in app/feedback.py [0:0]
def save_feedback(input_object: dict) -> None:
"""
Append input/outputs and user feedback to a JSON Lines file using a thread lock to avoid concurrent writes from different users.
"""
with scheduler.lock:
with feedback_file.open(mode="a") as f:
f.write(json.dumps(obj=input_object))
f.write("\n")