{"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-tj9scyt9","versions":[{"created_at":"2026-06-30T19:50:47Z","element_count":91,"note":"5軸GA polish 41->94 by M5 (autonomous)","saved_by":"mcp","sha256":"608d54baf42a5dde4e7a73576c550e11d6246df4dab06881705901d12a22431d","version":3},{"created_at":"2026-06-30T19:37:49Z","element_count":101,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"441ed37dfebf686eb28ca6ed16bf8e6849ec484c63293b2feab4c9fb5867a03e","version":2},{"created_at":"2026-06-30T19:37:49Z","element_count":101,"note":"言葉から生成: LDK+主寝室+子供室+浴室+収納","saved_by":"mcp:create","sha256":"","version":1}]}