FEATURE: allows the backend to take a tracklis text file

web/backend/services/splitter.py

@@ -40,8 +40,10 @@ def run_split_task(task_id: str, tracklist: List[TracklistEntry], options: Dict[
 
         from types import SimpleNamespace
 
+        # Build args namespace from options.
+        # IMPORTANT: format is None if not specified -> core will auto-detect.
         args = SimpleNamespace(
-            format=options.get("format", "mp3"),
+            format=options.get("format"),
             transcode_to=options.get("transcode_to", None),
             drop_video=options.get("drop_video", False),
             drop_subs=options.get("drop_subs", False),
@@ -70,13 +72,10 @@ def run_split_task(task_id: str, tracklist: List[TracklistEntry], options: Dict[
             task_id, progress=10, message="Starting split..."
         )
 
-        # Run the split
         split_audio(str(input_path), str(output_dir), tracks, args)
 
-        # Get output files
         output_files = FileManager.get_output_files(task_id)
 
-        # Final status update
         task_manager.update_task_with_progress(
             task_id,
             progress=100,
@@ -84,7 +83,7 @@ def run_split_task(task_id: str, tracklist: List[TracklistEntry], options: Dict[
             status=TaskStatus.DONE
         )
 
-        # Add tracks to the task state
+        # Add tracks to the task state (for download and status queries)
         task_manager.update_task(
             task_id,
             tracks=output_files