{"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-wmaww7d3","versions":[{"created_at":"2026-06-10T23:39:48Z","element_count":90,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"32861d869b0dbef2a31a6876feda76bb0abd2f72a93554ba8e8304c6e85dd4d6","version":11},{"created_at":"2026-06-10T23:08:43Z","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":"87cf05c7b0a5cd3baeb7c9539af2eb54af1864a873ff10dcddaa0fd81c3da75e","version":7}]}