Merge pull request #16 from FoggedLens/approach-notifications

Approach notifications

DEVELOPER.md

@@ -0,0 +1,425 @@
+# Developer Documentation
+
+This document provides detailed technical information about the DeFlock app architecture, key design decisions, and development guidelines.
+
+---
+
+## Philosophy: Brutalist Code
+
+Our development approach prioritizes **simplicity over cleverness**:
+
+- **Explicit over implicit**: Clear, readable code that states its intent
+- **Few edge cases by design**: Avoid complex branching and special cases
+- **Maintainable over efficient**: Choose the approach that's easier to understand and modify
+- **Delete before adding**: Remove complexity when possible rather than adding features
+
+**Hierarchy of preferred code:**
+1. **Code we don't write** (through thoughtful design and removing edge cases)
+2. **Code we can remove** (by seeing problems from a new angle)
+3. **Code that sadly must exist** (simple, explicit, maintainable)
+
+---
+
+## Architecture Overview
+
+### State Management
+
+The app uses **Provider pattern** with modular state classes:
+
+```
+AppState (main coordinator)
+├── AuthState (OAuth2 login/logout)
+├── OperatorProfileState (operator tag sets)
+├── ProfileState (node profiles & toggles)
+├── SessionState (add/edit sessions)
+├── SettingsState (preferences & tile providers)
+└── UploadQueueState (pending operations)
+```
+
+**Why this approach:**
+- **Separation of concerns**: Each state handles one domain
+- **Testability**: Individual state classes can be unit tested
+- **Brutalist**: No complex state orchestration, just simple delegation
+
+### Data Flow Architecture
+
+```
+UI Layer (Widgets)
+    ↕️
+AppState (Coordinator) 
+    ↕️
+State Modules (AuthState, ProfileState, etc.)
+    ↕️
+Services (MapDataProvider, NodeCache, Uploader)
+    ↕️
+External APIs (OSM, Overpass, Tile providers)
+```
+
+**Key principles:**
+- **Unidirectional data flow**: UI → AppState → Services → APIs
+- **No direct service access from UI**: Everything goes through AppState
+- **Clean boundaries**: Each layer has a clear responsibility
+
+---
+
+## Core Components
+
+### 1. MapDataProvider
+
+**Purpose**: Unified interface for fetching map tiles and surveillance nodes
+
+**Design decisions:**
+- **Pluggable sources**: Local (cached) vs Remote (live API)
+- **Offline-first**: Always try local first, graceful degradation
+- **Mode-aware**: Different behavior for production vs sandbox
+- **Failure handling**: Never crash the UI, always provide fallbacks
+
+**Key methods:**
+- `getNodes()`: Smart fetching with local/remote merging
+- `getTile()`: Tile fetching with caching
+- `_fetchRemoteNodes()`: Handles Overpass → OSM API fallback
+
+**Why unified interface:**
+The app needs to seamlessly switch between multiple data sources (local cache, Overpass API, OSM API, offline areas) based on network status, upload mode, and zoom level. A single interface prevents the UI from needing to know about these complexities.
+
+### 2. Node Operations (Create/Edit/Delete)
+
+**Upload Operations Enum:**
+```dart
+enum UploadOperation { create, modify, delete }
+```
+
+**Why explicit enum vs boolean flags:**
+- **Brutalist**: Three explicit states instead of nullable booleans
+- **Extensible**: Easy to add new operations (like bulk operations)
+- **Clear intent**: `operation == UploadOperation.delete` is unambiguous
+
+**Session Pattern:**
+- `AddNodeSession`: For creating new nodes
+- `EditNodeSession`: For modifying existing nodes
+- No "DeleteSession": Deletions are immediate (simpler)
+
+**Why no delete session:**
+Deletions don't need position dragging or tag editing - they just need confirmation and queuing. A session would add complexity without benefit.
+
+### 3. Upload Queue System
+
+**Design principles:**
+- **Operation-agnostic**: Same queue handles create/modify/delete
+- **Offline-capable**: Queue persists between app sessions
+- **Visual feedback**: Each operation type has distinct UI state
+- **Error recovery**: Retry mechanism with exponential backoff
+
+**Queue workflow:**
+1. User action (add/edit/delete) → `PendingUpload` created
+2. Immediate visual feedback (cache updated with temp markers)
+3. Background uploader processes queue when online
+4. Success → cache updated with real data, temp markers removed
+5. Failure → error state, retry available
+
+**Why immediate visual feedback:**
+Users expect instant response to their actions. By immediately updating the cache with temporary markers (e.g., `_pending_deletion`), the UI stays responsive while the actual API calls happen in background.
+
+### 4. Cache & Visual States
+
+**Node visual states:**
+- **Blue ring**: Real nodes from OSM
+- **Purple ring**: Pending uploads (new nodes)
+- **Grey ring**: Original nodes with pending edits
+- **Orange ring**: Node currently being edited
+- **Red ring**: Nodes pending deletion
+
+**Cache tags for state tracking:**
+```dart
+'_pending_upload'    // New node waiting to upload
+'_pending_edit'      // Original node has pending edits
+'_pending_deletion'  // Node queued for deletion
+'_original_node_id'  // For drawing connection lines
+```
+
+**Why underscore prefix:**
+These are internal app tags, not OSM tags. The underscore prefix makes this explicit and prevents accidental upload to OSM.
+
+### 5. Multi-API Data Sources
+
+**Production mode:** Overpass API → OSM API fallback
+**Sandbox mode:** OSM API only (Overpass doesn't have sandbox data)
+
+**Zoom level restrictions:**
+- **Production (Overpass)**: Zoom ≥ 10 (established limit)
+- **Sandbox (OSM API)**: Zoom ≥ 13 (stricter due to bbox limits)
+
+**Why different zoom limits:**
+The OSM API returns ALL data types (nodes, ways, relations) in a bounding box and has stricter size limits. Overpass is more efficient for large areas. The zoom restrictions prevent API errors and excessive data transfer.
+
+### 6. Offline vs Online Mode Behavior
+
+**Mode combinations:**
+```
+Production + Online  → Local cache + Overpass API
+Production + Offline → Local cache only
+Sandbox + Online     → OSM API only (no cache mixing)
+Sandbox + Offline    → No nodes (cache is production data)
+```
+
+**Why sandbox + offline = no nodes:**
+Local cache contains production data. Showing production nodes in sandbox mode would be confusing and could lead to users trying to edit production nodes with sandbox credentials.
+
+---
+
+## Key Design Decisions & Rationales
+
+### 1. Why Provider Pattern?
+
+**Alternatives considered:**
+- BLoC: Too verbose for our needs
+- Riverpod: Added complexity without clear benefit
+- setState: Doesn't scale beyond single widgets
+
+**Why Provider won:**
+- **Familiar**: Most Flutter developers know Provider
+- **Simple**: Minimal boilerplate
+- **Flexible**: Easy to compose multiple providers
+- **Battle-tested**: Mature, stable library
+
+### 2. Why Separate State Classes?
+
+**Alternative**: Single monolithic AppState
+
+**Why modular state:**
+- **Single responsibility**: Each state class has one concern
+- **Testability**: Easier to unit test individual features
+- **Maintainability**: Changes to auth don't affect profile logic
+- **Team development**: Different developers can work on different states
+
+### 3. Why Upload Queue vs Direct API Calls?
+
+**Alternative**: Direct API calls from UI actions
+
+**Why queue approach:**
+- **Offline capability**: Actions work without internet
+- **User experience**: Instant feedback, no waiting for API calls
+- **Error recovery**: Failed uploads can be retried
+- **Batch processing**: Could optimize multiple operations
+- **Visual feedback**: Users can see pending operations
+
+### 4. Why Overpass + OSM API vs Just One?
+
+**Why not just Overpass:**
+- Overpass doesn't have sandbox data
+- Overpass can be unreliable/slow
+- OSM API is canonical source
+
+**Why not just OSM API:**
+- OSM API has strict bbox size limits
+- OSM API returns all data types (inefficient)
+- Overpass is optimized for surveillance device queries
+
+**Result**: Use the best tool for each situation
+
+### 5. Why Zoom Level Restrictions?
+
+**Alternative**: Always fetch, handle errors gracefully
+
+**Why restrictions:**
+- **Prevents API abuse**: Large bbox queries can overload servers
+- **User experience**: Fetching 10,000 nodes causes UI lag
+- **Battery life**: Excessive network requests drain battery
+- **Clear feedback**: Users understand why nodes aren't showing
+
+---
+
+## Development Guidelines
+
+### 1. Adding New Features
+
+**Before writing code:**
+1. Can we solve this by removing existing code?
+2. Can we simplify the problem to avoid edge cases?
+3. Does this fit the existing patterns?
+
+**When adding new upload operations:**
+1. Add to `UploadOperation` enum
+2. Update `PendingUpload` serialization
+3. Add visual state (color, icon)
+4. Update uploader logic
+5. Add cache cleanup handling
+
+### 2. Testing Philosophy
+
+**Priority order:**
+1. **Integration tests**: Test complete user workflows
+2. **Widget tests**: Test UI components with mock data
+3. **Unit tests**: Test individual state classes
+
+**Why integration tests first:**
+The most important thing is that user workflows work end-to-end. Unit tests can pass while the app is broken from a user perspective.
+
+### 3. Error Handling
+
+**Principles:**
+- **Never crash the UI**: Always provide fallbacks
+- **Fail gracefully**: Empty list is better than exception
+- **User feedback**: Show meaningful error messages
+- **Logging**: Use debugPrint for troubleshooting
+
+**Example pattern:**
+```dart
+try {
+  final result = await riskyOperation();
+  return result;
+} catch (e) {
+  debugPrint('Operation failed: $e');
+  // Show user-friendly message
+  showSnackBar('Unable to load data. Please try again.');
+  return <EmptyResult>[];
+}
+```
+
+### 4. State Updates
+
+**Always notify listeners:**
+```dart
+void updateSomething() {
+  _something = newValue;
+  notifyListeners(); // Don't forget this!
+}
+```
+
+**Batch related updates:**
+```dart
+void updateMultipleThings() {
+  _thing1 = value1;
+  _thing2 = value2;
+  _thing3 = value3;
+  notifyListeners(); // Single notification for all changes
+}
+```
+
+---
+
+## Build & Development Setup
+
+### Prerequisites
+- **Flutter SDK**: Latest stable version
+- **Xcode**: For iOS builds (macOS only)
+- **Android Studio**: For Android builds
+- **Git**: For version control
+
+### OAuth2 Setup
+
+**Required registrations:**
+1. **Production OSM**: https://www.openstreetmap.org/oauth2/applications
+2. **Sandbox OSM**: https://master.apis.dev.openstreetmap.org/oauth2/applications
+
+**Configuration:**
+```bash
+cp lib/keys.dart.example lib/keys.dart
+# Edit keys.dart with your OAuth2 client IDs
+```
+
+### iOS Setup
+```bash
+cd ios && pod install
+```
+
+### Running
+```bash
+flutter pub get
+flutter run
+```
+
+### Testing
+```bash
+# Run all tests
+flutter test
+
+# Run with coverage
+flutter test --coverage
+```
+
+---
+
+## Code Organization
+
+```
+lib/
+├── models/              # Data classes
+│   ├── osm_camera_node.dart
+│   ├── pending_upload.dart
+│   └── node_profile.dart
+├── services/            # Business logic
+│   ├── map_data_provider.dart
+│   ├── uploader.dart
+│   └── node_cache.dart
+├── state/               # State management
+│   ├── app_state.dart
+│   ├── auth_state.dart
+│   └── upload_queue_state.dart
+├── widgets/             # UI components
+│   ├── map_view.dart
+│   ├── edit_node_sheet.dart
+│   └── map/             # Map-specific widgets
+├── screens/             # Full screens
+│   ├── home_screen.dart
+│   └── settings_screen.dart
+└── localizations/       # i18n strings
+    ├── en.json
+    ├── de.json
+    ├── es.json
+    └── fr.json
+```
+
+**Principles:**
+- **Models**: Pure data, no business logic
+- **Services**: Stateless business logic
+- **State**: Stateful coordination
+- **Widgets**: UI only, delegate to AppState
+- **Screens**: Compose widgets, handle navigation
+
+---
+
+## Debugging Tips
+
+### Common Issues
+
+**Nodes not appearing:**
+- Check zoom level (≥10 production, ≥13 sandbox)
+- Check upload mode vs expected data source
+- Check network connectivity
+- Look for console errors
+
+**Upload failures:**
+- Verify OAuth2 credentials
+- Check upload mode matches login (production vs sandbox)
+- Ensure node has required tags
+- Check network connectivity
+
+**Cache issues:**
+- Clear app data to reset cache
+- Check if offline mode is affecting behavior
+- Verify upload mode switches clear cache
+
+### Debug Logging
+
+**Enable verbose logging:**
+```dart
+debugPrint('[ComponentName] Detailed message: $data');
+```
+
+**Key areas to log:**
+- Network requests and responses
+- Cache operations
+- State transitions
+- User actions
+
+### Performance
+
+**Monitor:**
+- Memory usage during large node fetches
+- UI responsiveness during background uploads
+- Battery usage during GPS tracking
+
+---
+
+This documentation should be updated as the architecture evolves. When making significant changes, update both the relevant section here and add a brief note explaining the rationale for the change.

README.md

@@ -25,11 +25,11 @@ A comprehensive Flutter app for mapping public surveillance infrastructure with
 - **Multi-source tiles**: Switch between OpenStreetMap, Google Satellite, Esri imagery, Mapbox, and any custom providers
 - **Offline-first design**: Download a region for complete offline operation
 - **Smooth UX**: Intuitive controls, follow-me mode with GPS rotation, and gesture-friendly interactions
-- **Device visualization**: Color-coded markers showing real devices (blue), pending uploads (purple), new devices (white), edited devices (grey), and devices being edited (orange)
+- **Device visualization**: Color-coded markers showing real devices (blue), pending uploads (purple), pending edits (grey), devices being edited (orange), and pending deletions (red)
 
 ### Device Management
 - **Comprehensive profiles**: Built-in profiles for major manufacturers (Flock Safety, Motorola/Vigilant, Genetec, Leonardo/ELSAG, Neology) plus custom profile creation
-- **Editing capabilities**: Update location, direction, and tags of existing devices
+- **Full CRUD operations**: Create, edit, and delete surveillance devices
 - **Direction visualization**: Interactive field-of-view cones showing camera viewing angles
 - **Bulk operations**: Tag multiple devices efficiently with profile-based workflow
 
@@ -52,7 +52,8 @@ A comprehensive Flutter app for mapping public surveillance infrastructure with
 1. **Install** the app on iOS or Android
 2. **Enable location** permissions  
 3. **Log into OpenStreetMap**: Choose upload mode and get OAuth2 credentials
-4. **Add your first device**: Tap the "tag node" button, position the pin, set direction, select a profile, and tap submit
+4. **Add your first device**: Tap the "New Node" button, position the pin, set direction, select a profile, and tap submit
+5. **Edit or delete devices**: Tap any device marker to view details, then use Edit or Delete buttons
 
 **New to OpenStreetMap?** Visit [deflock.me](https://deflock.me) for complete setup instructions and community guidelines.
 
