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/xmlbuilder/lib/XMLDOMImplementation.js

@@ -0,0 +1,55 @@
+// Generated by CoffeeScript 2.4.1
+(function() {
+  // Implements the DOMImplementation interface
+  var XMLDOMImplementation;
+
+  module.exports = XMLDOMImplementation = class XMLDOMImplementation {
+    // Tests if the DOM implementation implements a specific feature.
+
+    // `feature` package name of the feature to test. In Level 1, the
+    //           legal values are "HTML" and "XML" (case-insensitive).
+    // `version` version number of the package name to test. 
+    //           In Level 1, this is the string "1.0". If the version is 
+    //           not specified, supporting any version of the feature will 
+    //           cause the method to return true.
+    hasFeature(feature, version) {
+      return true;
+    }
+
+    // Creates a new document type declaration.
+
+    // `qualifiedName` qualified name of the document type to be created
+    // `publicId` public identifier of the external subset
+    // `systemId` system identifier of the external subset
+    createDocumentType(qualifiedName, publicId, systemId) {
+      throw new Error("This DOM method is not implemented.");
+    }
+
+    // Creates a new document.
+
+    // `namespaceURI` namespace URI of the document element to create
+    // `qualifiedName` the qualified name of the document to be created
+    // `doctype` the type of document to be created or null
+    createDocument(namespaceURI, qualifiedName, doctype) {
+      throw new Error("This DOM method is not implemented.");
+    }
+
+    // Creates a new HTML document.
+
+    // `title` document title
+    createHTMLDocument(title) {
+      throw new Error("This DOM method is not implemented.");
+    }
+
+    // Returns a specialized object which implements the specialized APIs 
+    // of the specified feature and version.
+
+    // `feature` name of the feature requested.
+    // `version` version number of the feature to test
+    getFeature(feature, version) {
+      throw new Error("This DOM method is not implemented.");
+    }
+
+  };
+
+}).call(this);