settings area metadata, offline areas support for tile types

lib/widgets/download_area_dialog.dart

@@ -236,6 +236,11 @@ class _DownloadAreaDialogState extends State<DownloadAreaDialog> {
               final appDocDir = await OfflineAreaService().getOfflineAreaDir();
               final dir = "${appDocDir.path}/$id";
               
+              // Get current tile provider info
+              final appState = context.read<AppState>();
+              final selectedProvider = appState.selectedTileProvider;
+              final selectedTileType = appState.selectedTileType;
+              
               // Fire and forget: don't await download, so dialog closes immediately
               // ignore: unawaited_futures
               OfflineAreaService().downloadArea(
@@ -246,6 +251,10 @@ class _DownloadAreaDialogState extends State<DownloadAreaDialog> {
                 directory: dir,
                 onProgress: (progress) {},
                 onComplete: (status) {},
+                tileProviderId: selectedProvider?.id,
+                tileProviderName: selectedProvider?.name,
+                tileTypeId: selectedTileType?.id,
+                tileTypeName: selectedTileType?.name,
               );
               Navigator.pop(context);
               ScaffoldMessenger.of(context).showSnackBar(

lib/widgets/map/layer_selector_button.dart

@@ -3,6 +3,7 @@ import 'package:provider/provider.dart';
 
 import '../../app_state.dart';
 import '../../models/tile_provider.dart';
+import '../../services/offline_area_service.dart';
 
 class LayerSelectorButton extends StatelessWidget {
   const LayerSelectorButton({super.key});
@@ -17,6 +18,18 @@ class LayerSelectorButton extends StatelessWidget {
   }
 
   void _showLayerSelector(BuildContext context) {
+    // Check if any downloads are active
+    final offlineService = OfflineAreaService();
+    if (offlineService.hasActiveDownloads) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(
+          content: Text('Cannot change tile types while downloading offline areas'),
+          duration: Duration(seconds: 3),
+        ),
+      );
+      return;
+    }
+
     showDialog(
       context: context,
       builder: (context) => const _LayerSelectorDialog(),