{"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-09jqwydd","versions":[{"created_at":"2026-06-29T19:38:19Z","element_count":88,"note":"5軸GA polish 39->93 by M5 (autonomous)","saved_by":"mcp","sha256":"caa970369c72c9d82bdafcb92d7e5b89099cc9b4a8b6cca1b0fc4d15bb4b972b","version":3},{"created_at":"2026-06-29T19:28:16Z","element_count":101,"note":"loop3: 設計時延床 70.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"4d860b3f4e686e88cd447231cd0a78c8e8916c0e9e94427b45dda2dc597f8247","version":2},{"created_at":"2026-06-29T19:28:16Z","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}]}