Update config_provider.py

config_provider.py

@@ -155,11 +155,7 @@ class ConfigProvider:
                 
                 # Check for race condition
                 if config.last_update_date and current_config.last_update_date:
-                    # Tarihleri normalize et                   
-                    expected_normalized = cls._normalize_date(config.last_update_date)
-                    actual_normalized = cls.normalize_date(current_config.last_update_date)
-                    
-                    if expected_normalized != actual_normalized:
+                    if not timestamps_equal(config.last_update_date, current_config.last_update_date):
                         raise RaceConditionError(
                             "Configuration was modified by another user",
                             current_user=username,
@@ -172,8 +168,8 @@ class ConfigProvider:
                 config.last_update_date = get_current_timestamp()
                 config.last_update_user = username
                 
-                # Convert to JSON
-                data = config.to_jsonc_dict()
+                # Convert to JSON - Pydantic v2 kullanımı
+                data = config.model_dump(mode='json')  # to_jsonc_dict yerine model_dump
                 json_str = json.dumps(data, ensure_ascii=False, indent=2)
                 
                 # Atomic write using temp file