{"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-ardenneslodgehouse-j93z0t37","versions":[{"created_at":"2026-07-28T06:39:52Z","element_count":87,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"633f3567020902d62d69c47e8d6fbd1ae307ee60645f69af5d71d56f4f5effe5","version":2},{"created_at":"2026-07-28T06:39:51Z","element_count":87,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}