{"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-r0c6vqek","versions":[{"created_at":"2026-06-10T22:52:06Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy70239456→quote22514261 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"bfde3366f878f4a3327e4df0d2a2009da965d40299739ee4cef685a150271b19","version":26},{"created_at":"2026-06-10T13:12:42Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積92.5㎡(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":"4907649b8e71ca54c88c8a0671cc1c13cf6bd00a104bc417833cccafd52187e1","version":11},{"created_at":"2026-06-10T08:48:36Z","element_count":89,"note":"5軸GA polish 59->98 by M5 (autonomous)","saved_by":"mcp","sha256":"1cb0bedb65436d44389e48a5707b944f12c31c1319ad49ecf68e8b3e4f5b823c","version":3}]}