Update proof-of-means to 507,43 EUR, add announcement page, European number format (EN)

- Update the residence-permit "sufficient means" figure to 507,43 EUR/month
  (Slovenian basic minimum income from 1 April 2026, source gov.si) across the
  guide, FAQ, budget note, sample parent statement and my-route tip; replaces
  the old 484,88 everywhere.
- New standalone news announcement page /<lang>/news/proof-of-means-updated-2026/
  (trilingual), published 1 August 2026, with a clickable gov.si source box and a
  hero image (Pixabay, credited). news.js now supports announcement items
  (slug + body) and shows them newest-first on the homepage and News hub; the
  image doubles as the card thumbnail. Optimised 6.98MB to 255KB.
- Switch English EUR amounts to European format (comma decimal, dot thousands):
  507,43 / 9.600 / 1.000 etc. Only euro-prefixed amounts are touched, so SI/MK
  (which use a euro suffix) are unaffected. New generator eurofmt.js.

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

si/index.html

@@ -261,12 +261,22 @@
             </div>
         </section>
 
-                        <section class="latest-news-section">
+                                                <section class="latest-news-section">
             <div class="news-header">
                 <h2>Najnovejše novice</h2>
                 <p>Kaj je novega pri MSOS, od dogodkov in projektov do blog zgodb in obvestil.</p>
             </div>
             <div class="news-articles">
+                <article class="news-card" data-type="news">
+                    <a class="news-card-media" href="../si/news/proof-of-means-updated-2026/">
+                        <img src="../images/news-proof-of-means.jpg" alt="Znesek dokazila o sredstvih posodobljen na 507,43 € na mesec" loading="lazy">
+                        <span class="news-badge news-badge--news"><i class="fas fa-bullhorn" aria-hidden="true"></i> Novica</span>
+                    </a>
+                    <div class="card-content">
+                        <p class="author">1 avgust 2026</p>
+                        <h3><a href="../si/news/proof-of-means-updated-2026/">Znesek dokazila o sredstvih posodobljen na 507,43 € na mesec</a></h3>
+                    </div>
+                </article>
                 <article class="news-card" data-type="news">
                     <a class="news-card-media" href="../si/news/">
                         <div class="news-ph"><i class="fas fa-bullhorn" aria-hidden="true"></i></div>
@@ -287,16 +297,6 @@
                         <h3><a href="../si/news/">Pridruži se tednu dobrodošlice za nove študente</a></h3>
                     </div>
                 </article>
-                <article class="news-card" data-type="news">
-                    <a class="news-card-media" href="../si/news/">
-                        <div class="news-ph"><i class="fas fa-bullhorn" aria-hidden="true"></i></div>
-                        <span class="news-badge news-badge--news"><i class="fas fa-bullhorn" aria-hidden="true"></i> Novica</span>
-                    </a>
-                    <div class="card-content">
-                        <p class="author">20 junij 2026</p>
-                        <h3><a href="../si/news/">Poletne uradne ure in kako nas dosežete</a></h3>
-                    </div>
-                </article>
             </div>
             <a href="../si/news/" class="btn btn-secondary">Poglej vse</a>
         </section>