//! Entity graph traversal (BFS over memory_entities + relations).
//!
//! Queries the SQLite entity and relation tables to expand neighbourhood
//! sets used by the `related`, `recall`, `hybrid-search`, `deep-research` and
//! `graph traverse` commands.
//!
//! `walk` holds the single BFS engine; the other modules are thin adapters.
//! `traverse` answers "which memories are within N hops", `bfs` additionally
//! records the predecessor of each entity so evidence chains can be
//! reconstructed.
pub use ;
pub use ;
pub use ;