{"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-8780vvk3","versions":[{"created_at":"2026-06-10T22:51:12Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote19731809 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"68a30b5a747b0bfec1fc8da8fe71a45cec1308825aec104e059c56d8677d8e93","version":25},{"created_at":"2026-06-10T13:09:38Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積77.3㎡(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":"0e8aab3e69ffe9769b598f560f947e64919c117451c9d1fc645b16b7fe01b72d","version":11},{"created_at":"2026-06-10T07:59:31Z","element_count":89,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"2680df062bf4e4e3f3887e2c123e35312f4e17d1495485bedd04e82dfab30d46","version":2}]}