STYLE: refresh gallery preview on members page with latest 2026 photos

Author: hyeondo-jang

group.html

@@ -445,33 +445,33 @@ <h3>Gallery</h3>
         <p>We also spend time together on various occasions. For more stories, check out <a href="gallery.html">here</a>!</p>
         <div class="gallery-preview">
             <div class="gallery-preview-item">
-                <a href="stories/26_bowling.png" target="_blank">
-                    <img src="stories/26_bowling.png" alt="Bowling Night">
-                    <span class="tooltip">Bowling Night</span>
+                <a href="stories/26_iclrdinner.jpeg" target="_blank">
+                    <img src="stories/thumbs/26_iclrdinner.jpg" alt="ICLR Dinner" loading="lazy">
+                    <span class="tooltip">ICLR Dinner</span>
                 </a>
             </div>
             <div class="gallery-preview-item">
-                <a href="stories/26_post-icml.jpeg" target="_blank">
-                    <img src="stories/26_post-icml.jpeg" alt="post-ICML 2026">
-                    <span class="tooltip">post-ICML 2026</span>
+                <a href="stories/26_iclr.jpg" target="_blank">
+                    <img src="stories/thumbs/26_iclr.jpg" alt="ICLR 2026" loading="lazy">
+                    <span class="tooltip">ICLR 2026</span>
                 </a>
             </div>
             <div class="gallery-preview-item">
-                <a href="stories/25_yearendparty.png" target="_blank">
-                    <img src="stories/25_yearendparty.png" alt="Year-end Party">
-                    <span class="tooltip">Year-end Party</span>
+                <a href="stories/26_logdinner.jpg" target="_blank">
+                    <img src="stories/thumbs/26_logdinner.jpg" alt="LOG Dinner" loading="lazy">
+                    <span class="tooltip">LOG Dinner</span>
                 </a>
             </div>
             <div class="gallery-preview-item">
-                <a href="stories/25_boardgame.jpeg" target="_blank">
-                    <img src="stories/25_boardgame.jpeg" alt="Board Game Night">
-                    <span class="tooltip">Board Game Night</span>
+                <a href="stories/26_bowling.png" target="_blank">
+                    <img src="stories/thumbs/26_bowling.jpg" alt="Bowling Night" loading="lazy">
+                    <span class="tooltip">Bowling Night</span>
                 </a>
             </div>
             <div class="gallery-preview-item">
-                <a href="stories/25_openday.jpg" target="_blank">
-                    <img src="stories/25_openday.jpg" alt="LOG Open Day">
-                    <span class="tooltip">LOG Open Day</span>
+                <a href="stories/26_post-icml.jpeg" target="_blank">
+                    <img src="stories/thumbs/26_post-icml.jpg" alt="post-ICML 2026" loading="lazy">
+                    <span class="tooltip">post-ICML 2026</span>
                 </a>
             </div>
         </div>