{"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-pdczpoju","versions":[{"created_at":"2026-06-13T20:00:26Z","element_count":85,"note":"5軸GA polish 44->95 by M5 (autonomous)","saved_by":"mcp","sha256":"8039b58abcb2075f85c8d43cc5861e8c01a8fc6eb5beacddd90e4306bc310a1d","version":3},{"created_at":"2026-06-13T19:42:23Z","element_count":101,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"0746f1408ae020565c887c4c84bd99d3fd8d1dd7e52d9b0824817e5db5ccda1c","version":2},{"created_at":"2026-06-13T19:42:19Z","element_count":101,"note":"言葉から生成: LDK+主寝室+子供室+浴室+収納","saved_by":"mcp:create","sha256":"","version":1}]}