{"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-0wxu31jy","versions":[{"created_at":"2026-06-11T01:21:58Z","element_count":85,"note":"5軸GA polish 45->98 by M5 (autonomous)","saved_by":"mcp","sha256":"f667989a32ba130398c8e0c16dc0fabba6567076434a6cc1aa29328244ac7846","version":12},{"created_at":"2026-06-10T23:11:30Z","element_count":43,"note":"legacy fix: jpy27760000→quote17252147 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"2f5753fd746852af0d7a739aa4815bb08e14122c2ee0b01e33cf3c3316e459d2","version":3},{"created_at":"2026-06-10T22:55:47Z","element_count":43,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"1282aca6b531d002acda2c3a801816cb9dded4d00d65ab96b54122ae86890a8c","version":2}]}