feat: add feedback management enhancements

- Add German translations for event dropdown menu actions
- Add feedback settings to event edit form
- Hide comment button in gallery when feedback is disabled
- Add feedback moderation panel to event details page

Implements:
1. German translation for three dots menu actions (viewDetails, archiveEventAction, etc.)
2. Feedback enable option now visible when editing existing events
3. Comment button in photo lightbox only shows when feedback is enabled
4. Inline comment moderation in admin event detail view

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/src/components/gallery/GalleryView.tsx

@@ -18,6 +18,7 @@ import { GALLERY_THEME_PRESETS } from '../../types/theme.types';
 import { api } from '../../config/api';
 import { Upload, Menu } from 'lucide-react';
 import { galleryService } from '../../services/gallery.service';
+import { feedbackService } from '../../services/feedback.service';
 import { useWatermarkSettings } from '../../hooks/useWatermarkSettings';
 
 interface GalleryViewProps {
@@ -48,6 +49,7 @@ export const GalleryView: React.FC<GalleryViewProps> = ({ slug, event }) => {
   const [sidebarOpen, setSidebarOpen] = useState(false);
   const [isSelectionMode, setIsSelectionMode] = useState(false);
   const [selectedPhotos, setSelectedPhotos] = useState<Set<number>>(new Set());
+  const [feedbackEnabled, setFeedbackEnabled] = useState(false);
   const [isMobile, setIsMobile] = useState(window.innerWidth < 768);
   const { watermarkEnabled } = useWatermarkSettings();
   
@@ -76,6 +78,25 @@ export const GalleryView: React.FC<GalleryViewProps> = ({ slug, event }) => {
     staleTime: 5 * 60 * 1000, // Cache for 5 minutes
   });
 
+  // Fetch feedback settings
+  const { data: feedbackSettings } = useQuery({
+    queryKey: ['gallery-feedback-settings', event.id],
+    queryFn: async () => {
+      try {
+        // Use public endpoint to get feedback settings
+        const response = await api.get(`/gallery/${slug}/feedback-settings`);
+        return response.data;
+      } catch (error) {
+        // If endpoint doesn't exist or returns error, default to disabled
+        return { feedback_enabled: false };
+      }
+    },
+    onSuccess: (data) => {
+      setFeedbackEnabled(data?.feedback_enabled || false);
+    },
+    enabled: !!event.id,
+  });
+
   // Apply branding settings
   useEffect(() => {
     if (settingsData) {
@@ -429,6 +450,7 @@ export const GalleryView: React.FC<GalleryViewProps> = ({ slug, event }) => {
             photos={filteredPhotos} 
             slug={slug} 
             categoryId={selectedCategoryId}
+            feedbackEnabled={feedbackEnabled}
             isSelectionMode={isSelectionMode}
             selectedPhotos={selectedPhotos}
             onSelectionChange={setSelectedPhotos}

frontend/src/components/gallery/PhotoGrid.tsx

@@ -15,9 +15,10 @@ interface PhotoGridProps {
   photos: Photo[];
   slug: string;
   categoryId?: number | null;
+  feedbackEnabled?: boolean;
 }
 
-export const PhotoGrid: React.FC<PhotoGridProps> = ({ photos, slug, categoryId }) => {
+export const PhotoGrid: React.FC<PhotoGridProps> = ({ photos, slug, categoryId, feedbackEnabled = false }) => {
   const { t } = useTranslation();
   const [selectedPhotoIndex, setSelectedPhotoIndex] = useState<number | null>(null);
   const [selectedPhotos, setSelectedPhotos] = useState<Set<number>>(new Set());
@@ -204,6 +205,7 @@ export const PhotoGrid: React.FC<PhotoGridProps> = ({ photos, slug, categoryId }
           initialIndex={selectedPhotoIndex}
           onClose={() => setSelectedPhotoIndex(null)}
           slug={slug}
+          feedbackEnabled={feedbackEnabled}
         />
       )}
     </>

frontend/src/components/gallery/PhotoGridWithLayouts.tsx

@@ -34,6 +34,7 @@ interface PhotoGridWithLayoutsProps {
   eventLogo?: string | null;
   eventDate?: string;
   expiresAt?: string;
+  feedbackEnabled?: boolean;
 }
 
 export const PhotoGridWithLayouts: React.FC<PhotoGridWithLayoutsProps> = ({ 
@@ -42,6 +43,7 @@ export const PhotoGridWithLayouts: React.FC<PhotoGridWithLayoutsProps> = ({
   categoryId,
   isSelectionMode: parentSelectionMode,
   selectedPhotos: parentSelectedPhotos,
+  feedbackEnabled,
   onSelectionChange,
   onToggleSelectionMode: parentToggleSelectionMode,
   showSelectionControls = true,
@@ -259,6 +261,7 @@ export const PhotoGridWithLayouts: React.FC<PhotoGridWithLayoutsProps> = ({
           initialIndex={selectedPhotoIndex}
           onClose={() => setSelectedPhotoIndex(null)}
           slug={slug}
+          feedbackEnabled={feedbackEnabled || false}
         />
       )}
     </>

frontend/src/components/gallery/PhotoLightbox.tsx

@@ -10,6 +10,7 @@ interface PhotoLightboxProps {
   initialIndex: number;
   onClose: () => void;
   slug: string;
+  feedbackEnabled?: boolean;
 }
 
 export const PhotoLightbox: React.FC<PhotoLightboxProps> = ({
@@ -17,6 +18,7 @@ export const PhotoLightbox: React.FC<PhotoLightboxProps> = ({
   initialIndex,
   onClose,
   slug,
+  feedbackEnabled = false,
 }) => {
   const [currentIndex, setCurrentIndex] = useState(initialIndex);
   const [zoom, setZoom] = useState(1);
@@ -227,13 +229,15 @@ export const PhotoLightbox: React.FC<PhotoLightboxProps> = ({
               <Download className="w-5 h-5 text-white" />
             </button>
             
-            <button
-              onClick={() => setShowFeedback(!showFeedback)}
-              className="p-2 bg-white/10 hover:bg-white/20 rounded-full transition-colors"
-              aria-label="Toggle feedback"
-            >
-              <MessageSquare className="w-5 h-5 text-white" />
-            </button>
+            {feedbackEnabled && (
+              <button
+                onClick={() => setShowFeedback(!showFeedback)}
+                className="p-2 bg-white/10 hover:bg-white/20 rounded-full transition-colors"
+                aria-label="Toggle feedback"
+              >
+                <MessageSquare className="w-5 h-5 text-white" />
+              </button>
+            )}
           </div>
         </div>
       </div>