When the call came to say Karen O’Neill’s cans were exploding in a storeroom, it was one of those moments that seemed to tip her life into theatrical farce.  After three years of setbacks, it was supposed to be the week that an even keel was reached, a sojourn in the swell caused by the Covid-19 pandemic.  O’Neill was about to close a funding round led by Enterprise Ireland and should have been planning a glass of champagne to celebrate, but instead, she was recalling all of her products from retailers around the country. Broke and exhausted, it seemed if there…