@@ -60,37 +61,26 @@ A comprehensive Flutter app for mapping public surveillance infrastructure with
 
 ## For Developers
 
-### Architecture Highlights
-- **Unified data provider**: All map tiles and surveillance device data route through `MapDataProvider` with pluggable remote/local sources
-- **Modular settings**: Each settings section is a separate widget for maintainability
-- **State management**: Provider pattern with clean separation of concerns
-- **Offline-first**: Network calls are optional; app functions fully offline with downloaded data and queues uploads until online
-
-### Build Setup
-**Prerequisites**: Flutter SDK, Xcode (iOS), Android Studio  
-**OAuth Setup**: Register apps at [openstreetmap.org/oauth2](https://www.openstreetmap.org/oauth2/applications) and [OSM Sandbox](https://master.apis.dev.openstreetmap.org/oauth2/applications) to get a client ID
+**See [DEVELOPER.md](DEVELOPER.md)** for comprehensive technical documentation including:
+- Architecture overview and design decisions
+- Development setup and build instructions  
+- Code organization and contribution guidelines
+- Debugging tips and troubleshooting
 
+**Quick setup:**
 ```shell
-# Basic setup
 flutter pub get
 cp lib/keys.dart.example lib/keys.dart
-# Add your OAuth2 client IDs to keys.dart
-
-# iOS additional setup
-cd ios && pod install
-
-# Run
-flutter run
+# Add OAuth2 client IDs, then: flutter run
 ```
 
 ---
 
 ## Roadmap
 
-### v1 todo/bug List
+### Current Development
 - Update offline area nodes while browsing?
-- Camera deletions
-- Optional custom icons for camera profiles
+- Optional custom icons for camera profiles  
 - Upgrade device marker design (considering nullplate's svg)
 
 ### Future Features & Wishlist

android/app/build.gradle.kts

@@ -17,6 +17,7 @@ android {
     compileOptions {
         sourceCompatibility = JavaVersion.VERSION_11
         targetCompatibility = JavaVersion.VERSION_11
+        isCoreLibraryDesugaringEnabled = true
     }
     kotlinOptions {
         jvmTarget = JavaVersion.VERSION_11.toString()
@@ -50,3 +51,7 @@ flutter {
     source = "../.."
 }
 
+dependencies {
+    coreLibraryDesugaring("com.android.tools:desugar_jdk_libs:2.0.4")
+}
+

android/app/src/main/AndroidManifest.xml

@@ -6,6 +6,9 @@
     <!-- Location permissions for blue‑dot positioning -->
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
+    
+    <!-- Notification permission for proximity alerts -->
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
 
     <application
         android:name="${applicationName}"

lib/app_state.dart

@@ -4,7 +4,7 @@ import 'package:latlong2/latlong.dart';
 
 import 'models/node_profile.dart';
 import 'models/operator_profile.dart';
-import 'models/osm_camera_node.dart';
+import 'models/osm_node.dart';
 import 'models/pending_upload.dart';
 import 'models/tile_provider.dart';
 import 'services/offline_area_service.dart';
@@ -79,6 +79,8 @@ class AppState extends ChangeNotifier {
   int get maxCameras => _settingsState.maxCameras;
   UploadMode get uploadMode => _settingsState.uploadMode;
   FollowMeMode get followMeMode => _settingsState.followMeMode;
+  bool get proximityAlertsEnabled => _settingsState.proximityAlertsEnabled;
+  int get proximityAlertDistance => _settingsState.proximityAlertDistance;
   
   // Tile provider state
   List<TileProvider> get tileProviders => _settingsState.tileProviders;
@@ -162,7 +164,7 @@ class AppState extends ChangeNotifier {
     _sessionState.startAddSession(enabledProfiles);
   }
 
-  void startEditSession(OsmCameraNode node) {
+  void startEditSession(OsmNode node) {
     _sessionState.startEditSession(node, enabledProfiles);
   }
 
@@ -218,7 +220,7 @@ class AppState extends ChangeNotifier {
     }
   }
 
-  void deleteNode(OsmCameraNode node) {
+  void deleteNode(OsmNode node) {
     _uploadQueueState.addFromNodeDeletion(node, uploadMode: uploadMode);
     _startUploader();
   }
@@ -270,6 +272,16 @@ class AppState extends ChangeNotifier {
     await _settingsState.setFollowMeMode(mode);
   }
 
+  /// Set proximity alerts enabled/disabled
+  Future<void> setProximityAlertsEnabled(bool enabled) async {
+    await _settingsState.setProximityAlertsEnabled(enabled);
+  }
+
+  /// Set proximity alert distance
+  Future<void> setProximityAlertDistance(int distance) async {
+    await _settingsState.setProximityAlertDistance(distance);
+  }
+
   // ---------- Queue Methods ----------
   void clearQueue() {
     _uploadQueueState.clearQueue();

lib/dev_config.dart

@@ -31,7 +31,7 @@ const double kAddPinYOffset = 0.0;
 
 // Client name and version for OSM uploads ("created_by" tag)
 const String kClientName = 'DeFlock';
-const String kClientVersion = '0.9.12';
+const String kClientVersion = '0.9.13';
 
 // Development/testing features - set to false for production builds
 const bool kEnableDevelopmentModes = false; // Set to false to hide sandbox/simulate modes and force production mode
@@ -46,6 +46,12 @@ const Duration kDebounceCameraRefresh = Duration(milliseconds: 500);
 const Duration kFollowMeAnimationDuration = Duration(milliseconds: 600);
 const double kMinSpeedForRotationMps = 1.0; // Minimum speed (m/s) to apply rotation
 
+// Proximity alerts configuration
+const int kProximityAlertDefaultDistance = 200; // meters
+const int kProximityAlertMinDistance = 50; // meters
+const int kProximityAlertMaxDistance = 1000; // meters
+const Duration kProximityAlertCooldown = Duration(minutes: 10); // Cooldown between alerts for same node
+
 // Last map location and settings storage
 const String kLastMapLatKey = 'last_map_latitude';
 const String kLastMapLngKey = 'last_map_longitude';

lib/localizations/de.json

@@ -90,7 +90,6 @@
     "simulate": "Simulieren",
     "productionDescription": "Hochladen in die Live-OSM-Datenbank (für alle Benutzer sichtbar)",
     "sandboxDescription": "Uploads gehen an die OSM Sandbox (sicher zum Testen, wird regelmäßig zurückgesetzt).",
-    "sandboxNote": "HINWEIS: Aufgrund von OpenStreetMap-Limitierungen werden Kameras, die an die Sandbox übermittelt werden, NICHT in der Karte dieser App angezeigt.",
     "simulateDescription": "Uploads simulieren (kontaktiert OSM-Server nicht)"
   },
   "auth": {
@@ -220,6 +219,7 @@
     "noAreasTitle": "Keine Offline-Bereiche",
     "noAreasSubtitle": "Laden Sie einen Kartenbereich für die Offline-Nutzung herunter.",
     "provider": "Anbieter",
+    "maxZoom": "Max Zoom",
     "zoomLevels": "Z{}-{}",
     "latitude": "Breite",
     "longitude": "Länge",
@@ -237,5 +237,22 @@
     "megabytes": "MB",
     "kilobytes": "KB",
     "progress": "{}%"
+  },
+  "refineTagsSheet": {
+    "title": "Tags Verfeinern",
+    "operatorProfile": "Betreiber-Profil",
+    "done": "Fertig",
+    "none": "Keine",
+    "noAdditionalOperatorTags": "Keine zusätzlichen Betreiber-Tags",
+    "additionalTags": "zusätzliche Tags",
+    "additionalTagsTitle": "Zusätzliche Tags",
+    "noTagsDefinedForProfile": "Keine Tags für dieses Betreiber-Profil definiert.",
+    "noOperatorProfiles": "Keine Betreiber-Profile definiert",
+    "noOperatorProfilesMessage": "Erstellen Sie Betreiber-Profile in den Einstellungen, um zusätzliche Tags auf Ihre Knoten-Übertragungen anzuwenden."
+  },
+  "layerSelector": {
+    "cannotChangeTileTypes": "Kachel-Typen können während des Herunterladens von Offline-Bereichen nicht geändert werden",
+    "selectMapLayer": "Kartenschicht Auswählen",
+    "noTileProvidersAvailable": "Keine Kachel-Anbieter verfügbar"
   }
 }

lib/localizations/en.json

@@ -90,7 +90,6 @@
     "simulate": "Simulate",
     "productionDescription": "Upload to the live OSM database (visible to all users)",
     "sandboxDescription": "Uploads go to the OSM Sandbox (safe for testing, resets regularly).",
-    "sandboxNote": "NOTE: Due to OpenStreetMap limitations, cameras submitted to the sandbox will NOT appear on the map in this app.",
     "simulateDescription": "Simulate uploads (does not contact OSM servers)"
   },
   "auth": {
@@ -220,6 +219,7 @@
     "noAreasTitle": "No offline areas",
     "noAreasSubtitle": "Download a map area for offline use.",
     "provider": "Provider",
+    "maxZoom": "Max zoom",
     "zoomLevels": "Z{}-{}",
     "latitude": "Lat",
     "longitude": "Lon",
@@ -237,5 +237,22 @@
     "megabytes": "MB",
     "kilobytes": "KB",
     "progress": "{}%"
+  },
+  "refineTagsSheet": {
+    "title": "Refine Tags",
+    "operatorProfile": "Operator Profile",
+    "done": "Done",
+    "none": "None",
+    "noAdditionalOperatorTags": "No additional operator tags",
+    "additionalTags": "additional tags",
+    "additionalTagsTitle": "Additional Tags",
+    "noTagsDefinedForProfile": "No tags defined for this operator profile.",
+    "noOperatorProfiles": "No operator profiles defined",
+    "noOperatorProfilesMessage": "Create operator profiles in Settings to apply additional tags to your node submissions."
+  },
+  "layerSelector": {
+    "cannotChangeTileTypes": "Cannot change tile types while downloading offline areas",
+    "selectMapLayer": "Select Map Layer",
+    "noTileProvidersAvailable": "No tile providers available"
   }
 }

lib/localizations/es.json

@@ -90,7 +90,6 @@
     "simulate": "Simular",
     "productionDescription": "Subir a la base de datos OSM en vivo (visible para todos los usuarios)",
     "sandboxDescription": "Las subidas van al Sandbox de OSM (seguro para pruebas, se reinicia regularmente).",
-    "sandboxNote": "NOTA: Debido a las limitaciones de OpenStreetMap, las cámaras enviadas al sandbox NO aparecerán en el mapa de esta aplicación.",
     "simulateDescription": "Simular subidas (no contacta servidores OSM)"
   },
   "auth": {
@@ -220,6 +219,7 @@
     "noAreasTitle": "Sin áreas sin conexión",
     "noAreasSubtitle": "Descarga un área del mapa para uso sin conexión.",
     "provider": "Proveedor",
+    "maxZoom": "Zoom máx",
     "zoomLevels": "Z{}-{}",
     "latitude": "Lat",
     "longitude": "Lon",
@@ -237,5 +237,22 @@
     "megabytes": "MB",
     "kilobytes": "KB",
     "progress": "{}%"
+  },
+  "refineTagsSheet": {
+    "title": "Refinar Etiquetas",
+    "operatorProfile": "Perfil de Operador",
+    "done": "Listo",
+    "none": "Ninguno",
+    "noAdditionalOperatorTags": "Sin etiquetas adicionales de operador",
+    "additionalTags": "etiquetas adicionales",
+    "additionalTagsTitle": "Etiquetas Adicionales",
+    "noTagsDefinedForProfile": "No hay etiquetas definidas para este perfil de operador.",
+    "noOperatorProfiles": "No hay perfiles de operador definidos",
+    "noOperatorProfilesMessage": "Cree perfiles de operador en Configuración para aplicar etiquetas adicionales a sus envíos de nodos."
+  },
+  "layerSelector": {
+    "cannotChangeTileTypes": "No se pueden cambiar los tipos de teselas mientras se descargan áreas sin conexión",
+    "selectMapLayer": "Seleccionar Capa del Mapa",
+    "noTileProvidersAvailable": "No hay proveedores de teselas disponibles"
   }
 }

lib/localizations/fr.json

@@ -90,7 +90,6 @@
     "simulate": "Simuler",
     "productionDescription": "Télécharger vers la base de données OSM en direct (visible pour tous les utilisateurs)",
     "sandboxDescription": "Les téléchargements vont vers le Sandbox OSM (sûr pour les tests, réinitialisé régulièrement).",
-    "sandboxNote": "NOTE: En raison des limitations d'OpenStreetMap, les caméras soumises au sandbox n'apparaîtront PAS sur la carte dans cette application.",
     "simulateDescription": "Simuler les téléchargements (ne contacte pas les serveurs OSM)"
   },
   "auth": {
@@ -220,6 +219,7 @@
     "noAreasTitle": "Aucune zone hors ligne",
     "noAreasSubtitle": "Téléchargez une zone de carte pour utilisation hors ligne.",
     "provider": "Fournisseur",
+    "maxZoom": "Zoom max",
     "zoomLevels": "Z{}-{}",
     "latitude": "Lat",
     "longitude": "Lon",
@@ -237,5 +237,22 @@
     "megabytes": "Mo",
     "kilobytes": "Ko",
     "progress": "{}%"
+  },
+  "refineTagsSheet": {
+    "title": "Affiner les Étiquettes",
+    "operatorProfile": "Profil d'Opérateur",
+    "done": "Terminé",
+    "none": "Aucun",
+    "noAdditionalOperatorTags": "Aucune étiquette d'opérateur supplémentaire",
+    "additionalTags": "étiquettes supplémentaires",
+    "additionalTagsTitle": "Étiquettes Supplémentaires",
+    "noTagsDefinedForProfile": "Aucune étiquette définie pour ce profil d'opérateur.",
+    "noOperatorProfiles": "Aucun profil d'opérateur défini",
+    "noOperatorProfilesMessage": "Créez des profils d'opérateur dans les Paramètres pour appliquer des étiquettes supplémentaires à vos soumissions de nœuds."
+  },
+  "layerSelector": {
+    "cannotChangeTileTypes": "Impossible de changer les types de tuiles pendant le téléchargement des zones hors ligne",
+    "selectMapLayer": "Sélectionner la Couche de Carte",
+    "noTileProvidersAvailable": "Aucun fournisseur de tuiles disponible"
   }
 }

