{"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-eun5xmag","versions":[{"created_at":"2026-07-03T19:41:49Z","element_count":72,"note":"5軸GA polish 38->90 by M5 (autonomous)","saved_by":"mcp","sha256":"687b2e90f901983cc564c7290388a14961ab72b50f50fe8f33cfa7ffe7ba12ee","version":3},{"created_at":"2026-07-03T19:32:13Z","element_count":101,"note":"loop3: 設計時延床 45.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"e17e25abc913ffd4dd2a52207b4433fd2017b1d844e438ab2c4cc64ac9e6f91a","version":2},{"created_at":"2026-07-03T19:32:13Z","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}]}