fix: prevent last gallery row from overflowing container

photologue/static/gallery_justified.js

@@ -43,10 +43,10 @@
             const sumRatios = ratios.slice(start, end).reduce((a, b) => a + b, 0);
             const totalSpacing = SPACING * (count - 1);
 
-            // Don't stretch the last row if it's not full
-            const rowHeight = isLastRow && count < 3
-                ? TARGET_HEIGHT
-                : (containerWidth - totalSpacing) / sumRatios;
+            // Fill the container width, except for a last row that isn't full:
+            // it keeps the target height, but never wider than the container.
+            const fitHeight = (containerWidth - totalSpacing) / sumRatios;
+            const rowHeight = isLastRow ? Math.min(TARGET_HEIGHT, fitHeight) : fitHeight;
 
             let left = PADDING;
             for (let i = start; i < end; i++) {