After a bruising election loss, the Coalition is at a crossroads. Can it reinvent itself as a credible alternative to Labor, or will internal divisions over nuclear energy, net zero and the Liberal party’s identity doom it to another term in opposition? Guardian Australia chief political correspondent, Tom McIlroy, speaks with the deputy opposition leader, Ted O’Brien, about the road ahead – from climate policy to rebuilding trust – and whether the Coalition can rise from the ashes of defeat