//! Verification utilities: golden registry, replay, and freeze.
/// Per-reference wall-clock budget enforcement.
/// Append-only witness corpus (P1.14): replay + witness format.
/// Differential fuzzing between independent CPU references.
/// Golden sample validation against known-correct reference values.
/// Conformance harnesses H1-H10.
/// 10M-input CPU reference versus kernel parity harness.
/// Algebraic property tests for CPU reference functions.
/// Regression persistence and replay for previously-failing inputs.