Fix

frontend/src/components/EpisodeList.tsx

@@ -28,6 +28,7 @@ interface EpisodeWithFeedInfo {
   feedTitle?: string;
   feedUrl: string;
   feedCategory?: string;
+  category?: string;
 }
 
 function EpisodeList() {
@@ -164,7 +165,7 @@ function EpisodeList() {
     }
   };
 
-  const filterFeedsByCategory = () => {
+  const filterEpisodesByCategory = () => {
     if (!selectedCategory) {
       setFilteredEpisodes(episodes);
     } else {