{"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-av7l6acu","versions":[{"created_at":"2026-06-28T06:11:59Z","element_count":73,"note":"5軸GA polish 41->92 by M5 (autonomous)","saved_by":"mcp","sha256":"e803aaf6293e6cd34c601082af0356165e80640b66ed121ee562569b73f81bf6","version":3},{"created_at":"2026-06-28T06:08:33Z","element_count":82,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"64bbc48e789242cab4a156a591f6fc433ab2d3af5ecbfebabc3bc89db0e96337","version":2},{"created_at":"2026-06-28T06:08:33Z","element_count":82,"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}]}