{"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-horspathlodge-h9myd3zo","versions":[{"created_at":"2026-06-27T06:21:59Z","element_count":83,"note":"5軸GA polish 44->98 by M5 (autonomous)","saved_by":"mcp","sha256":"d5b05b7cb02f2d472d77cb09d2d5666493b3c8e6fa71fe24130744ef76bacbc0","version":3},{"created_at":"2026-06-27T06:18:13Z","element_count":105,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"6d3313423248a0d842577db17356dd7bc883b43a9ae527e68a0c4b03d1d21390","version":2},{"created_at":"2026-06-27T06:18:13Z","element_count":105,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}