将这个 Prompt 保存为你的常用模板，按两段式来跑：
At this point, you may be asking why PRF is part of WebAuthn in the first place.
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Finding these optimization opportunities can itself be a significant undertaking. It requires end-to-end understanding of the spec to identify which behaviors are observable and which can safely be elided. Even then, whether a given optimization is actually spec-compliant is often unclear. Implementers must make judgment calls about which semantics they can relax without breaking compatibility. This puts enormous pressure on runtime teams to become spec experts just to achieve acceptable performance.，更多细节参见搜狗输入法2026
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