{"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-mtoyx4wt","versions":[{"created_at":"2026-06-10T23:39:42Z","element_count":90,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"32861d869b0dbef2a31a6876feda76bb0abd2f72a93554ba8e8304c6e85dd4d6","version":11},{"created_at":"2026-06-10T23:09:11Z","element_count":54,"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":"a2b5b27c96978e03931e88df5eab034dbab1dccdd738a0329f883404e6c0bbbb","version":7}]}