Update config_provider.py

config_provider.py

@@ -258,8 +258,8 @@ class ConfigProvider:
             
             return project
     
-    @classmethod
-    def update_project(cls, project_id: int, update_data: dict, username: str) -> ProjectConfig:
+@classmethod
+    def update_project(cls, project_id: int, update_data: dict, username: str, expected_last_update: Optional[str] = None) -> ProjectConfig:
         """Update project with optimistic locking"""
         with cls._lock:
             config = cls.get()
@@ -269,8 +269,8 @@ class ConfigProvider:
                 raise ResourceNotFoundError("project", project_id)
             
             # Check race condition
-            if 'last_update_date' in update_data:
-                if project.last_update_date != update_data['last_update_date']:
+            if expected_last_update is not None:
+                if project.last_update_date != expected_last_update:
                     raise RaceConditionError(
                         f"Project '{project.name}' was modified by another user",
                         current_user=username,
@@ -282,7 +282,7 @@ class ConfigProvider:
             
             # Update fields
             for key, value in update_data.items():
-                if hasattr(project, key) and key not in ['id', 'created_date', 'created_by']:
+                if hasattr(project, key) and key not in ['id', 'created_date', 'created_by', 'last_update_date']:
                     setattr(project, key, value)
             
             project.last_update_date = datetime.utcnow().isoformat()