{"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-stmaryshouse-kjcuj9xc","versions":[{"created_at":"2026-06-10T13:22:20Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積81.4㎡(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":"ff2a49e0317cef56e20a2842c92724ea3d962725d7b54dd56e2bc3bff3865bf3","version":10},{"created_at":"2026-06-10T10:23:35Z","element_count":85,"note":"5軸GA polish 43->98 by M5 (autonomous)","saved_by":"mcp","sha256":"819d1d7bfb5682502de7b175f1d226d4af34a0e6f7e7f3f2cc569f34e87b83e3","version":2}]}