CHAIN_13 lever R — full-helix verdict (reach corridor on the 6-DOF)

Bars registered before the runs (chain file launch record, commit 8fedec7): derate fraction improves, pe_p99 < 0.2, coverage >= 0.99, completed. Metric definitions = run_mission.analyze (gates evaluated on the operational window, t > 90 s startup to completion).

• rs 0.45: FAILS (derate 0.644->0.766, pe_p99 0.1644, coverage 0.9981, completed True)
• rs 0.40: PASSES the registered bars (derate 0.644->0.637, pe_p99 0.1586, coverage 0.9978, completed True)

Adoption is the USER’s call (re-pin consequences per pre_risk.md §3b); this verdict only applies the registered bars.

Interpretation (curated — the regen line covers the tables above only)

• The buried headline is completion: rs 0.40 finishes the helix 29% faster (1070.8 → 762.6 s) with pe_p99 −4%, ze_p99 −10%, nu_jump −3%, coverage ≥ 0.99. By the protocol’s printed ranking (gates → pe_p99 → completion → dwell) it DOMINATES the incumbent.

• The derate FRACTION is a denominator artifact here: both derated steps and total steps shrank. Absolute derated time: incumbent ≈ 0.644·(1070.8−90) ≈ 631 s; rs 0.40 ≈ 0.637·(762.6−90) ≈ 428 s — a 32% cut the fraction metric hides. (pe_med rose 0.071 → 0.102: less crawling = the reference moves faster; the gate metric is p99, which improved.)

• The screens reversed on the full helix (round-3 lesson, now enforced by the registered full-helix bars): the 200 s southern-cap screens showed derate → 0.000 at rs 0.45; the full helix shows 0.45 WORSE overall — the reach demand varies pole-to-pole (the Jun-8 “no static geometry tracks it” finding, reproduced at the standoff knob). A static corridor trades bands; a PHASE-VARYING corridor is the v2 idea, and the parked 6-DOF schedule-κ oracle re-registration is exactly the instrument to design it offline (speed × standoff was always its grid).

• ±2% probes (AMENDMENT 2) — rs 0.40 is ROBUST:

  variant	derate frac	pe_p99	ze_p99	coverage	completed	t_complete
  −2% (0.882)	0.619	0.1581	0.0492	0.9969	True	775.9
  nominal (0.90)	0.637	0.1586	0.0495	0.9978	True	762.6
  +2% (0.918)	0.685	0.1586	0.0495	0.9976	True	753.5

All gates pass at all three speeds; pe_p99 is nearly speed-invariant (0.158 flat, vs the incumbent’s 0.1651/0.1703/0.1660) and completion stays 753–776 s. Not fragile by the protocol rule. The adoption case is complete — dominance at nominal plus robustness under ±2%. Adoption itself is the user’s call (one deliberate re-pin of all 5 baselines per pre_risk.md §3b, the Jun-10 ceremony).

regen: /Users/antoniahoffman/miniforge3/envs/new-pin-env/bin/python validation/chain13_r_verdict.py