{"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-ktdp6raz","versions":[{"created_at":"2026-07-13T10:37:34Z","element_count":91,"note":"5軸GA polish 42->95 by M5 (autonomous)","saved_by":"mcp","sha256":"c7250a4707aac1a8ffa304fafe5d6dd3894a8f1b7c48c3a9930585b8dcd0c80b","version":3},{"created_at":"2026-07-13T10:27:14Z","element_count":119,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"884f4c8c5cef47c1cae576d2b07dd02d3c1340c6434c2025b783fa6de5465d43","version":2},{"created_at":"2026-07-13T10:27:14Z","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}]}