{"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-qjnv55cj","versions":[{"created_at":"2026-06-11T00:31:35Z","element_count":90,"note":"5軸GA polish 64->97 by M5 (autonomous)","saved_by":"mcp","sha256":"e1458e66c6c2ea059f225dc7193810c8885d7b32eae620fa5d486800bba8a6f8","version":15},{"created_at":"2026-06-10T23:10:26Z","element_count":47,"note":"legacy fix: rooms設備語除去 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"d138ffa6d259cd8a5863e5eeac8bd365e777c1c00b526a9dae539134b15f031f","version":7}]}