feat(dotnet): add domain parity artifact gate

tools/validate_dotnet_domain_parity_artifact_v1.py

@@ -0,0 +1,57 @@
+#!/usr/bin/env python3
+from __future__ import annotations
+
+import argparse
+import json
+from pathlib import Path
+from typing import Any
+
+
+def load_json(path: Path) -> dict[str, Any]:
+    if not path.exists():
+        raise FileNotFoundError(path)
+    return json.loads(path.read_text(encoding="utf-8"))
+
+
+def main(argv: list[str] | None = None) -> int:
+    parser = argparse.ArgumentParser(description="Validate WBS-10 dotnet domain parity artifact")
+    parser.add_argument("--artifact", default="Temp/dotnet_domain_parity_v1.json")
+    args = parser.parse_args(argv)
+
+    artifact_path = Path(args.artifact).resolve()
+    payload: dict[str, Any] = {
+        "formula_id": "WBS_10_DOTNET_DOMAIN_PARITY_ARTIFACT_V1",
+        "gate": "FAIL",
+        "missing": [],
+        "evidence": {"artifact": str(artifact_path)},
+    }
+
+    try:
+        data = load_json(artifact_path)
+    except FileNotFoundError:
+        payload["missing"].append("artifact missing")
+        print(json.dumps(payload, ensure_ascii=False, indent=2))
+        return 1
+
+    if data.get("gate") != "PASS":
+        payload["missing"].append("gate")
+    if int(data.get("total", 0)) < 40:
+        payload["missing"].append("total")
+    if data.get("passed") != data.get("total"):
+        payload["missing"].append("passed")
+
+    payload["gate"] = "PASS" if not payload["missing"] else "FAIL"
+    payload["message"] = (
+        "WBS-10 dotnet domain parity artifact validation passed."
+        if payload["gate"] == "PASS"
+        else "WBS-10 dotnet domain parity artifact validation failed."
+    )
+
+    out_path = artifact_path.parent / "wbs_10_dotnet_domain_parity_artifact_v1.json"
+    out_path.write_text(json.dumps(payload, ensure_ascii=False, indent=2), encoding="utf-8")
+    print(json.dumps(payload, ensure_ascii=False, indent=2))
+    return 0 if payload["gate"] == "PASS" else 1
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())