stage0.ts

Overview

@file Stage 0 baseline D: the lexical floor, measured. Recall@k here is a retrieval metric, so this runs with no API key, no network and no model call. That matters: the Stage 0 gate can be decided for $0, and only the baselines that are somebody else's hosted service cost anything. A gold anchor counts as retrieved when a returned chunk covers the line that actually contains its expect substring at HEAD. That is the same test as "the citation resolves to the right lines at a pinned SHA", which is the third weighted stratum, so citation correctness is not scored separately for this baseline — it is what recall already means here.

depends on corpus.ts golden.ts retrieve.ts

flowchart TD
  hitAt --> covers