{"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-house-3slj1uoa","versions":[{"created_at":"2026-06-10T23:58:02Z","element_count":84,"note":"5軸GA polish 54->97 by M5 (autonomous)","saved_by":"mcp","sha256":"2280ce6e200c6753a0e8f7716dfbbb8714aa70d0c1e4e6628a70c926f0122ed6","version":13},{"created_at":"2026-06-10T23:09:29Z","element_count":47,"note":"legacy fix: rooms設備語除去 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"2042be4ea34b0f81d19276232de3fdc7cd731886d40925bcc9c3010bf24338a0","version":7}]}