What genius at the city’s Rec and Parks department thought of pairing Dynamo Donut and Coffee with the Little Marina Green snack kiosk? That person deserves a raise. After taking over in 2012, the Dynamo crew unblocked the boarded-up windows, set out cafe tables and umbrellas, and every day but Monday has been dispensing Four Barrel coffee and nearly a dozen kinds of doughnuts to shivering tourists and dog-walking locals alike. As at Dynamo’s Mission District HQ, the best seller here is the bacon maple apple, but if there’s an apricot cardamom left, grab it. Now.