Photos: Alessio Neri SAN FRANCISCO — Before Chairlift officially parts ways at the end of the month, the Brooklyn electronic and R&B duo Thursday embarked on one last tour, beginning with two shows at Bimbo’s. Chairlift, Miya Folick 9 p.m., Friday Bimbo’s Tickets: $20 (Sold out). Singer-songwriter Caroline Polachek…

Chairlift, Courtesy: Tim Barber. Brooklyn synthpop-cum-R&B duo Chairlift is barreling full steam ahead, firing on all cylinders. In the last three years, Caroline Polachek (vocals, synths, drum machines, arrangements) and Patrick Wimberly (drums, bass, keyboard, guitar, backing vocals) have simultaneously collaborated with several other musicians — most notably Beyoncé…