{"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-sl0cyrfv","versions":[{"created_at":"2026-06-10T22:50:41Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy70091322→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":"e338b2df21e6ac8b204c425674e33a0af5e3432372cf28e0660b2e81ddbc10cb","version":25},{"created_at":"2026-06-10T13:09:03Z","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":"2026-06-10T07:42:23Z","element_count":90,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"52d486834347c9f7e1826ec60b613d075b74a8182680a320098d823500bad38b","version":2}]}