lib/localizations/it.json

@@ -0,0 +1,258 @@
+{
+  "language": {
+    "name": "Italiano"
+  },
+  "app": {
+    "title": "DeFlock"
+  },
+  "actions": {
+    "tagNode": "Nuovo Nodo",
+    "download": "Scarica",
+    "settings": "Impostazioni",
+    "edit": "Modifica",
+    "delete": "Elimina",
+    "cancel": "Annulla",
+    "ok": "OK",
+    "close": "Chiudi",
+    "submit": "Invia",
+    "saveEdit": "Salva Modifica",
+    "clear": "Pulisci"
+  },
+  "followMe": {
+    "off": "Attiva seguimi (nord in alto)",
+    "northUp": "Attiva seguimi (rotazione)",
+    "rotating": "Disattiva seguimi"
+  },
+  "settings": {
+    "title": "Impostazioni",
+    "language": "Lingua",
+    "systemDefault": "Predefinito del Sistema",
+    "aboutInfo": "Informazioni",
+    "aboutThisApp": "Informazioni su questa App",
+    "maxNodes": "Max nodi recuperati/disegnati",
+    "maxNodesSubtitle": "Imposta un limite superiore per il numero di nodi sulla mappa (predefinito: 250).",
+    "maxNodesWarning": "Probabilmente non vuoi farlo a meno che non sei assolutamente sicuro di avere una buona ragione per farlo.",
+    "offlineMode": "Modalità Offline",
+    "offlineModeSubtitle": "Disabilita tutte le richieste di rete tranne per aree locali/offline.",
+    "offlineModeWarningTitle": "Download Attivi",
+    "offlineModeWarningMessage": "L'attivazione della modalità offline cancellerà qualsiasi download di area attivo. Vuoi continuare?",
+    "enableOfflineMode": "Attiva Modalità Offline"
+  },
+  "node": {
+    "title": "Nodo #{}",
+    "tagSheetTitle": "Tag Dispositivo di Sorveglianza",
+    "queuedForUpload": "Nodo in coda per il caricamento",
+    "editQueuedForUpload": "Modifica nodo in coda per il caricamento",
+    "deleteQueuedForUpload": "Eliminazione nodo in coda per il caricamento",
+    "confirmDeleteTitle": "Elimina Nodo",
+    "confirmDeleteMessage": "Sei sicuro di voler eliminare il nodo #{}? Questa azione non può essere annullata."
+  },
+  "addNode": {
+    "profile": "Profilo",
+    "direction": "Direzione  {}°",
+    "profileNoDirectionInfo": "Questo profilo non richiede una direzione.",
+    "mustBeLoggedIn": "Devi essere loggato per inviare nuovi nodi. Per favore accedi tramite Impostazioni.",
+    "enableSubmittableProfile": "Abilita un profilo inviabile nelle Impostazioni per inviare nuovi nodi.",
+    "profileViewOnlyWarning": "Questo profilo è solo per la visualizzazione della mappa. Per favore seleziona un profilo inviabile per inviare nuovi nodi.",
+    "refineTags": "Affina Tag",
+    "refineTagsWithProfile": "Affina Tag ({})"
+  },
+  "editNode": {
+    "title": "Modifica Nodo #{}",
+    "profile": "Profilo",
+    "direction": "Direzione  {}°",
+    "profileNoDirectionInfo": "Questo profilo non richiede una direzione.",
+    "mustBeLoggedIn": "Devi essere loggato per modificare i nodi. Per favore accedi tramite Impostazioni.",
+    "sandboxModeWarning": "Impossibile inviare modifiche di nodi di produzione alla sandbox. Passa alla modalità Produzione nelle Impostazioni per modificare i nodi.",
+    "enableSubmittableProfile": "Abilita un profilo inviabile nelle Impostazioni per modificare i nodi.",
+    "profileViewOnlyWarning": "Questo profilo è solo per la visualizzazione della mappa. Per favore seleziona un profilo inviabile per modificare i nodi.",
+    "refineTags": "Affina Tag",
+    "refineTagsWithProfile": "Affina Tag ({})"
+  },
+  "download": {
+    "title": "Scarica Area Mappa",
+    "maxZoomLevel": "Livello zoom max",
+    "storageEstimate": "Stima archiviazione:",
+    "tilesAndSize": "{} tile, {} MB",
+    "minZoom": "Zoom min:",
+    "maxRecommendedZoom": "Zoom max raccomandato: Z{}",
+    "withinTileLimit": "Entro il limite di {} tile",
+    "exceedsTileLimit": "La selezione corrente supera il limite di {} tile",
+    "offlineModeWarning": "Download disabilitati in modalità offline. Disabilita la modalità offline per scaricare nuove aree.",
+    "downloadStarted": "Download avviato! Recupero tile e telecamere...",
+    "downloadFailed": "Impossibile avviare il download: {}"
+  },
+  "uploadMode": {
+    "title": "Destinazione Upload",
+    "subtitle": "Scegli dove vengono caricate le telecamere",
+    "production": "Produzione",
+    "sandbox": "Sandbox",
+    "simulate": "Simula",
+    "productionDescription": "Carica nel database OSM dal vivo (visibile a tutti gli utenti)",
+    "sandboxDescription": "Gli upload vanno alla Sandbox OSM (sicuro per i test, si resetta regolarmente).",
+    "simulateDescription": "Simula upload (non contatta i server OSM)"
+  },
+  "auth": {
+    "loggedInAs": "Loggato come {}",
+    "loginToOSM": "Accedi a OpenStreetMap",
+    "tapToLogout": "Tocca per disconnetterti",
+    "requiredToSubmit": "Richiesto per inviare dati delle telecamere",
+    "loggedOut": "Disconnesso",
+    "testConnection": "Testa Connessione",
+    "testConnectionSubtitle": "Verifica che le credenziali OSM funzionino",
+    "connectionOK": "Connessione OK - le credenziali sono valide",
+    "connectionFailed": "Connessione fallita - per favore accedi di nuovo"
+  },
+  "queue": {
+    "pendingUploads": "Upload in sospeso: {}",
+    "simulateModeEnabled": "Modalità simulazione abilitata – upload simulati",
+    "sandboxMode": "Modalità sandbox – upload vanno alla Sandbox OSM",
+    "tapToViewQueue": "Tocca per vedere la coda",
+    "clearUploadQueue": "Pulisci Coda Upload",
+    "removeAllPending": "Rimuovi tutti i {} upload in sospeso",
+    "clearQueueTitle": "Pulisci Coda",
+    "clearQueueConfirm": "Rimuovere tutti i {} upload in sospeso?",
+    "queueCleared": "Coda pulita",
+    "uploadQueueTitle": "Coda Upload ({} elementi)",
+    "queueIsEmpty": "La coda è vuota",
+    "cameraWithIndex": "Telecamera {}",
+    "error": " (Errore)",
+    "completing": " (Completamento...)",
+    "destination": "Dest: {}",
+    "latitude": "Lat: {}",
+    "longitude": "Lon: {}",
+    "direction": "Direzione: {}°",
+    "attempts": "Tentativi: {}",
+    "uploadFailedRetry": "Upload fallito. Tocca riprova per tentare di nuovo.",
+    "retryUpload": "Riprova upload",
+    "clearAll": "Pulisci Tutto"
+  },
+  "tileProviders": {
+    "title": "Fornitori di Tile",
+    "noProvidersConfigured": "Nessun fornitore di tile configurato",
+    "tileTypesCount": "{} tipi di tile",
+    "apiKeyConfigured": "Chiave API configurata",
+    "needsApiKey": "Richiede chiave API",
+    "editProvider": "Modifica Fornitore",
+    "addProvider": "Aggiungi Fornitore",
+    "deleteProvider": "Elimina Fornitore",
+    "deleteProviderConfirm": "Sei sicuro di voler eliminare \"{}\"?",
+    "providerName": "Nome Fornitore",
+    "providerNameHint": "es., Mappe Personalizzate Inc.",
+    "providerNameRequired": "Il nome del fornitore è obbligatorio",
+    "apiKey": "Chiave API (Opzionale)",
+    "apiKeyHint": "Inserisci la chiave API se richiesta dai tipi di tile",
+    "tileTypes": "Tipi di Tile",
+    "addType": "Aggiungi Tipo",
+    "noTileTypesConfigured": "Nessun tipo di tile configurato",
+    "atLeastOneTileTypeRequired": "È richiesto almeno un tipo di tile",
+    "manageTileProviders": "Gestisci Fornitori"
+  },
+  "tileTypeEditor": {
+    "editTileType": "Modifica Tipo Tile",
+    "addTileType": "Aggiungi Tipo Tile",
+    "name": "Nome",
+    "nameHint": "es., Satellite",
+    "nameRequired": "Il nome è obbligatorio",
+    "urlTemplate": "Template URL",
+    "urlTemplateHint": "https://esempio.com/{z}/{x}/{y}.png",
+    "urlTemplateRequired": "Il template URL è obbligatorio",
+    "urlTemplatePlaceholders": "L'URL deve contenere i segnaposto {z}, {x} e {y}",
+    "attribution": "Attribuzione",
+    "attributionHint": "© Fornitore Mappe",
+    "attributionRequired": "L'attribuzione è obbligatoria",
+    "fetchPreview": "Ottieni Anteprima",
+    "previewTileLoaded": "Tile di anteprima caricato con successo",
+    "previewTileFailed": "Impossibile ottenere l'anteprima: {}",
+    "save": "Salva"
+  },
+  "profiles": {
+    "nodeProfiles": "Profili Nodo",
+    "newProfile": "Nuovo Profilo",
+    "builtIn": "Integrato",
+    "custom": "Personalizzato",
+    "view": "Visualizza",
+    "deleteProfile": "Elimina Profilo",
+    "deleteProfileConfirm": "Sei sicuro di voler eliminare \"{}\"?",
+    "profileDeleted": "Profilo eliminato"
+  },
+  "mapTiles": {
+    "title": "Tile Mappa",
+    "manageProviders": "Gestisci Fornitori"
+  },
+  "profileEditor": {
+    "viewProfile": "Visualizza Profilo",
+    "newProfile": "Nuovo Profilo",
+    "editProfile": "Modifica Profilo",
+    "profileName": "Nome profilo",
+    "profileNameHint": "es., Telecamera ALPR Personalizzata",
+    "profileNameRequired": "Il nome del profilo è obbligatorio",
+    "requiresDirection": "Richiede Direzione",
+    "requiresDirectionSubtitle": "Se le telecamere di questo tipo necessitano di un tag direzione",
+    "submittable": "Inviabile",
+    "submittableSubtitle": "Se questo profilo può essere usato per invii di telecamere",
+    "osmTags": "Tag OSM",
+    "addTag": "Aggiungi Tag",
+    "saveProfile": "Salva Profilo",
+    "keyHint": "chiave",
+    "valueHint": "valore",
+    "atLeastOneTagRequired": "È richiesto almeno un tag",
+    "profileSaved": "Profilo \"{}\" salvato"
+  },
+  "operatorProfileEditor": {
+    "newOperatorProfile": "Nuovo Profilo Operatore",
+    "editOperatorProfile": "Modifica Profilo Operatore", 
+    "operatorName": "Nome operatore",
+    "operatorNameHint": "es., Dipartimento di Polizia di Austin",
+    "operatorNameRequired": "Il nome dell'operatore è obbligatorio",
+    "operatorProfileSaved": "Profilo operatore \"{}\" salvato"
+  },
+  "operatorProfiles": {
+    "title": "Profili Operatore",
+    "noProfilesMessage": "Nessun profilo operatore definito. Creane uno per applicare tag operatore agli invii di nodi.",
+    "tagsCount": "{} tag",
+    "deleteOperatorProfile": "Elimina Profilo Operatore",
+    "deleteOperatorProfileConfirm": "Sei sicuro di voler eliminare \"{}\"?",
+    "operatorProfileDeleted": "Profilo operatore eliminato"
+  },
+  "offlineAreas": {
+    "noAreasTitle": "Nessuna area offline",
+    "noAreasSubtitle": "Scarica un'area mappa per l'uso offline.",
+    "provider": "Fornitore",
+    "maxZoom": "Zoom max",
+    "zoomLevels": "Z{}-{}",
+    "latitude": "Lat",
+    "longitude": "Lon",
+    "tiles": "Tile",
+    "size": "Dimensione",
+    "cameras": "Telecamere",
+    "areaIdFallback": "Area {}...",
+    "renameArea": "Rinomina area",
+    "refreshWorldTiles": "Aggiorna/ri-scarica tile mondiali",
+    "deleteOfflineArea": "Elimina area offline",
+    "cancelDownload": "Annulla download",
+    "renameAreaDialogTitle": "Rinomina Area Offline",
+    "areaNameLabel": "Nome Area",
+    "renameButton": "Rinomina",
+    "megabytes": "MB",
+    "kilobytes": "KB",
+    "progress": "{}%"
+  },
+  "refineTagsSheet": {
+    "title": "Affina Tag",
+    "operatorProfile": "Profilo Operatore",
+    "done": "Fatto",
+    "none": "Nessuno",
+    "noAdditionalOperatorTags": "Nessun tag operatore aggiuntivo",
+    "additionalTags": "tag aggiuntivi",
+    "additionalTagsTitle": "Tag Aggiuntivi",
+    "noTagsDefinedForProfile": "Nessun tag definito per questo profilo operatore.",
+    "noOperatorProfiles": "Nessun profilo operatore definito",
+    "noOperatorProfilesMessage": "Crea profili operatore nelle Impostazioni per applicare tag aggiuntivi ai tuoi invii di nodi."
+  },
+  "layerSelector": {
+    "cannotChangeTileTypes": "Impossibile cambiare tipi di tile durante il download di aree offline",
+    "selectMapLayer": "Seleziona Livello Mappa",
+    "noTileProvidersAvailable": "Nessun fornitore di tile disponibile"
+  }
+}

lib/localizations/pt.json

@@ -0,0 +1,258 @@
+{
+  "language": {
+    "name": "Português"
+  },
+  "app": {
+    "title": "DeFlock"
+  },
+  "actions": {
+    "tagNode": "Novo Nó",
+    "download": "Baixar",
+    "settings": "Configurações",
+    "edit": "Editar",
+    "delete": "Excluir",
+    "cancel": "Cancelar",
+    "ok": "OK",
+    "close": "Fechar",
+    "submit": "Enviar",
+    "saveEdit": "Salvar Edição",
+    "clear": "Limpar"
+  },
+  "followMe": {
+    "off": "Ativar seguir-me (norte para cima)",
+    "northUp": "Ativar seguir-me (rotação)",
+    "rotating": "Desativar seguir-me"
+  },
+  "settings": {
+    "title": "Configurações",
+    "language": "Idioma",
+    "systemDefault": "Padrão do Sistema",
+    "aboutInfo": "Sobre / Informações",
+    "aboutThisApp": "Sobre este App",
+    "maxNodes": "Máx. de nós obtidos/desenhados",
+    "maxNodesSubtitle": "Definir um limite superior para o número de nós no mapa (padrão: 250).",
+    "maxNodesWarning": "Você provavelmente não quer fazer isso a menos que tenha certeza absoluta de que tem uma boa razão para isso.",
+    "offlineMode": "Modo Offline",
+    "offlineModeSubtitle": "Desabilitar todas as requisições de rede exceto para áreas locais/offline.",
+    "offlineModeWarningTitle": "Downloads Ativos",
+    "offlineModeWarningMessage": "Ativar o modo offline cancelará qualquer download de área ativo. Deseja continuar?",
+    "enableOfflineMode": "Ativar Modo Offline"
+  },
+  "node": {
+    "title": "Nó #{}",
+    "tagSheetTitle": "Tags do Dispositivo de Vigilância",
+    "queuedForUpload": "Nó na fila para envio",
+    "editQueuedForUpload": "Edição de nó na fila para envio",
+    "deleteQueuedForUpload": "Exclusão de nó na fila para envio",
+    "confirmDeleteTitle": "Excluir Nó",
+    "confirmDeleteMessage": "Tem certeza de que deseja excluir o nó #{}? Esta ação não pode ser desfeita."
+  },
+  "addNode": {
+    "profile": "Perfil",
+    "direction": "Direção  {}°",
+    "profileNoDirectionInfo": "Este perfil não requer uma direção.",
+    "mustBeLoggedIn": "Você deve estar logado para enviar novos nós. Por favor, faça login via Configurações.",
+    "enableSubmittableProfile": "Ative um perfil enviável nas Configurações para enviar novos nós.",
+    "profileViewOnlyWarning": "Este perfil é apenas para visualização do mapa. Por favor, selecione um perfil enviável para enviar novos nós.",
+    "refineTags": "Refinar Tags",
+    "refineTagsWithProfile": "Refinar Tags ({})"
+  },
+  "editNode": {
+    "title": "Editar Nó #{}",
+    "profile": "Perfil",
+    "direction": "Direção  {}°",
+    "profileNoDirectionInfo": "Este perfil não requer uma direção.",
+    "mustBeLoggedIn": "Você deve estar logado para editar nós. Por favor, faça login via Configurações.",
+    "sandboxModeWarning": "Não é possível enviar edições de nós de produção para o sandbox. Mude para o modo Produção nas Configurações para editar nós.",
+    "enableSubmittableProfile": "Ative um perfil enviável nas Configurações para editar nós.",
+    "profileViewOnlyWarning": "Este perfil é apenas para visualização do mapa. Por favor, selecione um perfil enviável para editar nós.",
+    "refineTags": "Refinar Tags",
+    "refineTagsWithProfile": "Refinar Tags ({})"
+  },
+  "download": {
+    "title": "Baixar Área do Mapa",
+    "maxZoomLevel": "Nível máx. de zoom",
+    "storageEstimate": "Estimativa de armazenamento:",
+    "tilesAndSize": "{} tiles, {} MB",
+    "minZoom": "Zoom mín.:",
+    "maxRecommendedZoom": "Zoom máx. recomendado: Z{}",
+    "withinTileLimit": "Dentro do limite de {} tiles",
+    "exceedsTileLimit": "A seleção atual excede o limite de {} tiles",
+    "offlineModeWarning": "Downloads desabilitados no modo offline. Desative o modo offline para baixar novas áreas.",
+    "downloadStarted": "Download iniciado! Buscando tiles e câmeras...",
+    "downloadFailed": "Falha ao iniciar o download: {}"
+  },
+  "uploadMode": {
+    "title": "Destino do Upload",
+    "subtitle": "Escolha onde as câmeras são enviadas",
+    "production": "Produção",
+    "sandbox": "Sandbox",
+    "simulate": "Simular",
+    "productionDescription": "Enviar para o banco de dados OSM ao vivo (visível para todos os usuários)",
+    "sandboxDescription": "Uploads vão para o Sandbox OSM (seguro para testes, redefine regularmente).",
+    "simulateDescription": "Simular uploads (não contacta servidores OSM)"
+  },
+  "auth": {
+    "loggedInAs": "Logado como {}",
+    "loginToOSM": "Fazer login no OpenStreetMap",
+    "tapToLogout": "Toque para sair",
+    "requiredToSubmit": "Necessário para enviar dados de câmeras",
+    "loggedOut": "Deslogado",
+    "testConnection": "Testar Conexão",
+    "testConnectionSubtitle": "Verificar se as credenciais OSM estão funcionando",
+    "connectionOK": "Conexão OK - credenciais são válidas",
+    "connectionFailed": "Conexão falhou - por favor, faça login novamente"
+  },
+  "queue": {
+    "pendingUploads": "Uploads pendentes: {}",
+    "simulateModeEnabled": "Modo simulação ativado – uploads simulados",
+    "sandboxMode": "Modo sandbox – uploads vão para o Sandbox OSM",
+    "tapToViewQueue": "Toque para ver a fila",
+    "clearUploadQueue": "Limpar Fila de Upload",
+    "removeAllPending": "Remover todos os {} uploads pendentes",
+    "clearQueueTitle": "Limpar Fila",
+    "clearQueueConfirm": "Remover todos os {} uploads pendentes?",
+    "queueCleared": "Fila limpa",
+    "uploadQueueTitle": "Fila de Upload ({} itens)",
+    "queueIsEmpty": "A fila está vazia",
+    "cameraWithIndex": "Câmera {}",
+    "error": " (Erro)",
+    "completing": " (Completando...)",
+    "destination": "Dest: {}",
+    "latitude": "Lat: {}",
+    "longitude": "Lon: {}",
+    "direction": "Direção: {}°",
+    "attempts": "Tentativas: {}",
+    "uploadFailedRetry": "Upload falhou. Toque em tentar novamente para tentar novamente.",
+    "retryUpload": "Tentar upload novamente",
+    "clearAll": "Limpar Tudo"
+  },
+  "tileProviders": {
+    "title": "Provedores de Tiles",
+    "noProvidersConfigured": "Nenhum provedor de tiles configurado",
+    "tileTypesCount": "{} tipos de tiles",
+    "apiKeyConfigured": "Chave API configurada",
+    "needsApiKey": "Precisa de chave API",
+    "editProvider": "Editar Provedor",
+    "addProvider": "Adicionar Provedor",
+    "deleteProvider": "Excluir Provedor",
+    "deleteProviderConfirm": "Tem certeza de que deseja excluir \"{}\"?",
+    "providerName": "Nome do Provedor",
+    "providerNameHint": "ex., Mapas Personalizados Inc.",
+    "providerNameRequired": "Nome do provedor é obrigatório",
+    "apiKey": "Chave API (Opcional)",
+    "apiKeyHint": "Insira a chave API se necessária pelos tipos de tiles",
+    "tileTypes": "Tipos de Tiles",
+    "addType": "Adicionar Tipo",
+    "noTileTypesConfigured": "Nenhum tipo de tile configurado",
+    "atLeastOneTileTypeRequired": "Pelo menos um tipo de tile é obrigatório",
+    "manageTileProviders": "Gerenciar Provedores"
+  },
+  "tileTypeEditor": {
+    "editTileType": "Editar Tipo de Tile",
+    "addTileType": "Adicionar Tipo de Tile",
+    "name": "Nome",
+    "nameHint": "ex., Satélite",
+    "nameRequired": "Nome é obrigatório",
+    "urlTemplate": "Modelo de URL",
+    "urlTemplateHint": "https://exemplo.com/{z}/{x}/{y}.png",
+    "urlTemplateRequired": "Modelo de URL é obrigatório",
+    "urlTemplatePlaceholders": "URL deve conter os marcadores {z}, {x} e {y}",
+    "attribution": "Atribuição",
+    "attributionHint": "© Provedor de Mapas",
+    "attributionRequired": "Atribuição é obrigatória",
+    "fetchPreview": "Buscar Preview",
+    "previewTileLoaded": "Tile de preview carregado com sucesso",
+    "previewTileFailed": "Falha ao buscar preview: {}",
+    "save": "Salvar"
+  },
+  "profiles": {
+    "nodeProfiles": "Perfis de Nó",
+    "newProfile": "Novo Perfil",
+    "builtIn": "Integrado",
+    "custom": "Personalizado",
+    "view": "Ver",
+    "deleteProfile": "Excluir Perfil",
+    "deleteProfileConfirm": "Tem certeza de que deseja excluir \"{}\"?",
+    "profileDeleted": "Perfil excluído"
+  },
+  "mapTiles": {
+    "title": "Tiles do Mapa",
+    "manageProviders": "Gerenciar Provedores"
+  },
+  "profileEditor": {
+    "viewProfile": "Ver Perfil",
+    "newProfile": "Novo Perfil",
+    "editProfile": "Editar Perfil",
+    "profileName": "Nome do perfil",
+    "profileNameHint": "ex., Câmera ALPR Personalizada",
+    "profileNameRequired": "Nome do perfil é obrigatório",
+    "requiresDirection": "Requer Direção",
+    "requiresDirectionSubtitle": "Se câmeras deste tipo precisam de uma tag de direção",
+    "submittable": "Enviável",
+    "submittableSubtitle": "Se este perfil pode ser usado para envios de câmeras",
+    "osmTags": "Tags OSM",
+    "addTag": "Adicionar Tag",
+    "saveProfile": "Salvar Perfil",
+    "keyHint": "chave",
+    "valueHint": "valor",
+    "atLeastOneTagRequired": "Pelo menos uma tag é obrigatória",
+    "profileSaved": "Perfil \"{}\" salvo"
+  },
+  "operatorProfileEditor": {
+    "newOperatorProfile": "Novo Perfil de Operador",
+    "editOperatorProfile": "Editar Perfil de Operador", 
+    "operatorName": "Nome do operador",
+    "operatorNameHint": "ex., Departamento de Polícia de Austin",
+    "operatorNameRequired": "Nome do operador é obrigatório",
+    "operatorProfileSaved": "Perfil de operador \"{}\" salvo"
+  },
+  "operatorProfiles": {
+    "title": "Perfis de Operador",
+    "noProfilesMessage": "Nenhum perfil de operador definido. Crie um para aplicar tags de operador aos envios de nós.",
+    "tagsCount": "{} tags",
+    "deleteOperatorProfile": "Excluir Perfil de Operador",
+    "deleteOperatorProfileConfirm": "Tem certeza de que deseja excluir \"{}\"?",
+    "operatorProfileDeleted": "Perfil de operador excluído"
+  },
+  "offlineAreas": {
+    "noAreasTitle": "Nenhuma área offline",
+    "noAreasSubtitle": "Baixe uma área do mapa para uso offline.",
+    "provider": "Provedor",
+    "maxZoom": "Zoom máx",
+    "zoomLevels": "Z{}-{}",
+    "latitude": "Lat",
+    "longitude": "Lon",
+    "tiles": "Tiles",
+    "size": "Tamanho",
+    "cameras": "Câmeras",
+    "areaIdFallback": "Área {}...",
+    "renameArea": "Renomear área",
+    "refreshWorldTiles": "Atualizar/rebaixar tiles mundiais",
+    "deleteOfflineArea": "Excluir área offline",
+    "cancelDownload": "Cancelar download",
+    "renameAreaDialogTitle": "Renomear Área Offline",
+    "areaNameLabel": "Nome da Área",
+    "renameButton": "Renomear",
+    "megabytes": "MB",
+    "kilobytes": "KB",
+    "progress": "{}%"
+  },
+  "refineTagsSheet": {
+    "title": "Refinar Tags",
+    "operatorProfile": "Perfil de Operador",
+    "done": "Concluído",
+    "none": "Nenhum",
+    "noAdditionalOperatorTags": "Nenhuma tag adicional de operador",
+    "additionalTags": "tags adicionais",
+    "additionalTagsTitle": "Tags Adicionais",
+    "noTagsDefinedForProfile": "Nenhuma tag definida para este perfil de operador.",
+    "noOperatorProfiles": "Nenhum perfil de operador definido",
+    "noOperatorProfilesMessage": "Crie perfis de operador nas Configurações para aplicar tags adicionais aos seus envios de nós."
+  },
+  "layerSelector": {
+    "cannotChangeTileTypes": "Não é possível alterar tipos de tiles durante o download de áreas offline",
+    "selectMapLayer": "Selecionar Camada do Mapa",
+    "noTileProvidersAvailable": "Nenhum provedor de tiles disponível"
+  }
+}

