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/jest-validate/build/warnings.js

@@ -0,0 +1,41 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true
+});
+exports.unknownOptionWarning = void 0;
+function _chalk() {
+  const data = _interopRequireDefault(require('chalk'));
+  _chalk = function () {
+    return data;
+  };
+  return data;
+}
+var _utils = require('./utils');
+function _interopRequireDefault(obj) {
+  return obj && obj.__esModule ? obj : {default: obj};
+}
+/**
+ * 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.
+ */
+
+const unknownOptionWarning = (config, exampleConfig, option, options, path) => {
+  const didYouMean = (0, _utils.createDidYouMeanMessage)(
+    option,
+    Object.keys(exampleConfig)
+  );
+  const message = `  Unknown option ${_chalk().default.bold(
+    `"${path && path.length > 0 ? `${path.join('.')}.` : ''}${option}"`
+  )} with value ${_chalk().default.bold(
+    (0, _utils.format)(config[option])
+  )} was found.${
+    didYouMean && ` ${didYouMean}`
+  }\n  This is probably a typing mistake. Fixing it will remove this message.`;
+  const comment = options.comment;
+  const name = (options.title && options.title.warning) || _utils.WARNING;
+  (0, _utils.logValidationWarning)(name, message, comment);
+};
+exports.unknownOptionWarning = unknownOptionWarning;