/**
 * ADR-121 Phase 11 — RRF fusion tests.
 *
 * Coverage:
 *  - Single-list fusion is a no-op (preserves rank order)
 *  - Items appearing in MORE lists rank above items appearing in FEWER
 *  - k_rrf default = 60 (SIGIR 2009)
 *  - k_rrf affects the contribution decay shape
 *  - Per-list weights bias the fused score
 *  - Empty lists, empty input, k clamping
 *  - Tie-break is stable on id (alphabetical)
 *  - Hand-computed exact scores on a small example
 *  - Payload is preserved from the first list the item appears in
 */
export {};
//# sourceMappingURL=rrf.test.d.ts.map