{"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-muzelaanridgehouse-xcksnmdy","versions":[{"created_at":"2026-07-08T19:41:16Z","element_count":70,"note":"5軸GA polish 47->96 by M5 (autonomous)","saved_by":"mcp","sha256":"332cc9083940a2daea40855334410f1579942bc26e07c1d6f9a492d6ec5f478f","version":3},{"created_at":"2026-07-08T19:37:33Z","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":"f2a0c785db508f415cc14556efba0d73cd4a5d8d703141cc0b55adf7140e2396","version":2},{"created_at":"2026-07-08T19:37:33Z","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}]}