The problem compounds in pipelines. Each TransformStream adds another layer of promise machinery between source and sink. The spec doesn't define synchronous fast paths, so even when data is available immediately, the promise machinery still runs.
throw new Error('Integrity check failed.');
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（二）移动、损毁国家边境的界碑、界桩以及其他边境标志、边境设施或者领土、领海基点标志设施的；
Correlate — Links tool-use requests in assistant messages to their results in user messages via tool_use_id. This is how file content (which only appears in results, not requests) gets attached to each operation.