fix: Return ErrUserQuit for clean termination in download handling functions

Author: alvarorichard

internal/player/download.go

@@ -700,7 +700,8 @@ func HandleBatchDownloadRange(episodes []models.Episode, animeURL string, startN
 	if util.IsDebug {
 		util.Logger.Debug("HandleBatchDownloadRange completed", "animeURL", animeURL, "duration", time.Since(start))
 	}
-	return nil
+	// For programmatic range downloads, exit without further prompts
+	return ErrUserQuit
 }
 
 // getEpisodeRange asks the user for the episode range for download.
@@ -826,7 +827,7 @@ func handleExistingEpisodes(episodes []models.Episode, animeURL string, startNum
 
 	if selectedEpisode == "exit" {
 		fmt.Println("No episode selected.")
-		return nil
+		return ErrUserQuit
 	}
 
 	// Find and play the selected episode
@@ -908,7 +909,7 @@ func askAndPlayDownloadedEpisode(episodes []models.Episode, animeURL string, sta
 
 	if selectedEpisode == "exit" {
 		fmt.Println("No episode selected.")
-		return nil
+		return ErrUserQuit
 	}
 
 	// Find and play the selected episode

internal/player/player.go

@@ -261,7 +261,7 @@ func HandleDownloadAndPlay(
 	case 2:
 		// Download episodes in a range
 		if err := HandleBatchDownload(episodes, animeURL); err != nil {
-			util.Fatal("Failed to download episodes:", err)
+			return err
 		}
 	default:
 		// Play online - determine the best approach based on URL type
@@ -472,8 +472,10 @@ func downloadAndPlayEpisode(
 		if err := playVideo(episodePath, episodes, selectedEpisodeNum, animeMalID, updater); err != nil {
 			return err
 		}
+		return nil
 	}
-	return nil
+	// User chose not to watch; terminate flow cleanly
+	return ErrUserQuit
 }
 
 // askForDownload presents a prompt for the user to choose a download option.