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/posts/+page.server.ts

@@ -1,11 +1,17 @@
 import type { PageServerLoad } from './$types';
 import { loadPostsList } from '$lib/blog-utils';
+import { warmPostCardImages } from '$lib/rusty-image.server';
 import { t, T } from '$lib/translations';
 
-export const load: PageServerLoad = async ({ locals }) => {
+export const load: PageServerLoad = async ({ locals, fetch }) => {
   const translations = locals.translations ?? {};
   const result = await loadPostsList({ page: 1 });
 
+  warmPostCardImages(
+    result.posts as Array<{ _rawImageUrl?: string; _imageFocal?: { x: number; y: number } | null }>,
+    fetch,
+  );
+
   return {
     ...result,
     translations,