{"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-zewegurk","versions":[{"created_at":"2026-07-18T19:38:30Z","element_count":90,"note":"5軸GA polish 43->96 by M5 (autonomous)","saved_by":"mcp","sha256":"cb3576cfb050db972a3978d81667601667dd255c0b50d9a1aec73e451532625b","version":3},{"created_at":"2026-07-18T19:31:18Z","element_count":105,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"560bd51545b4ba40aecf1f6d84a63125dd67d98471d20fa289d8485b0dc2ff72","version":2},{"created_at":"2026-07-18T19:31:18Z","element_count":105,"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}]}