Update exceptions.py

exceptions.py

@@ -44,6 +44,15 @@ class RaceConditionError(FlareException):
         self.current_user = current_user
         self.last_update_user = last_update_user
         self.last_update_date = last_update_date
+    
+    def to_http_detail(self) -> Dict[str, Any]:
+        """Convert to HTTPException detail format with proper serialization"""
+        return {
+            "message": self.message,
+            "last_update_user": self.last_update_user,
+            "last_update_date": self.last_update_date.isoformat() if isinstance(self.last_update_date, datetime) else self.last_update_date,
+            "type": "race_condition"
+        }
 
 class ConfigurationError(FlareException):
     """Raised when there's a configuration issue"""