round 3

models/reward.py

@@ -1,3 +1,4 @@
+# python
 from dataclasses import dataclass
 from models.base import BaseModel
 
@@ -10,13 +11,16 @@ class Reward(BaseModel):
 
     @classmethod
     def from_dict(cls, d: dict):
-        obj = cls(
+        # Base fields are keyword-only; can be overridden if provided
+        return cls(
             name=d.get('name'),
             description=d.get('description'),
             cost=d.get('cost', 0),
-            image_id=d.get('image_id')
+            image_id=d.get('image_id'),
+            id=d.get('id'),
+            created_at=d.get('created_at'),
+            updated_at=d.get('updated_at')
         )
-        return cls._apply_base_fields(obj, d)
 
     def to_dict(self):
         base = super().to_dict()