feat: enforce hierarchical back navigation and home-only exit

apps/lib/features/home/ui/navigation/home_return_policy.dart

@@ -8,7 +8,11 @@ enum HomeReturnAction { pop, goHome }
 HomeReturnAction resolveHomeReturnAction({
   required bool canPop,
   required bool isAuthEntry,
+  bool forceGoHome = false,
 }) {
+  if (forceGoHome) {
+    return HomeReturnAction.goHome;
+  }
   if (isAuthEntry) {
     return HomeReturnAction.goHome;
   }
@@ -21,10 +25,12 @@ HomeReturnAction resolveHomeReturnAction({
 void returnToHomePreserveState(
   BuildContext context, {
   bool isAuthEntry = false,
+  bool forceGoHome = false,
 }) {
   final action = resolveHomeReturnAction(
     canPop: context.canPop(),
     isAuthEntry: isAuthEntry,
+    forceGoHome: forceGoHome,
   );
   switch (action) {
     case HomeReturnAction.pop: