feat: Implement snooze functionality for notifications

- Added snooze duration setting in SettingsScreen.
- Created DebugNotificationsScreen to view pending notifications and logs.
- Integrated notification logging with NotificationDebugStore.
- Enhanced SimpleNotificationService to handle snooze actions and log notifications.
- Removed ProfileSetupScreen as it is no longer needed.
- Updated NotificationRouter to manage snooze actions without UI.
- Refactored settings provider to include snooze duration management.

lib/providers/settings_provider.dart

@@ -24,7 +24,8 @@ class SettingsProvider extends ChangeNotifier {
   int _nightStart = 23;
   int _nightEnd = 4;
 
-
+  // Notifications
+  int _snoozeMinutes = 10;
 
   // Auto-sync settings
   bool _autoSyncEnabled = false;
@@ -32,19 +33,6 @@ class SettingsProvider extends ChangeNotifier {
 
   ThemeOption get themeOption => _themeOption;
 
-  // Profile getters
-  DateTime? get dateOfBirth => _dateOfBirth;
-  String? get gender => _gender;
-  int? get age {
-    if (_dateOfBirth == null) return null;
-    final now = DateTime.now();
-    int years = now.year - _dateOfBirth!.year;
-    final hasHadBirthday = (now.month > _dateOfBirth!.month) ||
-        (now.month == _dateOfBirth!.month && now.day >= _dateOfBirth!.day);
-    if (!hasHadBirthday) years--;
-    return years;
-  }
-
   // Time range getters
   int get morningStart => _morningStart;
   int get morningEnd => _morningEnd;
@@ -55,7 +43,8 @@ class SettingsProvider extends ChangeNotifier {
   int get nightStart => _nightStart;
   int get nightEnd => _nightEnd;
 
-
+  // Notifications
+  int get snoozeMinutes => _snoozeMinutes;
 
   // Auto-sync getters
   bool get autoSyncEnabled => _autoSyncEnabled;
@@ -104,7 +93,8 @@ class SettingsProvider extends ChangeNotifier {
     _nightStart = prefs.getInt('night_start') ?? 23;
     _nightEnd = prefs.getInt('night_end') ?? 4;
 
-
+    // Load snooze setting
+    _snoozeMinutes = prefs.getInt('snooze_minutes') ?? 10;
 
     // Load auto-sync settings
     _autoSyncEnabled = prefs.getBool('auto_sync_enabled') ?? false;
@@ -269,7 +259,18 @@ class SettingsProvider extends ChangeNotifier {
     }
   }
 
+  // Notifications setters
+  Future<void> setSnoozeMinutes(int minutes) async {
+    const allowed = [5, 10, 15, 20];
+    if (!allowed.contains(minutes)) {
+      throw ArgumentError('Snooze minutes must be one of ${allowed.join(", ")}');
+    }
+    _snoozeMinutes = minutes;
+    notifyListeners();
 
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setInt('snooze_minutes', minutes);
+  }
 
   // Auto-sync setters
   Future<void> setAutoSyncEnabled(bool enabled) async {