{
  "artifact": "Bias-preservation and matched-overhead worksheet",
  "chapter": "Cat Qubits and Bosonic Encodings",
  "chapter_url": "https://www.steven-geller.com/playground/quantum/book/60-cat-qubits-and-bosonic-encodings/",
  "date_modified": "2026-08-14",
  "dependencies": [],
  "expected_exit_code": 0,
  "expected_stdout": "PASS: 60 bias evidence per_operation={'idle': 100.0, 'entangle': 2.0, 'readout': 1.5} degraded_min=1.143 schema_rejected=True\n",
  "fixture_sha256": "58caf32c64583605ee58f42451cfd6fa304d4ad6f43099eb22c93000d9a47b4b",
  "manifest_test_command": "python3 tools/validate_briefs.py --briefs data/editorial_briefs_36_63.json --from 36 --through 63 --check-rewritten-sources --execute-artifacts",
  "pass_condition": "Schema refuses a single unlabeled bias value; comparison uses the same logical target and operation set; any current empirical cell has source/date/protocol.",
  "python_requires": ">=3.11",
  "run_command": "python3 fixture.py",
  "schema_version": "1.1.0",
  "test_method": "Run the isolated fixture; require exit code 0 and exact stdout."
}