Commit History
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Phase 56: NEW CHAMPION logbag_rank + gbm rank-blend w=0.30 (purge 1630.3, was 1972.0)
Thibaut Forest +1: Claude Opus 5 (1M context)11-lane agent campaign, ~250 candidates, all paired on the deterministic purge harness. Champion: within-fleet rank features (r_vlast/r_tau) on the bagged logistic + gbm value-preserving order blend - ordering-only, swaps flat 9.23, wins all three blocks (-341.7 +/- 103.8, 37W/11L). Deployed as submit.py FrontierRUL; fidelity vs the CV candidate is bit-exact (s_10/s_30). Dials: BATTERYSWAP_FRONTIER=0 -> legacy logbag; BATTERYSWAP_FRONTIER_W2=0 -> plain logbag_rank (purge 1746.4, no gbm flattery exposure). cv.py CHAMPION carries the blend; regenerated baseline matches the campaign run bit-for-bit. Instrument calibration (campaign's key negative): the purge rewards the two classes the public refuted - count-coupled changes (alpha 1.5: purge -202 vs public +527) and label-process exploits (cert-first re-derived at its exact pre-refutation signature 3W/0L/45T). Shipping bar recorded: ordering-only, label-process-free, swaps flat. Report-only survivors and full per-lane records in agent_re…698401a