{"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-mhxz13vg","versions":[{"created_at":"2026-06-10T22:58:47Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy85444799→quote23910325 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"3caa7e992bed2620ba015608f7862a1c16a45cd9977095f0b343bf35182915c0","version":10},{"created_at":"2026-06-10T22:02:00Z","element_count":55,"note":"revert: houki rescan NG -> restore pre-polish elements (M5 2026-06-11)","saved_by":"mcp","sha256":"db680c75adb67a0f9617ba918e762a476fe9a6c326929c9ad5c61ee5f553568e","version":4},{"created_at":"2026-06-10T20:22:37Z","element_count":73,"note":"5軸GA polish 60->96 by M5 (autonomous)","saved_by":"mcp","sha256":"2dcd99c1f79e742ed20c4a318bc73ada0e03d666a67cb155ee1d1f7296004327","version":2}]}