SEATTLE — A demoted Seattle police commander who sued the city for alleged discrimination, accusing police Chief Adrian Diaz of unfairly blaming him for the infamous “pink umbrella incident” during 2020’s Black Lives Matter demonstrations, has settled his case. An agreement signed by Capt. Steve Hirjak in September requires the city to pay Hirjak and his attorney’s firm about $600,000, in installments, to settle the lawsuit. As part of the settlement, the city must promote Hirjak back to assistant chief on March 1, 2024, and he must then immediately resign. The settlement said Hirjak would rec…