At 67, Stephen Lambert became eligible for the COVID-19 vaccine in February under Massachusetts protocols. But it seemed the Woburn resident might need an unusually lengthy lifespan if he wanted to book a shot through the state’s online registration system… Patience fraying, he logged on to a website that had just gone live that weekend: Massachusetts COVID Vaccination Help, designed by Jonathan Huggins, a College of Arts & Sciences assistant professor of mathematics and statistics, and his wife, Diana Rastegayeva. Lambert submitted his information that same Monday; the next day, a volunteer named Allison called.