Fix Fullscreen bug

components/PublicGrid.tsx

@@ -342,11 +342,9 @@ export default function PublicGrid({ cards, maxCols = 5 }: { cards: Card[], maxC
               key={card.id}
               onClick={() => {
                 setActiveCard(card);
-                // If any extraMedia item is flagged auto-fullscreen, open it immediately.
-                // The carousel's index 0 is the cover image; extraMedia starts at offset 1 (or 0 if no cover).
-                const offset = card.imageUrl ? 1 : 0;
-                const idx = (card.extraMedia || []).findIndex(m => m.autoFullscreen);
-                if (idx >= 0) setFullscreenIndex(offset + idx);
+                // If any media item is flagged auto-fullscreen, open the viewer from the start.
+                const triggers = (card.extraMedia || []).some(m => m.autoFullscreen);
+                if (triggers) setFullscreenIndex(0);
               }}
               className="group relative cursor-pointer overflow-hidden rounded-xl shadow-md aspect-square bg-gray-200 transition-all duration-300 hover:shadow-xl hover:-translate-y-1"
             >