{"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-yeadonrearbungalow-ss4ezsdk","versions":[{"created_at":"2026-06-10T13:22:39Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積77.3㎡(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":"fda8e0844e872ee07a1763d9bb656605fd2752f99a1b6786c582806b2ca1ef71","version":10},{"created_at":"2026-06-10T10:23:29Z","element_count":72,"note":"5軸GA polish 43->96 by M5 (autonomous)","saved_by":"mcp","sha256":"2e2572baf319cb11ed128de5eef3af2678d34c59ac7b1d1ee3d01eafc89d35d3","version":2}]}