{"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-bermondseyheightshou-esls7efo","versions":[{"created_at":"2026-06-24T14:55:53Z","element_count":60,"note":"5軸GA polish 38->85 by M5 (autonomous)","saved_by":"mcp","sha256":"a8be660cc965c979fd49e4c74983d6ccfae058ad4128e5ecc13cc8e4586a5ae4","version":3},{"created_at":"2026-06-24T14:48:13Z","element_count":83,"note":"loop3: 設計時延床 48.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"5cd49704a9a7b84ae26125aaa9465d769428b0b5626fae0381fc27922fdf8b9d","version":2},{"created_at":"2026-06-24T14:48:13Z","element_count":83,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}