Decades before Nike moved to its bucolic corporate campus with running trails, a six-acre lake and a salon, employees worked out of what’s now a collision repair shop on Southeast Powell Boulevard. They needed a javelin to close the windows and worked from desks that co-founder Phil Knight separated with plywood. This week, Nike is honoring Knight with “Founder’s Week,” and marking the recent renaming of the company’s leafy 400-acre campus the Philip H. Knight Campus.