{"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-9xbgao28","versions":[{"created_at":"2026-06-10T22:52:02Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy68009927→quote24745754 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"8708c0c462d6057c41a9ad820eb965870468f244e0c7111778c60b85f6b4066e","version":26},{"created_at":"2026-06-10T13:10:58Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積103.4㎡(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":"9278b4103a7f3b40c9ae3149e62c1ffd12ad70cd9db2d1fff6308a4368b56a25","version":11},{"created_at":"2026-06-10T08:15:13Z","element_count":85,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"89827ecb65c61b945d4a8b1a810f8ffb1b0ae5428a7ed23251b2726619e2c987","version":2}]}