A colleague returning to work was asked where he spent his holiday. “Oh, my living room, my kitchen, my bathroom …” he said. Welcome to the joys of holidaying in your own home, the ultimate social-distancing staycation. No need to pack or check you have your passport. No air rage or jet lag. Cheap and convenient.This is the reality for those in Hong Kong seeking a summer break during the Covid-19 pandemic. Health risks, quarantine measures and visa restrictions have made travelling abroad…