{"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-crowfieldhouse-4hupk1rd","versions":[{"created_at":"2026-07-18T00:30:11Z","element_count":74,"note":"5軸GA polish 44->97 by M5 (autonomous)","saved_by":"mcp","sha256":"8892e6b59e0261e4f935f203db462e0a9d1a55cae8a1a14de51728b6a9fc16f6","version":3},{"created_at":"2026-07-18T00:08:51Z","element_count":87,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"f1c9154392570a47312e8f8601c3a4c2eac78b204d6168181968daf39b38125c","version":2},{"created_at":"2026-07-18T00:08:51Z","element_count":87,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}