app launches again, sorta working, map broken, settings page has configurable max cams.

lib/widgets/map_view.dart

@@ -158,13 +158,33 @@ class _MapViewState extends State<MapView> {
     } catch (_) {
       return; // controller not ready yet
     }
-    final cams = await _mapDataProvider.getCameras(
-      bounds: bounds,
-      profiles: appState.enabledProfiles,
-      uploadMode: appState.uploadMode,
-      // MapSource.auto (default) will prefer Overpass for now
-    );
-    if (mounted) setState(() => _cameras = cams);
+    // If too zoomed out, do NOT fetch cameras; show info
+    final zoom = _controller.camera.zoom;
+    if (zoom < 10) {
+      if (mounted) setState(() => _cameras = []);
+      // Show a snackbar-style bubble, if desired
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          const SnackBar(
+            content: Text('Cameras not drawn below zoom level 10'),
+            duration: Duration(seconds: 2),
+          ),
+        );
+      }
+      return;
+    }
+    try {
+      final cams = await _mapDataProvider.getCameras(
+        bounds: bounds,
+        profiles: appState.enabledProfiles,
+        uploadMode: appState.uploadMode,
+        // MapSource.auto (default) will prefer Overpass for now
+      );
+      if (mounted) setState(() => _cameras = cams);
+    } on OfflineModeException catch (_) {
+      // Swallow the error in offline mode
+      if (mounted) setState(() => _cameras = []);
+    }
   }
 
   double _safeZoom() {
@@ -199,14 +219,15 @@ class _MapViewState extends State<MapView> {
 
     // Camera markers first, then GPS dot, so blue dot is always on top
     final markers = <Marker>[ 
-      ..._cameras.map(
-        (n) => Marker(
+      ..._cameras
+        .where((n) => n.coord.latitude != 0 || n.coord.longitude != 0)
+        .where((n) => n.coord.latitude.abs() <= 90 && n.coord.longitude.abs() <= 180)
+        .map((n) => Marker(
           point: n.coord,
           width: 24,
           height: 24,
           child: _CameraMapMarker(node: n, mapController: _controller),
-        ),
-      ),
+        )),
       if (_currentLatLng != null)
         Marker(
           point: _currentLatLng!,
@@ -221,6 +242,8 @@ class _MapViewState extends State<MapView> {
         _buildCone(session.target!, session.directionDegrees, zoom),
       ..._cameras
           .where((n) => n.hasDirection && n.directionDeg != null)
+          .where((n) => n.coord.latitude != 0 || n.coord.longitude != 0)
+          .where((n) => n.coord.latitude.abs() <= 90 && n.coord.longitude.abs() <= 180)
           .map((n) => _buildCone(n.coord, n.directionDeg!, zoom)),
     ];
 
@@ -233,6 +256,7 @@ class _MapViewState extends State<MapView> {
             initialZoom: 15,
             maxZoom: 19,
             onPositionChanged: (pos, gesture) {
+              setState(() {}); // Instant UI update for zoom, etc.
               if (gesture) widget.onUserGesture();
               if (session != null) {
                 appState.updateSession(target: pos.center);
@@ -264,7 +288,7 @@ class _MapViewState extends State<MapView> {
                       return Image.memory(bytes, gaplessPlayback: true, fit: BoxFit.cover);
                     }
                   }
-                  return Image.asset('assets/transparent_1x1.png', gaplessPlayback: true, fit: BoxFit.cover);
+                  return tileWidget;
                 } catch (e) {
                   print('tileBuilder error: $e for tileImage: ${tileImage.toString()}');
                   return tileWidget;

lib/widgets/tile_provider_with_cache.dart

@@ -11,6 +11,7 @@ class TileProviderWithCache extends TileProvider {
   static final Map<String, Uint8List> _tileCache = {};
   static Map<String, Uint8List> get tileCache => _tileCache;
   final VoidCallback? onTileCacheUpdated;
+
   TileProviderWithCache({this.onTileCacheUpdated});
 
   @override
@@ -20,7 +21,7 @@ class TileProviderWithCache extends TileProvider {
       return MemoryImage(_tileCache[key]!);
     } else {
       _fetchAndCacheTile(coords, key);
-      // Return a transparent PNG until the tile is available.
+      // Use asset (robust, cross-platform) for non-existing tiles.
       return const AssetImage('assets/transparent_1x1.png');
     }
   }
@@ -39,9 +40,10 @@ class TileProviderWithCache extends TileProvider {
           SchedulerBinding.instance.addPostFrameCallback((_) => onTileCacheUpdated!());
         }
       }
+      // If bytes were empty, don't cache anything (will re-attempt next time)
     } catch (e) {
       print('[TileProviderWithCache] Error fetching tile $key: $e');
-      // Optionally: fall back to a different asset, or record failures
+      // Do NOT cache a failed/placeholder/empty tile!
     }
   }
 }