{"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-fmm4mqkc","versions":[{"created_at":"2026-06-10T23:00:41Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy84287347→quote22161645 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"9899420268efeaf549ee2242debc136c4a8a7c1b1b61a38e7db2b4a2b528c9cf","version":9},{"created_at":"2026-06-10T20:54:14Z","element_count":89,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"cc1219e94a480f801ea57ab317b6b48a7f7b48afbf8d0f15777e7902ca33ee3e","version":3}]}