Cassandra Beaugrand attacked in the closing stages to claim gold in the Olympic women’s triathlon in front of an ecstatic French home crowd, with the event going ahead after the Seine was declared safe to swim in a few hours earlier. World ranking leader Beaugrand broke a four-strong leader group to get France’s sixth gold of the Paris Games, six seconds ahead of Swiss Julie Derron. Britain’s Beth Potter got bronze as the second French athlete, Emma Lombardi, missed out in fourth. Tokyo 2020 gold medallist Flora Duffy of Bermuda led the 1.5 km swim but was caught in the 40 km cycling portion b…