{"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-jaary0el","versions":[{"created_at":"2026-06-10T13:12:55Z","element_count":66,"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":"ddbf01fdf1f40b4437032ebbb43e6c806a510f9653f35061a009deb8f12e026b","version":11},{"created_at":"2026-06-10T08:48:52Z","element_count":70,"note":"5軸GA polish 61->96 by M5 (autonomous)","saved_by":"mcp","sha256":"cc5e778f87ca3639568d378bbf30074b70175d67751e024e9803d7aa4b2f4353","version":3}]}