fix miruro seasons

providers/miruro.js

@@ -816,6 +816,19 @@ async function resolveSeasonEpisode(seed, mapping, identifier, season, episode)
   if (fromTags) {
     return { anime: seed, episode: fromTags };
   }
+  const continuation = related.filter((anime) => !isMovieFormat(anime) && seasonOf(anime) != null && seasonOf(anime) >= requestedSeason && entryBelongsToRequest(anime, mapping, identifier)).sort((first, second) => seasonOf(first) - seasonOf(second) || clusterPosition(first) - clusterPosition(second));
+  let offset = 0;
+  for (const anime of continuation) {
+    const episodes = anime.id === seed.id ? seedEpisodes : await listEpisodes(anime.id);
+    if (episodes.length === 0) {
+      continue;
+    }
+    const index = requestedEpisode - 1 - offset;
+    if (index >= 0 && index < episodes.length) {
+      return { anime, episode: episodes[index] };
+    }
+    offset += episodes.length;
+  }
   const local = seedEpisodes.find((item) => Number(item.episode_number) === requestedEpisode);
   return local ? { anime: seed, episode: local } : null;
 }

src/miruro/extractor.js

@@ -446,6 +446,39 @@ async function resolveSeasonEpisode(seed, mapping, identifier, season, episode)
         return { anime: seed, episode: fromTags };
     }
 
+    // TMDB sometimes keeps one season while the catalog splits the same run
+    // into several seasons (The Ramparts of Ice: TMDB S1 episode 15 is catalog
+    // season 2 episode 1). Walk catalog seasons at or after the requested one
+    // in order, carrying an episode offset, so those episodes stay reachable.
+    const continuation = related
+        .filter((anime) => (
+            !isMovieFormat(anime) &&
+            seasonOf(anime) != null &&
+            seasonOf(anime) >= requestedSeason &&
+            entryBelongsToRequest(anime, mapping, identifier)
+        ))
+        .sort((first, second) => (
+            seasonOf(first) - seasonOf(second) ||
+            clusterPosition(first) - clusterPosition(second)
+        ));
+    let offset = 0;
+
+    for (const anime of continuation) {
+        const episodes = anime.id === seed.id ? seedEpisodes : await listEpisodes(anime.id);
+
+        if (episodes.length === 0) {
+            continue;
+        }
+
+        const index = requestedEpisode - 1 - offset;
+
+        if (index >= 0 && index < episodes.length) {
+            return { anime, episode: episodes[index] };
+        }
+
+        offset += episodes.length;
+    }
+
     const local = seedEpisodes.find((item) => Number(item.episode_number) === requestedEpisode);
 
     return local ? { anime: seed, episode: local } : null;