health: fix broken pages, add image dimensions, a11y & SEO wins

Site-wide health pass (excludes in-progress blog work). Verified with a
local server + headless browser: Timeline, homepage and gallery pages load
with zero console errors and no layout distortion.

Render bugs
- Timeline page (en/mk/si): fix ../../../ paths that overshot the site root,
  so the main stylesheet and hero image load again.
- Meet Student Slovenia 2023 (en/mk/si): remove a <figure> referencing
  event3-photo-11.png, an image that was never uploaded (broken image).

Performance
- Add intrinsic width/height to 1039 raster <img> tags to prevent layout
  shift (CLS); 450 SVGs correctly skipped. Add a global
  `img { max-width:100%; height:auto }` safety net so aspect ratio is
  preserved and images never overflow.
- Preload the homepage hero (LCP) image on en/mk/si.
- Load Font Awesome non-blocking (media=print/onload swap) with a <noscript>
  fallback, on 225 pages.

Accessibility
- Add aria-label to 57 unlabeled newsletter email inputs.
- Add an sr-only <h1> to the three "My Route" pages (had no h1).
- Add an .sr-only utility class.

SEO
- Add meta descriptions to legal/msos-hub/support pages (en/mk/si).

Note: MK/SI meta descriptions are machine-drafted and should be proofread
by a native speaker before considering them final.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

en/get-to-know-macedonia/welcome-to-macedonia/index.html

@@ -56,7 +56,7 @@
     <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap" rel="stylesheet">
     
     <!-- Font Awesome (for icons) -->
-    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css" integrity="sha512-DTOQO9RWCH3ppGqcWaEA1BIZOC6xxalwEsw9c2QQeAIftl+Vegovlnee1c9QX4TctnWMn13TZye+giMm8e2LwA==" crossorigin="anonymous" referrerpolicy="no-referrer" />
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css" integrity="sha512-DTOQO9RWCH3ppGqcWaEA1BIZOC6xxalwEsw9c2QQeAIftl+Vegovlnee1c9QX4TctnWMn13TZye+giMm8e2LwA==" crossorigin="anonymous" referrerpolicy="no-referrer" media="print" onload="this.media=&#39;all&#39;" /><noscript><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css" integrity="sha512-DTOQO9RWCH3ppGqcWaEA1BIZOC6xxalwEsw9c2QQeAIftl+Vegovlnee1c9QX4TctnWMn13TZye+giMm8e2LwA==" crossorigin="anonymous" referrerpolicy="no-referrer" /></noscript>
 
     <!-- Correct path to the main CSS file -->
     <link rel="stylesheet" href="../../../css/main.css">
@@ -200,7 +200,7 @@
             </header>
 
                 <figure class="article-main-image">
-                    <img fetchpriority="high" src="../../../images/macedonia-welcome-skopje-square-hero.webp" alt="Macedonia Square in central Skopje">
+                    <img width="810" height="540" fetchpriority="high" src="../../../images/macedonia-welcome-skopje-square-hero.webp" alt="Macedonia Square in central Skopje">
                     <figcaption>Macedonia Square, Skopje. Photo: <a href="https://macedonia-timeless.com/eng/cities_and_regions/cities/skopje/" target="_blank" rel="noopener">macedonia-timeless.com</a></figcaption>
                 </figure>
 
@@ -238,7 +238,7 @@
                 <p>That is why our memories of home are so often connected to people rather than only to places.</p>
 
                 <figure class="article-inline-image">
-                    <img loading="lazy" decoding="async" src="../../../images/macedonia-welcome-hospitality.webp" alt="A traditional Macedonian table filled with local dishes">
+                    <img width="960" height="640" loading="lazy" decoding="async" src="../../../images/macedonia-welcome-hospitality.webp" alt="A traditional Macedonian table filled with local dishes">
                     <figcaption>Traditional Macedonian table. Photo: Youth Empowered, <a href="https://commons.wikimedia.org/wiki/File:%D0%A2%D1%80%D0%B0%D0%B4%D0%B8%D1%86%D0%B8%D0%BE%D0%BD%D0%B0%D0%BB%D0%BD%D0%B0_%D0%BC%D0%B0%D0%BA%D0%B5%D0%B4%D0%BE%D0%BD%D1%81%D0%BA%D0%B0_%D1%82%D1%80%D0%BF%D0%B5%D0%B7%D0%B0_8.jpg" target="_blank" rel="noopener">Wikimedia Commons</a>, <a href="https://creativecommons.org/licenses/by-sa/4.0/" target="_blank" rel="noopener">CC BY-SA 4.0</a> (cropped)</figcaption>
                 </figure>
 
@@ -267,7 +267,7 @@
                 <p>The most meaningful way to encounter it is often slowly, by walking, listening, and allowing a place to tell more than one story.</p>
 
                 <figure class="article-inline-image">
-                    <img loading="lazy" decoding="async" src="../../../images/macedonia-welcome-heritage.webp" alt="The Robevci Family House in the old town of Ohrid">
+                    <img width="1400" height="933" loading="lazy" decoding="async" src="../../../images/macedonia-welcome-heritage.webp" alt="The Robevci Family House in the old town of Ohrid">
                     <figcaption>Robevci Family House, Ohrid. Photo: Silfiriel, <a href="https://commons.wikimedia.org/wiki/File:%D0%9A%D1%83%D1%9C%D0%B0%D1%82%D0%B0_%D0%BD%D0%B0_%D0%A0%D0%BE%D0%B1%D0%B5%D0%B2%D1%86%D0%B8_-_%D0%9C%D1%83%D0%B7%D0%B5%D1%98_%D0%BD%D0%B0_%D0%B3%D1%80%D0%B0%D0%B4_%D0%9E%D1%85%D1%80%D0%B8%D0%B4_01.jpg" target="_blank" rel="noopener">Wikimedia Commons</a>, <a href="https://creativecommons.org/licenses/by-sa/3.0/" target="_blank" rel="noopener">CC BY-SA 3.0</a> (cropped)</figcaption>
                 </figure>