{"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-5ryr3qic","versions":[{"created_at":"2026-06-15T06:08:54Z","element_count":68,"note":"5軸GA polish 43->94 by M5 (autonomous)","saved_by":"mcp","sha256":"a6c4c6f74544ab762c7681c90dec164341b2f7c5e5c25f07fc171aac4f73524f","version":3},{"created_at":"2026-06-15T06:02:47Z","element_count":85,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"d2588d2b67a49ba8aedbb39161f3f93d9f325dfa3660e3f2111acd2ae7860c52","version":2},{"created_at":"2026-06-15T06:02:47Z","element_count":85,"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}]}