With a recent uptick in gentrification griping in Carroll Gardens, Candy Chang’s interactive art project in the window of a vintage furniture store on Court Street was well-timed. For one week, passersby were invited to share their apartment info and rent costs on Post-it notes. After culling 151 responses, Chang tallied the info and found that:One resident has lived in a studio in Carroll Gardens for 43 years with a current rent of $146.Another......