{"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-puixcfld","versions":[{"created_at":"2026-07-03T06:27:36Z","element_count":83,"note":"5軸GA polish 39->93 by M5 (autonomous)","saved_by":"mcp","sha256":"e946fb77f97ed3352103e6ed539719180a258eac1d7e1fa56cdb448622120adc","version":3},{"created_at":"2026-07-03T06:24:53Z","element_count":85,"note":"loop3: 設計時延床 53.2㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"8fe113240e86c249ed7087288d8278708938220659852e6f5afd391bb67c8b97","version":2},{"created_at":"2026-07-03T06:24:53Z","element_count":85,"note":"言葉から生成: LDK+主寝室+子供室2+浴室+収納","saved_by":"mcp:create","sha256":"","version":1}]}