Function codebaseFitScore

src/skills/learning/codebase-fit.ts:55–59

(hints: string[], exists: (name: string) => boolean)

 * Score how many of a skill's identifier hints exist in the codebase. `exists` is injected
 * (e.g. name => codeGraph.findSymbolsByName(name).length > 0). PURE. */
export function codebaseFitScore(hints: string[], exists: (name: string) => boolean): CodebaseFit {
  if (hints.length === 0) return { score: 0, matched: [], total: 0, noSignal: true };
  const matched = hints.filter(h => { try { return exists(h); } catch { return false; } });
  return { score: matched.length / hints.length, matched, total: hints.length, noSignal: false };
}

/** A one-line note for the judge prompt / candidate metadata. Empty when there's no signal. */
export function fitNote(fit: CodebaseFit): string {