nx_diora_leaderboard.nx

nx_diora_leaderboard.nx -- the bits-up search leaderboard, run on the verified Diora Baird qrels vs 4 live-captured incumbents. module: nishi-core.search.bench.diora_leaderboard depends: fx.nx, nx_bench_harness.nx, nx_diora_data.nx capability: APP_RUNNABLE + GATE WHY: prove the operator cardinal -- S-CLASS EXCEED, not sovereignty-as-win. Every score is produced by the sovereign Q16.16 kernels (zero C on the output path). The incumbent SERPs are live captures used ONLY as 1:1 measurement baselines; they are NOT a Nishi index. Nishi's row is its OWN ranking policy (primary-source-first + facet diversity) over the candidate universe. exit 0 == Nishi exceeds EVERY measured incumbent on the research- delivery cardinals (nDCG / primary-precision / altitude, no S-recall regression) -- so this file doubles as a permanent regression gate. HONEST SCOPE (1:1, no proxy): this proves the RANKING + SCORING layer is sovereign and S-class. The document corpus is research-grounded, not yet crawled by our own spider; the sovereign crawler + inverted index (own the INDEX from bits up, not just the ranker) is the next milestone. SREACH R2 (2026-06-10): the facet-oracle-from-gold leak is RETIRED -- the re-rank's facets now come from nx_facet_classify (URL/host/title signals, gated vs gold by nx_facet_gate at a permil bar); gold facets feed SCORING only. The ranking also fuses the CONTENT-ACCESSIBILITY axis (operator directive: engagement/media/info-density, not first-hand alone).