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/is-number-object/test/index.js

@@ -0,0 +1,40 @@
+'use strict';
+
+var test = require('tape');
+var isNumber = require('../');
+var hasToStringTag = require('has-tostringtag/shams')();
+
+test('not Numbers', function (t) {
+	// @ts-expect-error
+	t.notOk(isNumber(), 'undefined is not Number');
+	t.notOk(isNumber(null), 'null is not Number');
+	t.notOk(isNumber(false), 'false is not Number');
+	t.notOk(isNumber(true), 'true is not Number');
+	t.notOk(isNumber('foo'), 'string is not Number');
+	t.notOk(isNumber([]), 'array is not Number');
+	t.notOk(isNumber({}), 'object is not Number');
+	t.notOk(isNumber(function () {}), 'function is not Number');
+	t.notOk(isNumber(/a/g), 'regex literal is not Number');
+	t.notOk(isNumber(new RegExp('a', 'g')), 'regex object is not Number');
+	t.notOk(isNumber(new Date()), 'new Date() is not Number');
+	t.end();
+});
+
+test('@@toStringTag', { skip: !hasToStringTag }, function (t) {
+	/** @type {{ toString(): string; valueOf(): number; [Symbol.toStringTag]?: string; }} */
+	var fakeNumber = {
+		toString: function () { return '7'; },
+		valueOf: function () { return 42; }
+	};
+	fakeNumber[Symbol.toStringTag] = 'Number';
+	t.notOk(isNumber(fakeNumber), 'fake Number with @@toStringTag "Number" is not Number');
+	t.end();
+});
+
+test('Numbers', function (t) {
+	t.ok(isNumber(42), 'number is Number');
+	t.ok(isNumber(Object(42)), 'number object is Number');
+	t.ok(isNumber(NaN), 'NaN is Number');
+	t.ok(isNumber(Infinity), 'Infinity is Number');
+	t.end();
+});