{"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-kingfisheredgehouse-32ls1lq0","versions":[{"created_at":"2026-06-10T13:21:51Z","element_count":66,"note":"backfill: 延床=居室床スラブ実面積118.8㎡(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":"8ccefe80f44b2d592682116790b1d4e4317168e25b3e30ee996d2355f1d74376","version":10},{"created_at":"2026-06-10T10:23:27Z","element_count":73,"note":"5軸GA polish 43->96 by M5 (autonomous)","saved_by":"mcp","sha256":"dc3d72d1782e2d1c73375b49c9e139101afabd483c12b66a3086e0d44396af2f","version":2}]}