{"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-dvln1a37","versions":[{"created_at":"2026-06-10T22:51:00Z","element_count":63,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote20933393 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"04dbc6462e2d3fc0d1bcb73779c2d4dcce8e2540a6d6ffc3c999445ec470e183","version":25},{"created_at":"2026-06-10T13:09:34Z","element_count":63,"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":"56ec52f5e9d141ac91e14b5c07283d3e690572cb44b30259c775ead1231872fc","version":11},{"created_at":"2026-06-10T07:59:51Z","element_count":91,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"5d5102f0de1d622cc79560c8a2936f46984621b08820ac3e4a5952cb8eeeb88d","version":2}]}