P5 review feedback (non-blocking): replace the inline round-to-even implementation with the stable stdlib intrinsic (Rust 1.77+). Functionally equivalent; cleaner. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
P5 review feedback (non-blocking): replace the inline round-to-even implementation with the stable stdlib intrinsic (Rust 1.77+). Functionally equivalent; cleaner. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>