hpke-ng: Faster, Smaller, Harder HPKE for Rust
Across 62 head-to-head benchmarks against hpke-rs, hpke-ng wins 43 — including ML-KEM decap at 53–55% faster, X-Wing decap at 38%, X25519 decap at 41%, and every post-quantum encap/decap row a clean win — ties 14, ships a 30% smaller binary, and a type system that catches four classes of bug at compile time.
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