feat: update site URLs and enhance image handling

- Changed site URLs in docker-compose and deployment configurations to remove "www" prefix for consistency.
- Improved image handling by introducing warmPostCardImages function for pre-fetching images in posts and tags.
- Enhanced PostCard component with responsive image sizes for better performance.
- Updated layout to include robots meta tag and JSON-LD structured data for improved SEO.
- Added loading state for images in TopBanner component to enhance user experience.

src/routes/[...slug]/+page.server.ts

@@ -78,6 +78,7 @@ export const load: PageServerLoad = async ({ params, locals, fetch }) => {
     translations,
     seoTitle: page.seoTitle ?? page.headline ?? page.linkName ?? slug,
     seoDescription: page.seoDescription ?? page.subheadline ?? '',
+    robots: (page as { seoMetaRobots?: string }).seoMetaRobots ?? undefined,
     breadcrumbItems: [
       { href: '/', label: 'Start' },
       { label: page.headline ?? page.linkName ?? page.slug ?? page._slug ?? slug },