//! EVE-837 dependency-direction guard.
//!
//! The allowed identity-crate direction is `everruns-platform -> everruns-core`.
//! `everruns-core` must never gain a dependency edge back on
//! `everruns-platform`; if it did, the two crates would form a cycle and the
//! platform aggregates could no longer be carved out of core. This test fails
//! the core build the moment a manifest edit introduces the reverse edge.
use Path;