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/Building/EXNotificationBuilder.h

@@ -0,0 +1,19 @@
+// Copyright 2018-present 650 Industries. All rights reserved.
+
+#import <ExpoModulesCore/EXInternalModule.h>
+
+#import <UserNotifications/UserNotifications.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@protocol EXNotificationBuilder
+
+- (UNMutableNotificationContent *)notificationContentFromRequest:(NSDictionary *)request;
+
+@end
+
+@interface EXNotificationBuilder : NSObject <EXInternalModule, EXNotificationBuilder>
+
+@end
+
+NS_ASSUME_NONNULL_END

smart-app-city/frontend/node_modules/expo-notifications/ios/EXNotifications/Building/EXNotificationBuilder.m

@@ -0,0 +1,111 @@
+// Copyright 2018-present 650 Industries. All rights reserved.
+
+#import <ExpoModulesCore/EXDefines.h>
+#import <EXNotifications/EXNotificationBuilder.h>
+#import <EXNotifications/NSDictionary+EXNotificationsVerifyingClass.h>
+
+@implementation EXNotificationBuilder
+
+EX_REGISTER_MODULE();
+
++ (const NSArray<Protocol *> *)exportedInterfaces
+{
+  return @[@protocol(EXNotificationBuilder)];
+}
+
+- (UNMutableNotificationContent *)notificationContentFromRequest:(NSDictionary *)request
+{
+  UNMutableNotificationContent *content = [UNMutableNotificationContent new];
+  [content setTitle:[request objectForKey:@"title" verifyingClass:[NSString class]]];
+  [content setSubtitle:[request objectForKey:@"subtitle" verifyingClass:[NSString class]]];
+  [content setBody:[request objectForKey:@"body" verifyingClass:[NSString class]]];
+  [content setLaunchImageName:[request objectForKey:@"launchImageName" verifyingClass:[NSString class]]];
+  [content setBadge:[request objectForKey:@"badge" verifyingClass:[NSNumber class]]];
+  [content setUserInfo:[request objectForKey:@"data" verifyingClass:[NSDictionary class]]];
+  [content setCategoryIdentifier:[request objectForKey:@"categoryIdentifier" verifyingClass:[NSString class]]];
+  if ([request[@"sound"] isKindOfClass:[NSNumber class]]) {
+    [content setSound:[request[@"sound"] boolValue] ? [UNNotificationSound defaultSound] : nil];
+  } else if ([request[@"sound"] isKindOfClass:[NSString class]]) {
+    NSString *soundName = request[@"sound"];
+    if ([@"default" isEqualToString:soundName]) {
+      [content setSound:[UNNotificationSound defaultSound]];
+    } else if ([@"defaultCritical" isEqualToString:soundName]) {
+      if (@available(iOS 12.0, *)) {
+        [content setSound:[UNNotificationSound defaultCriticalSound]];
+      } else {
+        [content setSound:[UNNotificationSound defaultSound]];
+      }
+    } else {
+      [content setSound:[UNNotificationSound soundNamed:soundName]];
+    }
+  }
+  NSMutableArray<UNNotificationAttachment *> *attachments = [NSMutableArray new];
+  [[request objectForKey:@"attachments" verifyingClass:[NSArray class]] enumerateObjectsUsingBlock:^(NSDictionary * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
+    UNNotificationAttachment *attachment = [self attachmentFromRequest:obj];
+    if (attachment) {
+      [attachments addObject:attachment];
+    }
+  }];
+  [content setAttachments:attachments];
+  if (@available(iOS 15.0, *)) {
+    NSString *interruptionLevel = [request objectForKey:@"interruptionLevel" verifyingClass:[NSString class]];
+    if (interruptionLevel) {
+      content.interruptionLevel = [EXNotificationBuilder deserializeInterruptionLevel:interruptionLevel];
+    }
+  }
+  return content;
+}
+
++ (UNNotificationInterruptionLevel)deserializeInterruptionLevel:(NSString *)interruptionLevel API_AVAILABLE(ios(15.0)) {
+  static NSDictionary *interruptionLevelMap;
+  if (!interruptionLevelMap) {
+    interruptionLevelMap = @{
+      @"passive": @(UNNotificationInterruptionLevelPassive),
+      @"active": @(UNNotificationInterruptionLevelActive),
+      @"timeSensitive": @(UNNotificationInterruptionLevelTimeSensitive),
+      @"critical": @(UNNotificationInterruptionLevelCritical)
+    };
+  }
+  
+  return [interruptionLevelMap[interruptionLevel] integerValue];
+}
+
+- (UNNotificationAttachment *)attachmentFromRequest:(NSDictionary *)request
+{
+  NSString *identifier = [request objectForKey:@"identifier" verifyingClass:[NSString class]] ?: @"";
+  NSURL *uri = [NSURL URLWithString:[request objectForKey:@"uri" verifyingClass:[NSString class]]];
+  NSError *error = nil;
+  UNNotificationAttachment *attachment = [UNNotificationAttachment attachmentWithIdentifier:identifier URL:uri options:[self attachmentOptionsFromRequest:request] error:&error];
+  if (error) {
+    EXLogWarn(@"[expo-notifications] Could not have created a notification attachment out of request: %@. Error: %@.", [request description], [error description]);
+    return nil;
+  }
+  return attachment;
+}
+
+- (NSDictionary *)attachmentOptionsFromRequest:(NSDictionary *)request
+{
+  NSMutableDictionary *options = [NSMutableDictionary new];
+  if ([request objectForKey:@"typeHint" verifyingClass:[NSString class]]) {
+    options[UNNotificationAttachmentOptionsTypeHintKey] = request[@"typeHint"];
+  }
+  if ([request objectForKey:@"hideThumbnail" verifyingClass:[NSNumber class]]) {
+    options[UNNotificationAttachmentOptionsThumbnailHiddenKey] = request[@"hideThumbnail"];
+  }
+  if ([request objectForKey:@"thumbnailClipArea" verifyingClass:[NSDictionary class]]) {
+    NSDictionary *area = request[@"thumbnailClipArea"];
+    NSNumber *x = [area objectForKey:@"x" verifyingClass:[NSNumber class]];
+    NSNumber *y = [area objectForKey:@"y" verifyingClass:[NSNumber class]];
+    NSNumber *width = [area objectForKey:@"width" verifyingClass:[NSNumber class]];
+    NSNumber *height = [area objectForKey:@"height" verifyingClass:[NSNumber class]];
+    CGRect areaRect = CGRectMake([x doubleValue], [y doubleValue], [width doubleValue], [height doubleValue]);
+    options[UNNotificationAttachmentOptionsThumbnailClippingRectKey] = (__bridge id _Nullable)(CGRectCreateDictionaryRepresentation(areaRect));
+  }
+  if ([request objectForKey:@"thumbnailTime" verifyingClass:[NSNumber class]]) {
+    options[UNNotificationAttachmentOptionsThumbnailTimeKey] = request[@"thumbnailTime"];
+  }
+  return options;
+}
+
+@end
+