{"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-suptnwwe","versions":[{"created_at":"2026-06-10T13:29:26Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積77.0㎡(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":"157dc205a170e584d5e493420dc8772795e056267a0655a850828ad676647de6","version":9},{"created_at":"2026-06-10T11:44:09Z","element_count":90,"note":"5軸GA polish 55->98 by M5 (autonomous)","saved_by":"mcp","sha256":"d283c0ed60aff295d75eb931dd2be2e04a4fc1a66b30928afa4c35b9f00fb60e","version":4}]}