{"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-1uym9639","versions":[{"created_at":"2026-06-10T22:50:07Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72816480→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":"7145b7fdd1568a8819ab9ab422f77d8e118ae4f7e3716f035df070fe2a1a130c","version":25},{"created_at":"2026-06-10T13:08:19Z","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":11},{"created_at":"2026-06-10T07:42:29Z","element_count":85,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"819c7c20c0ddca86034f39041e423846d8b459b468f36d3d2d96d57447fc12bb","version":2}]}