Chef Ken Oringer’s calm demeanor was almost unnerving. His flagship restaurant Clio looked more like a sawdust-coated workshop than an award-winning French eatery as construction workers worked on installing a new bar. During a tour of the mess, Oringer casually mentioned that the space would be reopening - in two days. “It will be ready,’’ he said. Two days later his prediction was correct. Clio reopened with its first renovation is 15 years, overseen once again by designer Peter Niemitz.