{"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-890wnsao","versions":[{"created_at":"2026-06-10T22:39:39Z","element_count":77,"note":"legacy fix experiment-c2: 旧バグ時代の保存値85444799をmaterial_quote(BOM税込合計)22697879に是正","saved_by":"mcp","sha256":"a78132929fe034eb409868702b1149a279247ecf9bd3216c57037a5c247ea8c8","version":26},{"created_at":"2026-06-10T22:39:23Z","element_count":77,"note":"legacy fix experiment-c1: gross同値再set→construction_jpy再計算確認","saved_by":"mcp","sha256":"6ef6f18832034538a129392e6a13aa0b2b2df14cf6aa3ac677054ded0559c187","version":25},{"created_at":"2026-06-10T22:38:47Z","element_count":77,"note":"legacy fix experiment-b: roomsから設備語(太陽光発電/雨水タンク/薪ストーブ/天窓/大開口/越屋根)を除去","saved_by":"mcp","sha256":"df6ec3f84e8ab7248187308262aaefd771a87cbf004967bbe19a31ad655ebd60","version":24},{"created_at":"2026-06-10T22:38:22Z","element_count":77,"note":"legacy fix experiment-a: 木造平屋なのにfloors=2を1に是正 (旧世代データ是正・可逆: before=2)","saved_by":"mcp","sha256":"ed1b85f27d3fa0815e279ae60ca7bdf19438d27ee39b40b4b5aa094a40987488","version":23},{"created_at":"2026-06-10T13:19:02Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積97.8㎡(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":"1021aed4b61463fa707c8b45b93ce8cc913d2a35615ea53c82e64faab43717a8","version":10},{"created_at":"2026-06-10T10:09:05Z","element_count":73,"note":"5軸GA polish 61->97 by M5 (autonomous)","saved_by":"mcp","sha256":"30234a1eee2792e4b3d2e74f6b9bafdd827f3381b7c4da99e5624ff6255d4498","version":2}]}