{"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-sb3e593i","versions":[{"created_at":"2026-06-13T17:24:44Z","element_count":84,"note":"5軸GA polish 41->94 by M5 (autonomous)","saved_by":"mcp","sha256":"ebe180d22bb1bd1aa537d17a0e142a456edbd2778438fb4b3ad8354f18d70256","version":3},{"created_at":"2026-06-13T17:12:32Z","element_count":119,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"ad9fa617c04a04b89518aaaaabba5d4b103d6229611774d40be73b461eb79946","version":2},{"created_at":"2026-06-13T17:12:29Z","element_count":119,"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}]}