{"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-x9aunwrw","versions":[{"created_at":"2026-06-10T22:50:51Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy75041820→quote24422872 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"ce76cd0c78f91bcfa13c7cf597224a64f147e55917925c5f16924acdf727e0f3","version":25},{"created_at":"2026-06-10T13:09:19Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積103.4㎡(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":"49d31939f6559776e517590610b85dd579b032a88d2d350993061212397719fd","version":11},{"created_at":"2026-06-10T07:59:43Z","element_count":89,"note":"5軸GA polish 56->98 by M5 (autonomous)","saved_by":"mcp","sha256":"0f5c631d4d59e9a595c6448086193326251c9f255ebc604fdbf4d9444c5da285","version":2}]}