{"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-baazbegv","versions":[{"created_at":"2026-06-23T06:20:14Z","element_count":70,"note":"5軸GA polish 44->93 by M5 (autonomous)","saved_by":"mcp","sha256":"2762992fa891c7dd9d6f0e26f049d8e060948db0e72b77c0b058bfa9e31b82de","version":3},{"created_at":"2026-06-23T06:13:58Z","element_count":101,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"cb1fd5445108fb73e0b009ba441e493a7251b34011a64c4cb0d539e0c9f5feda","version":2},{"created_at":"2026-06-23T06:13:58Z","element_count":101,"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}]}