619acc3c08
Add ConnzSortOption enum (ConnectionId, Start, BytesTo, BytesFrom, MsgsTo, MsgsFrom, Subscriptions, Pending, Uptime, Idle, LastActivity) and ConnzSorter static class with Parse(string?) and Sort(IEnumerable<ConnInfo>, ConnzSortOption, bool) methods. Add SortBy and SortDescending properties to ConnzFilterOptions and wire them through ConnzFilterOptions.Parse (?sort= and ?desc= query params). Add 10 unit tests in ConnzSortTests covering Parse defaults, known values, unknown string fallback, and sort ordering for key fields. Go reference: server/monitor_sort_opts.go, server/monitor.go Connz().