Phase 1: Compatibility skeleton complete. Native-Rust forensic reimplementation of libxml2+libxslt with C ABI drop-in replacement. 62 tests passing, ABI courts verified, C headers compatible, Docker oracle built.
//! Version compatibility profiles (§68, §85 Phase 11).
//!//! Version-aware profiles that allow libxml-rs to emulate the behavior of
//! specific historical upstream versions.
//!//! Phase 0: scaffolded.