fix(gallery): feedback filter headline + horizontal icons in sidebar (compact variant); ensure sidebar content scrolls (flex-col container)

frontend/src/components/gallery/GalleryFilter.tsx

@@ -36,7 +36,11 @@ export const GalleryFilter: React.FC<GalleryFilterProps> = ({
   if (variant === 'compact') {
     return (
       <div className={`${className}`}>
-        <div className="flex flex-col items-start gap-1">
+        <div className="flex items-center gap-2">
+          <span className="text-sm text-neutral-700 whitespace-nowrap">
+            {t('gallery.feedbackFilter', 'Feedback Filter')}
+          </span>
+          <div className="flex items-center gap-1">
             <Button
               variant={currentFilter === 'all' ? 'primary' : 'outline'}
               size="sm"
@@ -66,6 +70,7 @@ export const GalleryFilter: React.FC<GalleryFilterProps> = ({
             </Button>
           </div>
         </div>
+      </div>
     );
   }
 

frontend/src/components/gallery/GallerySidebar.tsx

@@ -114,7 +114,7 @@ export const GallerySidebar: React.FC<GallerySidebarProps> = ({
       <div
         ref={sidebarRef}
         className={`
-          fixed top-0 left-0 h-full bg-white shadow-xl z-50 transition-transform duration-300 ease-in-out
+          fixed top-0 left-0 h-full bg-white shadow-xl z-50 transition-transform duration-300 ease-in-out flex flex-col
           ${isMobile ? 'w-full max-w-sm' : 'w-80'}
           ${isOpen ? 'translate-x-0' : '-translate-x-full'}
         `}