{"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-e26928uy","versions":[{"created_at":"2026-07-02T19:55:06Z","element_count":89,"note":"5軸GA polish 44->95 by M5 (autonomous)","saved_by":"mcp","sha256":"21b43ea339249b595f8f42c2b21c09e376f8223fa418bafb52e353ab675f69d4","version":3},{"created_at":"2026-07-02T19:45:07Z","element_count":119,"note":"loop3: 設計時延床 90.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"8ed33a105a7a5364ccd29f92e1d782967c554e6efe7f61ecf53dcf30d63abc77","version":2},{"created_at":"2026-07-02T19:45:06Z","element_count":119,"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}]}