{"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-leavesbrookhouse-x9l1iqyp","versions":[{"created_at":"2026-07-13T11:24:50Z","element_count":83,"note":"5軸GA polish 44->98 by M5 (autonomous)","saved_by":"mcp","sha256":"2cebdd09d8ae4623d557b8be3b87a7a4880e0e250c8854e49062eea063fbde94","version":3},{"created_at":"2026-07-13T11:19:55Z","element_count":86,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"222aa80e4ff29395072b10c3ffbcbb97699c3a0bc526c4c7e5673d02bd82d5d9","version":2},{"created_at":"2026-07-13T11:19:55Z","element_count":86,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}