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

apps/mobile_app/pubspec.lock

@@ -406,6 +406,14 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_contacts:
+    dependency: transitive
+    description:
+      name: flutter_contacts
+      sha256: "388d32cd33f16640ee169570128c933b45f3259bddbfae7a100bb49e5ffea9ae"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.9+2"
   flutter_launcher_icons:
     dependency: "direct dev"
     description: