patch oko teksta PDFa i UI tablica

backend/modules/task_management/services.py

@@ -18,6 +18,9 @@ class TaskService:
             raise ValidationError({"status": "Samo admini mogu odmah označiti zadatak kao gotov."})
 
         payload = dict(data)
+        title = (payload.get('title') or '').strip()
+        if title and len(title) < 3:
+            raise ValidationError({"title": "Naslov zadatka mora imati barem 3 znaka."})
         if user and 'assigned_to' not in payload:
             payload['assigned_to'] = user
 
@@ -40,6 +43,8 @@ class TaskService:
         # Spremanje
         for attr, value in data.items():
             setattr(instance, attr, value)
+        if 'title' in data and len(str(data.get('title') or '').strip()) < 3:
+            raise ValidationError({"title": "Naslov zadatka mora imati barem 3 znaka."})
         try:
             instance.full_clean()
         except DjangoValidationError as exc: