quiverdb-simd 0.23.0

SIMD distance kernels for Quiver.
Documentation

SIMD distance kernels for Quiver — cosine, squared-L2, and inner product over f32 and i8, plus Hamming distance over packed-bit (u64) vectors, with runtime CPU-feature dispatch and a scalar fallback.

Each public function selects the best available implementation once per call (is_x86_feature_detected! results are cached by std) and always has a correct scalar fallback. The SIMD paths are differential-tested against the scalar reference. Design: docs/index/distance-kernels.md, ADR-0009.