{"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-eastmanlodgehouse-sf4qpz2r","versions":[{"created_at":"2026-07-01T10:50:16Z","element_count":82,"note":"5軸GA polish 39->93 by M5 (autonomous)","saved_by":"mcp","sha256":"7919a561c57f813e814491820af3ea367047ea515fc834a89340f11a764b25da","version":3},{"created_at":"2026-07-01T10:45:23Z","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":"f317a88d9185f5871520c6df40ad9cdb0d45d6ac7bf891d11ad9f6dfbc43c7f9","version":2},{"created_at":"2026-07-01T10:45:23Z","element_count":86,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}