exp008 s1: surgical band specialization 2-SEED CONFIRMED; s0's marginal per-band win was noise (0/3 s1); monolith edge robust

exp008_multiband/README.md

@@ -49,3 +49,12 @@ controller at inference with the generation-side lesion battery.
 **Caveats.** s0 (s1 replicating now); uniform objective by design; one
 substrate; band edges fixed at 0.35/0.75. Cost ≈ 2.8 GPU-h.
 Checkpoints: `mb3_s0.pt`, `mono48_s0.pt`.
+
+---
+## SEED-1 REPLICATION (2026-07-17, `results_s1.json`) — SURGICAL SPECIALIZATION 2-SEED
+P4 replicates almost exactly (band0 own-damage 0.005958 vs 0.005911; 3/3
+surgical both seeds) — band assignment reliably produces decoupled band
+specialists. s0's marginal band2 own-band win did NOT replicate (0/3 on s1)
+— under a uniform objective there is NO per-band win; the monolith edge is
+2-seed robust. Verdict sharpened: mechanism CONFIRMED, payoff awaits the
+role objectives (exp009).

exp008_multiband/results_s1.json

@@ -0,0 +1,99 @@
+{
+  "config": {
+    "bands": 3,
+    "edges": [
+      0.35,
+      0.75
+    ],
+    "xfade": 0.06,
+    "rank": 16,
+    "steps": 3000,
+    "batch": 16,
+    "lr": 0.001,
+    "seed": 1,
+    "substrate": "core epred"
+  },
+  "frozen": {
+    "val": 0.1247876692286809,
+    "per_band": {
+      "band0": 0.256406,
+      "band1": 0.064227,
+      "band2": 0.008726
+    },
+    "band_n": {
+      "band0_n": 98,
+      "band1_n": 98,
+      "band2_n": 60
+    }
+  },
+  "multiband3": {
+    "n_params": 1235568,
+    "val": 0.12197013242348476,
+    "per_band": {
+      "band0": 0.250386,
+      "band1": 0.062999,
+      "band2": 0.008543
+    },
+    "val_toggled_off": 0.1247876692286809,
+    "s_per_step": 1.684,
+    "lesions": {
+      "lesion_band0": {
+        "band0": 0.256344,
+        "band1": 0.063056,
+        "band2": 0.008543
+      },
+      "lesion_band1": {
+        "band0": 0.250398,
+        "band1": 0.06408,
+        "band2": 0.008553
+      },
+      "lesion_band2": {
+        "band0": 0.250386,
+        "band1": 0.063007,
+        "band2": 0.008693
+      }
+    },
+    "gates": [
+      0.0656,
+      0.0641,
+      0.0591
+    ]
+  },
+  "monolith": {
+    "n_params": 1210576,
+    "val": 0.12174508127736772,
+    "per_band": {
+      "band0": 0.249925,
+      "band1": 0.062876,
+      "band2": 0.008538
+    },
+    "s_per_step": 1.656
+  },
+  "verdict": {
+    "P1_multiband_vs_monolith": "monolith",
+    "P2_per_band_wins": {
+      "band0": false,
+      "band1": false,
+      "band2": false
+    },
+    "P4_lesion_asymmetry": {
+      "band0": {
+        "own_damage": 0.005958,
+        "other_damage": 2.9e-05,
+        "surgical": true
+      },
+      "band1": {
+        "own_damage": 0.001081,
+        "other_damage": 1.1e-05,
+        "surgical": true
+      },
+      "band2": {
+        "own_damage": 0.00015,
+        "other_damage": 4e-06,
+        "surgical": true
+      }
+    },
+    "param_ratio": 1.021,
+    "note": "seed 1; mechanism test \u2014 roles enter in exp009"
+  }
+}