{"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-house-ze06m8os","versions":[{"created_at":"2026-06-10T23:00:33Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy87379776→quote20131232 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"4f0419392ab484eb270dc56bd37527c10e2f5e5f0851deed8ef2b0010441fda7","version":9},{"created_at":"2026-06-10T21:28:17Z","element_count":84,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"c243a0531bf5471f0f1b7683c12b137ec45e18c4d3e3f85a85bafcaa4f171bc8","version":3}]}