Windows compatibility

gemini_for_enonce.py

@@ -10,6 +10,7 @@ from typing import List, Union
 from google import genai
 from google.genai import types
 from concurrent.futures import ThreadPoolExecutor
+from platform_utils import validate_windows_labels
 from utils import compile_to_pdf
 
 def get_lcp(s1: str, s2: str) -> str:
@@ -602,6 +603,7 @@ def process_exam(folder_path: str, restart: bool = False):
         break
 
     labels_list = [item.label for group in grouped_items for item in group if isinstance(item, QuestionItem)]
+    validate_windows_labels(labels_list)
 
     # Save labels and proceed
     with open(folder / "labels", 'w', encoding='utf-8') as f_labels: