{"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-lindengrovehouse-twhhuo9n","versions":[{"created_at":"2026-08-03T19:14:26Z","element_count":107,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"7e19dba936f565906bf62aa977713869eefc5cb98e5f7d218af6e700a1799dc2","version":2},{"created_at":"2026-08-03T19:14:25Z","element_count":107,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}