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/Components/Keyboard/Keyboard.d.ts

@@ -0,0 +1,109 @@
+/**
+ * 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.
+ *
+ * @format
+ */
+
+import {NativeEventEmitter} from '../../EventEmitter/NativeEventEmitter';
+import {EmitterSubscription} from '../../vendor/emitter/EventEmitter';
+
+export type KeyboardEventName =
+  | 'keyboardWillShow'
+  | 'keyboardDidShow'
+  | 'keyboardWillHide'
+  | 'keyboardDidHide'
+  | 'keyboardWillChangeFrame'
+  | 'keyboardDidChangeFrame';
+
+export type KeyboardEventEasing =
+  | 'easeIn'
+  | 'easeInEaseOut'
+  | 'easeOut'
+  | 'linear'
+  | 'keyboard';
+
+type KeyboardMetrics = {
+  screenX: number;
+  screenY: number;
+  width: number;
+  height: number;
+};
+
+interface KeyboardEventIOS {
+  /**
+   * @platform ios
+   */
+  startCoordinates: KeyboardMetrics;
+  /**
+   * @platform ios
+   */
+  isEventFromThisApp: boolean;
+}
+
+export interface KeyboardEvent extends Partial<KeyboardEventIOS> {
+  /**
+   * Always set to 0 on Android.
+   */
+  duration: number;
+  /**
+   * Always set to "keyboard" on Android.
+   */
+  easing: KeyboardEventEasing;
+  endCoordinates: KeyboardMetrics;
+}
+
+type KeyboardEventListener = (event: KeyboardEvent) => void;
+
+export interface KeyboardStatic extends NativeEventEmitter {
+  /**
+   * Dismisses the active keyboard and removes focus.
+   */
+  dismiss: () => void;
+  /**
+   * The `addListener` function connects a JavaScript function to an identified native
+   * keyboard notification event.
+   *
+   * This function then returns the reference to the listener.
+   *
+   * {string} eventName The `nativeEvent` is the string that identifies the event you're listening for.  This
+   *can be any of the following:
+   *
+   * - `keyboardWillShow`
+   * - `keyboardDidShow`
+   * - `keyboardWillHide`
+   * - `keyboardDidHide`
+   * - `keyboardWillChangeFrame`
+   * - `keyboardDidChangeFrame`
+   *
+   * Note that if you set `android:windowSoftInputMode` to `adjustResize`  or `adjustNothing`,
+   * only `keyboardDidShow` and `keyboardDidHide` events will be available on Android.
+   * `keyboardWillShow` as well as `keyboardWillHide` are generally not available on Android
+   * since there is no native corresponding event.
+   *
+   * {function} callback function to be called when the event fires.
+   */
+  addListener: (
+    eventType: KeyboardEventName,
+    listener: KeyboardEventListener,
+  ) => EmitterSubscription;
+  /**
+   * Useful for syncing TextInput (or other keyboard accessory view) size of
+   * position changes with keyboard movements.
+   */
+  scheduleLayoutAnimation: (event: KeyboardEvent) => void;
+
+  /**
+   * Whether the keyboard is last known to be visible.
+   */
+  isVisible(): boolean;
+
+  /**
+   * Return the metrics of the soft-keyboard if visible.
+   */
+  metrics(): KeyboardMetrics | undefined;
+}
+
+export const Keyboard: KeyboardStatic;