{"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-ilseill1","versions":[{"created_at":"2026-06-13T15:51:03Z","element_count":71,"note":"5軸GA polish 45->94 by M5 (autonomous)","saved_by":"mcp","sha256":"c0cf4c0b1734266c22774abfaf6ff23bb9e8f15d58699e721bde1bc9b0758558","version":3},{"created_at":"2026-06-13T15:41:38Z","element_count":126,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"7ab9947be7e05cc7fb3bff42c8d54c1c68f5dd6e45ce628f7ad716ea1e24d02a","version":2},{"created_at":"2026-06-13T15:41:37Z","element_count":126,"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}]}