{"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-zlk56soh","versions":[{"created_at":"2026-06-10T22:49:59Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy75041820→quote23542105 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"72e27ef21f4548c814af3357d45be264acfd480da20462dbebfe15c17b6fe3c4","version":25},{"created_at":"2026-06-10T13:07:53Z","element_count":66,"note":"backfill: 延床=居室床スラブ実面積106.2㎡(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":"9956ab9bfb46737e61a8f9c34040b8d53bc42b3d4afb0c1bd2318f2c0c86da51","version":11},{"created_at":"2026-06-10T07:25:27Z","element_count":89,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"2375e211d912d6f2eb192a5f47260cce3fbf4a5dc4892b7f6056bb70f3d8e4d8","version":2}]}