Fix

server.ts

@@ -756,12 +756,12 @@ app.get("/api/rss-endpoints", async (c) => {
       },
       categories: episodeCategories.map((category) => ({
         title: `カテゴリ: ${category}`,
-        url: `${baseUrl}/podcast/category/${encodeURIComponent(category)}.xml`,
+        url: `${baseUrl}/podcast/category/${encodeURIComponent(category)}`,
         description: `「${category}」カテゴリのエピソードのみ`,
       })),
       feeds: activeFeeds.map((feed) => ({
         title: `フィード: ${feed.title || feed.url}`,
-        url: `${baseUrl}/podcast/feed/${feed.id}.xml`,
+        url: `${baseUrl}/podcast/feed/${feed.id}`,
         description: `「${feed.title || feed.url}」からのエピソードのみ`,
         feedCategory: feed.category,
       })),