{"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-wyhsqvhm","versions":[{"created_at":"2026-06-13T20:46:24Z","element_count":84,"note":"5軸GA polish 43->96 by M5 (autonomous)","saved_by":"mcp","sha256":"14b7b7afa454a3b9aa5ea7e62bccbe6a6ef3594817f09672ad33e22cc05d4e01","version":3},{"created_at":"2026-06-13T20:31:11Z","element_count":88,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"2b22f89882404b5b5a880dfa05aee4b58d34bd80e6a38ce7ecdf790342da4201","version":2},{"created_at":"2026-06-13T20:31:09Z","element_count":88,"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}]}