{"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-d7b05f48","versions":[{"created_at":"2026-07-03T06:03:15Z","element_count":90,"note":"5軸GA polish 43->96 by M5 (autonomous)","saved_by":"mcp","sha256":"a16b5d07825d501622e716ca28adb057d873adc204d66314ae32cf81a48c04aa","version":3},{"created_at":"2026-07-03T05:50:36Z","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":"0be32570a2b2af7043e924357e4a93d9c030d6cbea3e566aa50edb60547b0ff0","version":2},{"created_at":"2026-07-03T05:50:36Z","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}]}