{"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-xrnsenyd","versions":[{"created_at":"2026-06-19T06:16:56Z","element_count":84,"note":"5軸GA polish 44->98 by M5 (autonomous)","saved_by":"mcp","sha256":"78b27572d0186aac5179892420a96f9279f1cceb18baf36424bbd534285d4b8c","version":3},{"created_at":"2026-06-19T06:00:43Z","element_count":105,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"605a51bdfc8fd08ff95b3028e9a6f9a9bc9baa6e41a578ffba61f5de6654ceec","version":2},{"created_at":"2026-06-19T06:00:43Z","element_count":105,"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}]}