Fix offline area size estimates, zoom level metadata display

lib/services/localization_service.dart

@@ -99,10 +99,10 @@ class LocalizationService extends ChangeNotifier {
     
     String result = current is String ? current : key;
     
-    // Replace parameters if provided
+    // Replace parameters if provided - replace first occurrence only for each parameter
     if (params != null) {
       for (int i = 0; i < params.length; i++) {
-        result = result.replaceAll('{}', params[i]);
+        result = result.replaceFirst('{}', params[i]);
       }
     }
     

lib/services/offline_areas/offline_area_downloader.dart

@@ -156,7 +156,7 @@ class OfflineAreaDownloader {
     );
     area.nodes = nodes;
     await OfflineAreaDownloader.saveNodes(nodes, directory);
-    debugPrint('Area ${area.id}: Downloaded ${nodes.length} nodes from modestly expanded bounds (zoom $nodeZoom vs tile minZoom $minZoom)');
+    debugPrint('Area ${area.id}: Downloaded ${nodes.length} nodes from modestly expanded bounds (all profiles)');
   }
 
   /// Calculate expanded bounds that cover the entire tile area at minimum zoom