{"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-willowbrookhouse-idgebcoj","versions":[{"created_at":"2026-07-01T06:56:33Z","element_count":72,"note":"5軸GA polish 38->90 by M5 (autonomous)","saved_by":"mcp","sha256":"9c8eca1b6486dcbd69775ab13a79b8d68e5e38589a1f9efdc002f90a3eff6396","version":3},{"created_at":"2026-07-01T06:48:20Z","element_count":86,"note":"loop3: 設計時延床 55.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"97bd4f5b66121ad9a2c4a3b2d1c1da2603ddf7ba77cb9ef61b454b8363e4bb20","version":2},{"created_at":"2026-07-01T06:48:20Z","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}]}