{"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-dmmkxawm","versions":[{"created_at":"2026-06-10T23:06:50Z","element_count":73,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy80278800→quote25688882 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"5a97896ce2df588a9a349ce1544d41a7fe8d4a0e5331421a4988cb5bbac3367e","version":9},{"created_at":"2026-06-10T22:52:02Z","element_count":73,"note":"5軸GA polish 54->96 by M5 (autonomous)","saved_by":"mcp","sha256":"dd8686b9cb7eb8916b00735db2de2b91a6bdf7d7d3626dcf1d86ceea80b46e1b","version":8}]}