pub fn tab(title: &str, system_image: &str, content: View) -> ViewExpand description
Tab("Home", systemImage: "house") { … } — one tab of a modern TabView.
The older way to build a tab is .tabItem { Label(…) } on the page itself;
Tab is the replacement, where the tab and its label are one value rather
than a modifier on the content.
A Tab is not a view — it is a TabContent, and only tab_view_tabs
accepts one.