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/build/launch/registerRootComponent.js

@@ -0,0 +1,24 @@
+import '../Expo.fx';
+import { AppRegistry, Platform } from 'react-native';
+export default function registerRootComponent(component) {
+    let qualifiedComponent = component;
+    if (process.env.NODE_ENV !== 'production') {
+        const { withDevTools } = require('./withDevTools');
+        qualifiedComponent = withDevTools(component);
+    }
+    AppRegistry.registerComponent('main', () => qualifiedComponent);
+    // Skip querying the DOM if we're in a Node.js environment.
+    if (Platform.OS === 'web' && typeof window !== 'undefined') {
+        const rootTag = document.getElementById('root');
+        if (process.env.NODE_ENV !== 'production') {
+            if (!rootTag) {
+                throw new Error('Required HTML element with id "root" was not found in the document HTML.');
+            }
+        }
+        AppRegistry.runApplication('main', {
+            rootTag,
+            hydrate: process.env.EXPO_PUBLIC_USE_STATIC === '1',
+        });
+    }
+}
+//# sourceMappingURL=registerRootComponent.js.map