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/asynckit/lib/state.js

@@ -0,0 +1,37 @@
+// API
+module.exports = state;
+
+/**
+ * Creates initial state object
+ * for iteration over list
+ *
+ * @param   {array|object} list - list to iterate over
+ * @param   {function|null} sortMethod - function to use for keys sort,
+ *                                     or `null` to keep them as is
+ * @returns {object} - initial state object
+ */
+function state(list, sortMethod)
+{
+  var isNamedList = !Array.isArray(list)
+    , initState =
+    {
+      index    : 0,
+      keyedList: isNamedList || sortMethod ? Object.keys(list) : null,
+      jobs     : {},
+      results  : isNamedList ? {} : [],
+      size     : isNamedList ? Object.keys(list).length : list.length
+    }
+    ;
+
+  if (sortMethod)
+  {
+    // sort array keys based on it's values
+    // sort object's keys just on own merit
+    initState.keyedList.sort(isNamedList ? sortMethod : function(a, b)
+    {
+      return sortMethod(list[a], list[b]);
+    });
+  }
+
+  return initState;
+}