{"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-cunninghamhouse-zehmpbz3","versions":[{"created_at":"2026-07-06T14:50:27Z","element_count":70,"note":"5軸GA polish 41->91 by M5 (autonomous)","saved_by":"mcp","sha256":"ab79f316bf1d2ca0e293116a74b8867aec9b264a908952a2a964f1cf075b1a1b","version":3},{"created_at":"2026-07-06T14:45:51Z","element_count":101,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"f965ba7fda2f1cff88ff4de99f1e0af2a22ab63f219fa6b1eb067f7ec5ab1c03","version":2},{"created_at":"2026-07-06T14:45:50Z","element_count":101,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}