{"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-3uapqrbc","versions":[{"created_at":"2026-06-10T23:05:58Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy87413760→quote22495754 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"91b1f83b1e8b896ed22b0b345856b5ae4ac9e40d28aa6acdb778b1159188c76f","version":9},{"created_at":"2026-06-10T22:17:22Z","element_count":68,"note":"5軸GA polish 61->95 by M5 (autonomous)","saved_by":"mcp","sha256":"f0f0e7254ba1cb41296485a4a3e601a51a0b2561673ae641974b15372b087ff2","version":4}]}