The simplest smart city/village is one with internet connection. We don’t need schools. We only need internet (and not for tiktok). After that human ingenuity with take over and do the rest.
However if we’re keen for a Wakanda, Paul Romer’s idea of charter cities is worth looking at. HOWEVER, cities are organisms that use network effects to generate increasing returns to scale. Thus we need to pick sectors where participants need to be in one place to reap all the benefits. If there are no such sectors, we’ll just be building White Elephants.