{"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-be2memjr","versions":[{"created_at":"2026-06-10T22:54:43Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy85444799→quote21693331 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"f97450fc1b6e71a9533467e6e5f323579f163dcf5541a3fddcc50efd0b7b58d1","version":10},{"created_at":"2026-06-10T17:56:34Z","element_count":73,"note":"5軸GA polish 60->97 by M5 (autonomous)","saved_by":"mcp","sha256":"d3d323bbfc0f8f6c706022a3427dcf0bfaa76139d28f97e322bea16f6b6db848","version":3}]}