{"note":"bim_versions 導入後の保存のみ記録 (それ以前は bim_canonical 上書きで履歴なし)","ok":true,"slug":"u-house-3a7q4omh","versions":[{"created_at":"2026-06-10T23:06:02Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy70239456→quote22448917 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"273ea66e26e5a11b5db832c7b826e9608d9782377c42cfd1d9924e70abc86a5d","version":9},{"created_at":"2026-06-10T22:35:10Z","element_count":91,"note":"5軸GA polish 56->98 by M5 (autonomous)","saved_by":"mcp","sha256":"9d59ee2e5deda0bfd6e5ba54ee83038b3e29fc36d4e9510cf8e71754c30689e8","version":6}]}