fix(og): enable automatic OG image discovery and refine Traefik whitelist

- Removed manual 'images' metadata overrides.
- This allows Next.js to use built-in automatic discovery.
- Ensures metadata uses the dynamic metadataBase from the environment.
- Refined Traefik public router regex for sub-routes.
- Restored and verified imports in modified page.tsx files.

app/[locale]/products/page.tsx

@@ -6,7 +6,6 @@ import { Metadata } from 'next';
 import Image from 'next/image';
 import Link from 'next/link';
 import { mapFileSlugToTranslated } from '@/lib/slugs';
-import { getOGImageMetadata } from '@/lib/metadata';
 import { SITE_URL } from '@/lib/schema';
 
 interface ProductsPageProps {
@@ -35,7 +34,6 @@ export async function generateMetadata({ params }: ProductsPageProps): Promise<M
       title: `${title} | KLZ Cables`,
       description,
       url: `${SITE_URL}/${locale}/products`,
-      images: getOGImageMetadata('products', title, locale),
     },
     twitter: {
       card: 'summary_large_image',