The isinstance(workflow_span, StreamedSpan) branch that sets GEN_AI_CONVERSATION_ID in the run_streamed wrapper is untested. The conversation_id tests (test_conversation_id_on_all_spans, test_conversation_id_on_tool_span, test_no_conversation_id_when_not_provided) all exercise Runner.run(), never Runner.run_streamed() with a conversation_id, so neither the set_attribute (StreamedSpan) nor the wrapper's conversation-id handling on the streamed path is covered.