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/get-symbol-description/test/index.js

@@ -0,0 +1,74 @@
+'use strict';
+
+var test = require('tape');
+var debug = require('object-inspect');
+var forEach = require('for-each');
+var hasOwn = require('hasown');
+var v = require('es-value-fixtures');
+
+var getSymbolDescription = require('../');
+var getInferredName = require('../getInferredName');
+
+test('getSymbolDescription', function (t) {
+	t.test('no symbols', { skip: v.hasSymbols }, function (st) {
+		st['throws'](
+			// @ts-expect-error
+			getSymbolDescription,
+			SyntaxError,
+			'requires Symbol support'
+		);
+
+		st.end();
+	});
+
+	forEach([].concat(
+		// @ts-expect-error TS sucks with concat
+		v.nonSymbolPrimitives,
+		v.objects
+	), function (nonSymbol) {
+		t['throws'](
+			function () { getSymbolDescription(nonSymbol); },
+			v.hasSymbols ? TypeError : SyntaxError,
+			debug(nonSymbol) + ' is not a Symbol'
+		);
+	});
+
+	t.test('with symbols', { skip: !v.hasSymbols }, function (st) {
+		forEach(
+			// eslint-disable-next-line no-extra-parens
+			/** @type {[symbol, undefined | string][]} */ ([
+				[Symbol(), undefined],
+				[Symbol(undefined), undefined],
+				// @ts-expect-error
+				[Symbol(null), 'null'],
+				[Symbol.iterator, 'Symbol.iterator'],
+				[Symbol('foo'), 'foo']
+			]),
+			function (pair) {
+				var sym = pair[0];
+				var desc = pair[1];
+				st.equal(getSymbolDescription(sym), desc, debug(sym) + ' description is ' + debug(desc));
+			}
+		);
+
+		st.test('only possible when inference or native `Symbol.prototype.description` is supported', {
+			skip: !getInferredName && !hasOwn(Symbol.prototype, 'description')
+		}, function (s2t) {
+			s2t.equal(getSymbolDescription(Symbol('')), '', 'Symbol("") description is ""');
+
+			s2t.end();
+		});
+
+		st.test('only possible when global symbols are supported', {
+			skip: !hasOwn(Symbol, 'for') || !hasOwn(Symbol, 'keyFor')
+		}, function (s2t) {
+			// eslint-disable-next-line no-restricted-properties
+			s2t.equal(getSymbolDescription(Symbol['for']('')), '', 'Symbol.for("") description is ""');
+			s2t.end();
+		});
+
+		st.end();
+	});
+
+	t.end();
+});