The primary signal is desiredSize on the controller. It can be positive (wants data), zero (at capacity), negative (over capacity), or null (closed). Producers are supposed to check this value and stop enqueueing when it's not positive. But there's nothing enforcing this: controller.enqueue() always succeeds, even when desiredSize is deeply negative.
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Instruct Codex to optimize benchmarks to 60% of runtime
82 pairs hit SSIM = 0.999 in at least one font. They break into distinct groups.
「像鬼一樣工作」：台灣外籍移工為何陷入「強迫勞動」處境