{"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-r38tribn","versions":[{"created_at":"2026-06-10T22:53:04Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote21425095 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"2ad279a5edc1f56477f9abad902e2f1ab48847ba304c0b890babf2f480307a1d","version":10},{"created_at":"2026-06-10T16:40:25Z","element_count":72,"note":"5軸GA polish 54->96 by M5 (autonomous)","saved_by":"mcp","sha256":"2fe4d53be62a5fc72551cb0adf3e9e1de24f681255aab7f0ac917ba8d060fe0e","version":2}]}