{
  "artifact": "Workload-normalized modality matrix",
  "chapter": "Hardware Modality Diligence",
  "chapter_url": "https://www.steven-geller.com/playground/quantum/book/74-hardware-modality-diligence/",
  "date_modified": "2026-08-14",
  "dependencies": [],
  "expected_exit_code": 0,
  "expected_stdout": "PASS: 74 modality matrix selected=device-a duration={'device-a': 1000} invalid=['device-a:gate_duration_schema', 'device-b:conversion,conversion_schema', 'device-c:fidelity_method'] budget900ns=not-comparable\n",
  "fixture_sha256": "9bd6d921e2c7d39efeeb437f1a07cf53c65d161ccc9a56320fb34a44c95fcab2",
  "manifest_test_command": "python3 tools/validate_briefs.py --briefs data/editorial_briefs_64_87.json --from 64 --through 87 --check-rewritten-sources --execute-artifacts",
  "pass_condition": "Rows cannot be ranked unless workload, fidelity method, topology, gate duration, readout, and conversion overhead are all comparable; missing fields produce 'not comparable'.",
  "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."
}