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/services/notification_debug_store.dart

@@ -0,0 +1,92 @@
+import 'dart:convert';
+
+import 'package:shared_preferences/shared_preferences.dart';
+
+class NotificationLogEntry {
+  final int id;
+  final String kind; // 'daily' | 'snooze'
+  final String type; // 'single' | 'group'
+  final int whenEpochMs; // exact scheduled time (epoch ms)
+  final int createdAtEpochMs; // when we created the schedule (epoch ms)
+  final String title;
+  final String payload;
+  final int? singleId; // supplement id for single
+  final String? timeKey; // HH:mm for group
+
+  const NotificationLogEntry({
+    required this.id,
+    required this.kind,
+    required this.type,
+    required this.whenEpochMs,
+    required this.createdAtEpochMs,
+    required this.title,
+    required this.payload,
+    this.singleId,
+    this.timeKey,
+  });
+
+  Map<String, dynamic> toJson() => {
+        'id': id,
+        'kind': kind,
+        'type': type,
+        'when': whenEpochMs,
+        'createdAt': createdAtEpochMs,
+        'title': title,
+        'payload': payload,
+        'singleId': singleId,
+        'timeKey': timeKey,
+      };
+
+  static NotificationLogEntry fromJson(Map<String, dynamic> map) {
+    return NotificationLogEntry(
+      id: map['id'] is int ? map['id'] as int : int.tryParse('${map['id']}') ?? 0,
+      kind: map['kind'] ?? 'unknown',
+      type: map['type'] ?? 'unknown',
+      whenEpochMs: map['when'] is int ? map['when'] as int : int.tryParse('${map['when']}') ?? 0,
+      createdAtEpochMs: map['createdAt'] is int ? map['createdAt'] as int : int.tryParse('${map['createdAt']}') ?? 0,
+      title: map['title'] ?? '',
+      payload: map['payload'] ?? '',
+      singleId: map['singleId'],
+      timeKey: map['timeKey'],
+    );
+  }
+}
+
+class NotificationDebugStore {
+  NotificationDebugStore._internal();
+  static final NotificationDebugStore instance = NotificationDebugStore._internal();
+
+  static const String _prefsKey = 'notification_log';
+  static const int _maxEntries = 200;
+
+  Future<List<NotificationLogEntry>> getAll() async {
+    final prefs = await SharedPreferences.getInstance();
+    final raw = prefs.getString(_prefsKey);
+    if (raw == null || raw.isEmpty) return [];
+    try {
+      final list = jsonDecode(raw) as List;
+      return list
+          .map((e) => NotificationLogEntry.fromJson(e as Map<String, dynamic>))
+          .toList();
+    } catch (_) {
+      return [];
+    }
+  }
+
+  Future<void> add(NotificationLogEntry entry) async {
+    final prefs = await SharedPreferences.getInstance();
+    final current = await getAll();
+    current.add(entry);
+    // Cap size
+    final trimmed = current.length > _maxEntries
+        ? current.sublist(current.length - _maxEntries)
+        : current;
+    final serialized = jsonEncode(trimmed.map((e) => e.toJson()).toList());
+    await prefs.setString(_prefsKey, serialized);
+  }
+
+  Future<void> clear() async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.remove(_prefsKey);
+  }
+}