{"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-ofxtxril","versions":[{"created_at":"2026-06-19T06:16:47Z","element_count":89,"note":"5軸GA polish 42->95 by M5 (autonomous)","saved_by":"mcp","sha256":"a00c0ff8f22af9e65d27f81d90bb6c41255faf464854a15e31cbbc3bd612849c","version":3},{"created_at":"2026-06-19T06:00:07Z","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":"5f68e3ddeb4a8a45f6eeeb8e15ce6c181e49e1a4adca9d9d57d396f9da598e2c","version":2},{"created_at":"2026-06-19T06:00:06Z","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}]}