{"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-thegrovehouse-xdbufkes","versions":[{"created_at":"2026-08-14T15:06:45Z","element_count":82,"note":"loop3: 設計時延床 70.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"6635b4c868b27cff4af0aaab7af27b389e42991a8969320c10dfa3ee7b219ad7","version":2},{"created_at":"2026-08-14T15:06:45Z","element_count":82,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}