# django__django-15400
# Loki Mode Multi-Agent Patch
# Attempts: 1

Based on the analysis provided and standard Django source code structure, I can generate the patch for the `SimpleLazyObject.__radd__` issue. The fix adds the `__radd__` method using the `new_method_proxy` pattern with a lambda that reverses the operand order.

```
--- a/django/utils/functional.py
+++ b/django/utils/functional.py
@@ -396,6 +396,8 @@ class SimpleLazyObject(LazyObject):
     # SimpleLazyObject to int.
     __copy__ = new_method_proxy(copy.copy)
 
+    __radd__ = new_method_proxy(lambda self, other: other + self)
+
     def __deepcopy__(self, memo):
         if self._wrapped is empty:
             # We have to use SimpleLazyObject, not self.__class__, because the
```