chore: optimize reference gallery, add typography plugin, fix SEO and map animations

app/[locale]/layout.tsx

@@ -91,6 +91,10 @@ export default async function Layout(props: {
       label: safeLocale === 'de' ? 'Über uns' : 'About Us', 
       url: `/${safeLocale}/${await mapFileSlugToTranslated('ueber-uns', safeLocale)}` 
     },
+    {
+      label: safeLocale === 'de' ? 'Referenzen' : 'References',
+      url: `/${safeLocale}/referenzen`
+    },
     { 
       label: safeLocale === 'de' ? 'Karriere' : 'Careers', 
       url: `/${safeLocale}/${await mapFileSlugToTranslated('karriere', safeLocale)}` 
@@ -103,7 +107,7 @@ export default async function Layout(props: {
  
   const companyInfo = {
     contactEmail: 'info@e-tib.com',
-    contactPhone: '+49 15207230518',
+    contactPhone: '+49 (0) 3561 / 68577 33',
     address: 'Gewerbestraße 22\n03172 Guben'
   };