{"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-cuddesdonwillowhouse-rzc81uzh","versions":[{"created_at":"2026-06-10T22:52:02Z","element_count":77,"note":"legacy fix: jpy84109586→quote21021361 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"61d7120c37eaf9f435ab2bc28413f42f365b5d0e8f8ddf215422ae613e707c73","version":26},{"created_at":"2026-06-10T13:11:08Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積87.5㎡(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":"95a1e2c84e50b5990ad519a19fb2b95cbc3ce04325da63e92b01ffe26a830e73","version":11},{"created_at":"2026-06-10T08:15:38Z","element_count":90,"note":"5軸GA polish 43->98 by M5 (autonomous)","saved_by":"mcp","sha256":"0de1d499986c2910c7a45536fd6e2dc5846a093bdacff7beeb4eac3e15ce0ba2","version":2}]}