{"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-5m0qtehg","versions":[{"created_at":"2026-06-10T22:52:12Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy96143039→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":"2d236c6669127eefde1e3e9040ca360462921be02d3557ff4a0a1ac89d79f9fe","version":25},{"created_at":"2026-06-10T13:16:14Z","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":10},{"created_at":"2026-06-10T09:37:58Z","element_count":71,"note":"5軸GA polish 61->96 by M5 (autonomous)","saved_by":"mcp","sha256":"5350d4fcba67f8c3b4786213fe827d6adb3102a49b6a1b69a8249d6497ba0c49","version":2}]}