{"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-swoapaa4","versions":[{"created_at":"2026-06-13T17:24:01Z","element_count":90,"note":"5軸GA polish 47->98 by M5 (autonomous)","saved_by":"mcp","sha256":"b418f3ff01b5f6c3bc55532bafb895afd5a3a314b8ac7ac4303051c74ebfc9da","version":3},{"created_at":"2026-06-13T17:10:07Z","element_count":134,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"e03c71ac1b40991bf06451d13fafb3c162fe7a657b339ab6b604ffd8dfef3a80","version":2},{"created_at":"2026-06-13T17:10:05Z","element_count":134,"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}]}