Update app.py

app.py

@@ -85,7 +85,7 @@ def process_files(ai_files, real_files):
 
 def evaluate_model(temp_dir):
     labels, preds, images = [], [], []
-    false_positives, false_negatives = []
+    false_positives, false_negatives = [], []
     detector = AIDetector()
     
     total_images = sum(len(files) for _, _, files in os.walk(temp_dir))