NEW: Supreme Court decisions on abortion & gun rights sends city officials scrambling; SFPD won’t negotiate budget requests; school board reverses decisions on Lowell High School admission and controversial mural cover-up. NEXT: SFMTA decision makers to vote on union salaries and $7M cost for temporary facility; voters will decide fate of sales tax; SFPD equipment scrutinized; proposal to add gender identity to anti-discrimination rules; mitigating impact of ride-hailing and self-driving passenger service; upcoming 4th of July celebrations; supervisors weigh in on proposed $717M budget.