{"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-ifusuva7","versions":[{"created_at":"2026-06-10T22:57:18Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy60335760→quote19615588 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"898471e5c2fe71bb422367a1c343f56376823e7ff67ec0d9b66df9fd22920e02","version":9},{"created_at":"2026-06-10T19:18:57Z","element_count":74,"note":"5軸GA polish 60->94 by M5 (autonomous)","saved_by":"mcp","sha256":"13c32300d49725c4855441e5e1f099ecfb12be923d61b917c57a94aeb72f1e4a","version":2}]}