{
  "artifact": "Small-code correctable-error matrix",
  "chapter": "Repetition, Bit-Flip, Phase-Flip, and Shor Codes",
  "chapter_url": "https://www.steven-geller.com/playground/quantum/book/48-repetition-bit-flip-phase-flip-and-shor-codes/",
  "date_modified": "2026-08-14",
  "dependencies": [],
  "expected_exit_code": 0,
  "expected_stdout": "PASS: 48 code evidence classes=9 single_X=[0, 0, 0, 1, 1, 1] double_X=1\n",
  "fixture_sha256": "b829bfc65907eb25f1b43fd4d29078007f4411928a9196c35a217df019cd7803",
  "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": "Existing single-bit test passes for both codewords; phase cases round-trip through H; every listed single-qubit Pauli maps to its declared syndrome class without measuring logical value.",
  "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."
}