描述
Implement, fix, refactor, review, migrate, or validate Flutter navigation and routing. Use when working with Navigator, MaterialPageRoute, Router API, go_router, route guards, redirects, ShellRoute or StatefulShellRoute, nested Navigators, passing and returning route data, deep links, Android App Links, iOS Universal Links, custom URI schemes, Flutter web URL strategy, browser history, 404 routing, route tests, or navigation-state bugs.