{"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-k206xku0","versions":[{"created_at":"2026-06-10T22:50:50Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote18890067 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"118f8803f9a695d8642137483903a2af547d276a7f5b18315b935a270b0555a0","version":25},{"created_at":"2026-06-10T13:09:15Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積74.1㎡(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":"4586314634af48af1b4417fdd8b8c46463a4edb85dc6485214051e718147e5bf","version":11},{"created_at":"2026-06-10T07:42:26Z","element_count":91,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"98728276e0137a7b54565bbfbfef4bc8624da414fee76e4f39ebc2f2fd1ddfc0","version":2}]}