fix: wire admin photo feedback filters into grid query (#293)

The Has Likes / Has Favorites / Has Comments checkboxes in the admin
Event > Photos tab updated local state but never affected the visible
photo grid, because the feedbackFilters state was only wired to the
export menu and the backend /admin/photos/:eventId/photos endpoint had
no support for these params.

Fixes:
- backend/src/routes/adminPhotos.js: extend GET /:eventId/photos to
  accept has_likes, has_favorites, has_comments, min_rating, and logic
  (AND/OR) query params and apply them via where-clause groups using
  the existing denormalized like_count/favorite_count/comment_count/
  average_rating columns.
- frontend/src/services/photos.service.ts: add hasLikes, hasFavorites,
  hasComments, minRating, logic to the PhotoFilters interface and
  append them as query params in getEventPhotos.
- frontend/src/pages/admin/EventDetailsPage.tsx: merge feedbackFilters
  into combinedPhotoFilters (via useMemo) and key the admin-event-photos
  query on it, so toggling any checkbox refetches with the new params.

Verified end-to-end against local Docker: seeded event with a known
feedback distribution and confirmed
- Has Likes → 4 photos
- Has Favorites → 3 photos
- Likes AND Favorites → 1 photo
- Likes OR Favorites → 6 photos
- Has Comments → 2 photos
- network requests carry the exact query params

frontend/src/pages/admin/EventDetailsPage.tsx

@@ -294,10 +294,21 @@ export const EventDetailsPage: React.FC = () => {
 
   // Statistics are now fetched with the event details from the admin API
 
+  // Merge feedback filters into photo query params so the grid reflects
+  // the Has Likes / Has Favorites / Has Comments / min rating checkboxes.
+  const combinedPhotoFilters: PhotoFilterParams = useMemo(() => ({
+    ...photoFilters,
+    hasLikes: feedbackFilters.hasLikes || undefined,
+    hasFavorites: feedbackFilters.hasFavorites || undefined,
+    hasComments: feedbackFilters.hasComments || undefined,
+    minRating: feedbackFilters.minRating ?? undefined,
+    logic: feedbackFilters.logic,
+  }), [photoFilters, feedbackFilters]);
+
   // Fetch photos (needed for both photos tab and hero photo selector)
   const { data: photos = [], isLoading: photosLoading, refetch: refetchPhotos } = useQuery({
-    queryKey: ['admin-event-photos', id, photoFilters],
-    queryFn: () => photosService.getEventPhotos(parseInt(id!), photoFilters),
+    queryKey: ['admin-event-photos', id, combinedPhotoFilters],
+    queryFn: () => photosService.getEventPhotos(parseInt(id!), combinedPhotoFilters),
     enabled: !!id && (activeTab === 'photos' || isEditing),
   });