{"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-xuxa2kti","versions":[{"created_at":"2026-06-10T22:52:09Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote19531381 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"ee989f476a2e5343f33fb8212bc41888a430862e4205a0dc6333062c0d7792c5","version":25},{"created_at":"2026-06-10T13:14:41Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積77.0㎡(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":"22afab92bdfc9941edbea7a460314cfa1a1bf6f3ce85556c5848180c19ac37ed","version":10},{"created_at":"2026-06-10T09:21:25Z","element_count":73,"note":"5軸GA polish 60->97 by M5 (autonomous)","saved_by":"mcp","sha256":"496c4fb3110c3ac75a87eaa6f31313975e923928895858f2ec258f9aadc3a6b0","version":2}]}