{"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-pwcvc5nq","versions":[{"created_at":"2026-06-10T22:52:30Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy81784771→quote21131415 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"2deb9cec3a5a75f22daa71d4006d7b013a6dd15af52b0617aefe5343f41f0e72","version":20},{"created_at":"2026-06-10T13:34:28Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積87.5㎡(基礎/屋外/ロフト除外)。設備数量/コスト過大の是正","saved_by":"mcp","sha256":"a9f4a33b982d25e7fecae7ef8813bad9b914200654878870a3e6f9a7e9178e16","version":7},{"created_at":"2026-06-10T12:48:42Z","element_count":84,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"f6f01b52e5bd69651d9d3152633c6bd6c691994d21267f200c77cde56b386857","version":4}]}