lib/localizations/zh.json

@@ -0,0 +1,258 @@
+{
+  "language": {
+    "name": "中文"
+  },
+  "app": {
+    "title": "DeFlock"
+  },
+  "actions": {
+    "tagNode": "新建节点",
+    "download": "下载",
+    "settings": "设置",
+    "edit": "编辑",
+    "delete": "删除",
+    "cancel": "取消",
+    "ok": "确定",
+    "close": "关闭",
+    "submit": "提交",
+    "saveEdit": "保存编辑",
+    "clear": "清空"
+  },
+  "followMe": {
+    "off": "启用跟随模式（北向上）",
+    "northUp": "启用跟随模式（旋转）",
+    "rotating": "禁用跟随模式"
+  },
+  "settings": {
+    "title": "设置",
+    "language": "语言",
+    "systemDefault": "系统默认",
+    "aboutInfo": "关于 / 信息",
+    "aboutThisApp": "关于此应用",
+    "maxNodes": "最大节点获取/绘制数",
+    "maxNodesSubtitle": "设置地图上节点数量的上限（默认：250）。",
+    "maxNodesWarning": "除非您确定有充分的理由，否则您可能不想这样做。",
+    "offlineMode": "离线模式",
+    "offlineModeSubtitle": "禁用除本地/离线区域外的所有网络请求。",
+    "offlineModeWarningTitle": "活动下载",
+    "offlineModeWarningMessage": "启用离线模式将取消任何活动的区域下载。您要继续吗？",
+    "enableOfflineMode": "启用离线模式"
+  },
+  "node": {
+    "title": "节点 #{}",
+    "tagSheetTitle": "监控设备标签",
+    "queuedForUpload": "节点已排队上传",
+    "editQueuedForUpload": "节点编辑已排队上传",
+    "deleteQueuedForUpload": "节点删除已排队上传",
+    "confirmDeleteTitle": "删除节点",
+    "confirmDeleteMessage": "您确定要删除节点 #{} 吗？此操作无法撤销。"
+  },
+  "addNode": {
+    "profile": "配置文件",
+    "direction": "方向  {}°",
+    "profileNoDirectionInfo": "此配置文件不需要方向。",
+    "mustBeLoggedIn": "您必须登录才能提交新节点。请通过设置登录。",
+    "enableSubmittableProfile": "在设置中启用可提交的配置文件以提交新节点。",
+    "profileViewOnlyWarning": "此配置文件仅用于地图查看。请选择可提交的配置文件来提交新节点。",
+    "refineTags": "细化标签",
+    "refineTagsWithProfile": "细化标签（{}）"
+  },
+  "editNode": {
+    "title": "编辑节点 #{}",
+    "profile": "配置文件",
+    "direction": "方向  {}°",
+    "profileNoDirectionInfo": "此配置文件不需要方向。",
+    "mustBeLoggedIn": "您必须登录才能编辑节点。请通过设置登录。",
+    "sandboxModeWarning": "无法将生产节点的编辑提交到沙盒。在设置中切换到生产模式以编辑节点。",
+    "enableSubmittableProfile": "在设置中启用可提交的配置文件以编辑节点。",
+    "profileViewOnlyWarning": "此配置文件仅用于地图查看。请选择可提交的配置文件来编辑节点。",
+    "refineTags": "细化标签",
+    "refineTagsWithProfile": "细化标签（{}）"
+  },
+  "download": {
+    "title": "下载地图区域",
+    "maxZoomLevel": "最大缩放级别",
+    "storageEstimate": "存储估算：",
+    "tilesAndSize": "{} 瓦片，{} MB",
+    "minZoom": "最小缩放：",
+    "maxRecommendedZoom": "最大推荐缩放：Z{}",
+    "withinTileLimit": "在 {} 瓦片限制内",
+    "exceedsTileLimit": "当前选择超出 {} 瓦片限制",
+    "offlineModeWarning": "离线模式下禁用下载。禁用离线模式以下载新区域。",
+    "downloadStarted": "下载已开始！正在获取瓦片和摄像头...",
+    "downloadFailed": "启动下载失败：{}"
+  },
+  "uploadMode": {
+    "title": "上传目标",
+    "subtitle": "选择摄像头上传位置",
+    "production": "生产环境",
+    "sandbox": "沙盒",
+    "simulate": "模拟",
+    "productionDescription": "上传到实时 OSM 数据库（对所有用户可见）",
+    "sandboxDescription": "上传到 OSM 沙盒（测试安全，定期重置）。",
+    "simulateDescription": "模拟上传（不联系 OSM 服务器）"
+  },
+  "auth": {
+    "loggedInAs": "已登录为 {}",
+    "loginToOSM": "登录 OpenStreetMap",
+    "tapToLogout": "点击登出",
+    "requiredToSubmit": "提交摄像头数据所需",
+    "loggedOut": "已登出",
+    "testConnection": "测试连接",
+    "testConnectionSubtitle": "验证 OSM 凭据是否有效",
+    "connectionOK": "连接正常 - 凭据有效",
+    "connectionFailed": "连接失败 - 请重新登录"
+  },
+  "queue": {
+    "pendingUploads": "待上传：{}",
+    "simulateModeEnabled": "模拟模式已启用 – 上传已模拟",
+    "sandboxMode": "沙盒模式 – 上传到 OSM 沙盒",
+    "tapToViewQueue": "点击查看队列",
+    "clearUploadQueue": "清空上传队列",
+    "removeAllPending": "移除所有 {} 个待上传项",
+    "clearQueueTitle": "清空队列",
+    "clearQueueConfirm": "移除所有 {} 个待上传项？",
+    "queueCleared": "队列已清空",
+    "uploadQueueTitle": "上传队列（{} 项）",
+    "queueIsEmpty": "队列为空",
+    "cameraWithIndex": "摄像头 {}",
+    "error": "（错误）",
+    "completing": "（完成中...）",
+    "destination": "目标：{}",
+    "latitude": "纬度：{}",
+    "longitude": "经度：{}",
+    "direction": "方向：{}°",
+    "attempts": "尝试次数：{}",
+    "uploadFailedRetry": "上传失败。点击重试再次尝试。",
+    "retryUpload": "重试上传",
+    "clearAll": "全部清空"
+  },
+  "tileProviders": {
+    "title": "瓦片提供商",
+    "noProvidersConfigured": "未配置瓦片提供商",
+    "tileTypesCount": "{} 种瓦片类型",
+    "apiKeyConfigured": "API 密钥已配置",
+    "needsApiKey": "需要 API 密钥",
+    "editProvider": "编辑提供商",
+    "addProvider": "添加提供商",
+    "deleteProvider": "删除提供商",
+    "deleteProviderConfirm": "您确定要删除 \"{}\" 吗？",
+    "providerName": "提供商名称",
+    "providerNameHint": "例如，自定义地图公司",
+    "providerNameRequired": "提供商名称为必填项",
+    "apiKey": "API 密钥（可选）",
+    "apiKeyHint": "如果瓦片类型需要，请输入 API 密钥",
+    "tileTypes": "瓦片类型",
+    "addType": "添加类型",
+    "noTileTypesConfigured": "未配置瓦片类型",
+    "atLeastOneTileTypeRequired": "至少需要一种瓦片类型",
+    "manageTileProviders": "管理提供商"
+  },
+  "tileTypeEditor": {
+    "editTileType": "编辑瓦片类型",
+    "addTileType": "添加瓦片类型",
+    "name": "名称",
+    "nameHint": "例如，卫星",
+    "nameRequired": "名称为必填项",
+    "urlTemplate": "URL 模板",
+    "urlTemplateHint": "https://example.com/{z}/{x}/{y}.png",
+    "urlTemplateRequired": "URL 模板为必填项",
+    "urlTemplatePlaceholders": "URL 必须包含 {z}、{x} 和 {y} 占位符",
+    "attribution": "归属",
+    "attributionHint": "© 地图提供商",
+    "attributionRequired": "归属为必填项",
+    "fetchPreview": "获取预览",
+    "previewTileLoaded": "预览瓦片加载成功",
+    "previewTileFailed": "获取预览失败：{}",
+    "save": "保存"
+  },
+  "profiles": {
+    "nodeProfiles": "节点配置文件",
+    "newProfile": "新建配置文件",
+    "builtIn": "内置",
+    "custom": "自定义",
+    "view": "查看",
+    "deleteProfile": "删除配置文件",
+    "deleteProfileConfirm": "您确定要删除 \"{}\" 吗？",
+    "profileDeleted": "配置文件已删除"
+  },
+  "mapTiles": {
+    "title": "地图瓦片",
+    "manageProviders": "管理提供商"
+  },
+  "profileEditor": {
+    "viewProfile": "查看配置文件",
+    "newProfile": "新建配置文件",
+    "editProfile": "编辑配置文件",
+    "profileName": "配置文件名称",
+    "profileNameHint": "例如，自定义 ALPR 摄像头",
+    "profileNameRequired": "配置文件名称为必填项",
+    "requiresDirection": "需要方向",
+    "requiresDirectionSubtitle": "此类型的摄像头是否需要方向标签",
+    "submittable": "可提交",
+    "submittableSubtitle": "此配置文件是否可用于摄像头提交",
+    "osmTags": "OSM 标签",
+    "addTag": "添加标签",
+    "saveProfile": "保存配置文件",
+    "keyHint": "键",
+    "valueHint": "值",
+    "atLeastOneTagRequired": "至少需要一个标签",
+    "profileSaved": "配置文件 \"{}\" 已保存"
+  },
+  "operatorProfileEditor": {
+    "newOperatorProfile": "新建运营商配置文件",
+    "editOperatorProfile": "编辑运营商配置文件", 
+    "operatorName": "运营商名称",
+    "operatorNameHint": "例如，奥斯汀警察局",
+    "operatorNameRequired": "运营商名称为必填项",
+    "operatorProfileSaved": "运营商配置文件 \"{}\" 已保存"
+  },
+  "operatorProfiles": {
+    "title": "运营商配置文件",
+    "noProfilesMessage": "未定义运营商配置文件。创建一个以将运营商标签应用于节点提交。",
+    "tagsCount": "{} 个标签",
+    "deleteOperatorProfile": "删除运营商配置文件",
+    "deleteOperatorProfileConfirm": "您确定要删除 \"{}\" 吗？",
+    "operatorProfileDeleted": "运营商配置文件已删除"
+  },
+  "offlineAreas": {
+    "noAreasTitle": "无离线区域",
+    "noAreasSubtitle": "下载地图区域以供离线使用。",
+    "provider": "提供商",
+    "maxZoom": "最大缩放",
+    "zoomLevels": "Z{}-{}",
+    "latitude": "纬度",
+    "longitude": "经度",
+    "tiles": "瓦片",
+    "size": "大小",
+    "cameras": "摄像头",
+    "areaIdFallback": "区域 {}...",
+    "renameArea": "重命名区域",
+    "refreshWorldTiles": "刷新/重新下载世界瓦片",
+    "deleteOfflineArea": "删除离线区域",
+    "cancelDownload": "取消下载",
+    "renameAreaDialogTitle": "重命名离线区域",
+    "areaNameLabel": "区域名称",
+    "renameButton": "重命名",
+    "megabytes": "MB",
+    "kilobytes": "KB",
+    "progress": "{}%"
+  },
+  "refineTagsSheet": {
+    "title": "细化标签",
+    "operatorProfile": "运营商配置文件",
+    "done": "完成",
+    "none": "无",
+    "noAdditionalOperatorTags": "无额外运营商标签",
+    "additionalTags": "额外标签",
+    "additionalTagsTitle": "额外标签",
+    "noTagsDefinedForProfile": "此运营商配置文件未定义标签。",
+    "noOperatorProfiles": "未定义运营商配置文件",
+    "noOperatorProfilesMessage": "在设置中创建运营商配置文件，以将额外标签应用于您的节点提交。"
+  },
+  "layerSelector": {
+    "cannotChangeTileTypes": "在下载离线区域时无法更改瓦片类型",
+    "selectMapLayer": "选择地图图层",
+    "noTileProvidersAvailable": "无可用瓦片提供商"
+  }
+}

lib/models/osm_node.dart

@@ -1,11 +1,11 @@
 import 'package:latlong2/latlong.dart';
 
