a3545d12e9
Error 479 was still occurring even with legacy listMessage format. The issue is that listType must be PRODUCT_LIST (not SINGLE_SELECT) to match the biz node type="product_list" v="2" that we're injecting. This matches pastorini's working implementation exactly: - listMessage with listType: PRODUCT_LIST - biz node with type="product_list" v="2" https://claude.ai/code/session_01Vgu4xrsj8aUVCHWb4pmQPF