{
  "artifact": "SZLHOLDINGS/szl-blocked surrogate v1",
  "role": "BLOCK/ALLOW decision triage surrogate \u2014 kernel remains ground truth",
  "generator": {
    "script": "scripts/forge.py",
    "seed": 20260721,
    "kernel_version": "0.1.0",
    "kernel_labelled": true,
    "kernel_audited_samples": 600,
    "policy": "deny_by_default([allow_if_capability('run_norm'), deny_if_flag('exfiltration'), deny_if_action_in({'exfiltrate','delete_all','drop_table'})])",
    "lambda_threshold": 0.5
  },
  "data": {
    "rows": 24000,
    "classes": [
      "ALLOW",
      "BLOCK_HARD",
      "BLOCK_ADVISORY"
    ],
    "class_counts": {
      "ALLOW": 2713,
      "BLOCK_HARD": 18357,
      "BLOCK_ADVISORY": 2930
    },
    "split": "80/20 stratified",
    "features": [
      "has_required_capability",
      "n_capabilities",
      "action_blocklisted",
      "hard_flag_set",
      "advisory_axes_present",
      "n_axes",
      "axes_min",
      "axes_mean",
      "axes_any_zero"
    ],
    "feature_policy": "structural observables of the request + advisory \u039b axes only; the surrogate never signs receipts or replaces the policy chain"
  },
  "model": {
    "type": "sklearn.HistGradientBoostingClassifier",
    "params": {
      "max_iter": 300,
      "early_stopping": true,
      "random_state": 20260721
    },
    "file": "model.joblib",
    "sha256": "15f0537cd323aff977ff3d5abec065f1144693fe0ab99d5cbd0961fe3b8e7610"
  },
  "metrics_MEASURED": {
    "fidelity_vs_kernel_heldout": 0.9977,
    "test_accuracy": 0.9977,
    "per_class_recall": {
      "ALLOW": 0.9963,
      "BLOCK_HARD": 1.0,
      "BLOCK_ADVISORY": 0.9846
    }
  },
  "environment": {
    "python": "3.12.12",
    "sklearn": "1.9.0",
    "numpy": "2.5.1",
    "host": "replit 2-vCPU container",
    "wall_seconds": 1.0
  },
  "honesty": "Every number above is MEASURED by this run. Fidelity = agreement%% with GovernedGate.decide on a held-out split. The surrogate is a fast pre-gate; the kernel's honest-BLOCKED policy chain stays authoritative. \u039b untouched = Conjecture 1.",
  "trained_at_utc": "2026-07-21T02:49:46Z"
}