-class OsmCameraNode {
+class OsmNode {
   final int id;
   final LatLng coord;
   final Map<String, String> tags;
 
-  OsmCameraNode({
+  OsmNode({
     required this.id,
     required this.coord,
     required this.tags,
@@ -18,14 +18,14 @@ class OsmCameraNode {
     'tags': tags,
   };
 
-  factory OsmCameraNode.fromJson(Map<String, dynamic> json) {
+  factory OsmNode.fromJson(Map<String, dynamic> json) {
     final tags = <String, String>{};
     if (json['tags'] != null) {
       (json['tags'] as Map<String, dynamic>).forEach((k, v) {
         tags[k.toString()] = v.toString();
       });
     }
-    return OsmCameraNode(
+    return OsmNode(
       id: json['id'] is int ? json['id'] as int : int.tryParse(json['id'].toString()) ?? 0,
       coord: LatLng((json['lat'] as num).toDouble(), (json['lon'] as num).toDouble()),
       tags: tags,
@@ -51,5 +51,4 @@ class OsmCameraNode {
     final normalized = ((val % 360) + 360) % 360;
     return normalized;
   }
-}
-
+}

lib/screens/settings_screen.dart

@@ -8,6 +8,7 @@ import 'settings_screen_sections/offline_areas_section.dart';
 import 'settings_screen_sections/offline_mode_section.dart';
 import 'settings_screen_sections/about_section.dart';
 import 'settings_screen_sections/max_nodes_section.dart';
+import 'settings_screen_sections/proximity_alerts_section.dart';
 import 'settings_screen_sections/tile_provider_section.dart';
 import 'settings_screen_sections/language_section.dart';
 import '../services/localization_service.dart';
@@ -40,6 +41,8 @@ class SettingsScreen extends StatelessWidget {
             const Divider(),
             const MaxNodesSection(),
             const Divider(),
+            const ProximityAlertsSection(),
+            const Divider(),
             const TileProviderSection(),
             const Divider(),
             const OfflineModeSection(),

lib/screens/settings_screen_sections/offline_areas_section.dart

@@ -49,7 +49,7 @@ class _OfflineAreasSectionState extends State<OfflineAreasSection> {
                 : '--';
                 
             String subtitle = '${locService.t('offlineAreas.provider')}: ${area.tileProviderDisplay}\n' +
-                'Max zoom: Z${area.maxZoom}' + '\n' +
+                '${locService.t('offlineAreas.maxZoom')}: Z${area.maxZoom}' + '\n' +
                 '${locService.t('offlineAreas.latitude')}: ${area.bounds.southWest.latitude.toStringAsFixed(3)}, ${area.bounds.southWest.longitude.toStringAsFixed(3)}\n' +
                 '${locService.t('offlineAreas.latitude')}: ${area.bounds.northEast.latitude.toStringAsFixed(3)}, ${area.bounds.northEast.longitude.toStringAsFixed(3)}';
                 

lib/screens/settings_screen_sections/proximity_alerts_section.dart

@@ -0,0 +1,218 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:provider/provider.dart';
+
+import '../../app_state.dart';
+import '../../services/localization_service.dart';
+import '../../services/proximity_alert_service.dart';
+import '../../dev_config.dart';
+
+/// Settings section for proximity alerts configuration
+/// Follows brutalist principles: simple, explicit UI that matches existing patterns
+class ProximityAlertsSection extends StatefulWidget {
+  const ProximityAlertsSection({super.key});
+
+  @override
+  State<ProximityAlertsSection> createState() => _ProximityAlertsSectionState();
+}
+
+class _ProximityAlertsSectionState extends State<ProximityAlertsSection> {
+  late final TextEditingController _distanceController;
+  bool _notificationsEnabled = false;
+  bool _checkingPermissions = false;
+
+  @override
+  void initState() {
+    super.initState();
+    final appState = context.read<AppState>();
+    _distanceController = TextEditingController(
+      text: appState.proximityAlertDistance.toString(),
+    );
+    _checkNotificationPermissions();
+  }
+  
+  Future<void> _checkNotificationPermissions() async {
+    setState(() {
+      _checkingPermissions = true;
+    });
+    
+    final enabled = await ProximityAlertService().areNotificationsEnabled();
+    
+    if (mounted) {
+      setState(() {
+        _notificationsEnabled = enabled;
+        _checkingPermissions = false;
+      });
+    }
+  }
+  
+  Future<void> _requestNotificationPermissions() async {
+    setState(() {
+      _checkingPermissions = true;
+    });
+    
+    final enabled = await ProximityAlertService().requestNotificationPermissions();
+    
+    if (mounted) {
+      setState(() {
+        _notificationsEnabled = enabled;
+        _checkingPermissions = false;
+      });
+    }
+  }
+
+  @override
+  void dispose() {
+    _distanceController.dispose();
+    super.dispose();
+  }
+
+  void _updateDistance(AppState appState) {
+    final text = _distanceController.text.trim();
+    final distance = int.tryParse(text);
+    if (distance != null) {
+      appState.setProximityAlertDistance(distance);
+    } else {
+      // Reset to current value if invalid
+      _distanceController.text = appState.proximityAlertDistance.toString();
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Consumer<AppState>(
+      builder: (context, appState, child) {
+        return Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Text(
+              'Proximity Alerts',
+              style: Theme.of(context).textTheme.titleMedium?.copyWith(
+                fontWeight: FontWeight.bold,
+              ),
+            ),
+            const SizedBox(height: 8),
+            
+            // Enable/disable toggle
+            SwitchListTile(
+              title: const Text('Enable proximity alerts'),
+              subtitle: Text(
+                'Get notified when approaching surveillance devices\n'
+                'Uses extra battery for continuous location monitoring\n'
+                '${_notificationsEnabled ? "✓ Notifications enabled" : "⚠ Notifications disabled"}',
+                style: const TextStyle(fontSize: 12),
+              ),
+              value: appState.proximityAlertsEnabled,
+              onChanged: (enabled) {
+                appState.setProximityAlertsEnabled(enabled);
+                if (enabled && !_notificationsEnabled) {
+                  // Automatically try to request permissions when enabling
+                  _requestNotificationPermissions();
+                }
+              },
+              contentPadding: EdgeInsets.zero,
+            ),
+            
+            // Notification permissions section (only show when proximity alerts are enabled)
+            if (appState.proximityAlertsEnabled && !_notificationsEnabled && !_checkingPermissions) ...[
+              const SizedBox(height: 8),
+              Container(
+                padding: const EdgeInsets.all(12),
+                decoration: BoxDecoration(
+                  color: Colors.orange.withOpacity(0.1),
+                  borderRadius: BorderRadius.circular(8),
+                  border: Border.all(color: Colors.orange.withOpacity(0.3)),
+                ),
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Row(
+                      children: [
+                        Icon(Icons.notifications_off, color: Colors.orange, size: 20),
+                        const SizedBox(width: 8),
+                        const Text(
+                          'Notification permission required',
+                          style: TextStyle(fontWeight: FontWeight.w600),
+                        ),
+                      ],
+                    ),
+                    const SizedBox(height: 8),
+                    const Text(
+                      'Push notifications are disabled. You\'ll only see in-app alerts and won\'t be notified when the app is in background.',
+                      style: TextStyle(fontSize: 12),
+                    ),
+                    const SizedBox(height: 8),
+                    ElevatedButton.icon(
+                      onPressed: _requestNotificationPermissions,
+                      icon: const Icon(Icons.settings, size: 16),
+                      label: const Text('Enable Notifications'),
+                      style: ElevatedButton.styleFrom(
+                        minimumSize: const Size(0, 32),
+                        textStyle: const TextStyle(fontSize: 12),
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+            ],
+            
+            // Loading indicator
+            if (_checkingPermissions) ...[
+              const SizedBox(height: 8),
+              const Row(
+                children: [
+                  SizedBox(
+                    width: 16,
+                    height: 16,
+                    child: CircularProgressIndicator(strokeWidth: 2),
+                  ),
+                  SizedBox(width: 8),
+                  Text('Checking permissions...', style: TextStyle(fontSize: 12)),
+                ],
+              ),
+            ],
+            
+            // Distance setting (only show when enabled)
+            if (appState.proximityAlertsEnabled) ...[
+              const SizedBox(height: 12),
+              Row(
+                children: [
+                  const Text('Alert distance: '),
+                  SizedBox(
+                    width: 80,
+                    child: TextField(
+                      controller: _distanceController,
+                      keyboardType: TextInputType.number,
+                      inputFormatters: [
+                        FilteringTextInputFormatter.digitsOnly,
+                      ],
+                      decoration: const InputDecoration(
+                        isDense: true,
+                        contentPadding: EdgeInsets.symmetric(
+                          horizontal: 8, 
+                          vertical: 8,
+                        ),
+                        border: OutlineInputBorder(),
+                      ),
+                      onSubmitted: (_) => _updateDistance(appState),
+                      onEditingComplete: () => _updateDistance(appState),
+                    ),
+                  ),
+                  const SizedBox(width: 8),
+                  const Text('meters'),
+                ],
+              ),
+              const SizedBox(height: 8),
+              Text(
+                'Range: $kProximityAlertMinDistance-$kProximityAlertMaxDistance meters (default: $kProximityAlertDefaultDistance)',
+                style: Theme.of(context).textTheme.bodySmall?.copyWith(
+                  color: Theme.of(context).textTheme.bodySmall?.color?.withOpacity(0.6),
+                ),
+              ),
+            ],
+          ],
+        );
+      },
+    );
+  }
+}

lib/screens/settings_screen_sections/upload_mode_section.dart

@@ -53,19 +53,9 @@ class UploadModeSection extends StatelessWidget {
                         style: TextStyle(fontSize: 12, color: Theme.of(context).colorScheme.onSurface.withOpacity(0.7))
                       );
                     case UploadMode.sandbox:
-                      return Column(
-                        crossAxisAlignment: CrossAxisAlignment.start,
-                        children: [
-                          Text(
-                            locService.t('uploadMode.sandboxDescription'),
-                            style: const TextStyle(fontSize: 12, color: Colors.orange),
-                          ),
-                          const SizedBox(height: 2),
-                          Text(
-                            locService.t('uploadMode.sandboxNote'),
-                            style: const TextStyle(fontSize: 11, color: Colors.redAccent),
-                          ),
-                        ],
+                      return Text(
+                        locService.t('uploadMode.sandboxDescription'),
+                        style: const TextStyle(fontSize: 12, color: Colors.orange),
                       );
                     case UploadMode.simulate:
                     default:

lib/services/localization_service.dart

@@ -24,9 +24,44 @@ class LocalizationService extends ChangeNotifier {
   }
 
   Future<void> _discoverAvailableLanguages() async {
-    // For now, we'll hardcode the languages we support
-    // In the future, this could scan the assets directory
-    _availableLanguages = ['en', 'es', 'fr', 'de'];
+    _availableLanguages = [];
+    
+    try {
+      // Get the asset manifest to find all localization files
+      final manifestContent = await rootBundle.loadString('AssetManifest.json');
+      final Map<String, dynamic> manifestMap = json.decode(manifestContent);
+      
+      // Find all .json files in lib/localizations/
+      final localizationFiles = manifestMap.keys
+          .where((String key) => key.startsWith('lib/localizations/') && key.endsWith('.json'))
+          .toList();
+      
+      for (final filePath in localizationFiles) {
+        // Extract language code from filename (e.g., 'lib/localizations/pt.json' -> 'pt')
+        final fileName = filePath.split('/').last;
+        final languageCode = fileName.substring(0, fileName.length - 5); // Remove '.json'
+        
+        try {
+          // Try to load and parse the file to ensure it's valid
+          final jsonString = await rootBundle.loadString(filePath);
+          final parsedJson = json.decode(jsonString);
+          
+          // Basic validation - ensure it has the expected structure
+          if (parsedJson is Map && parsedJson.containsKey('language')) {
+            _availableLanguages.add(languageCode);
+            debugPrint('Found localization: $languageCode');
+          }
+        } catch (e) {
+          debugPrint('Failed to load localization file $filePath: $e');
+        }
+      }
+    } catch (e) {
+      debugPrint('Failed to read AssetManifest.json: $e');
+      // If manifest reading fails, we'll have an empty list
+      // The system will handle this gracefully by falling back to 'en' in _loadSavedLanguage
+    }
+    
+    debugPrint('Available languages: $_availableLanguages');
   }
 
   Future<void> _loadSavedLanguage() async {

lib/services/map_data_provider.dart

@@ -3,7 +3,7 @@ import 'package:flutter_map/flutter_map.dart';
 import 'package:flutter/foundation.dart';
 
 import '../models/node_profile.dart';
-import '../models/osm_camera_node.dart';
+import '../models/osm_node.dart';
 import '../app_state.dart';
 import 'map_data_submodules/nodes_from_overpass.dart';
 import 'map_data_submodules/nodes_from_osm_api.dart';
@@ -35,7 +35,7 @@ class MapDataProvider {
 
   /// Fetch surveillance nodes from OSM/Overpass or local storage.
   /// Remote is default. If source is MapSource.auto, remote is tried first unless offline.
-  Future<List<OsmCameraNode>> getNodes({
+  Future<List<OsmNode>> getNodes({
     required LatLngBounds bounds,
     required List<NodeProfile> profiles,
     UploadMode uploadMode = UploadMode.production,
@@ -70,7 +70,7 @@ class MapDataProvider {
       if (uploadMode == UploadMode.sandbox) {
         // Offline + Sandbox = no nodes (local cache is production data)
         debugPrint('[MapDataProvider] Offline + Sandbox mode: returning no nodes (local cache is production data)');
-        return <OsmCameraNode>[];
+        return <OsmNode>[];
       } else {
         // Offline + Production = use local cache
         return fetchLocalNodes(
@@ -90,7 +90,7 @@ class MapDataProvider {
       );
     } else {
       // Production mode: fetch both remote and local, then merge with deduplication
-      final List<Future<List<OsmCameraNode>>> futures = [];
+      final List<Future<List<OsmNode>>> futures = [];
       
       // Always try to get local nodes (fast, cached)
       futures.add(fetchLocalNodes(
@@ -107,7 +107,7 @@ class MapDataProvider {
         maxResults: AppState.instance.maxCameras,
       ).catchError((e) {
         debugPrint('[MapDataProvider] Remote node fetch failed, error: $e. Continuing with local only.');
-        return <OsmCameraNode>[]; // Return empty list on remote failure
+        return <OsmNode>[]; // Return empty list on remote failure
       }));
       
       // Wait for both, then merge with deduplication by node ID
@@ -116,7 +116,7 @@ class MapDataProvider {
       final remoteNodes = results[1];
       
       // Merge with deduplication - prefer remote data over local for same node ID
-      final Map<int, OsmCameraNode> mergedNodes = {};
+      final Map<int, OsmNode> mergedNodes = {};
       
       // Add local nodes first
       for (final node in localNodes) {
@@ -140,7 +140,7 @@ class MapDataProvider {
 
   /// Bulk/paged node fetch for offline downloads (handling paging, dedup, and Overpass retries)
   /// Only use for offline area download, not for map browsing! Ignores maxCameras config.
-  Future<List<OsmCameraNode>> getAllNodesForDownload({
+  Future<List<OsmNode>> getAllNodesForDownload({
     required LatLngBounds bounds,
     required List<NodeProfile> profiles,
     UploadMode uploadMode = UploadMode.production,
@@ -214,7 +214,7 @@ class MapDataProvider {
   }
 
   /// Fetch remote nodes with Overpass first, OSM API fallback
-  Future<List<OsmCameraNode>> _fetchRemoteNodes({
+  Future<List<OsmNode>> _fetchRemoteNodes({
     required LatLngBounds bounds,
     required List<NodeProfile> profiles,
     UploadMode uploadMode = UploadMode.production,

lib/services/map_data_submodules/nodes_from_local.dart

@@ -3,19 +3,19 @@ import 'dart:convert';
 import 'package:flutter/foundation.dart';
 import 'package:latlong2/latlong.dart';
 import 'package:flutter_map/flutter_map.dart' show LatLngBounds;
-import '../../models/osm_camera_node.dart';
+import '../../models/osm_node.dart';
 import '../../models/node_profile.dart';
 import '../offline_area_service.dart';
 import '../offline_areas/offline_area_models.dart';
 
 /// Fetch surveillance nodes from all offline areas intersecting the bounds/profile list.
-Future<List<OsmCameraNode>> fetchLocalNodes({
+Future<List<OsmNode>> fetchLocalNodes({
   required LatLngBounds bounds,
   required List<NodeProfile> profiles,
   int? maxNodes,
 }) async {
   final areas = OfflineAreaService().offlineAreas;
-  final Map<int, OsmCameraNode> deduped = {};
+  final Map<int, OsmNode> deduped = {};
 
   for (final area in areas) {
     if (area.status != OfflineAreaStatus.complete) continue;
@@ -38,7 +38,7 @@ Future<List<OsmCameraNode>> fetchLocalNodes({
 }
 
 // Try in-memory first, else load from disk
-Future<List<OsmCameraNode>> _loadAreaNodes(OfflineArea area) async {
+Future<List<OsmNode>> _loadAreaNodes(OfflineArea area) async {
   if (area.nodes.isNotEmpty) {
     return area.nodes;
   }
@@ -58,7 +58,7 @@ Future<List<OsmCameraNode>> _loadAreaNodes(OfflineArea area) async {
     try {
       final str = await fileToLoad.readAsString();
       final jsonList = jsonDecode(str) as List;
-      return jsonList.map((e) => OsmCameraNode.fromJson(e)).toList();
+      return jsonList.map((e) => OsmNode.fromJson(e)).toList();
     } catch (e) {
       debugPrint('[_loadAreaNodes] Error loading nodes from ${fileToLoad.path}: $e');
     }
@@ -74,14 +74,14 @@ bool _pointInBounds(LatLng pt, LatLngBounds bounds) {
          pt.longitude <= bounds.northEast.longitude;
 }
 
-bool _matchesAnyProfile(OsmCameraNode node, List<NodeProfile> profiles) {
+bool _matchesAnyProfile(OsmNode node, List<NodeProfile> profiles) {
   for (final prof in profiles) {
     if (_nodeMatchesProfile(node, prof)) return true;
   }
   return false;
 }
 
-bool _nodeMatchesProfile(OsmCameraNode node, NodeProfile profile) {
+bool _nodeMatchesProfile(OsmNode node, NodeProfile profile) {
   for (final e in profile.tags.entries) {
     if (node.tags[e.key] != e.value) return false; // All profile tags must match
   }

lib/services/map_data_submodules/nodes_from_osm_api.dart

@@ -6,13 +6,13 @@ import 'package:flutter_map/flutter_map.dart';
 import 'package:xml/xml.dart';
 
 import '../../models/node_profile.dart';
-import '../../models/osm_camera_node.dart';
+import '../../models/osm_node.dart';
 import '../../app_state.dart';
 import '../network_status.dart';
 
 /// Fetches surveillance nodes from the direct OSM API using bbox query.
 /// This is a fallback for when Overpass is not available (e.g., sandbox mode).
-Future<List<OsmCameraNode>> fetchOsmApiNodes({
+Future<List<OsmNode>> fetchOsmApiNodes({
   required LatLngBounds bounds,
   required List<NodeProfile> profiles,
   UploadMode uploadMode = UploadMode.production,
@@ -47,7 +47,7 @@ Future<List<OsmCameraNode>> fetchOsmApiNodes({
     
     // Parse XML response
     final document = XmlDocument.parse(response.body);
-    final nodes = <OsmCameraNode>[];
+    final nodes = <OsmNode>[];
     
     // Find all node elements
     for (final nodeElement in document.findAllElements('node')) {
@@ -73,7 +73,7 @@ Future<List<OsmCameraNode>> fetchOsmApiNodes({
       
       // Check if this node matches any of our profiles
       if (_nodeMatchesProfiles(tags, profiles)) {
-        nodes.add(OsmCameraNode(
+        nodes.add(OsmNode(
           id: id,
           coord: LatLng(lat, lon),
           tags: tags,

lib/services/map_data_submodules/nodes_from_overpass.dart

@@ -5,13 +5,13 @@ import 'package:latlong2/latlong.dart';
 import 'package:flutter_map/flutter_map.dart';
 
 import '../../models/node_profile.dart';
-import '../../models/osm_camera_node.dart';
+import '../../models/osm_node.dart';
 import '../../models/pending_upload.dart';
 import '../../app_state.dart';
 import '../network_status.dart';
 
 /// Fetches surveillance nodes from the Overpass OSM API for the given bounds and profiles.
-Future<List<OsmCameraNode>> fetchOverpassNodes({
+Future<List<OsmNode>> fetchOverpassNodes({
   required LatLngBounds bounds,
   required List<NodeProfile> profiles,
   UploadMode uploadMode = UploadMode.production,
@@ -49,7 +49,7 @@ Future<List<OsmCameraNode>> fetchOverpassNodes({
     NetworkStatus.instance.reportOverpassSuccess();
     
     final nodes = elements.whereType<Map<String, dynamic>>().map((element) {
-      return OsmCameraNode(
+      return OsmNode(
         id: element['id'],
         coord: LatLng(element['lat'], element['lon']),
         tags: Map<String, String>.from(element['tags'] ?? {}),
@@ -101,7 +101,7 @@ $outputClause
 }
 
 /// Clean up pending uploads that now appear in Overpass results
-void _cleanupCompletedUploads(List<OsmCameraNode> overpassNodes) {
+void _cleanupCompletedUploads(List<OsmNode> overpassNodes) {
   try {
     final appState = AppState.instance;
     final pendingUploads = appState.pendingUploads;

lib/services/node_cache.dart

@@ -1,5 +1,5 @@
 import 'package:latlong2/latlong.dart';
-import '../models/osm_camera_node.dart';
+import '../models/osm_node.dart';
 import 'package:flutter_map/flutter_map.dart' show LatLngBounds;
 
 class NodeCache {
@@ -8,10 +8,10 @@ class NodeCache {
   factory NodeCache() => instance;
   NodeCache._internal();
 
-  final Map<int, OsmCameraNode> _nodes = {};
+  final Map<int, OsmNode> _nodes = {};
 
   /// Add or update a batch of nodes in the cache.
-  void addOrUpdate(List<OsmCameraNode> nodes) {
+  void addOrUpdate(List<OsmNode> nodes) {
     for (var node in nodes) {
       final existing = _nodes[node.id];
       if (existing != null) {
@@ -22,7 +22,7 @@ class NodeCache {
             mergedTags[entry.key] = entry.value;
           }
         }
-        _nodes[node.id] = OsmCameraNode(
+        _nodes[node.id] = OsmNode(
           id: node.id,
           coord: node.coord,
           tags: mergedTags,
@@ -34,14 +34,14 @@ class NodeCache {
   }
 
   /// Query for all cached nodes currently within the given LatLngBounds.
-  List<OsmCameraNode> queryByBounds(LatLngBounds bounds) {
+  List<OsmNode> queryByBounds(LatLngBounds bounds) {
     return _nodes.values
         .where((node) => _inBounds(node.coord, bounds))
         .toList();
   }
 
   /// Retrieve all cached nodes.
-  List<OsmCameraNode> getAll() => _nodes.values.toList();
+  List<OsmNode> getAll() => _nodes.values.toList();
 
   /// Optionally clear the cache (rarely needed)
   void clear() => _nodes.clear();
@@ -53,7 +53,7 @@ class NodeCache {
       final cleanTags = Map<String, String>.from(node.tags);
       cleanTags.remove('_pending_edit');
       
-      _nodes[nodeId] = OsmCameraNode(
+      _nodes[nodeId] = OsmNode(
         id: node.id,
         coord: node.coord,
         tags: cleanTags,

lib/services/offline_area_service.dart

@@ -8,7 +8,7 @@ import 'offline_areas/offline_area_models.dart';
 import 'offline_areas/offline_tile_utils.dart';
 import 'offline_areas/offline_area_downloader.dart';
 
-import '../models/osm_camera_node.dart';
+import '../models/osm_node.dart';
 import '../app_state.dart';
 import 'map_data_provider.dart';
 import 'package:deflockapp/dev_config.dart';

lib/services/offline_areas/offline_area_downloader.dart

@@ -6,7 +6,7 @@ import 'package:latlong2/latlong.dart';
 import 'package:flutter_map/flutter_map.dart' show LatLngBounds;
 
 import '../../app_state.dart';
-import '../../models/osm_camera_node.dart';
+import '../../models/osm_node.dart';
 import '../map_data_provider.dart';
 import 'offline_area_models.dart';
 import 'offline_tile_utils.dart';
@@ -182,7 +182,7 @@ class OfflineAreaDownloader {
   }
 
   /// Save nodes to disk as JSON
-  static Future<void> saveNodes(List<OsmCameraNode> nodes, String dir) async {
+  static Future<void> saveNodes(List<OsmNode> nodes, String dir) async {
     final file = File('$dir/nodes.json');
     await file.writeAsString(jsonEncode(nodes.map((n) => n.toJson()).toList()));
   }

lib/services/offline_areas/offline_area_models.dart

@@ -1,6 +1,6 @@
 import 'package:latlong2/latlong.dart';
 import 'package:flutter_map/flutter_map.dart' show LatLngBounds;
-import '../../models/osm_camera_node.dart';
+import '../../models/osm_node.dart';
 
 /// Status of an offline area
 enum OfflineAreaStatus { downloading, complete, error, cancelled }
@@ -17,7 +17,7 @@ class OfflineArea {
   double progress; // 0.0 - 1.0
   int tilesDownloaded;
   int tilesTotal;
-  List<OsmCameraNode> nodes;
+  List<OsmNode> nodes;
   int sizeBytes; // Disk size in bytes
   final bool isPermanent; // Not user-deletable if true
   
@@ -88,7 +88,7 @@ class OfflineArea {
       tilesDownloaded: json['tilesDownloaded'] ?? 0,
       tilesTotal: json['tilesTotal'] ?? 0,
       nodes: (json['nodes'] as List? ?? json['cameras'] as List? ?? [])
-          .map((e) => OsmCameraNode.fromJson(e)).toList(),
+          .map((e) => OsmNode.fromJson(e)).toList(),
       sizeBytes: json['sizeBytes'] ?? 0,
       isPermanent: json['isPermanent'] ?? false,
       tileProviderId: json['tileProviderId'],

lib/services/proximity_alert_service.dart

@@ -0,0 +1,257 @@
+import 'dart:async';
+import 'package:flutter/material.dart';
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
+import 'package:geolocator/geolocator.dart';
+import 'package:latlong2/latlong.dart';
+
+import '../models/osm_node.dart';
+import '../models/node_profile.dart';
+import '../dev_config.dart';
+
+/// Simple data class for tracking recent proximity alerts to prevent spam
+class RecentAlert {
+  final int nodeId;
+  final DateTime alertTime;
+  
+  RecentAlert({required this.nodeId, required this.alertTime});
+}
+
+/// Service for handling proximity alerts when approaching surveillance nodes
+/// Follows brutalist principles: simple, explicit, easy to understand
+class ProximityAlertService {
+  static final ProximityAlertService _instance = ProximityAlertService._internal();
+  factory ProximityAlertService() => _instance;
+  ProximityAlertService._internal();
+
+  FlutterLocalNotificationsPlugin? _notifications;
+  bool _isInitialized = false;
+  
+  // Simple in-memory tracking of recent alerts to prevent spam
+  final List<RecentAlert> _recentAlerts = [];
+  static const Duration _alertCooldown = kProximityAlertCooldown;
+  
+  // Callback for showing in-app visual alerts
+  VoidCallback? _onVisualAlert;
+  
+  /// Initialize the notification plugin and request permissions
+  Future<void> initialize({VoidCallback? onVisualAlert}) async {
+    _onVisualAlert = onVisualAlert;
+    
+    _notifications = FlutterLocalNotificationsPlugin();
+    
+    const androidSettings = AndroidInitializationSettings('@mipmap/ic_launcher');
+    const iosSettings = DarwinInitializationSettings(
+      requestAlertPermission: true,
+      requestBadgePermission: true,
+      requestSoundPermission: true,
+    );
+    
+    const initSettings = InitializationSettings(
+      android: androidSettings,
+      iOS: iosSettings,
+    );
+    
+    try {
+      final initialized = await _notifications!.initialize(initSettings);
+      _isInitialized = initialized ?? false;
+      
+      // Request notification permissions (especially important for Android 13+)
+      if (_isInitialized) {
+        await _requestNotificationPermissions();
+      }
+      
+      debugPrint('[ProximityAlertService] Initialized: $_isInitialized');
+    } catch (e) {
+      debugPrint('[ProximityAlertService] Failed to initialize: $e');
+      _isInitialized = false;
+    }
+  }
+  
+  /// Request notification permissions on both platforms
+  Future<void> _requestNotificationPermissions() async {
+    if (_notifications == null) return;
+    
+    try {
+      // Request permissions - this will show the permission dialog on Android 13+
+      final result = await _notifications!
+          .resolvePlatformSpecificImplementation<AndroidFlutterLocalNotificationsPlugin>()
+          ?.requestNotificationsPermission();
+      
+      debugPrint('[ProximityAlertService] Android notification permission result: $result');
+      
+      // Also request for iOS (though this was already done in initialization)
+      await _notifications!
+          .resolvePlatformSpecificImplementation<IOSFlutterLocalNotificationsPlugin>()
+          ?.requestPermissions(
+            alert: true,
+            badge: true,
+            sound: true,
+          );
+    } catch (e) {
+      debugPrint('[ProximityAlertService] Failed to request permissions: $e');
+    }
+  }
+  
+  /// Check proximity to nodes and trigger alerts if needed
+  /// This should be called on GPS position updates
+  Future<void> checkProximity({
+    required LatLng userLocation,
+    required List<OsmNode> nodes,
+    required List<NodeProfile> enabledProfiles,
+    required int alertDistance,
+  }) async {
+    if (!_isInitialized || nodes.isEmpty) return;
+    
+    // Clean up old alerts (anything older than cooldown period)
+    final cutoffTime = DateTime.now().subtract(_alertCooldown);
+    _recentAlerts.removeWhere((alert) => alert.alertTime.isBefore(cutoffTime));
+    
+    // Check each node for proximity
+    for (final node in nodes) {
+      // Skip if we recently alerted for this node
+      if (_recentAlerts.any((alert) => alert.nodeId == node.id)) {
+        continue;
+      }
+      
+      // Calculate distance using Geolocator's distanceBetween
+      final distance = Geolocator.distanceBetween(
+        userLocation.latitude,
+        userLocation.longitude,
+        node.coord.latitude,
+        node.coord.longitude,
+      );
+      
+      // Check if within alert distance
+      if (distance <= alertDistance) {
+        // Determine node type for alert message
+        final nodeType = _getNodeTypeDescription(node, enabledProfiles);
+        
+        // Trigger both push notification and visual alert
+        await _showNotification(node, nodeType, distance.round());
+        _showVisualAlert();
+        
+        // Track this alert to prevent spam
+        _recentAlerts.add(RecentAlert(
+          nodeId: node.id,
+          alertTime: DateTime.now(),
+        ));
+        
+        debugPrint('[ProximityAlertService] Alert triggered for node ${node.id} ($nodeType) at ${distance.round()}m');
+      }
+    }
+  }
+  
+  /// Show push notification for proximity alert
+  Future<void> _showNotification(OsmNode node, String nodeType, int distance) async {
+    if (!_isInitialized || _notifications == null) return;
+    
+    const androidDetails = AndroidNotificationDetails(
+      'proximity_alerts',
+      'Proximity Alerts',
+      channelDescription: 'Notifications when approaching surveillance devices',
+      importance: Importance.high,
+      priority: Priority.high,
+      enableVibration: true,
+      playSound: true,
+    );
+    
+    const iosDetails = DarwinNotificationDetails(
+      presentAlert: true,
+      presentBadge: false,
+      presentSound: true,
+    );
+    
+    const notificationDetails = NotificationDetails(
+      android: androidDetails,
+      iOS: iosDetails,
+    );
+    
+    final title = 'Surveillance Device Nearby';
+    final body = '$nodeType detected ${distance}m ahead';
+    
+    try {
+      await _notifications!.show(
+        node.id, // Use node ID as notification ID
+        title,
+        body,
+        notificationDetails,
+      );
+    } catch (e) {
+      debugPrint('[ProximityAlertService] Failed to show notification: $e');
+    }
+  }
+  
+  /// Trigger visual alert in the app UI
+  void _showVisualAlert() {
+    _onVisualAlert?.call();
+  }
+  
+  /// Get a user-friendly description of the node type
+  String _getNodeTypeDescription(OsmNode node, List<NodeProfile> enabledProfiles) {
+    final tags = node.tags;
+    
+    // Check for specific surveillance types
+    if (tags.containsKey('man_made') && tags['man_made'] == 'surveillance') {
+      final surveillanceType = tags['surveillance:type'] ?? 'surveillance device';
+      if (surveillanceType == 'camera') return 'Camera';
+      if (surveillanceType == 'ALPR') return 'License plate reader';
+      return 'Surveillance device';
+    }
+    
+    // Check for emergency devices
+    if (tags.containsKey('emergency') && tags['emergency'] == 'siren') {
+      return 'Emergency siren';
+    }
+    
+    // Fall back to checking enabled profiles to see what type this might be
+    for (final profile in enabledProfiles) {
+      bool matches = true;
+      for (final entry in profile.tags.entries) {
+        if (node.tags[entry.key] != entry.value) {
+          matches = false;
+          break;
+        }
+      }
+      if (matches) {
+        return profile.name;
+      }
+    }
+    
+    return 'Surveillance device';
+  }
+  
+  /// Get count of recent alerts (for debugging/testing)
+  int get recentAlertCount => _recentAlerts.length;
+  
+  /// Clear recent alerts (for testing)
+  void clearRecentAlerts() {
+    _recentAlerts.clear();
+  }
+  
+  /// Check if notification permissions are granted
+  Future<bool> areNotificationsEnabled() async {
+    if (!_isInitialized || _notifications == null) return false;
+    
+    try {
+      // Check Android permissions
+      final androidImpl = _notifications!
+          .resolvePlatformSpecificImplementation<AndroidFlutterLocalNotificationsPlugin>();
+      if (androidImpl != null) {
+        final result = await androidImpl.areNotificationsEnabled();
+        return result ?? false;
+      }
+      
+      // For iOS, assume enabled if we got this far (permissions were requested during init)
+      return true;
+    } catch (e) {
+      debugPrint('[ProximityAlertService] Failed to check notification permissions: $e');
+      return false;
+    }
+  }
+  
+  /// Request permissions again (can be called from settings)
+  Future<bool> requestNotificationPermissions() async {
+    await _requestNotificationPermissions();
+    return await areNotificationsEnabled();
+  }
+}

lib/state/session_state.dart

@@ -3,7 +3,7 @@ import 'package:latlong2/latlong.dart';
 
 import '../models/node_profile.dart';
 import '../models/operator_profile.dart';
-import '../models/osm_camera_node.dart';
+import '../models/osm_node.dart';
 
