{"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-2goctfcs","versions":[{"created_at":"2026-06-23T06:08:26Z","element_count":73,"note":"5軸GA polish 45->95 by M5 (autonomous)","saved_by":"mcp","sha256":"22f0b0d75d253c7c37618d6493d390ae0bd1c8cdf3d6dd77a1feb9e7fb85d832","version":3},{"created_at":"2026-06-23T06:01:44Z","element_count":126,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"8c0adbf4fabeb707183c42e25af26ab7b0039e6242d274ca4053af25898f6c47","version":2},{"created_at":"2026-06-23T06:01:44Z","element_count":126,"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}]}