UX and bones of suspected locations

lib/state/suspected_location_state.dart

@@ -0,0 +1,79 @@
+import 'package:flutter/foundation.dart';
+
+import '../models/suspected_location.dart';
+import '../services/suspected_location_service.dart';
+
+class SuspectedLocationState extends ChangeNotifier {
+  final SuspectedLocationService _service = SuspectedLocationService();
+  
+  SuspectedLocation? _selectedLocation;
+  bool _isLoading = false;
+
+  /// Currently selected suspected location (for detail view)
+  SuspectedLocation? get selectedLocation => _selectedLocation;
+
+  /// All suspected locations
+  List<SuspectedLocation> get locations => _service.locations;
+
+  /// Whether suspected locations are enabled
+  bool get isEnabled => _service.isEnabled;
+
+  /// Whether currently loading data
+  bool get isLoading => _isLoading || _service.isLoading;
+
+  /// Last time data was fetched
+  DateTime? get lastFetchTime => _service.lastFetchTime;
+
+  /// Initialize the state
+  Future<void> init() async {
+    await _service.init();
+    notifyListeners();
+  }
+
+  /// Enable or disable suspected locations
+  Future<void> setEnabled(bool enabled) async {
+    await _service.setEnabled(enabled);
+    notifyListeners();
+  }
+
+  /// Manually refresh the data
+  Future<bool> refreshData() async {
+    _isLoading = true;
+    notifyListeners();
+    
+    try {
+      final success = await _service.refreshData();
+      return success;
+    } finally {
+      _isLoading = false;
+      notifyListeners();
+    }
+  }
+
+  /// Select a suspected location for detail view
+  void selectLocation(SuspectedLocation location) {
+    _selectedLocation = location;
+    notifyListeners();
+  }
+
+  /// Clear the selected location
+  void clearSelection() {
+    _selectedLocation = null;
+    notifyListeners();
+  }
+
+  /// Get suspected locations within a bounding box
+  List<SuspectedLocation> getLocationsInBounds({
+    required double north,
+    required double south,
+    required double east,
+    required double west,
+  }) {
+    return _service.getLocationsInBounds(
+      north: north,
+      south: south,
+      east: east,
+      west: west,
+    );
+  }
+}