Project pages: add ToC sidebar to all remaining articles (EN/MK/SI)

Give the 23 project pages that used a single-column layout the same scrollspy
table-of-contents sidebar as the others (built from their <h2> sections, with
language-agnostic section-N ids so it works for Cyrillic too), plus the mobile
ToC header. The "Like what we do?" sidebar CTA now sits under the ToC on every
non-memorial project page; the two memorial stories get the ToC but no CTA.
The full-width bottom CTA remains the mobile fallback.

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

si/projects/in-memory-of-frosina-kulakova/index.html

@@ -193,7 +193,28 @@
 <!-- END_HEADER -->
 
     <main class="article-page">
-        <article class="article-container">
+        <!-- Sticky Mobile Header -->
+        <div class="mobile-article-header">
+            <span id="mobile-article-title">V spomin na Frosino Kulakovo</span>
+            <i class="fas fa-chevron-down"></i>
+            <div class="progress-bar-container">
+                <div class="progress-bar"></div>
+            </div>
+            <div class="mobile-scrollspy-dropdown">
+                <ul id="mobile-scrollspy-links"></ul>
+            </div>
+        </div>
+
+                <div class="article-layout-container">
+            <aside class="article-sidebar">
+                <nav class="scrollspy-nav">
+                    <ul>
+                        <li><a href="#section-1" class="active">Sporočilo enotnosti</a></li>
+                        <li><a href="#section-2">Sklepne misli</a></li>
+                    </ul>
+                </nav>
+            </aside>
+            <article class="article-container">
             <header class="article-header">
                 <p class="article-publish-date">Objavljeno 8. februarja 2025</p>
                 <h1>V spomin na Frosino Kulakovo</h1>
@@ -211,7 +232,7 @@
                     <img width="720" height="480" loading="lazy" decoding="async" src="../../../images/frosina-2.webp" alt="Študenti prižigajo sveče v spomin na Frosino">
                 </figure>
 
-                <h2>Sporočilo enotnosti</h2>
+                <h2 id="section-1">Sporočilo enotnosti</h2>
 
                 <p>To srečanje ni bilo namenjeno politiki ali kritiki. Šlo je za sočutje, človečnost in skupno odgovornost. Kot študenti v tujini smo želeli pokazati, da nam ni vseeno, da se spominjamo in da upamo na boljši jutri, ko se takšne krivice ne bodo več dogajale.</p>
 
@@ -221,7 +242,7 @@
                     <img width="720" height="480" loading="lazy" decoding="async" src="../../../images/frosina-3.webp" alt="Cvetje in sveče, položene v spomin">
                 </figure>
 
-                <h2>Sklepne misli</h2>
+                <h2 id="section-2">Sklepne misli</h2>
 
                 <p>Frosinina zgodba nas je opomnila na krhkost življenja in pomen solidarnosti. Hvaležni smo vsem, ki so prišli, ki so prižgali svečo ali ki so preprosto stali z nami v tišini.</p>
 
@@ -239,6 +260,7 @@
                     </div>
                 </section>
         </article>
+        </div>
         <section class="newsletter-cta">
             <div class="container">
                 <div class="cta-content">