fix

Author: christothes

src/Custom/Responses/Items/MessageResponseItem.cs

@@ -24,7 +24,7 @@ public MessageRole Role
 
     // CUSTOM: Recombined content from derived types.
     public IList<ResponseContentPart> Content
-        => (this as InternalResponsesUserMessage)?.Content
+        => (this as InternalResponsesUserMessage)?.InternalContent
         ?? (this as InternalResponsesDeveloperMessage)?.InternalContent
         ?? (this as InternalResponsesSystemMessage)?.InternalContent
         ?? (this as InternalResponsesAssistantMessage)?.InternalContent

tests/Responses/ResponseStoreTests.cs

@@ -102,7 +102,7 @@ public async Task GetInputItemsWithMultiPartPagination()
 
             if (item is MessageResponseItem ri)
             {
-                hasMultipleContentParts = ri.Content.Count > 1;
+                hasMultipleContentParts |= ri.Content.Count > 1;
             }
 
             if (totalCount >= 3) break; // Read more than a page to validate pagination