Gov. Tina Kotek’s Prosperity Council has issued a clear challenge to the governor on: Make a package of relatively small changes to the state’s tax code and replace the controversial Climate Protection Program — or risk the state’s further economic slide. “Without meaningful change, Oregon risks falling into a cycle of economic stagnation, declining public confidence, eroding services and fewer pathways to upward mobility,” the panel wrote in its final report, issued Thursday, June 25.