{"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-xepophpt","versions":[{"created_at":"2026-06-13T14:48:44Z","element_count":88,"note":"5軸GA polish 38->93 by M5 (autonomous)","saved_by":"mcp","sha256":"a8b0e25a9475cf8b5369a90a07098ff36b7de1065ac9a7e756cc5dcfd95a6b41","version":3},{"created_at":"2026-06-13T14:40:19Z","element_count":119,"note":"loop3: 設計時延床 65.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"d56f6344a187235b03abd5002ddb50bc829b2b3a3ca09b8fff35df1214d11cb7","version":2},{"created_at":"2026-06-13T14:40:19Z","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}]}