sft-prompts: declare scored response fields

README.md

@@ -130,6 +130,10 @@ dataset_info:
       dtype: string
     - name: safe
       dtype: string
+    - name: reward_helpful
+      dtype: float64
+    - name: reward_harmless
+      dtype: float64
   - name: preference_pairs
     list:
     - name: helpful_index