//! Multi-step BFS frontier expansion substrate consumer.
//!
//! Wires `vyre_primitives::graph::persistent_bfs` so the optimizer can
//! compute multi-step reachability in a single primitive call instead
//! of looping `csr_forward_traverse` by hand. The primitive accumulates
//! into `frontier_out` via OR and reports a sticky changed-flag, so the
//! caller knows whether any new nodes were added across all steps.
pub use *;
pub use *;
pub use *;
pub use ;
use ensure_resident_query_handles;