So... the good news:
Harris's endorsements will eat up all the media oxygen and drive Trump crazy.
The Biden/Harris war chest can be used by her.
The MAGA crowd are going to go full-on racist, and there are independents and some Republicans who, while willfully blind to the dog whistles, won't be able to swallow the out loud racism, and vote for her quietly.
Her championing of the cause of abortion rights will confront women in a way Biden couldn't.