{"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-x0yjoxhe","versions":[{"created_at":"2026-06-10T22:53:07Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote24058999 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"52d2ca228d74844a71fc03aaa4ea260e9cac911ff130c3dadde16a005e15dfad","version":11},{"created_at":"2026-06-10T22:01:20Z","element_count":58,"note":"revert: houki rescan NG -> restore pre-polish elements (M5 2026-06-11)","saved_by":"mcp","sha256":"c911f74df151f5182817cd9f8a4484914d53e77e896c2705e62531e8d734fb0f","version":5},{"created_at":"2026-06-10T16:39:26Z","element_count":90,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"30acbf33cab7e06ebf331c3a99d4bb1f2a7171ab1c4d0cc89165225517a33b78","version":2}]}