{"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-bs82u28x","versions":[{"created_at":"2026-06-10T22:52:48Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy50261601→quote20693313 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"490928de0ae78dcfedd9bf5e18a7ea91af74c4ac79e71e0ff9db3e0477707baf","version":10},{"created_at":"2026-06-10T16:22:50Z","element_count":90,"note":"5軸GA polish 43->93 by M5 (autonomous)","saved_by":"mcp","sha256":"619cc6dccf3b88357f4a0f1106d633947519fc96a3b8f6717414bd36740aa56a","version":2}]}