{"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-nleyede6","versions":[{"created_at":"2026-06-13T16:04:07Z","element_count":82,"note":"5軸GA polish 39->93 by M5 (autonomous)","saved_by":"mcp","sha256":"e7aff8e573c66f113fb055bae8e84fb0a63d357d9ebb35e8cac21c423f67460a","version":3},{"created_at":"2026-06-13T15:56:54Z","element_count":119,"note":"loop3: 設計時延床 80.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"48d28356006c7f839138a3e50459e75af2e87e41755c3691cd03b7e5a6253ced","version":2},{"created_at":"2026-06-13T15:56:51Z","element_count":119,"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}]}