With restaurants and shopping centres bustling, pre-pandemic life is slowly returning for people in Singapore – except for the more than 300,000 migrant workers who make up much of the city’s low-wage workforce.Since April, these workers have been confined to their residences with limited exceptions for work. After an extensive testing and quarantine campaign, the government cleared the dormitories where most of these workers live of Covid-19 in August, letting residents leave for several …