Revert "feat: Add placeholder for unimplemented features in Get Started, Home, and Profile modules"

This reverts commit 8f8c6ff2d2.

apps/mobile/packages/features/staff/authentication/lib/src/presentation/pages/get_started_page.dart

@@ -16,14 +16,8 @@ class GetStartedPage extends StatelessWidget {
   const GetStartedPage({super.key});
 
   /// On sign up pressed callback.
-  void onSignUpPressed(BuildContext context) {
-    /// TODO: FEATURE_NOT_YET_IMPLEMENTED
-    /// Replace with actual sign up flow when implemented
-   ScaffoldMessenger.of(context).showSnackBar(
-      const SnackBar(
-        content: Text('Sign Up feature not yet implemented.'),
-      ),
-    );
+  void onSignUpPressed() {
+    Modular.to.pushPhoneVerification(AuthMode.signup);
   }
 
   /// On login pressed callback.
@@ -54,7 +48,7 @@ class GetStartedPage extends StatelessWidget {
 
                   // Actions
                   GetStartedActions(
-                    onSignUpPressed: () => onSignUpPressed(context),
+                    onSignUpPressed: onSignUpPressed,
                     onLoginPressed: onLoginPressed,
                   ),