improve data indicator, offline fetching, offline area loading

lib/widgets/download_area_dialog.dart

@@ -55,7 +55,7 @@ class _DownloadAreaDialogState extends State<DownloadAreaDialog> {
       );
     }
     
-    final minZoom = kWorldMaxZoom + 1;
+    final minZoom = 1; // Always start from zoom 1 to show area overview when zoomed out
     final maxZoom = _zoom.toInt();
     
     // Calculate maximum possible zoom based on tile count limit

lib/widgets/map_view.dart

@@ -300,8 +300,8 @@ class MapViewState extends State<MapView> {
                 appState.updateEditSession(target: pos.center);
               }
               
-              // Show waiting indicator when map moves (user is expecting new content)
-              NetworkStatus.instance.setWaiting();
+              // Start dual-source waiting when map moves (user is expecting new tiles AND nodes)
+              NetworkStatus.instance.setDualSourceWaiting();
               
               // Only clear tile queue on significant ZOOM changes (not panning)
               final currentZoom = pos.zoom;
@@ -323,6 +323,9 @@ class MapViewState extends State<MapView> {
               // Request more cameras on any map movement/zoom at valid zoom level (slower debounce)
               if (pos.zoom >= 10) {
                 _cameraDebounce(_refreshCamerasFromProvider);
+              } else {
+                // Skip nodes at low zoom - report immediate completion (brutalist approach)
+                NetworkStatus.instance.reportNodeComplete();
               }
             },
           ),

lib/widgets/network_status_indicator.dart

@@ -35,7 +35,7 @@ class NetworkStatusIndicator extends StatelessWidget {
               break;
 
             case NetworkStatusType.success:
-              message = 'Tiles loaded';
+              message = 'Done';
               icon = Icons.check_circle;
               color = Colors.green;
               break;
@@ -43,7 +43,7 @@ class NetworkStatusIndicator extends StatelessWidget {
             case NetworkStatusType.issues:
               switch (networkStatus.currentIssueType) {
                 case NetworkIssueType.osmTiles:
-                  message = 'OSM tiles slow';
+                  message = 'Tile provider slow';
                   icon = Icons.map_outlined;
                   color = Colors.orange;
                   break;