{"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-qmzcn1nb","versions":[{"created_at":"2026-06-13T17:38:36Z","element_count":82,"note":"5軸GA polish 41->94 by M5 (autonomous)","saved_by":"mcp","sha256":"d7322894b209f932df1d30197149339aa4e0cd4b43ebc755e14a7e3bbdb17d89","version":3},{"created_at":"2026-06-13T17:20:54Z","element_count":101,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"8f0203e3699794e9fec64f1f6f09fc005e0696a2a5ac8f6a225580e32a7ed4c9","version":2},{"created_at":"2026-06-13T17:20:49Z","element_count":101,"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}]}