{"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-ox0pvdtz","versions":[{"created_at":"2026-06-11T00:31:35Z","element_count":71,"note":"5軸GA polish 63->96 by M5 (autonomous)","saved_by":"mcp","sha256":"dc1958ff81e6619c77e50cafc1a3747de1f042f3738943dec8b73330de46c4c3","version":15},{"created_at":"2026-06-10T23:10:28Z","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":"a7d24ce433d851a5f14cfa579589fd18c9752d86f827d34ff722e90cea99affc","version":7}]}