The Tennessee General Assembly cannot unilaterally shrink the size of Nashville’s Metro Council, a panel of judges ruled 2-1 Monday, finding a 2023 law violated a state constitutional amendment protecting local sovereignty. The state has 30 days to appeal the ruling. The decision continues the city’s undefeated record in its fight to retain local control of Nashville after the General Assembly passed a handful of bills attempting to take over various aspects of the city’s governance in 2023. Start the day smarter. Get all the news you need in your inbox each morning. “I’m pleased with the court’s decision to…