Get rid of double cache, filesystem checking for every tile fetch, swap out http interception for a fluttermap tileprovider that calls map_data, fix node rendering limit

lib/widgets/map_view.dart

@@ -610,14 +610,24 @@ class MapViewState extends State<MapView> {
             MarkerLayer(markers: [...suspectedLocationMarkers, ...markers, ...centerMarkers]),
             
             // Node limit indicator (top-left) - shown when limit is active
-            NodeLimitIndicator(
-              isActive: isLimitActive,
-              renderedCount: nodesToRender.length,
-              totalCount: isLimitActive ? allNodes.where((node) {
-                return (node.coord.latitude != 0 || node.coord.longitude != 0) &&
-                       node.coord.latitude.abs() <= 90 && 
-                       node.coord.longitude.abs() <= 180;
-              }).length : 0,
+            Builder(
+              builder: (context) {
+                final appState = context.read<AppState>();
+                // Add search bar offset when search bar is visible
+                final searchBarOffset = (!appState.offlineMode && appState.isInSearchMode) ? 60.0 : 0.0;
+                
+                return NodeLimitIndicator(
+                  isActive: isLimitActive,
+                  renderedCount: nodesToRender.length,
+                  totalCount: isLimitActive ? allNodes.where((node) {
+                    return (node.coord.latitude != 0 || node.coord.longitude != 0) &&
+                           node.coord.latitude.abs() <= 90 && 
+                           node.coord.longitude.abs() <= 180;
+                  }).length : 0,
+                  top: 8.0 + searchBarOffset,
+                  left: 8.0,
+                );
+              },
             ),
           ],
         );
@@ -774,7 +784,18 @@ class MapViewState extends State<MapView> {
 
         // Network status indicator (top-left) - conditionally shown
         if (appState.networkStatusIndicatorEnabled)
-          const NetworkStatusIndicator(),
+          Builder(
+            builder: (context) {
+              // Calculate position based on node limit indicator presence and search bar
+              final searchBarOffset = (!appState.offlineMode && appState.isInSearchMode) ? 60.0 : 0.0;
+              final nodeLimitOffset = isLimitActive ? 48.0 : 0.0; // Height of node limit indicator + spacing
+              
+              return NetworkStatusIndicator(
+                top: 8.0 + searchBarOffset + nodeLimitOffset,
+                left: 8.0,
+              );
+            },
+          ),
         
         // Proximity alert banner (top)
         ProximityAlertBanner(

lib/widgets/network_status_indicator.dart

@@ -4,7 +4,14 @@ import '../services/network_status.dart';
 import '../services/localization_service.dart';
 
 class NetworkStatusIndicator extends StatelessWidget {
-  const NetworkStatusIndicator({super.key});
+  final double top;
+  final double left;
+  
+  const NetworkStatusIndicator({
+    super.key,
+    this.top = 56.0,
+    this.left = 8.0,
+  });
 
   @override
   Widget build(BuildContext context) {
@@ -61,8 +68,8 @@ class NetworkStatusIndicator extends StatelessWidget {
             }
 
             return Positioned(
-              top: 56, // Position below node limit indicator when present
-              left: 8,
+              top: top, // Position dynamically based on other indicators
+              left: left,
               child: Container(
                 padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
                 decoration: BoxDecoration(

lib/widgets/node_limit_indicator.dart

@@ -5,12 +5,16 @@ class NodeLimitIndicator extends StatelessWidget {
   final bool isActive;
   final int renderedCount;
   final int totalCount;
+  final double top;
+  final double left;
   
   const NodeLimitIndicator({
     super.key,
     required this.isActive,
     required this.renderedCount,
     required this.totalCount,
+    this.top = 8.0,
+    this.left = 8.0,
   });
 
   @override
@@ -25,8 +29,8 @@ class NodeLimitIndicator extends StatelessWidget {
         .replaceAll('{total}', totalCount.toString());
 
     return Positioned(
-      top: 8, // Position at top-left of map area
-      left: 8,
+      top: top, // Position at top-left of map area
+      left: left,
       child: Container(
         padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
         decoration: BoxDecoration(

lib/widgets/node_tag_sheet.dart

@@ -37,6 +37,20 @@ class NodeTagSheet extends StatelessWidget {
                            node.tags['_pending_deletion'] != 'true');
         
         void _openEditSheet() {
+          // Check if node limit is active and warn user
+          if (isNodeLimitActive) {
+            ScaffoldMessenger.of(context).showSnackBar(
+              SnackBar(
+                content: Text(
+                  locService.t('nodeLimitIndicator.editingDisabledMessage')
+                ),
+                duration: const Duration(seconds: 4),
+                behavior: SnackBarBehavior.floating,
+              ),
+            );
+            return;
+          }
+          
           if (onEditPressed != null) {
             onEditPressed!(); // Use callback if provided
           } else {
@@ -206,7 +220,7 @@ class NodeTagSheet extends StatelessWidget {
                   children: [
                     if (isEditable) ...[
                       ElevatedButton.icon(
-                        onPressed: isNodeLimitActive ? null : _openEditSheet,
+                        onPressed: _openEditSheet,
                         icon: const Icon(Icons.edit, size: 18),
                         label: Text(locService.edit),
                         style: ElevatedButton.styleFrom(