{"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-xkojxrir","versions":[{"created_at":"2026-06-10T23:06:52Z","element_count":71,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote27242312 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"1d3e9f264d508c133f180f1258fb3a616887740c1161d8cec947ee3eeee0ed71","version":9},{"created_at":"2026-06-10T22:52:02Z","element_count":71,"note":"5軸GA polish 61->96 by M5 (autonomous)","saved_by":"mcp","sha256":"7590159d1cb98bfc8ed9949cae952989e8719be508db869574252840fcc24694","version":8}]}