{"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-9yi9iox4","versions":[{"created_at":"2026-06-10T23:06:53Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy84287347→quote21306726 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"9599fbe4008030dfc51dcf821d6d8f829ed876b1e4a1127a5275668a0517b735","version":9},{"created_at":"2026-06-10T22:50:54Z","element_count":91,"note":"5軸GA polish 61->97 by M5 (autonomous)","saved_by":"mcp","sha256":"410fcd0272b3917e741cdfc38a46abefa478f6c72f2bcb4d4415c6e95927d2ab","version":7}]}