{"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-2algyq3s","versions":[{"created_at":"2026-06-10T22:52:01Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy81611913→quote21268722 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"a216dc21fca2a6d5159fcb45d5ab3b089c52e803f644c397aa12c4ec5a70541f","version":26},{"created_at":"2026-06-10T13:10:20Z","element_count":66,"note":"backfill: 延床=居室床スラブ実面積93.9㎡(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":"2f2d6b0581644daf60ba5a3bd2fc2fcd6ac43e82f8c64047e02533f602190b13","version":11},{"created_at":"2026-06-10T08:15:20Z","element_count":83,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"39625b8f62f6a4ad31dadee8b44d56dde29890d2fd22bcdb3fbbea18999c8864","version":2}]}