{"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-dp6rn4te","versions":[{"created_at":"2026-06-10T22:50:33Z","element_count":62,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote21115024 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"53ba5c3007cf5adb6c6296e8dacefef3fef2defb7655c0400afbbd33baf673e8","version":25},{"created_at":"2026-06-10T13:08:37Z","element_count":62,"note":"backfill: 延床=居室床スラブ実面積93.5㎡(基礎/屋外/ロフト除外)。設備数量/コスト過大の是正","saved_by":"mcp","sha256":"db733ad08426fcb20f3d3a3a9be466cbc6cd13489966703d74feeaf47a05ed7b","version":11},{"created_at":"2026-06-10T07:42:19Z","element_count":89,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"2680df062bf4e4e3f3887e2c123e35312f4e17d1495485bedd04e82dfab30d46","version":2}]}