Module coupling 

Co-change coupling store + ranker-signal integration.

Populated by a bounded git-history walker; queried at rerank time to promote files and symbols that historically ride with the query’s anchor. This module owns storage, cold-build, HEAD-delta updates, lazy preparation, and ranker-facing evidence for co-change signals.

Re-exports

pub use lifecycle::LazyPrepareOutcome;

pub use lifecycle::coupling_prepare_policy_from_env;

pub use lifecycle::init_coupling_store;

pub use lifecycle::open_existing_coupling_store;

pub use lifecycle::refresh_on_reconcile_tick;

pub use lifecycle::start_lazy_prepare;

pub use store::CouplingRow;

pub use store::CouplingStore;

pub use walker::DeltaOutcome;

pub use walker::WalkerConfig;

pub use walker::WalkerStats;

pub use walker::apply_head_delta;

pub use walker::cold_build;

Modules

lifecycle

Phase 3.1 — coupling store lifecycle.

schema

Schema DDL and migration constants for the coupling store.

store

Persistent store for co-change coupling evidence.

walker

Cold-build + incremental delta walker.

Structs

AnchorKey

Namespaced key identifying one endpoint of a coupling edge.

Enums

Granularity

Granularity of a coupling edge. File-level and symbol-level rows coexist in the same table, distinguished by the AnchorKey prefix.