{"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-typydfge","versions":[{"created_at":"2026-06-30T14:11:33Z","element_count":88,"note":"5軸GA polish 38->92 by M5 (autonomous)","saved_by":"mcp","sha256":"86f4ae7899da3263b2910b05a75be16d26f42311e6d16856f85d59784e3fb70d","version":3},{"created_at":"2026-06-30T14:08:23Z","element_count":83,"note":"loop3: 設計時延床 55.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"57f6653c2138526989a88638313e33a905ca562073d1b752021f215fef907413","version":2},{"created_at":"2026-06-30T14:08:22Z","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}]}