It remains to be seen what Jim Harbaugh’s next contract at Michigan looks like — that’s if there is a next contract at Michigan, of course. But this we know: Harbaugh’s net worth grew significantly Monday night, following the Wolverines’ 34-13 victory over Washington in the national championship game in Houston. The national championship, Michigan’s first since 1997, earned Harbaugh a $1 million bonus, on top of the $2 million in bonuses he already had secured this season — $500,000 for winning the Big Ten East, $1 million for winning the Big Ten championship game, and $500,000 for making the …