{"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-rbbje35z","versions":[{"created_at":"2026-06-10T23:06:02Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy68153976→quote23031340 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"d2d4c2dd89a1fe6b2dcb9a31fbc70eb8a1b925e98891c300b4b2d5973a6ddd5d","version":9},{"created_at":"2026-06-10T22:34:46Z","element_count":84,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"5bd3747f7436cf613b9af104535355e85d5c149a1e4aaee2994423abc30b3627","version":6}]}