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wassname
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Replace the confounded route2 gate (hack_anchor force-routed teacher + weak-detector student rows by LABEL; EMA tau calibrated from a live detector over student rollouts at train time = a cheat) with a band calibrated from the contrastive pairs alone: lower = mean clean-pair cos(g, v_grad); upper = mean hack-pair cos per rollout: f = clamp((cos(g_b, v_grad) - lower)/(upper - lower), 0, 1) routed = sum_b f_b * g_b -> delta_S_hack; kept = g - routed -> delta_S v_grad is now the SOLE router: no detector or gt_pass touches routing, so "does v_hack generalize to held-out modes" is clean and random-vs-real is decisive. Band width (upper-lower) is itself the discriminator: smoke shows +0.289 real vs -0.014 Haar-random (collapsed). conservation routed+kept=g holds exactly; resid~0 in smoke (no hack leak into the deployed knob). - delete build_route2_anchors + EMA state (ema_hack/clean_cos, route2_tau) - add route_band_edges(); build at extract, rebuild on v_grad refresh - drop --gate-anchor-teacher-only config + retire scripts/verify_gate_anchor.py - teacher rollouts now route through the same band (not force-routed) - spec: add the mass-confound control (scientist review 2026-06-06) smoke-route2 + smoke-route2 --route2-random-v-seed=7 both pass; erase smoke green. Co-Authored-By: Claudypoo <288921227+claudypoo@users.noreply.github.com>