device management features, settings module and contact sync

Device management:
  - Activity meter with steps charts and history
  - Apps usage with daily breakdown and top apps
  - Health monitoring (heart rate, oxygen, blood pressure)
  - Scheduled activities with timeline and CRUD
  - Contacts sync to device via contact-lists
  - Locate device, rewards refactor

  Settings (new module):
  - Block phone
  - SOS contacts
  - WiFi networks
  - Alarm refactor with full CRUD
  - Settings menu with feature stubs

  Account:
  - Personal data and account settings refactor

  Shared:
  - 100+ i18n keys in 6 languages
  - New routes in app_router
  - WeekDayChips, TimeRangeSelector shared widgets
  - Legacy dashboard shell simplified

modules/auth/lib/src/features/onboarding/presentation/onboarding_screen.dart

@@ -32,7 +32,7 @@ class OnboardingScreen extends ConsumerWidget {
 
     void goToNext() {
       if (isLast) {
-        navigationContract.goTo(AppRoutes.login);
+        navigationContract.goTo(AppRoutes.legacyLogin);
       } else {
         pageController.nextPage(
           duration: const Duration(milliseconds: 400),
@@ -111,7 +111,7 @@ class OnboardingScreen extends ConsumerWidget {
                     ? const SizedBox.shrink()
                     : TextButton(
                         onPressed: () =>
-                            navigationContract.goTo(AppRoutes.login),
+                            navigationContract.goTo(AppRoutes.legacyLogin),
                         child: Text(
                           context.translate(I18n.skip),
                           style: AppFonts.stolzlStyle(