{"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-levubicr","versions":[{"created_at":"2026-06-30T06:32:18Z","element_count":84,"note":"5軸GA polish 45->95 by M5 (autonomous)","saved_by":"mcp","sha256":"e2cd248439b330379b964e416434f39dfa20c49f383f504296d71e097db28a11","version":3},{"created_at":"2026-06-30T06:22:13Z","element_count":83,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"c6bedf43b50086ba56f4a0aeacfe8184732de3cd3b41151126d3241ff9a0e200","version":2},{"created_at":"2026-06-30T06:22:13Z","element_count":83,"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}]}