Add the remaining Get to Know stories with sourced images

Complete the two country sections with the place, food, culture, and
heritage stories, so every hub card now leads to a full article instead
of a pending page.

Articles (EN/SI/MK each):
- Slovenia: Lake Bled Beyond the Famous View, A First Taste of Slovenian
  Food, Slovenian Habits That May Surprise You, and Slovenia's Stories in
  Stone and Tradition.
- Macedonia: Ohrid, More Than a Postcard, plus the earlier Skopje and
  Ljubljana stories that were still untracked.
- Table, Music and Dance, and History articles for Macedonia are in place
  and still use image placeholders until their photos are sourced.

Images:
- Real, sourced photos wired into every finished article, each with an
  attribution caption (place, photographer where known, source link).
  Images are center-cropped to a uniform 3:2 and downscaled; webp and
  jfif sources converted to jpg.
- Each article's hero image is reused on its hub card.
- Welcome to Macedonia now opens with Macedonia Square in Skopje; the
  Church of St. John at Kaneo photo moves to the Ohrid story.

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

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

@@ -181,8 +181,8 @@
             </header>
 
                 <figure class="article-main-image">
-                    <img src="../../../images/macedonia-welcome-hero.jpg" alt="The Church of St. John at Kaneo above Lake Ohrid">
-                    <figcaption>Црквата Св. Јован Канео, Охрид. Фото: <a href="https://www.ciconiatravel.com/2019/11/08/15-fantastic-facts-about-macedonia/" target="_blank" rel="noopener">ciconiatravel.com</a></figcaption>
+                    <img src="../../../images/macedonia-welcome-skopje-square-hero.jpg" alt="Macedonia Square in central Skopje">
+                    <figcaption>Плоштад Македонија, Скопје. Фото: <a href="https://macedonia-timeless.com/eng/cities_and_regions/cities/skopje/" target="_blank" rel="noopener">macedonia-timeless.com</a></figcaption>
                 </figure>
 
             <div class="article-body">