{
  "artifact": "Oracle contract and cost-ledger schema",
  "chapter": "Oracles and Query Complexity",
  "chapter_url": "https://www.steven-geller.com/playground/quantum/book/27-oracles-and-query-complexity/",
  "date_modified": "2026-08-14",
  "dependencies": [],
  "expected_exit_code": 0,
  "expected_stdout": "PASS: 27 oracle ledger middle_queries=8 boundary_queries=1 invalid_target=True\n",
  "fixture_sha256": "976a4185e0b1da82ebceb775734c8977ca7eef1717d634191997c93866af650f",
  "manifest_test_command": "python3 tools/validate_briefs.py --briefs data/editorial_briefs_00_35.json --from 0 --through 35 --check-rewritten-sources --execute-artifacts",
  "pass_condition": "Tests unitary action on every small input, verifies kickback equivalence, and rejects ledgers with unpriced construction or verification.",
  "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."
}