{"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-uilya8fo","versions":[{"created_at":"2026-06-19T06:17:14Z","element_count":89,"note":"5軸GA polish 42->95 by M5 (autonomous)","saved_by":"mcp","sha256":"c313a40df4653bc78a3475f780a8fa7f4ce59e6915ef03607852836a5cbbcbc4","version":3},{"created_at":"2026-06-19T06:01:16Z","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":"32635c95bea9b0f9883d534904a0912d198bf8e4751801493b7bc459e291c687","version":2},{"created_at":"2026-06-19T06:01:15Z","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}]}