feat(seo): visual breadcrumb navigation on article + application pages

- Create Breadcrumbs.tsx server component — semantic <nav> + <ol>/<li>
  with aria-current, ChevronRight separators, Apple-clean styling
- Add breadcrumbs to news article hero overlay (reuses JSON-LD crumbs)
- Add breadcrumbs to application detail hero (passed as prop to client
  component)
- Refactor breadcrumb data into shared array for JSON-LD + visual nav

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

src/app/[locale]/applications/[slug]/page.tsx

@@ -158,24 +158,28 @@ export default async function ApplicationPage({ params }: { params: Promise<{ sl
   const images = getApplicationImages(slug);
 
   // 4. JSON-LD structured data — wrapped to never break the render.
+  const appTitle = data?.title || "FLUX Application";
+  const appUrl = `${baseUrl()}/${locale}/applications/${slug}`;
+  const crumbs = [
+    { name: "Home", url: `/${locale}` },
+    { name: "Applications", url: `/${locale}#applications-deep` },
+    { name: appTitle, url: `/${locale}/applications/${slug}` },
+  ];
+
   let jsonLd: object[] = [];
   try {
-    const url = `${baseUrl()}/${locale}/applications/${slug}`;
-    const title = data?.title || "FLUX Application";
     const description = data?.shortDescription || data?.subtitle || "";
     jsonLd = [
       productSchema({
-        name: title,
+        name: appTitle,
         description,
         imageUrl: images.heroImage || undefined,
         category: data?.category || "RF Industrial",
-        url,
+        url: appUrl,
       }),
-      breadcrumbSchema([
-        { name: "Home", url: `${baseUrl()}/${locale}` },
-        { name: "Applications", url: `${baseUrl()}/${locale}#applications-deep` },
-        { name: title, url },
-      ]),
+      breadcrumbSchema(
+        crumbs.map((c) => ({ name: c.name, url: `${baseUrl()}${c.url}` }))
+      ),
     ];
   } catch (error) {
     console.error(`[applications/${slug}] JSON-LD build failed:`, error);
@@ -184,7 +188,7 @@ export default async function ApplicationPage({ params }: { params: Promise<{ sl
   return (
     <>
       {jsonLd.length > 0 && <JsonLd data={jsonLd} />}
-      <ApplicationClient data={data} realCases={realCases} images={images} />
+      <ApplicationClient data={data} realCases={realCases} images={images} breadcrumbs={crumbs} />
     </>
   );
 }