility
- Add collectionPageSchema() with ItemList for article listing pages
- Inject LocalBusiness alongside Organization+WebSite in root layout
- Inject CollectionPage in /news hub page with article items

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/lib/seo.ts

@@ -114,6 +114,70 @@ export function organizationSchema(opts?: { logoUrl?: string; sameAs?: string[]
   };
 }
 
+export function localBusinessSchema(opts?: { logoUrl?: string; sameAs?: string[] }) {
+  const base = baseUrl();
+  return {
+    "@context": "https://schema.org",
+    "@type": "LocalBusiness",
+    "@id": `${base}/#local-business`,
+    name: "FLUX Srl",
+    legalName: "FLUX Srl",
+    url: base,
+    logo: opts?.logoUrl ? absoluteUrl(opts.logoUrl) : `${base}/flux-logo.png`,
+    description:
+      "Manufacturer of solid-state Radio Frequency (RF), Microwave, and Infrared industrial equipment since 1978.",
+    foundingDate: "1978",
+    founder: { "@type": "Person", name: "Patrizio Grando" },
+    address: {
+      "@type": "PostalAddress",
+      streetAddress: "Via Benedetto Marcello 32",
+      addressLocality: "Romano d'Ezzelino",
+      addressRegion: "Vicenza",
+      postalCode: "36060",
+      addressCountry: "IT",
+    },
+    geo: {
+      "@type": "GeoCoordinates",
+      latitude: 45.7836,
+      longitude: 11.7677,
+    },
+    telephone: "+39 0424 287 492",
+    email: "info@rf-flux.com",
+    openingHoursSpecification: {
+      "@type": "OpeningHoursSpecification",
+      dayOfWeek: ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday"],
+      opens: "08:00",
+      closes: "17:00",
+    },
+    areaServed: { "@type": "Place", name: "Worldwide" },
+    ...(opts?.sameAs ? { sameAs: opts.sameAs } : {}),
+  };
+}
+
+export function collectionPageSchema(opts: {
+  name: string;
+  description: string;
+  url: string;
+  items: { name: string; url: string; position: number }[];
+}) {
+  return {
+    "@context": "https://schema.org",
+    "@type": "CollectionPage",
+    name: opts.name,
+    description: opts.description,
+    url: opts.url,
+    mainEntity: {
+      "@type": "ItemList",
+      itemListElement: opts.items.map((item) => ({
+        "@type": "ListItem",
+        position: item.position,
+        url: item.url,
+        name: item.name,
+      })),
+    },
+  };
+}
+
 export function websiteSchema() {
   const base = baseUrl();
   return {