feat(smart-app): implement complete mobile app MVP

- App.tsx: full navigation (Auth stack + Main tabs with 5 screens)
- Auth: LoginScreen, RegisterScreen, ForgotPasswordScreen
- HomeScreen: dashboard with IoT metrics, weather widget, alerts, quick actions, sensors
- MapScreen: interactive map with layer toggles (6 layers)
- MarketplaceScreen: categories (6), products (5), search
- ChatScreen: AI chat with quick prompts (4), bot responses
- ProfileScreen: user info, stats, menu (9 items), logout
- AlertsScreen: alert list with severity, acknowledge
- SensorsScreen: sensor list with type filters (6 types), search
- ZonesScreen: zone cards with stats
- SettingsScreen: language picker (FR/EN/ES/DE), privacy, about
- Stores: iotStore (sensors, zones, alerts), notificationStore, uiStore + i18n
- Hooks: useSensors, useAlerts, useNotifications, useLocation
- Components: Card, Button, LoadingSpinner, ErrorBoundary, Header
- Services: iotService, notificationService (with axios API client)
- Utils: formatters (temp, AQI, noise, dates), validators (email, password, IBAN)
- Theme: colors.ts with full design system (Blue Ocean palette)
- Ditto: fixed MongoDB connection, new JWT secrets, official gateway image

smart-app-city/frontend/node_modules/expo-notifications/ios/EXNotifications/Notifications/Emitter/EXNotificationsEmitter.h

@@ -0,0 +1,18 @@
+// Copyright 2018-present 650 Industries. All rights reserved.
+
+#import <ExpoModulesCore/EXExportedModule.h>
+#import <ExpoModulesCore/EXEventEmitter.h>
+#import <ExpoModulesCore/EXModuleRegistryConsumer.h>
+#import <ExpoModulesCore/EXEventEmitterService.h>
+
+#import <EXNotifications/EXNotificationsDelegate.h>
+
+static NSString * const onDidReceiveNotification = @"onDidReceiveNotification";
+static NSString * const onDidReceiveNotificationResponse = @"onDidReceiveNotificationResponse";
+static NSString * const onDidClearNotificationResponse = @"onDidClearNotificationResponse";
+
+@interface EXNotificationsEmitter : EXExportedModule <EXEventEmitter, EXModuleRegistryConsumer, EXNotificationsDelegate>
+
+@property (nonatomic, weak, readonly) id<EXEventEmitterService> eventEmitter;
+
+@end

smart-app-city/frontend/node_modules/expo-notifications/ios/EXNotifications/Notifications/Emitter/EXNotificationsEmitter.m

@@ -0,0 +1,120 @@
+// Copyright 2018-present 650 Industries. All rights reserved.
+
+#import <EXNotifications/EXNotificationsEmitter.h>
+#import <EXNotifications/EXNotificationSerializer.h>
+#import <EXNotifications/EXNotificationCenterDelegate.h>
+
+#import <ExpoModulesCore/EXEventEmitterService.h>
+
+@interface EXNotificationsEmitter ()
+
+@property (nonatomic, weak) id<EXNotificationCenterDelegate> notificationCenterDelegate;
+
+@property (nonatomic, assign) BOOL isBeingObserved;
+@property (nonatomic, assign) BOOL isListening;
+
+@property (nonatomic, weak) id<EXEventEmitterService> eventEmitter;
+
+@end
+
+@implementation EXNotificationsEmitter
+
+EX_EXPORT_MODULE(ExpoNotificationsEmitter);
+
+EX_EXPORT_METHOD_AS(getLastNotificationResponseAsync,
+                    getLastNotificationResponseAsyncWithResolver:(EXPromiseResolveBlock)resolve reject:(EXPromiseRejectBlock)reject)
+{
+  UNNotificationResponse* lastResponse = _notificationCenterDelegate.lastNotificationResponse;
+  resolve(lastResponse ? [self serializedNotificationResponse:lastResponse] : [NSNull null]);
+}
+
+EX_EXPORT_METHOD_AS(clearLastNotificationResponseAsync,
+                    clearLastNotificationResponseAsyncWithResolver:(EXPromiseResolveBlock)resolve reject:(EXPromiseRejectBlock)reject)
+{
+  _notificationCenterDelegate.lastNotificationResponse = nil;
+  resolve([NSNull null]);
+}
+
+# pragma mark - EXModuleRegistryConsumer
+
+- (void)setModuleRegistry:(EXModuleRegistry *)moduleRegistry
+{
+  _eventEmitter = [moduleRegistry getModuleImplementingProtocol:@protocol(EXEventEmitterService)];
+  _notificationCenterDelegate = [moduleRegistry getSingletonModuleForName:@"NotificationCenterDelegate"];
+}
+
+# pragma mark - EXEventEmitter
+
+- (NSArray<NSString *> *)supportedEvents
+{
+  return @[onDidReceiveNotification, onDidReceiveNotificationResponse, onDidClearNotificationResponse];
+}
+
+- (void)startObserving
+{
+  [self setIsBeingObserved:YES];
+}
+
+- (void)stopObserving
+{
+  [self setIsBeingObserved:NO];
+}
+
+- (void)setIsBeingObserved:(BOOL)isBeingObserved
+{
+  _isBeingObserved = isBeingObserved;
+  BOOL shouldListen = _isBeingObserved;
+  if (shouldListen && !_isListening) {
+    [_notificationCenterDelegate addDelegate:self];
+    _isListening = YES;
+  } else if (!shouldListen && _isListening) {
+    [_notificationCenterDelegate removeDelegate:self];
+    _isListening = NO;
+  }
+}
+
+# pragma mark - EXNotificationsDelegate
+
+- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler
+{
+  // Background task execution would happen here.
+  completionHandler(UIBackgroundFetchResultNoData);
+}
+
+- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void (^)(void))completionHandler
+{
+  _notificationCenterDelegate.lastNotificationResponse = response;
+  [self sendEventWithName:onDidReceiveNotificationResponse body:[self serializedNotificationResponse:response]];
+  completionHandler();
+}
+
+- (void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions))completionHandler
+{
+  [self sendEventWithName:onDidReceiveNotification body:[self serializedNotification:notification]];
+  completionHandler(UNNotificationPresentationOptionNone);
+}
+
+- (void)sendEventWithName:(NSString *)eventName body:(id)body
+{
+  // Silence React Native warning: "Sending ... with no listeners registered."
+  // See: https://github.com/expo/expo/pull/10883#pullrequestreview-529183413
+  // While in practice we don't need to verify this, as as of the end of 2020
+  // we wouldn't send any event to JS if we weren't being observed because
+  // we wouldn't be subscribed to the notification center delegate it's nice
+  // to be sure this problem won't ever arise.
+  if (_isBeingObserved) {
+    [_eventEmitter sendEventWithName:eventName body:body];
+  }
+}
+
+- (NSDictionary *)serializedNotification:(UNNotification *)notification
+{
+  return [EXNotificationSerializer serializedNotification:notification];
+}
+
+- (NSDictionary *)serializedNotificationResponse:(UNNotificationResponse *)notificationResponse
+{
+  return [EXNotificationSerializer serializedNotificationResponse:notificationResponse];
+}
+
+@end