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/dayjs/esm/plugin/advancedFormat/index.d.ts

@@ -0,0 +1,4 @@
+import { PluginFunc } from 'dayjs/esm'
+
+declare const plugin: PluginFunc
+export = plugin

smart-app-city/frontend/node_modules/dayjs/esm/plugin/advancedFormat/index.js

@@ -0,0 +1,66 @@
+import { FORMAT_DEFAULT } from '../../constant';
+export default (function (o, c) {
+  // locale needed later
+  var proto = c.prototype;
+  var oldFormat = proto.format;
+
+  proto.format = function (formatStr) {
+    var _this = this;
+
+    var locale = this.$locale();
+
+    if (!this.isValid()) {
+      return oldFormat.bind(this)(formatStr);
+    }
+
+    var utils = this.$utils();
+    var str = formatStr || FORMAT_DEFAULT;
+    var result = str.replace(/\[([^\]]+)]|Q|wo|ww|w|WW|W|zzz|z|gggg|GGGG|Do|X|x|k{1,2}|S/g, function (match) {
+      switch (match) {
+        case 'Q':
+          return Math.ceil((_this.$M + 1) / 3);
+
+        case 'Do':
+          return locale.ordinal(_this.$D);
+
+        case 'gggg':
+          return _this.weekYear();
+
+        case 'GGGG':
+          return _this.isoWeekYear();
+
+        case 'wo':
+          return locale.ordinal(_this.week(), 'W');
+        // W for week
+
+        case 'w':
+        case 'ww':
+          return utils.s(_this.week(), match === 'w' ? 1 : 2, '0');
+
+        case 'W':
+        case 'WW':
+          return utils.s(_this.isoWeek(), match === 'W' ? 1 : 2, '0');
+
+        case 'k':
+        case 'kk':
+          return utils.s(String(_this.$H === 0 ? 24 : _this.$H), match === 'k' ? 1 : 2, '0');
+
+        case 'X':
+          return Math.floor(_this.$d.getTime() / 1000);
+
+        case 'x':
+          return _this.$d.getTime();
+
+        case 'z':
+          return "[" + _this.offsetName() + "]";
+
+        case 'zzz':
+          return "[" + _this.offsetName('long') + "]";
+
+        default:
+          return match;
+      }
+    });
+    return oldFormat.bind(this)(result);
+  };
+});