{"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-h5vhd9q4","versions":[{"created_at":"2026-06-10T22:52:06Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy68009927→quote20631425 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"df8d29bd36a90c5f2b39e24bdfb19ee43c24d968434736bbdd0a3e0eba407762","version":26},{"created_at":"2026-06-10T13:10:16Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積81.7㎡(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":"69c855550dc4f95c45cb4db404c8fc5e9985359113267fd75e07329629c229e4","version":11},{"created_at":"2026-06-10T07:59:44Z","element_count":84,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"95570746f1b49cfc180f127e37daed4e1702100474d337a3c3adbf9c41d337c8","version":2}]}