Construction has reached the final floor of 335 Eighth Avenue, a seven-story residential building in Chelsea, Manhattan. Designed by COOKFOX Architects and developed by MAG Partners and Mutual Redevelopment Houses, Inc., the 200,000-square-foot structure will yield 188 rental units in studio to two-bedroom layouts, a 23,000-square-foot Lidl supermarket, and additional ground-floor retail space. Thirty percent…