Merge branch 'pr-483'

# Conflicts:
#	backend/services/podcast/broll_composer.py
#	backend/services/podcast/broll_service.py

backend/services/podcast/broll_service.py

@@ -139,9 +139,13 @@ class BrollService:
                 background_img=background_img_path,
                 avatar_video=avatar_video_path,
             )
+            scene_temp_dir = self.get_output_path(
+                f"scene_assets_{scene_id_safe}_{uuid.uuid4().hex[:8]}"
+            )
+            scene_temp_dir.mkdir(parents=True, exist_ok=True)
             
             # Generate the scene
-            scene = dispatch_scene(insight, assets)
+            scene = dispatch_scene(insight, assets, temp_dir=scene_temp_dir)
             
             # Write video
             compose_video([scene], output_path=out_path)