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/es-abstract/2024/IsFixedLengthArrayBuffer.js

@@ -0,0 +1,29 @@
+'use strict';
+
+var $TypeError = require('es-errors/type');
+
+var callBound = require('call-bound');
+
+var $arrayBufferResizable = callBound('%ArrayBuffer.prototype.resizable%', true);
+var $sharedArrayGrowable = callBound('%SharedArrayBuffer.prototype.growable%', true);
+
+var isArrayBuffer = require('is-array-buffer');
+var isSharedArrayBuffer = require('is-shared-array-buffer');
+
+// https://262.ecma-international.org/15.0/#sec-isfixedlengtharraybuffer
+
+module.exports = function IsFixedLengthArrayBuffer(arrayBuffer) {
+	var isAB = isArrayBuffer(arrayBuffer);
+	var isSAB = isSharedArrayBuffer(arrayBuffer);
+	if (!isAB && !isSAB) {
+		throw new $TypeError('Assertion failed: `arrayBuffer` must be an ArrayBuffer or SharedArrayBuffer');
+	}
+
+	if (isAB && $arrayBufferResizable) {
+		return !$arrayBufferResizable(arrayBuffer); // step 1
+	}
+	if (isSAB && $sharedArrayGrowable) {
+		return !$sharedArrayGrowable(arrayBuffer); // step 1
+	}
+	return true; // step 2
+};