{"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-willowcreekhouse-cmunzonb","versions":[{"created_at":"2026-07-28T06:43:16Z","element_count":134,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"881a5cd99c87be1e4c284cfc6008969a6c62156e3bb3809355391b93e2a5f4bb","version":2},{"created_at":"2026-07-28T06:43:16Z","element_count":134,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}