{"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-5tfyxtta","versions":[{"created_at":"2026-06-13T17:09:16Z","element_count":84,"note":"5軸GA polish 41->94 by M5 (autonomous)","saved_by":"mcp","sha256":"0a78b3382147af2dcff76a613e4244049ee4f8bdb9281c337316fa37b389abc3","version":3},{"created_at":"2026-06-13T16:53:16Z","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":"ab7764a85495aeb3581c408ca4bbd9ab00edaefe2cfc823205d251a375a8aa99","version":2},{"created_at":"2026-06-13T16:53:12Z","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}]}