Added function stubs for diarize, transcribe, and identify tasks to tasks.py.

tasks.py

@@ -1,8 +1,31 @@
 from celery import shared_task
-import os
 
 @shared_task
 def delete_temp_file(file_path):
     """Celery task to delete a temporary file."""
-    if os.path.exists(file_path):
-        os.remove(file_path)
+    # Implementation goes here.
+    pass
+
+@shared_task
+def diarize(audio_path):
+    """
+    Celery task that performs diarization on an audio file.
+    Placeholder for actual implementation.
+    """
+    pass
+
+@shared_task
+def transcribe(audio_path):
+    """
+    Celery task that transcribes speech from an audio file to text.
+    Placeholder for actual implementation.
+    """
+    pass
+
+@shared_task
+def identify(image_path):
+    """
+    Celery task that identifies objects or features in an image.
+    Placeholder for actual implementation.
+    """
+    pass