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/babel-preset-expo/build/web-preset.js

@@ -0,0 +1,73 @@
+"use strict";
+/**
+ * Copyright © 2024 650 Industries.
+ * 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.
+ *
+ * A fork of `@react-native/babel-preset` but with everything unrelated to web/ssr removed.
+ * https://github.com/facebook/react-native/blob/2af1da42ff517232f1309efed7565fe9ddbbac77/packages/react-native-babel-preset/src/configs/main.js#L1
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+// use `this.foo = bar` instead of `this.defineProperty('foo', ...)`
+const loose = true;
+const defaultPlugins = [
+    [require('@babel/plugin-syntax-flow')],
+    [require('babel-plugin-transform-flow-enums')],
+    [require('@babel/plugin-transform-private-methods'), { loose }],
+    [require('@babel/plugin-transform-private-property-in-object'), { loose }],
+    // [require('@babel/plugin-syntax-dynamic-import')],
+    [require('@babel/plugin-syntax-export-default-from')],
+    // [require('@babel/plugin-syntax-nullish-coalescing-operator')],
+    // [require('@babel/plugin-syntax-optional-chaining')],
+    // [require('@babel/plugin-transform-unicode-regex')],
+];
+module.exports = function (babel, options) {
+    const extraPlugins = [];
+    // NOTE: We also remove `@react-native/babel-plugin-codegen` since it doesn't seem needed on web.
+    if (!options || !options.disableImportExportTransform) {
+        extraPlugins.push([require('@babel/plugin-proposal-export-default-from')], [
+            require('@babel/plugin-transform-modules-commonjs'),
+            {
+                strict: false,
+                strictMode: false,
+                lazy: options.lazyImportExportTransform,
+                allowTopLevelThis: true, // dont rewrite global `this` -> `undefined`
+            },
+        ]);
+    }
+    if (!options || options.enableBabelRuntime !== false) {
+        // Allows configuring a specific runtime version to optimize output
+        const isVersion = typeof options?.enableBabelRuntime === 'string';
+        extraPlugins.push([
+            require('@babel/plugin-transform-runtime'),
+            {
+                helpers: true,
+                regenerator: false,
+                ...(isVersion && { version: options.enableBabelRuntime }),
+            },
+        ]);
+    }
+    return {
+        comments: false,
+        compact: true,
+        presets: [
+            // TypeScript support
+            [require('@babel/preset-typescript'), { allowNamespaces: true }],
+        ],
+        overrides: [
+            // the flow strip types plugin must go BEFORE class properties!
+            // there'll be a test case that fails if you don't.
+            {
+                plugins: [require('@babel/plugin-transform-flow-strip-types')],
+            },
+            {
+                plugins: defaultPlugins,
+            },
+            {
+                plugins: extraPlugins,
+            },
+        ],
+    };
+};