{"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-dqk3qy6e","versions":[{"created_at":"2026-06-14T17:43:25Z","element_count":90,"note":"5軸GA polish 47->98 by M5 (autonomous)","saved_by":"mcp","sha256":"a9b46b053c137bb263cebb5b69ebb1749e9ed43b82f40cea2b68cf9fbeb0f5d2","version":3},{"created_at":"2026-06-14T17:38:21Z","element_count":90,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"0720849f9ac039a9318fd39daff80dfa1b4eda4c74df9c87fbfcb69de58ac175","version":2},{"created_at":"2026-06-14T17:38:21Z","element_count":90,"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}]}