{"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-ahtgry28","versions":[{"created_at":"2026-06-10T22:52:24Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy70239456→quote21021361 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"83bb5f2af902b96762d2f3d1efbeadb5ea728d838678052315cd32356731fe65","version":23},{"created_at":"2026-06-10T13:29:54Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積87.5㎡(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":"95a1e2c84e50b5990ad519a19fb2b95cbc3ce04325da63e92b01ffe26a830e73","version":9},{"created_at":"2026-06-10T11:43:33Z","element_count":91,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"dc7aeeda49add578e9d76fe5e5b36ccb6559803bd5915fa58e6479e70e6dae3a","version":4}]}