Sharon Robinson, author of Stealing Home, a memoir of her family life with baseball dad Jackie Robinson, held court last Friday at what’s becoming the Island’s clubhouse, The Oyster Bar & Grill. From weddings to fundraisers, the trendy eatery at the top of Circuit avenue in Oak Bluffs, with high wooden booths and brown satin curtains that put you in mind of Renoir and absinthe-sippers, has hosted a string of special events. This past Friday it was the scene of Ms. Robinson’s talk, the third in a NAACP series of summer luncheons.