The defeat was so profound Thursday night that Brandon Staley had to face the toughest questions immediately in its ugly, embarrassing, onesided wake. Does he expect to still be the Chargers’ head coach Friday morning? “I don’t know that.” Should he be? “Yes.” Why? “I know what I’ve done here for three years,” Staley explained. “I know what I put into this. … I know the type of coach that I am…