26B-A4B lens mapped: 30 layers (not 48), same early-persist/terminal-motor family as E4B+31B; patched save delivered full regimes.pt incl. per-layer ignition; 5-scale figure complete

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

results/REGIMES.json

@@ -48,12 +48,12 @@
  },
  "google/gemma-4-26B-A4B-it": {
   "revision": "01e5b3ee840d3a9e0b0b493c593e85398a30ef75",
-  "num_layers": null,
+  "num_layers": 30,
-  "hidden": null,
+  "hidden": 2816,
   "workspace_band": null,
   "kv_share_start": null,
-  "jbar": "pending (H100 pipeline v4)",
+  "jbar": "bucket:results-lens/jbar_26b_a4b.pt (256/256 prompts)",
-  "scan": "pending",
+  "scan": "results/exp4_26b_a4b.log + results/regimes_26b_a4b.pt (saved directly \u2014 first scan through the patched exp4_regimes.py; includes full per-layer ignition tensors)",
-  "status": "queued after 31B; MoE \u2014 lens validity check required before trusting band"
+  "status": "mapped 2026-07-16, PROVISIONAL: only 30 layers (MoE, A4B active; num_kv_shared_layers=0 in config \u2014 all entrances structurally live). Same family pattern as E4B/31B, NOT E2B: persistence bump EARLY and thin (L5-6, 0.33/0.25), then flat ~0.03-0.08; sensor lobe L10-18 (peak 0.21@L13); motor weak and only terminal (0.11@L29); content high throughout mid (0.6-0.93). Ignition heavily saturated (many +/-1.00 cells) but write-responsive late: L22-26 commitment flips to the written concept at w>=0.5 on all three pairs (dog/piano L26 -1.00 -> +1.00). MoE lens-validity check still required before trusting any band; no band entered."
  }
 }

results/exp4_26b_a4b.log

@@ -0,0 +1,57 @@
+
+Loading weights:   0%|          | 0/1013 [00:00<?, ?it/s]
+Loading weights: 100%|██████████| 1013/1013 [00:00<00:00, 11419.56it/s]
+layer | sensor(top==cur) motor(top==next) persist(top10 Jaccard) content-word
+L 0 | 0.00                      | 0.00                      | 0.07 | 0.82
+L 1 | 0.00                      | 0.00                      | 0.08 | 0.48
+L 2 | 0.00                      | 0.00                      | 0.18 | 0.64
+L 3 | 0.00                      | 0.00                      | 0.08 | 0.61
+L 4 | 0.00                      | 0.00                      | 0.08 | 0.87
+L 5 | 0.00                      | 0.00                      | 0.33 | 0.93
+L 6 | 0.00                      | 0.00                      | 0.25 | 0.93
+L 7 | 0.00                      | 0.00                      | 0.15 | 0.57
+L 8 | 0.07 #                    | 0.00                      | 0.05 | 0.40
+L 9 | 0.07 #                    | 0.00                      | 0.06 | 0.79
+L10 | 0.18 ###                  | 0.01                      | 0.04 | 0.66
+L11 | 0.17 ###                  | 0.01                      | 0.04 | 0.64
+L12 | 0.14 ##                   | 0.01                      | 0.04 | 0.72
+L13 | 0.21 ####                 | 0.02                      | 0.05 | 0.64
+L14 | 0.16 ###                  | 0.02                      | 0.03 | 0.65
+L15 | 0.12 ##                   | 0.03                      | 0.04 | 0.59
+L16 | 0.12 ##                   | 0.02                      | 0.03 | 0.72
+L17 | 0.14 ##                   | 0.04                      | 0.02 | 0.62
+L18 | 0.12 ##                   | 0.02                      | 0.03 | 0.60
+L19 | 0.07 #                    | 0.04                      | 0.04 | 0.71
+L20 | 0.09 #                    | 0.01                      | 0.05 | 0.79
+L21 | 0.09 #                    | 0.02                      | 0.04 | 0.87
+L22 | 0.09 #                    | 0.04                      | 0.06 | 0.91
+L23 | 0.10 #                    | 0.05                      | 0.08 | 0.87
+L24 | 0.08 #                    | 0.06 #                    | 0.08 | 0.88
+L25 | 0.07 #                    | 0.06 #                    | 0.07 | 0.80
+L26 | 0.07 #                    | 0.07 #                    | 0.08 | 0.80
+L27 | 0.07 #                    | 0.07 #                    | 0.07 | 0.85
+L28 | 0.06 #                    | 0.09 #                    | 0.05 | 0.80
+L29 | 0.00                      | 0.11 ##                   | 0.05 | 0.38
+
+ignition: commitment C=(P1-P2)/(P1+P2) at read pos, by layer
+pair            | w:   0.00  0.25  0.50  0.75  1.00
+dog/piano     L 2 | +1.00  +1.00  +1.00  +1.00  +1.00
+dog/piano     L 6 | -0.74  -0.75  -0.83  -0.80  -0.81
+dog/piano     L10 | +0.58  +0.63  +0.91  +0.92  +0.92
+dog/piano     L14 | +0.85  +0.17  +0.69  +0.81  +0.15
+dog/piano     L18 | -0.00  -0.01  +0.66  +0.94  +0.67
+dog/piano     L22 | +0.94  +0.93  +0.98  +1.00  +1.00
+dog/piano     L26 | -1.00  -1.00  +0.39  +1.00  +1.00
+ocean/violin    L 2 | +1.00  +1.00  +1.00  +1.00  +1.00
+ocean/violin    L 6 | +1.00  +1.00  +1.00  +1.00  +1.00
+ocean/violin    L10 | +0.00  +0.00  +0.00  +0.00  +0.00
+ocean/violin    L14 | +0.00  +0.00  +0.00  +0.00  +0.00
+ocean/violin    L18 | +0.00  +0.00  +0.29  +0.27  +0.00
+ocean/violin    L22 | +0.98  +0.28  +1.00  +1.00  +1.00
+ocean/violin    L26 | -0.56  -0.26  +0.98  +1.00  +1.00
+dragon/bicycle   L 2 | +0.00  +0.00  +0.00  +0.00  +0.00
+dragon/bicycle   L 6 | -1.00  -1.00  -1.00  -1.00  -1.00
+dragon/bicycle   L10 | +0.00  +0.00  +0.00  +0.00  +0.00
+dragon/bicycle   L14 | +0.00  +0.00  +0.00  +0.00  +0.00
+dragon/bicycle   L18 | +0.00  +0.00  +0.00  +0.00  +0.00
+dragon/bicycle   L22 | +0.98  +0.40  +1.00  +0.86  +0.91