feat: add quant engine WBS verification harness

tools/validate_golden_coverage_100.py

@@ -109,6 +109,24 @@ def main() -> int:
     ok_ratio = ratio >= COVERAGE_TARGET
     ok_critical = len(critical_missing) == 0
 
+    # 정직성 표기 (QE-M0-06): 이 게이트는 golden 케이스/파일의 "존재 수"만 집계한다.
+    # tests/golden/generated/ 의 174개 파일은 실행되지 않는 placeholder이며, 수치
+    # 실행 검증은 M3의 factor parity 게이트(validate_factor_parity_v1)로 대체된다.
+    payload = {
+        "formula_id": "GOLDEN_COVERAGE_100_V1",
+        "gate": "PASS" if (ok_ratio and ok_critical) else "FAIL",
+        "coverage_basis": "FILE_COUNT_ONLY",
+        "golden_coverage_ratio": ratio,
+        "yaml_formula_count": total,
+        "golden_test_count": golden,
+        "critical_missing": sorted(critical_missing),
+        "uncovered_count": len(uncovered),
+        "note": "coverage counts YAML golden-case entries/files only; generated golden test stubs are not executed",
+    }
+    out_path = ROOT / "Temp" / "golden_coverage_100_v1.json"
+    out_path.parent.mkdir(parents=True, exist_ok=True)
+    out_path.write_text(json.dumps(payload, ensure_ascii=False, indent=2), encoding="utf-8")
+
     print(f"[GOLDEN_COVERAGE_100] total={total} golden={golden} ratio={ratio:.4f} "
           f"({'≥' if ok_ratio else '<'}{COVERAGE_TARGET}) "
           f"critical_missing={len(critical_missing)}")