{"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-morrisedgebungalowho-d8a56svd","versions":[{"created_at":"2026-07-13T10:49:13Z","element_count":72,"note":"5軸GA polish 44->96 by M5 (autonomous)","saved_by":"mcp","sha256":"606a275a080971f7418defe57c53d3b94347f8189aa826f6913d83eb81f88fd6","version":3},{"created_at":"2026-07-13T10:37:04Z","element_count":105,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"b533824e97d02cdd3be619d76bda7a734d4c4c8d3d38b77493aa32cdc5203211","version":2},{"created_at":"2026-07-13T10:37:03Z","element_count":105,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}