{
  "_doc": "Canonical per-model J-lens regime registry. Band = inclusive layer range whose lens readout shows workspace behavior (persist+content high, sensor/motor low; exp4_regimes.py). kv_share_start = first layer reusing KV from below (entrances at or above it are structurally null for band looping). Raw jbar tensors: results/ + bucket results-lens/. Revisions are the pinned model SHAs the scan ran on.",
  "google/gemma-4-E2B-it": {
    "revision": "9dbdf8a839e4e9e0eb56ed80cc8886661d3817cf",
    "num_layers": 35, "hidden": 1536,
    "workspace_band": [14, 30], "kv_share_start": 15,
    "jbar": "results/jbar.pt", "scan": "results/exp4.log",
    "status": "mapped + loop-validated (full program, PAPER.md)"
  },
  "google/gemma-4-12B-it": {
    "revision": "0e2b1058541244490925fbacf8972041435691ac",
    "num_layers": 48, "hidden": 3840,
    "workspace_band": [36, 45], "kv_share_start": null,
    "jbar": "bucket:results-lens/jbar_12b.pt", "scan": "results/exp4_12b.log",
    "status": "mapped + loop-validated (adaptive-alpha required; MBPP only)"
  },
  "google/gemma-4-E4B-it": {
    "revision": "fa62d88df2e6df5efa9d26ad6b3beaea2765f0cd",
    "num_layers": 42, "hidden": 2560,
    "workspace_band": null, "kv_share_start": 25,
    "jbar": "results/jbar_e4b.pt (running 2026-07-15)", "scan": "results/exp4_e4b.log",
    "status": "scan in progress on Spark; kv sharing: last 18 of 42 layers"
  },
  "google/gemma-4-31B-it": {
    "revision": "b9ea41a2887d8607f594846523f94c6cc75ac8a4",
    "num_layers": null, "hidden": null,
    "workspace_band": null, "kv_share_start": null,
    "jbar": "pending (H100 pipeline v4)", "scan": "pending",
    "status": "downloading on rented H100 NVL"
  },
  "google/gemma-4-26B-A4B-it": {
    "revision": "01e5b3ee840d3a9e0b0b493c593e85398a30ef75",
    "num_layers": null, "hidden": null,
    "workspace_band": null, "kv_share_start": null,
    "jbar": "pending (H100 pipeline v4)", "scan": "pending",
    "status": "queued after 31B; MoE — lens validity check required before trusting band"
  }
}