Add timestamp and username

app.py

@@ -156,8 +156,6 @@ def detect_with_model(image: Image.Image, prompt: str, username: str, model_name
         image_filename = f"{image_id}.jpg"
         image_path = os.path.join(image_dir, image_filename)
         image.save(image_path)
-        current_time = 
-
 
         csv_path = os.path.join("test", "leaderboard_entries.csv")
         header = "file_name,prompt,label,model,split,user,timestamp\n"