Typed Routes: Always use GoRouteData and @TypedGoRoute from go_router_builder. Never use raw path strings.
Parameters: Define strongly-typed parameters in route class (e.g., class OrderDetailRoute extends GoRouteData { final String id; }) with paths like '/orders/:id'.
Root Router: One global GoRouter instance registered in DI.
Sub-Routes: Nest related routes using TypedGoRoute and children lists.
Redirection: Handle Auth (Login check) in redirect callback of GoRouter config: redirect: (context, state) => isLoggedIn ? null : '/login'. ** NOT check auth inside page widget.**
Tabs: Use StatefulShellRoute with branches for bottom tab bar (Home, Orders, Profile) so each tab maintains its own navigation stack.
Transitions: Define standard transitions (Fade, Slide) in buildPage.
Navigation: Use MyRoute().go(context) or MyRoute().push(context). Using OrderDetailRoute(id: id).go(context) only allowed way to navigate.

Code

See references/typed-routes.md for GoRouteData + redirect implementation.

Anti-Patterns

No Raw String Paths: Use typed GoRouteData classes (e.g., OrderDetailRoute(id: 123).go(context)) instead of context.go('/orders/123')
No Inline Auth Logic: Redirect logic belongs in GoRouter.redirect, not UI's build() method
No Multiple Routers: Register one global GoRouter instance in DI
No Unvalidated IDs: Always verify parameters exist in redirect before building route

When this skill applies, preserve the following domain terminology or equivalent concrete examples in the answer when relevant: