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/plugin-proposal-export-default-from/lib/index.js

@@ -0,0 +1,37 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+var _helperPluginUtils = require("@babel/helper-plugin-utils");
+var _core = require("@babel/core");
+var _default = exports.default = (0, _helperPluginUtils.declare)(api => {
+  api.assertVersion(7);
+  return {
+    name: "proposal-export-default-from",
+    manipulateOptions: (_, parser) => parser.plugins.push("exportDefaultFrom"),
+    visitor: {
+      ExportNamedDeclaration(path) {
+        const {
+          node
+        } = path;
+        const {
+          specifiers,
+          source
+        } = node;
+        if (!_core.types.isExportDefaultSpecifier(specifiers[0])) return;
+        const {
+          exported
+        } = specifiers.shift();
+        if (specifiers.every(s => _core.types.isExportSpecifier(s))) {
+          specifiers.unshift(_core.types.exportSpecifier(_core.types.identifier("default"), exported));
+          return;
+        }
+        path.insertBefore(_core.types.exportNamedDeclaration(null, [_core.types.exportSpecifier(_core.types.identifier("default"), exported)], _core.types.cloneNode(source)));
+      }
+    }
+  };
+});
+
+//# sourceMappingURL=index.js.map

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