refactor: Replace hardcoded domain with SITE_URL constant across metadata and schema definitions for improved configurability.

app/[locale]/page.tsx

@@ -20,25 +20,45 @@ export default function HomePage({ params: { locale } }: { params: { locale: str
     <div className="flex flex-col min-h-screen">
       <JsonLd
         id="breadcrumb-home"
-        data={getBreadcrumbSchema([
-          { name: 'Home', item: `/${locale}` },
-        ])}
+        data={getBreadcrumbSchema([{ name: 'Home', item: `/${locale}` }])}
       />
       <Hero />
-      <Reveal><ProductCategories /></Reveal>
-      <Reveal><WhatWeDo /></Reveal>
-      <Reveal><RecentPosts locale={locale} /></Reveal>
-      <Reveal><Experience /></Reveal>
-      <Reveal><WhyChooseUs /></Reveal>
-      <Reveal><MeetTheTeam /></Reveal>
-      <Reveal><GallerySection /></Reveal>
-      <Reveal><VideoSection /></Reveal>
-      <Reveal><CTA /></Reveal>
+      <Reveal>
+        <ProductCategories />
+      </Reveal>
+      <Reveal>
+        <WhatWeDo />
+      </Reveal>
+      <Reveal>
+        <RecentPosts locale={locale} />
+      </Reveal>
+      <Reveal>
+        <Experience />
+      </Reveal>
+      <Reveal>
+        <WhyChooseUs />
+      </Reveal>
+      <Reveal>
+        <MeetTheTeam />
+      </Reveal>
+      <Reveal>
+        <GallerySection />
+      </Reveal>
+      <Reveal>
+        <VideoSection />
+      </Reveal>
+      <Reveal>
+        <CTA />
+      </Reveal>
     </div>
   );
 }
 
-export async function generateMetadata({ params: { locale } }: { params: { locale: string } }): Promise<Metadata> {
+export async function generateMetadata({
+  params: { locale },
+}: {
+  params: { locale: string };
+}): Promise<Metadata> {
   // Use translations for meta where available (namespace: Index.meta)
   // Fallback to a sensible default if translation keys are missing.
   let t;
@@ -62,15 +82,15 @@ export async function generateMetadata({ params: { locale } }: { params: { local
     alternates: {
       canonical: `/${locale}`,
       languages: {
-        'de': '/de',
-        'en': '/en',
+        de: '/de',
+        en: '/en',
         'x-default': '/en',
       },
     },
     openGraph: {
       title: `${title} | KLZ Cables`,
       description,
-      url: `https://klz-cables.com/${locale}`,
+      url: `${SITE_URL}/${locale}`,
       images: getOGImageMetadata('', title, locale),
     },
     twitter: {