{"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-sxz0cyez","versions":[{"created_at":"2026-06-25T19:29:37Z","element_count":84,"note":"5軸GA polish 44->97 by M5 (autonomous)","saved_by":"mcp","sha256":"9d975e676d2f511511266008006b200194521c24d34908df0d1720818ac1b5d4","version":3},{"created_at":"2026-06-25T19:23:15Z","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":"3222f0a8759f1f5d42a504683f6646510a4beea7ae1ea40c1df23e4a60f082cf","version":2},{"created_at":"2026-06-25T19:23:15Z","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}]}