{"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-lfyf06b7","versions":[{"created_at":"2026-07-02T19:55:06Z","element_count":68,"note":"5軸GA polish 44->93 by M5 (autonomous)","saved_by":"mcp","sha256":"a8b5011b53816a4364617d88a7722cdb3ee823fcf4d9c0b326fd5949b064c8dd","version":3},{"created_at":"2026-07-02T19:43:15Z","element_count":119,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"a2e42d41d9fee06084e952a11f8677ad75fda47df779285cb3cfd026728e0ae9","version":2},{"created_at":"2026-07-02T19:43:15Z","element_count":119,"note":"言葉から生成: LDK+主寝室+子供室2+浴室+収納","saved_by":"mcp:create","sha256":"","version":1}]}