San Jose may weaken an ordinance that guarantees a living wage to anyone working for a private tenant of a city-owned property. The 16-year-old living wage policy requires commercial and other private tenants on city leases to pay above the minimum wage, at least $15.78 an hour with benefits or $17.03 without. Other items on Tuesday’s City Council agenda include changes to the city’s cardroom ordinance, an audit of employee travel expenses and a six-figure contract for new art and light displays.