tiles not working but new map data provider exists in theory

lib/services/map_data_provider.dart

@@ -0,0 +1,67 @@
+import 'package:latlong2/latlong.dart';
+import 'package:flutter_map/flutter_map.dart';
+
+import '../models/camera_profile.dart';
+import '../models/osm_camera_node.dart';
+import '../app_state.dart';
+import 'map_data_submodules/cameras_from_overpass.dart';
+import 'map_data_submodules/tiles_from_osm.dart';
+
+enum MapSource { local, remote, auto } // For future use
+
+class OfflineModeException implements Exception {
+  final String message;
+  OfflineModeException(this.message);
+  @override
+  String toString() => 'OfflineModeException: $message';
+}
+
+class MapDataProvider {
+  static final MapDataProvider _instance = MapDataProvider._();
+  factory MapDataProvider() => _instance;
+  MapDataProvider._();
+
+  bool _offlineMode = false;
+  bool get isOfflineMode => _offlineMode;
+  void setOfflineMode(bool enabled) {
+    _offlineMode = enabled;
+  }
+
+  /// Fetch cameras from OSM/Overpass or local storage, depending on source/offline mode.
+  Future<List<OsmCameraNode>> getCameras({
+    required LatLngBounds bounds,
+    required List<CameraProfile> profiles,
+    UploadMode uploadMode = UploadMode.production,
+    MapSource source = MapSource.auto,
+  }) async {
+    // Resolve source:
+    if (_offlineMode && source != MapSource.local) {
+      throw OfflineModeException("Cannot fetch remote cameras in offline mode.");
+    }
+    if (source == MapSource.local) {
+      // TODO: implement local camera loading
+      throw UnimplementedError('Local camera loading not yet implemented.');
+    } else {
+      // Use Overpass remote fetch, from submodule:
+      return camerasFromOverpass(bounds: bounds, profiles: profiles, uploadMode: uploadMode);
+    }
+  }
+  /// Fetch tile image bytes from OSM or local (future). Only fetches, does not save!
+  Future<List<int>> getTile({
+    required int z,
+    required int x,
+    required int y,
+    MapSource source = MapSource.auto,
+  }) async {
+    if (_offlineMode && source != MapSource.local) {
+      throw OfflineModeException("Cannot fetch remote tiles in offline mode.");
+    }
+    if (source == MapSource.local) {
+      // TODO: implement local tile loading
+      throw UnimplementedError('Local tile loading not yet implemented.');
+    } else {
+      // Use OSM remote fetch from submodule:
+      return fetchOSMTile(z: z, x: x, y: y);
+    }
+  }
+}