{"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-dkmzik8w","versions":[{"created_at":"2026-06-13T20:15:00Z","element_count":84,"note":"5軸GA polish 39->93 by M5 (autonomous)","saved_by":"mcp","sha256":"3b05a11fd294b65b1d8791efc5eae645c14f6c33e1d98a4e24d3b5c55ad78865","version":3},{"created_at":"2026-06-13T20:04:37Z","element_count":86,"note":"loop3: 設計時延床 70.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"7df5e380d9e1afa0a00096f1e708c6a111227aef53efc89fec99773ba6572544","version":2},{"created_at":"2026-06-13T20:04:36Z","element_count":86,"note":"言葉から生成: LDK+主寝室+子供室+浴室+収納","saved_by":"mcp:create","sha256":"","version":1}]}