{"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-rnoc9mu9","versions":[{"created_at":"2026-06-10T22:52:23Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy68009927→quote21655660 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"4a32a73fe5623da665a506c8e09481cc38868b9c263d384455b646d763f7849a","version":23},{"created_at":"2026-06-10T13:29:16Z","element_count":66,"note":"backfill: 延床=居室床スラブ実面積93.9㎡(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":"91056fdad4dc7310b20e3d2b2a2ba5cc6b238e47de6e2923b64f9ca37a715e44","version":9},{"created_at":"2026-06-10T11:26:46Z","element_count":83,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"7e1dd0530222acc28539966922977c97b484d74776b18ac9e2fa9ed4cd1db81f","version":3}]}