pixels checkpoint list
`Time paradox detected! Workflow asked for '${stepName}', but trace recorded '${recordedEvent.command}'`
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Unconsumed bodies: Pull semantics mean nothing happens until you iterate. No hidden resource retention — if you don't consume a stream, there's no background machinery holding connections open.
就像智能手机之前融合掉了卡片机、随身听和 PDA 一样，现在的手机也还在不断融合外设配件的功能：抗反射涂层如此，防窥膜亦如此。