 // ------------------ AddNodeSession ------------------
 class AddNodeSession {
@@ -23,7 +23,7 @@ class EditNodeSession {
     required this.target,
   });
   
-  final OsmCameraNode originalNode; // The original node being edited
+  final OsmNode originalNode; // The original node being edited
   NodeProfile profile;
   OperatorProfile? operatorProfile;
   double directionDegrees;
@@ -48,7 +48,7 @@ class SessionState extends ChangeNotifier {
     notifyListeners();
   }
 
-  void startEditSession(OsmCameraNode node, List<NodeProfile> enabledProfiles) {
+  void startEditSession(OsmNode node, List<NodeProfile> enabledProfiles) {
     final submittableProfiles = enabledProfiles.where((p) => p.isSubmittable).toList();
     
     // Try to find a matching profile based on the node's tags

lib/state/settings_state.dart

@@ -24,11 +24,15 @@ class SettingsState extends ChangeNotifier {
   static const String _selectedTileTypePrefsKey = 'selected_tile_type';
   static const String _legacyTestModePrefsKey = 'test_mode';
   static const String _followMeModePrefsKey = 'follow_me_mode';
+  static const String _proximityAlertsEnabledPrefsKey = 'proximity_alerts_enabled';
+  static const String _proximityAlertDistancePrefsKey = 'proximity_alert_distance';
 
   bool _offlineMode = false;
   int _maxCameras = 250;
   UploadMode _uploadMode = kEnableDevelopmentModes ? UploadMode.simulate : UploadMode.production;
   FollowMeMode _followMeMode = FollowMeMode.northUp;
+  bool _proximityAlertsEnabled = false;
+  int _proximityAlertDistance = kProximityAlertDefaultDistance;
   List<TileProvider> _tileProviders = [];
   String _selectedTileTypeId = '';
 
@@ -37,6 +41,8 @@ class SettingsState extends ChangeNotifier {
   int get maxCameras => _maxCameras;
   UploadMode get uploadMode => _uploadMode;
   FollowMeMode get followMeMode => _followMeMode;
+  bool get proximityAlertsEnabled => _proximityAlertsEnabled;
+  int get proximityAlertDistance => _proximityAlertDistance;
   List<TileProvider> get tileProviders => List.unmodifiable(_tileProviders);
   String get selectedTileTypeId => _selectedTileTypeId;
   
@@ -85,6 +91,10 @@ class SettingsState extends ChangeNotifier {
       _maxCameras = prefs.getInt(_maxCamerasPrefsKey) ?? 250;
     }
     
+    // Load proximity alerts settings
+    _proximityAlertsEnabled = prefs.getBool(_proximityAlertsEnabledPrefsKey) ?? false;
+    _proximityAlertDistance = prefs.getInt(_proximityAlertDistancePrefsKey) ?? kProximityAlertDefaultDistance;
+    
     // Load upload mode (including migration from old test_mode bool)
     if (prefs.containsKey(_uploadModePrefsKey)) {
       final idx = prefs.getInt(_uploadModePrefsKey) ?? 0;
@@ -253,4 +263,26 @@ class SettingsState extends ChangeNotifier {
     }
   }
 
+  /// Set proximity alerts enabled/disabled
+  Future<void> setProximityAlertsEnabled(bool enabled) async {
+    if (_proximityAlertsEnabled != enabled) {
+      _proximityAlertsEnabled = enabled;
+      final prefs = await SharedPreferences.getInstance();
+      await prefs.setBool(_proximityAlertsEnabledPrefsKey, enabled);
+      notifyListeners();
+    }
+  }
+
+  /// Set proximity alert distance in meters
+  Future<void> setProximityAlertDistance(int distance) async {
+    if (distance < kProximityAlertMinDistance) distance = kProximityAlertMinDistance;
+    if (distance > kProximityAlertMaxDistance) distance = kProximityAlertMaxDistance;
+    if (_proximityAlertDistance != distance) {
+      _proximityAlertDistance = distance;
+      final prefs = await SharedPreferences.getInstance();
+      await prefs.setInt(_proximityAlertDistancePrefsKey, distance);
+      notifyListeners();
+    }
+  }
+
 }

lib/state/upload_queue_state.dart

@@ -4,7 +4,7 @@ import 'package:flutter/material.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
 import '../models/pending_upload.dart';
-import '../models/osm_camera_node.dart';
+import '../models/osm_node.dart';
 import '../models/node_profile.dart';
 import '../services/node_cache.dart';
 import '../services/uploader.dart';
@@ -46,7 +46,7 @@ class UploadQueueState extends ChangeNotifier {
     final tags = upload.getCombinedTags();
     tags['_pending_upload'] = 'true'; // Mark as pending for potential UI distinction
     
-    final tempNode = OsmCameraNode(
+    final tempNode = OsmNode(
       id: tempId,
       coord: upload.coord,
       tags: tags,
@@ -80,7 +80,7 @@ class UploadQueueState extends ChangeNotifier {
     final originalTags = Map<String, String>.from(session.originalNode.tags);
     originalTags['_pending_edit'] = 'true'; // Mark original as having pending edit
     
-    final originalNode = OsmCameraNode(
+    final originalNode = OsmNode(
       id: session.originalNode.id,
       coord: session.originalNode.coord, // Keep at original location
       tags: originalTags,
@@ -92,7 +92,7 @@ class UploadQueueState extends ChangeNotifier {
     editedTags['_pending_upload'] = 'true'; // Mark as pending upload
     editedTags['_original_node_id'] = session.originalNode.id.toString(); // Track original for line drawing
     
-    final editedNode = OsmCameraNode(
+    final editedNode = OsmNode(
       id: tempId,
       coord: upload.coord, // At new location
       tags: editedTags,
@@ -106,7 +106,7 @@ class UploadQueueState extends ChangeNotifier {
   }
 
   // Add a node deletion to the upload queue
-  void addFromNodeDeletion(OsmCameraNode node, {required UploadMode uploadMode}) {
+  void addFromNodeDeletion(OsmNode node, {required UploadMode uploadMode}) {
     final upload = PendingUpload(
       coord: node.coord,
       direction: node.directionDeg ?? 0, // Use existing direction or default to 0
@@ -123,7 +123,7 @@ class UploadQueueState extends ChangeNotifier {
     final deletionTags = Map<String, String>.from(node.tags);
     deletionTags['_pending_deletion'] = 'true';
     
-    final nodeWithDeletionTag = OsmCameraNode(
+    final nodeWithDeletionTag = OsmNode(
       id: node.id,
       coord: node.coord,
       tags: deletionTags,
@@ -259,7 +259,7 @@ class UploadQueueState extends ChangeNotifier {
     // Create the node with real ID and clean tags (remove temp markers)
     final tags = item.getCombinedTags();
     
-    final realNode = OsmCameraNode(
+    final realNode = OsmNode(
       id: realNodeId,
       coord: item.coord,
       tags: tags, // Clean tags without _pending_upload markers

lib/widgets/camera_provider_with_cache.dart

@@ -7,7 +7,7 @@ import '../services/map_data_provider.dart';
 import '../services/node_cache.dart';
 import '../services/network_status.dart';
 import '../models/node_profile.dart';
-import '../models/osm_camera_node.dart';
+import '../models/osm_node.dart';
 import '../app_state.dart';
 
 /// Provides surveillance nodes for a map view, using an in-memory cache and optionally
@@ -21,7 +21,7 @@ class CameraProviderWithCache extends ChangeNotifier {
 
   /// Call this to get (quickly) all cached overlays for the given view.
   /// Filters by currently enabled profiles.
-  List<OsmCameraNode> getCachedNodesForBounds(LatLngBounds bounds) {
+  List<OsmNode> getCachedNodesForBounds(LatLngBounds bounds) {
     final allNodes = NodeCache.instance.queryByBounds(bounds);
     final enabledProfiles = AppState.instance.enabledProfiles;
     
@@ -79,7 +79,7 @@ class CameraProviderWithCache extends ChangeNotifier {
   }
 
   /// Check if a node matches any of the provided profiles
-  bool _matchesAnyProfile(OsmCameraNode node, List<NodeProfile> profiles) {
+  bool _matchesAnyProfile(OsmNode node, List<NodeProfile> profiles) {
     for (final profile in profiles) {
       if (_nodeMatchesProfile(node, profile)) return true;
     }
@@ -87,7 +87,7 @@ class CameraProviderWithCache extends ChangeNotifier {
   }
 
   /// Check if a node matches a specific profile (all profile tags must match)
-  bool _nodeMatchesProfile(OsmCameraNode node, NodeProfile profile) {
+  bool _nodeMatchesProfile(OsmNode node, NodeProfile profile) {
     for (final entry in profile.tags.entries) {
       if (node.tags[entry.key] != entry.value) return false;
     }

lib/widgets/map/camera_markers.dart

@@ -4,13 +4,13 @@ import 'package:flutter_map/flutter_map.dart';
 import 'package:latlong2/latlong.dart';
 
 import '../../dev_config.dart';
-import '../../models/osm_camera_node.dart';
+import '../../models/osm_node.dart';
 import '../node_tag_sheet.dart';
 import '../camera_icon.dart';
 
 /// Smart marker widget for camera with single/double tap distinction
 class CameraMapMarker extends StatefulWidget {
-  final OsmCameraNode node;
+  final OsmNode node;
   final MapController mapController;
   const CameraMapMarker({required this.node, required this.mapController, Key? key}) : super(key: key);
 
@@ -76,7 +76,7 @@ class _CameraMapMarkerState extends State<CameraMapMarker> {
 /// Helper class to build marker layers for cameras and user location
 class CameraMarkersBuilder {
   static List<Marker> buildCameraMarkers({
-    required List<OsmCameraNode> cameras,
+    required List<OsmNode> cameras,
     required MapController mapController,
     LatLng? userLocation,
   }) {
@@ -104,7 +104,7 @@ class CameraMarkersBuilder {
     return markers;
   }
 
-  static bool _isValidCameraCoordinate(OsmCameraNode node) {
+  static bool _isValidCameraCoordinate(OsmNode node) {
     return (node.coord.latitude != 0 || node.coord.longitude != 0) &&
            node.coord.latitude.abs() <= 90 && 
            node.coord.longitude.abs() <= 180;

lib/widgets/map/direction_cones.dart

@@ -5,12 +5,12 @@ import 'package:latlong2/latlong.dart';
 
 import '../../app_state.dart';
 import '../../dev_config.dart';
-import '../../models/osm_camera_node.dart';
+import '../../models/osm_node.dart';
 
 /// Helper class to build direction cone polygons for cameras
 class DirectionConesBuilder {
   static List<Polygon> buildDirectionCones({
-    required List<OsmCameraNode> cameras,
+    required List<OsmNode> cameras,
     required double zoom,
     AddNodeSession? session,
     EditNodeSession? editSession,
@@ -52,7 +52,7 @@ class DirectionConesBuilder {
     return overlays;
   }
 
-  static bool _isValidCameraWithDirection(OsmCameraNode node) {
+  static bool _isValidCameraWithDirection(OsmNode node) {
     return node.hasDirection && 
            node.directionDeg != null &&
            (node.coord.latitude != 0 || node.coord.longitude != 0) &&
@@ -60,7 +60,7 @@ class DirectionConesBuilder {
            node.coord.longitude.abs() <= 180;
   }
 
-  static bool _isPendingUpload(OsmCameraNode node) {
+  static bool _isPendingUpload(OsmNode node) {
     return node.tags.containsKey('_pending_upload') && 
            node.tags['_pending_upload'] == 'true';
   }

lib/widgets/map/gps_controller.dart

@@ -6,6 +6,9 @@ import 'package:latlong2/latlong.dart';
 
 import '../../dev_config.dart';
 import '../../app_state.dart' show FollowMeMode;
+import '../../services/proximity_alert_service.dart';
+import '../../models/osm_node.dart';
+import '../../models/node_profile.dart';
 
 /// Manages GPS location tracking, follow-me modes, and location-based map animations.
 /// Handles GPS permissions, position streams, and follow-me behavior.
@@ -81,6 +84,11 @@ class GpsController {
     required FollowMeMode followMeMode,
     required AnimatedMapController controller,
     required VoidCallback onLocationUpdated,
+    // Optional parameters for proximity alerts
+    bool proximityAlertsEnabled = false,
+    int proximityAlertDistance = 200,
+    List<OsmNode> nearbyNodes = const [],
+    List<NodeProfile> enabledProfiles = const [],
   }) {
     final latLng = LatLng(position.latitude, position.longitude);
     _currentLatLng = latLng;
@@ -88,6 +96,16 @@ class GpsController {
     // Notify that location was updated (for setState, etc.)
     onLocationUpdated();
     
+    // Check proximity alerts if enabled
+    if (proximityAlertsEnabled && nearbyNodes.isNotEmpty) {
+      ProximityAlertService().checkProximity(
+        userLocation: latLng,
+        nodes: nearbyNodes,
+        enabledProfiles: enabledProfiles,
+        alertDistance: proximityAlertDistance,
+      );
+    }
+    
     // Handle follow-me animations if enabled - use current mode from app state
     if (followMeMode != FollowMeMode.off) {
       debugPrint('[GpsController] GPS position update: ${latLng.latitude}, ${latLng.longitude}, follow-me: $followMeMode');
@@ -131,6 +149,10 @@ class GpsController {
     required AnimatedMapController controller,
     required VoidCallback onLocationUpdated,
     required FollowMeMode Function() getCurrentFollowMeMode,
+    required bool Function() getProximityAlertsEnabled,
+    required int Function() getProximityAlertDistance,
+    required List<OsmNode> Function() getNearbyNodes,
+    required List<NodeProfile> Function() getEnabledProfiles,
   }) async {
     final perm = await Geolocator.requestPermission();
     if (perm == LocationPermission.denied ||
@@ -142,11 +164,20 @@ class GpsController {
     _positionSub = Geolocator.getPositionStream().listen((Position position) {
       // Get the current follow-me mode from the app state each time
       final currentFollowMeMode = getCurrentFollowMeMode();
+      final proximityAlertsEnabled = getProximityAlertsEnabled();
+      final proximityAlertDistance = getProximityAlertDistance();
+      final nearbyNodes = getNearbyNodes();
+      final enabledProfiles = getEnabledProfiles();
+      
       processPositionUpdate(
         position: position,
         followMeMode: currentFollowMeMode,
         controller: controller,
         onLocationUpdated: onLocationUpdated,
+        proximityAlertsEnabled: proximityAlertsEnabled,
+        proximityAlertDistance: proximityAlertDistance,
+        nearbyNodes: nearbyNodes,
+        enabledProfiles: enabledProfiles,
       );
     });
   }

lib/widgets/map/layer_selector_button.dart

@@ -4,6 +4,7 @@ import 'package:provider/provider.dart';
 import '../../app_state.dart';
 import '../../models/tile_provider.dart';
 import '../../services/offline_area_service.dart';
+import '../../services/localization_service.dart';
 
 class LayerSelectorButton extends StatelessWidget {
   const LayerSelectorButton({super.key});
@@ -22,9 +23,9 @@ class LayerSelectorButton extends StatelessWidget {
     final offlineService = OfflineAreaService();
     if (offlineService.hasActiveDownloads) {
       ScaffoldMessenger.of(context).showSnackBar(
-        const SnackBar(
-          content: Text('Cannot change tile types while downloading offline areas'),
-          duration: Duration(seconds: 3),
+        SnackBar(
+          content: Text(LocalizationService.instance.t('layerSelector.cannotChangeTileTypes')),
+          duration: const Duration(seconds: 3),
         ),
       );
       return;
@@ -58,6 +59,7 @@ class _LayerSelectorDialogState extends State<_LayerSelectorDialog> {
   Widget build(BuildContext context) {
     final appState = context.watch<AppState>();
     final providers = appState.tileProviders;
+    final locService = LocalizationService.instance;
 
