refactor: extract watchlist map to service, optimize command palette queries

internal/watchlist/service/service.go

@@ -55,6 +55,32 @@ func (s *watchlistService) GetWatchlist(ctx context.Context, userID string) ([]d
 	return s.repo.GetUserWatchList(ctx, userID)
 }
 
+func (s *watchlistService) GetWatchlistMap(ctx context.Context, userID string, animeIDs []int64) (map[int]bool, error) {
+	watchlistMap := make(map[int]bool)
+	if userID == "" || len(animeIDs) == 0 {
+		return watchlistMap, nil
+	}
+
+	matches, err := s.repo.GetUserWatchlistAnimeIDs(ctx, userID, animeIDs)
+	if err != nil {
+		return watchlistMap, err
+	}
+
+	for _, animeID := range matches {
+		watchlistMap[int(animeID)] = true
+	}
+
+	return watchlistMap, nil
+}
+
+func (s *watchlistService) GetCommandPaletteWatchlist(ctx context.Context, userID string, query string, limit int64) ([]domain.UserWatchListRow, error) {
+	return s.repo.GetCommandPaletteWatchlist(ctx, userID, query, limit)
+}
+
+func (s *watchlistService) GetCommandPaletteContinueWatching(ctx context.Context, userID string, query string, limit int64) ([]db.GetContinueWatchingEntriesRow, error) {
+	return s.repo.GetCommandPaletteContinueWatching(ctx, userID, query, limit)
+}
+
 func (s *watchlistService) GetWatchListEntry(ctx context.Context, userID string, animeID int64) (db.WatchListEntry, error) {
 	return s.repo.GetWatchListEntry(ctx, db.GetWatchListEntryParams{
 		UserID:  userID,