rafinery

The retrieval plane — rafa's deterministic lexical scorer, the typed knowledge graph it walks, the entry-point router, rank fusion, and the retrieval-quality metrics (recall@k, MRR) that gate all of it. Pure functions, no I/O, zero dependencies.

The knowledge-graph plane — the node/edge schema GENERATED from the OKF file-class registry, typed edge derivation with trust grades, and the query planner the served read path and the benchmark both run. Pure functions, no I/O.