#!/usr/bin/env python3
"""Grader tamper check: gold replies must fail when the answer key is deliberately mutated."""
import copy
import json
import sys
from pathlib import Path
ROOT = Path(__file__).resolve().parents[1]
sys.path.insert(0, str(ROOT / "environment" / "src"))
from binary_reasoning_v1.grading import _answer_symbol, grade_item, needs_judge, norm_symbol # noqa: E402
def resolve_path():
if len(sys.argv) > 1:
return Path(sys.argv[1])
for p in (ROOT / "sample_free.jsonl", ROOT / "environment/src/binary_reasoning_v1/items.jsonl"):
if p.exists():
return p
raise SystemExit("no sample JSONL found; pass one as argv[1]")
def load_rows(path):
rows = []
for line in path.read_text(encoding="utf-8").splitlines():
if line.strip():
rows.append(json.loads(line))
return rows
def parse_json_answer(ans):
if isinstance(ans, dict):
return ans
if isinstance(ans, str):
try:
obj = js…
