The Golden State Warriors hope to mix in some current-day significance amid the nostalgia Sunday night when they invite the Los Angeles Clippers for a party that otherwise will go down as their final regular-season game ever at Oracle Arena in Oakland, Calif. The Warriors, who moved from Philadelphia to San Francisco in 1962 and then to Oakland in 1971, are scheduled to return to San Francisco in the still-under-construction downtown Chase Center next season. They hope to do so having won four championships in their final five seasons in Oakland, a trek that begins next weekend with the first round of the NBA playoffs.