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/react-native/Libraries/ReactNative/requireNativeComponent.js

@@ -0,0 +1,32 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ * @format
+ */
+
+'use strict';
+
+import type {HostComponent} from '../Renderer/shims/ReactNativeTypes';
+
+const createReactNativeComponentClass = require('../Renderer/shims/createReactNativeComponentClass');
+const getNativeComponentAttributes = require('./getNativeComponentAttributes');
+
+/**
+ * Creates values that can be used like React components which represent native
+ * view managers. You should create JavaScript modules that wrap these values so
+ * that the results are memoized. Example:
+ *
+ *   const View = requireNativeComponent('RCTView');
+ *
+ */
+
+const requireNativeComponent = <T>(uiViewClassName: string): HostComponent<T> =>
+  ((createReactNativeComponentClass(uiViewClassName, () =>
+    getNativeComponentAttributes(uiViewClassName),
+  ): any): HostComponent<T>);
+
+export default requireNativeComponent;