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/TurboModule/TurboModuleRegistry.js

@@ -0,0 +1,89 @@
+/**
+ * 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.
+ *
+ * @flow strict
+ * @format
+ */
+
+import type {TurboModule} from './RCTExport';
+
+import invariant from 'invariant';
+
+const NativeModules = require('../BatchedBridge/NativeModules');
+
+const turboModuleProxy = global.__turboModuleProxy;
+
+const moduleLoadHistory = {
+  NativeModules: ([]: Array<string>),
+  TurboModules: ([]: Array<string>),
+  NotFound: ([]: Array<string>),
+};
+
+function isBridgeless() {
+  return global.RN$Bridgeless === true;
+}
+
+function isTurboModuleInteropEnabled() {
+  return global.RN$TurboInterop === true;
+}
+
+// TODO(154308585): Remove "module not found" debug info logging
+function shouldReportDebugInfo() {
+  return true;
+}
+
+// TODO(148943970): Consider reversing the lookup here:
+// Lookup on __turboModuleProxy, then lookup on nativeModuleProxy
+function requireModule<T: TurboModule>(name: string): ?T {
+  if (!isBridgeless() || isTurboModuleInteropEnabled()) {
+    // Backward compatibility layer during migration.
+    const legacyModule = NativeModules[name];
+    if (legacyModule != null) {
+      if (shouldReportDebugInfo()) {
+        moduleLoadHistory.NativeModules.push(name);
+      }
+      return ((legacyModule: $FlowFixMe): T);
+    }
+  }
+
+  if (turboModuleProxy != null) {
+    const module: ?T = turboModuleProxy(name);
+    if (module != null) {
+      if (shouldReportDebugInfo()) {
+        moduleLoadHistory.TurboModules.push(name);
+      }
+      return module;
+    }
+  }
+
+  if (shouldReportDebugInfo() && !moduleLoadHistory.NotFound.includes(name)) {
+    moduleLoadHistory.NotFound.push(name);
+  }
+  return null;
+}
+
+export function get<T: TurboModule>(name: string): ?T {
+  return requireModule<T>(name);
+}
+
+export function getEnforcing<T: TurboModule>(name: string): T {
+  const module = requireModule<T>(name);
+  let message =
+    `TurboModuleRegistry.getEnforcing(...): '${name}' could not be found. ` +
+    'Verify that a module by this name is registered in the native binary.';
+
+  if (shouldReportDebugInfo()) {
+    message += 'Bridgeless mode: ' + (isBridgeless() ? 'true' : 'false') + '. ';
+    message +=
+      'TurboModule interop: ' +
+      (isTurboModuleInteropEnabled() ? 'true' : 'false') +
+      '. ';
+    message += 'Modules loaded: ' + JSON.stringify(moduleLoadHistory);
+  }
+
+  invariant(module != null, message);
+  return module;
+}