{"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-swetcdow","versions":[{"created_at":"2026-07-03T06:39:57Z","element_count":73,"note":"5軸GA polish 44->96 by M5 (autonomous)","saved_by":"mcp","sha256":"1725c29e6dbcd27cf4c775ebe6e953239899f6c18224ae5379da9ced1910f1d7","version":3},{"created_at":"2026-07-03T06:32:09Z","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":"c4da226640d94b316bba272b7d35232db223ae510b350b5020f7ff311ed4c6c0","version":2},{"created_at":"2026-07-03T06:32:09Z","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}]}