RESULT 60: s345000走廊空(end075更糟3.4805,LR嫌疑排除)→闭合点275-300k,s250000=最后健康点; --res_gate宽度可配+bsign×beta_simple符号抹除bug修复(COMBO_CERT_PASS); fw135m_ratchet从s250000发射(bsign+棘轮+res_gate 1e-3,27h)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn

1 files changed, 6 insertions, 1 deletions

diff --git a/ep_run/casc_eq_train.py b/ep_run/casc_eq_train.py
index eb64082..60b6113 100644
--- a/ep_run/casc_eq_train.py
+++ b/ep_run/casc_eq_train.py
@@ -49,6 +49,10 @@ ap.add_argument('--bsign_rand', action='store_true')  # random-sign beta per ste
 ap.add_argument('--bf16', action='store_true')           # cast model to bf16 (E-accumulation + tok_sigma stay fp32) — the x0.5 cost lever, GATE before production
 ap.add_argument('--amp', action='store_true')            # PROPER mixed precision: autocast(bf16) matmuls, fp32 params/states/d/E — amp_gate.py PASSED 2026-07-12 (cos 0.9682 vs fp32 0.9687); --bf16 naive-cast stays DEAD (state quantization, RESULT 11)
 ap.add_argument('--dtop_every', type=int, default=1)    # 1 = exact (DEFAULT, BP-parity); 2 = fast mode (~20% cheaper, ~4% CE tax at high lr)
+ap.add_argument('--res_gate', type=float, default=0.02)  # legality residual threshold; 0.02 was calibrated
+                                                          # at C512 — C768 ran half a schedule semi-converged
+                                                          # UNDER it (R59b). Per-width rule: ~100x the healthy
+                                                          # K=3 residual floor measured by the rho probe.
 ap.add_argument('--watch_every', type=int, default=2000) # wandb-only telemetry cadence: act/weight RMS
 ap.add_argument('--gate_every', type=int, default=200)  # in-training cos(EP,BP) telemetry; <=0 = fully BP-free (no bp_gate at all)
 ap.add_argument('--gate_govern', action='store_true')   # let gate cos adjust K/bscale (default: observe-only => training control is BP-free)
@@ -503,6 +507,7 @@ def ep_step(x, y):
     if args.beta_simple >= 1.0:
         # FULL ownership: no sigma-scaling, no floor/bf_late, no cap — beta = start * measured multiplier
         beta_t = args.beta * GOV.get('bsimp', 1.0)
+    # sign flip LAST — the beta_simple override must not wipe it (bsign+ratchet combo fix)
     if args.bsign_rand and torch.rand((), generator=BGEN).item() < 0.5: beta_t = -beta_t
     EST = args.est
     if args.est_late and GOV['step'] >= args.est_late_at: EST = args.est_late
@@ -552,7 +557,7 @@ def ep_step(x, y):
             # ~1 (the documented v1-cap starvation bug; Codex's OR resurrected it, the SV2
             # arm caught it: 6-halving storm every step, beta pinned at 4.7e-5). The 35k
             # runaway had res >> 0.02 with rho < 0.9 — res-alone provably plugs that hole.
-            if (not math.isfinite(res_s)) or res_s > 0.02:
+            if (not math.isfinite(res_s)) or res_s > args.res_gate:
                 return False
         return True
     _ok0 = _legal(gdrift)