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>

si/get-to-know-slovenia/index.html

@@ -54,7 +54,7 @@
     <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>
 
     <!-- Povezava na glavno CSS datoteko -->
     <link rel="stylesheet" href="../../css/main.css">
@@ -197,7 +197,7 @@
                 <h1>Spoznaj Slovenijo</h1>
                 <p class="page-description">Slovenija je na zemljevidu morda majhna, vendar se med Alpami, Jadransko obalo, zelenimi rekami, starimi mesti in mirnimi kotički skriva veliko. V teh zgodbah delimo kraje, okuse, tradicije in vsakdanje podrobnosti, skozi katere smo tudi sami spoznavali državo, ki ji danes pravimo tudi dom.</p>
                 <form class="subscribe-form">
-                    <input type="email" placeholder="Vnesite svoj e-mail">
+                    <input type="email" placeholder="Vnesite svoj e-mail" aria-label="E-poštni naslov">
                     <button type="submit" class="btn btn-primary-orange">Naroči se</button>
                 </form>
                 <p class="privacy-note">Skrbimo za vaše podatke v naši <a href="../../si/privacy-policy/">politiki zasebnosti</a>.</p>
@@ -222,7 +222,7 @@
                     <!-- Story: Dobrodošli v Sloveniji -->
                     <article class="post-card" data-category="identity">
                         <a href="welcome-to-slovenia/" class="post-link">
-                            <img loading="lazy" decoding="async" src="../../images/slovenia-welcome-hero.webp" alt="Lake Jasna near Kranjska Gora, with mountain peaks reflected in the water" class="post-image">
+                            <img width="1200" height="800" loading="lazy" decoding="async" src="../../images/slovenia-welcome-hero.webp" alt="Lake Jasna near Kranjska Gora, with mountain peaks reflected in the water" class="post-image">
                             <div class="post-content">
                                 <p class="post-meta">MSOS Ekipa • Ljudje in identiteta</p>
                                 <h3 class="post-title">Dobrodošli v Sloveniji</h3>
@@ -233,7 +233,7 @@
                     <!-- Story: Ljubljana skozi naše oči -->
                     <article class="post-card" data-category="places">
                         <a href="ljubljana-through-our-eyes/" class="post-link">
-                            <img loading="lazy" decoding="async" src="../../images/slovenia-ljubljana-river-life-hero.webp" alt="A crowd gathered along the Ljubljanica during an event in central Ljubljana" class="post-image">
+                            <img width="1400" height="933" loading="lazy" decoding="async" src="../../images/slovenia-ljubljana-river-life-hero.webp" alt="A crowd gathered along the Ljubljanica during an event in central Ljubljana" class="post-image">
                             <div class="post-content">
                                 <p class="post-meta">MSOS Ekipa • Kraji in narava</p>
                                 <h3 class="post-title">Ljubljana skozi naše oči</h3>
@@ -244,7 +244,7 @@
                     <!-- Story: Bled, več kot znameniti razgled -->
                     <article class="post-card" data-category="places">
                         <a href="lake-bled-beyond-the-famous-view/" class="post-link">
-                            <img loading="lazy" decoding="async" src="../../images/slovenia-bled-lakeside-walk-hero.webp" alt="A walking path beside Lake Bled with the island and mountains in view" class="post-image">
+                            <img width="1023" height="682" loading="lazy" decoding="async" src="../../images/slovenia-bled-lakeside-walk-hero.webp" alt="A walking path beside Lake Bled with the island and mountains in view" class="post-image">
                             <div class="post-content">
                                 <p class="post-meta">MSOS Ekipa • Kraji in narava</p>
                                 <h3 class="post-title">Bled, več kot znameniti razgled</h3>
@@ -255,7 +255,7 @@
                     <!-- Story: Prvi okus slovenske kuhinje -->
                     <article class="post-card" data-category="food">
                         <a href="a-first-taste-of-slovenian-food/" class="post-link">
-                            <img loading="lazy" decoding="async" src="../../images/slovenia-food-regional-table-hero.webp" alt="Several regional Slovenian dishes served together on a table" class="post-image">
+                            <img width="1400" height="933" loading="lazy" decoding="async" src="../../images/slovenia-food-regional-table-hero.webp" alt="Several regional Slovenian dishes served together on a table" class="post-image">
                             <div class="post-content">
                                 <p class="post-meta">MSOS Ekipa • Hrana in okusi</p>
                                 <h3 class="post-title">Prvi okus slovenske kuhinje</h3>
@@ -266,7 +266,7 @@
                     <!-- Story: Slovenske navade, ki vas lahko presenetijo -->
                     <article class="post-card" data-category="culture">
                         <a href="slovenian-habits-that-may-surprise-you/" class="post-link">
-                            <img loading="lazy" decoding="async" src="../../images/slovenia-habits-guest-slippers-hero.webp" alt="A pair of slippers by the entrance of a Slovenian home" class="post-image">
+                            <img width="1400" height="933" loading="lazy" decoding="async" src="../../images/slovenia-habits-guest-slippers-hero.webp" alt="A pair of slippers by the entrance of a Slovenian home" class="post-image">
                             <div class="post-content">
                                 <p class="post-meta">MSOS Ekipa • Kultura in tradicije</p>
                                 <h3 class="post-title">Slovenske navade, ki vas lahko presenetijo</h3>
@@ -277,7 +277,7 @@
                     <!-- Story: Zgodbe Slovenije v kamnu in tradiciji -->
                     <article class="post-card" data-category="heritage">
                         <a href="slovenias-stories-in-stone-and-tradition/" class="post-link">
-                            <img loading="lazy" decoding="async" src="../../images/slovenia-heritage-plecnik-daily-life-hero.webp" alt="A Plečnik-designed public space beside the Ljubljanica" class="post-image">
+                            <img width="1400" height="933" loading="lazy" decoding="async" src="../../images/slovenia-heritage-plecnik-daily-life-hero.webp" alt="A Plečnik-designed public space beside the Ljubljanica" class="post-image">
                             <div class="post-content">
                                 <p class="post-meta">MSOS Ekipa • Zgodovina in dediščina</p>
                                 <h3 class="post-title">Zgodbe Slovenije v kamnu in tradiciji</h3>