     // Group tile types by provider for display
     final providerGroups = <TileProvider, List<TileType>>{};
@@ -86,9 +88,9 @@ class _LayerSelectorDialogState extends State<_LayerSelectorDialog> {
                 children: [
                   const Icon(Icons.layers),
                   const SizedBox(width: 8),
-                  const Text(
-                    'Select Map Layer',
-                    style: TextStyle(fontWeight: FontWeight.bold, fontSize: 18),
+                  Text(
+                    locService.t('layerSelector.selectMapLayer'),
+                    style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 18),
                   ),
                   const Spacer(),
                   IconButton(
@@ -104,10 +106,10 @@ class _LayerSelectorDialogState extends State<_LayerSelectorDialog> {
                 padding: EdgeInsets.zero,
                 children: [
                   if (providerGroups.isEmpty)
-                    const Padding(
-                      padding: EdgeInsets.all(24),
+                    Padding(
+                      padding: const EdgeInsets.all(24),
                       child: Center(
-                        child: Text('No tile providers available'),
+                        child: Text(locService.t('layerSelector.noTileProvidersAvailable')),
                       ),
                     )
                   else

lib/widgets/map_view.dart

@@ -7,7 +7,7 @@ import 'package:provider/provider.dart';
 import '../app_state.dart';
 import '../services/offline_area_service.dart';
 import '../services/network_status.dart';
-import '../models/osm_camera_node.dart';
+import '../models/osm_node.dart';
 import '../models/node_profile.dart';
 import '../models/tile_provider.dart';
 import 'debouncer.dart';
@@ -21,8 +21,10 @@ import 'map/tile_layer_manager.dart';
 import 'map/camera_refresh_controller.dart';
 import 'map/gps_controller.dart';
 import 'network_status_indicator.dart';
+import 'proximity_alert_banner.dart';
 import '../dev_config.dart';
 import '../app_state.dart' show FollowMeMode;
+import '../services/proximity_alert_service.dart';
 
 class MapView extends StatefulWidget {
   final AnimatedMapController controller;
@@ -55,6 +57,9 @@ class MapViewState extends State<MapView> {
   
   // Track zoom to clear queue on zoom changes
   double? _lastZoom;
+  
+  // State for proximity alert banner
+  bool _showProximityBanner = false;
 
   @override
   void initState() {
@@ -68,6 +73,17 @@ class MapViewState extends State<MapView> {
     _cameraController.initialize(onCamerasUpdated: _onCamerasUpdated);
     _gpsController = GpsController();
     
+    // Initialize proximity alert service
+    ProximityAlertService().initialize(
+      onVisualAlert: () {
+        if (mounted) {
+          setState(() {
+            _showProximityBanner = true;
+          });
+        }
+      },
+    );
+    
     // Load last map position before initializing GPS
     _positionManager.loadLastMapPosition().then((_) {
       // Move to last known position after loading and widget is built
@@ -93,6 +109,59 @@ class MapViewState extends State<MapView> {
         }
         return FollowMeMode.off;
       },
+      getProximityAlertsEnabled: () {
+        if (mounted) {
+          try {
+            return context.read<AppState>().proximityAlertsEnabled;
+          } catch (e) {
+            debugPrint('[MapView] Could not read proximity alerts enabled: $e');
+            return false;
+          }
+        }
+        return false;
+      },
+      getProximityAlertDistance: () {
+        if (mounted) {
+          try {
+            return context.read<AppState>().proximityAlertDistance;
+          } catch (e) {
+            debugPrint('[MapView] Could not read proximity alert distance: $e');
+            return 200;
+          }
+        }
+        return 200;
+      },
+      getNearbyNodes: () {
+        if (mounted) {
+          try {
+            final cameraProvider = context.read<CameraProviderWithCache>();
+            LatLngBounds? mapBounds;
+            try {
+              mapBounds = _controller.mapController.camera.visibleBounds;
+            } catch (_) {
+              return [];
+            }
+            return mapBounds != null 
+                ? cameraProvider.getCachedNodesForBounds(mapBounds)
+                : [];
+          } catch (e) {
+            debugPrint('[MapView] Could not get nearby nodes: $e');
+            return [];
+          }
+        }
+        return [];
+      },
+      getEnabledProfiles: () {
+        if (mounted) {
+          try {
+            return context.read<AppState>().enabledProfiles;
+          } catch (e) {
+            debugPrint('[MapView] Could not read enabled profiles: $e');
+            return [];
+          }
+        }
+        return [];
+      },
     );
 
     // Fetch initial cameras
@@ -265,7 +334,7 @@ class MapViewState extends State<MapView> {
         }
         final cameras = (mapBounds != null)
             ? cameraProvider.getCachedNodesForBounds(mapBounds)
-            : <OsmCameraNode>[];
+            : <OsmNode>[];
         
         final markers = CameraMarkersBuilder.buildCameraMarkers(
           cameras: cameras,
@@ -402,12 +471,22 @@ class MapViewState extends State<MapView> {
 
         // Network status indicator (top-left)
         const NetworkStatusIndicator(),
+        
+        // Proximity alert banner (top)
+        ProximityAlertBanner(
+          isVisible: _showProximityBanner,
+          onDismiss: () {
+            setState(() {
+              _showProximityBanner = false;
+            });
+          },
+        ),
       ],
     );
   }
 
   /// Build polylines connecting original cameras to their edited positions
-  List<Polyline> _buildEditLines(List<OsmCameraNode> cameras) {
+  List<Polyline> _buildEditLines(List<OsmNode> cameras) {
     final lines = <Polyline>[];
     
     // Create a lookup map of original node IDs to their coordinates

lib/widgets/node_tag_sheet.dart

@@ -1,11 +1,11 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
-import '../models/osm_camera_node.dart';
+import '../models/osm_node.dart';
 import '../app_state.dart';
 import '../services/localization_service.dart';
 
 class NodeTagSheet extends StatelessWidget {
-  final OsmCameraNode node;
+  final OsmNode node;
 
   const NodeTagSheet({super.key, required this.node});
 

lib/widgets/proximity_alert_banner.dart

@@ -0,0 +1,135 @@
+import 'package:flutter/material.dart';
+
+/// Simple red banner that flashes briefly when proximity alert is triggered
+/// Follows brutalist principles: simple, explicit functionality
+class ProximityAlertBanner extends StatefulWidget {
+  final bool isVisible;
+  final VoidCallback? onDismiss;
+  
+  const ProximityAlertBanner({
+    super.key,
+    required this.isVisible,
+    this.onDismiss,
+  });
+
+  @override
+  State<ProximityAlertBanner> createState() => _ProximityAlertBannerState();
+}
+
+class _ProximityAlertBannerState extends State<ProximityAlertBanner>
+    with SingleTickerProviderStateMixin {
+  late AnimationController _controller;
+  late Animation<double> _animation;
+
+  @override
+  void initState() {
+    super.initState();
+    _controller = AnimationController(
+      duration: const Duration(milliseconds: 300),
+      vsync: this,
+    );
+    _animation = CurvedAnimation(
+      parent: _controller,
+      curve: Curves.easeOut,
+    );
+  }
+
+  @override
+  void didUpdateWidget(ProximityAlertBanner oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    
+    if (widget.isVisible != oldWidget.isVisible) {
+      if (widget.isVisible) {
+        _controller.forward();
+        // Auto-hide after 3 seconds
+        Future.delayed(const Duration(seconds: 3), () {
+          if (mounted) {
+            _controller.reverse().then((_) {
+              widget.onDismiss?.call();
+            });
+          }
+        });
+      } else {
+        _controller.reverse();
+      }
+    }
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return AnimatedBuilder(
+      animation: _animation,
+      builder: (context, child) {
+        if (_animation.value == 0.0) {
+          return const SizedBox.shrink();
+        }
+        
+        return Positioned(
+          top: MediaQuery.of(context).padding.top,
+          left: 0,
+          right: 0,
+          child: Transform.translate(
+            offset: Offset(0, -60 * (1 - _animation.value)),
+            child: Container(
+              height: 60,
+              decoration: BoxDecoration(
+                color: Colors.red.shade600,
+                boxShadow: [
+                  BoxShadow(
+                    color: Colors.black.withOpacity(0.3),
+                    blurRadius: 10,
+                    offset: const Offset(0, 2),
+                  ),
+                ],
+              ),
+              child: Material(
+                color: Colors.transparent,
+                child: InkWell(
+                  onTap: () {
+                    _controller.reverse().then((_) {
+                      widget.onDismiss?.call();
+                    });
+                  },
+                  child: Padding(
+                    padding: const EdgeInsets.symmetric(horizontal: 16),
+                    child: Row(
+                      children: [
+                        const Icon(
+                          Icons.warning,
+                          color: Colors.white,
+                          size: 24,
+                        ),
+                        const SizedBox(width: 12),
+                        const Expanded(
+                          child: Text(
+                            'Surveillance device nearby',
+                            style: TextStyle(
+                              color: Colors.white,
+                              fontSize: 16,
+                              fontWeight: FontWeight.w600,
+                            ),
+                          ),
+                        ),
+                        const Icon(
+                          Icons.close,
+                          color: Colors.white,
+                          size: 20,
+                        ),
+                      ],
+                    ),
+                  ),
+                ),
+              ),
+            ),
+          ),
+        );
+      },
+    );
+  }
+}

lib/widgets/refine_tags_sheet.dart

@@ -3,6 +3,7 @@ import 'package:provider/provider.dart';
 
 import '../app_state.dart';
 import '../models/operator_profile.dart';
+import '../services/localization_service.dart';
 
 class RefineTagsSheet extends StatefulWidget {
   const RefineTagsSheet({
@@ -29,10 +30,11 @@ class _RefineTagsSheetState extends State<RefineTagsSheet> {
   Widget build(BuildContext context) {
     final appState = context.watch<AppState>();
     final operatorProfiles = appState.operatorProfiles;
+    final locService = LocalizationService.instance;
 
     return Scaffold(
       appBar: AppBar(
-        title: const Text('Refine Tags'),
+        title: Text(locService.t('refineTagsSheet.title')),
         leading: IconButton(
           icon: const Icon(Icons.close),
           onPressed: () => Navigator.pop(context, widget.selectedOperatorProfile),
@@ -40,34 +42,34 @@ class _RefineTagsSheetState extends State<RefineTagsSheet> {
         actions: [
           TextButton(
             onPressed: () => Navigator.pop(context, _selectedOperatorProfile),
-            child: const Text('Done'),
+            child: Text(locService.t('refineTagsSheet.done')),
           ),
         ],
       ),
       body: ListView(
         padding: const EdgeInsets.all(16),
         children: [
-          const Text(
-            'Operator Profile',
-            style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold),
+          Text(
+            locService.t('refineTagsSheet.operatorProfile'),
+            style: const TextStyle(fontSize: 16, fontWeight: FontWeight.bold),
           ),
           const SizedBox(height: 8),
           if (operatorProfiles.isEmpty)
-            const Card(
+            Card(
               child: Padding(
-                padding: EdgeInsets.all(16.0),
+                padding: const EdgeInsets.all(16.0),
                 child: Column(
                   children: [
-                    Icon(Icons.info_outline, color: Colors.grey, size: 48),
-                    SizedBox(height: 8),
+                    const Icon(Icons.info_outline, color: Colors.grey, size: 48),
+                    const SizedBox(height: 8),
                     Text(
-                      'No operator profiles defined',
-                      style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold),
+                      locService.t('refineTagsSheet.noOperatorProfiles'),
+                      style: const TextStyle(fontSize: 16, fontWeight: FontWeight.bold),
                     ),
-                    SizedBox(height: 4),
+                    const SizedBox(height: 4),
                     Text(
-                      'Create operator profiles in Settings to apply additional tags to your node submissions.',
-                      style: TextStyle(color: Colors.grey),
+                      locService.t('refineTagsSheet.noOperatorProfilesMessage'),
+                      style: const TextStyle(color: Colors.grey),
                       textAlign: TextAlign.center,
                     ),
                   ],
@@ -79,15 +81,15 @@ class _RefineTagsSheetState extends State<RefineTagsSheet> {
               child: Column(
                 children: [
                   RadioListTile<OperatorProfile?>(
-                    title: const Text('None'),
-                    subtitle: const Text('No additional operator tags'),
+                    title: Text(locService.t('refineTagsSheet.none')),
+                    subtitle: Text(locService.t('refineTagsSheet.noAdditionalOperatorTags')),
                     value: null,
                     groupValue: _selectedOperatorProfile,
                     onChanged: (value) => setState(() => _selectedOperatorProfile = value),
                   ),
                   ...operatorProfiles.map((profile) => RadioListTile<OperatorProfile?>(
                     title: Text(profile.name),
-                    subtitle: Text('${profile.tags.length} additional tags'),
+                    subtitle: Text('${profile.tags.length} ${locService.t('refineTagsSheet.additionalTags')}'),
                     value: profile,
                     groupValue: _selectedOperatorProfile,
                     onChanged: (value) => setState(() => _selectedOperatorProfile = value),
@@ -97,9 +99,9 @@ class _RefineTagsSheetState extends State<RefineTagsSheet> {
             ),
             const SizedBox(height: 16),
             if (_selectedOperatorProfile != null) ...[
-              const Text(
-                'Additional Tags',
-                style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold),
+              Text(
+                locService.t('refineTagsSheet.additionalTagsTitle'),
+                style: const TextStyle(fontSize: 16, fontWeight: FontWeight.bold),
               ),
               const SizedBox(height: 8),
               Card(
@@ -114,9 +116,9 @@ class _RefineTagsSheetState extends State<RefineTagsSheet> {
                       ),
                       const SizedBox(height: 8),
                       if (_selectedOperatorProfile!.tags.isEmpty)
-                        const Text(
-                          'No tags defined for this operator profile.',
-                          style: TextStyle(color: Colors.grey),
+                        Text(
+                          locService.t('refineTagsSheet.noTagsDefinedForProfile'),
+                          style: const TextStyle(color: Colors.grey),
                         )
                       else
                         ...(_selectedOperatorProfile!.tags.entries.map((entry) => 

pubspec.lock

@@ -105,6 +105,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.0.0"
+  dbus:
+    dependency: transitive
+    description:
+      name: dbus
+      sha256: "79e0c23480ff85dc68de79e2cd6334add97e48f7f4865d17686dd6ea81a47e8c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.7.11"
   desktop_webview_window:
     dependency: transitive
     description:
@@ -150,6 +158,30 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.14.4"
+  flutter_local_notifications:
+    dependency: "direct main"
+    description:
+      name: flutter_local_notifications
+      sha256: "674173fd3c9eda9d4c8528da2ce0ea69f161577495a9cc835a2a4ecd7eadeb35"
+      url: "https://pub.dev"
+    source: hosted
+    version: "17.2.4"
+  flutter_local_notifications_linux:
+    dependency: transitive
+    description:
+      name: flutter_local_notifications_linux
+      sha256: c49bd06165cad9beeb79090b18cd1eb0296f4bf4b23b84426e37dd7c027fc3af
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.1"
+  flutter_local_notifications_platform_interface:
+    dependency: transitive
+    description:
+      name: flutter_local_notifications_platform_interface
+      sha256: "85f8d07fe708c1bdcf45037f2c0109753b26ae077e9d9e899d55971711a4ea66"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.2.0"
   flutter_map:
     dependency: "direct main"
     description:
@@ -624,6 +656,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.2.2"
+  timezone:
+    dependency: transitive
+    description:
+      name: timezone
+      sha256: "2236ec079a174ce07434e89fcd3fcda430025eb7692244139a9cf54fdcf1fc7d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.4"
   typed_data:
     dependency: transitive
     description:

pubspec.yaml

@@ -19,6 +19,7 @@ dependencies:
   http: ^1.2.1
   flutter_svg: ^2.0.10
   xml: ^6.4.2
+  flutter_local_notifications: ^17.2.2
 
   # Auth, storage, prefs
   oauth2_client: ^4.2.0