{"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-6rppy2fr","versions":[{"created_at":"2026-06-10T22:52:33Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote21128855 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"28d7877ef9ca24c454695bae886506da62801121c458dd861970a2d51f86069b","version":20},{"created_at":"2026-06-10T13:44:06Z","element_count":66,"note":"backfill: 延床=居室床スラブ実面積90.0㎡(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":"2aa3c39012e4d4c783c8bb3da40aca37434360bcf9b52aa606dc97f0143e54bf","version":7},{"created_at":"2026-06-10T13:06:12Z","element_count":91,"note":"5軸GA polish 56->98 by M5 (autonomous)","saved_by":"mcp","sha256":"52e3e716f0103fc322a1cc12f140f88322f3cd2ba6b0a63e4bb14fe128447aed","version":4}]}