helps with load speed and number of connection refused messages

lib/services/overpass_service.dart

@@ -1,8 +1,7 @@
 import 'dart:convert';
-
 import 'package:http/http.dart' as http;
-import 'package:flutter_map/flutter_map.dart';   // LatLngBounds
-import 'package:latlong2/latlong.dart';         // LatLng
+import 'package:flutter_map/flutter_map.dart';
+import 'package:latlong2/latlong.dart';
 
 import '../models/camera_profile.dart';
 import '../models/osm_camera_node.dart';
@@ -16,7 +15,7 @@ class OverpassService {
   ) async {
     if (profiles.isEmpty) return [];
 
-    // Combine enabled profile types into a regex
+    // Build regex of surveillance:type values from enabled profiles
     final types = profiles
         .map((p) => p.tags['surveillance:type'])
         .whereType<String>()
@@ -35,20 +34,25 @@ class OverpassService {
       out body 100;
     ''';
 
-    final resp =
-        await http.post(Uri.parse(_endpoint), body: {'data': query.trim()});
-    if (resp.statusCode != 200) return [];
+    try {
+      final resp =
+          await http.post(Uri.parse(_endpoint), body: {'data': query.trim()});
+      if (resp.statusCode != 200) return [];
 
-    final data = jsonDecode(resp.body) as Map<String, dynamic>;
-    final elements = data['elements'] as List<dynamic>;
+      final data = jsonDecode(resp.body) as Map<String, dynamic>;
+      final elements = data['elements'] as List<dynamic>;
 
-    return elements.whereType<Map<String, dynamic>>().map((e) {
-      return OsmCameraNode(
-        id: e['id'],
-        coord: LatLng(e['lat'], e['lon']),
-        tags: Map<String, String>.from(e['tags'] ?? {}),
-      );
-    }).toList();
+      return elements.whereType<Map<String, dynamic>>().map((e) {
+        return OsmCameraNode(
+          id: e['id'],
+          coord: LatLng(e['lat'], e['lon']),
+          tags: Map<String, String>.from(e['tags'] ?? {}),
+        );
+      }).toList();
+    } catch (_) {
+      // Network error – return empty list silently
+      return [];
+    }
   }
 }