{"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-8imdpgvi","versions":[{"created_at":"2026-06-10T22:52:13Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy87379776→quote21131415 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"28a4c0719ba0ea70946794474c450e5877edf55bbe739e59c91d650174c70577","version":25},{"created_at":"2026-06-10T13:17:56Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積87.5㎡(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":"a9f4a33b982d25e7fecae7ef8813bad9b914200654878870a3e6f9a7e9178e16","version":10},{"created_at":"2026-06-10T09:54:29Z","element_count":84,"note":"5軸GA polish 52->98 by M5 (autonomous)","saved_by":"mcp","sha256":"8ae47606872e263185c36f57892854fd71999b7a5ae867c48c168d5f6b106618","version":2}]}