{"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-zus3r753","versions":[{"created_at":"2026-06-10T22:49:57Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72816480→quote20303104 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"7061adaa91f9af607504f2a43f13fd1fa22d376623b3a0e2b231e0d502b9cc36","version":25},{"created_at":"2026-06-10T13:08:07Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積78.3㎡(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":"86e0c22dab5d3f123b683f21a1fe085a4f1558711b30dd74fc06adea7fbb4809","version":11},{"created_at":"2026-06-10T07:25:33Z","element_count":85,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"819c7c20c0ddca86034f39041e423846d8b459b468f36d3d2d96d57447fc12bb","version":2}]}