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/plist/README.md

@@ -0,0 +1,146 @@
+plist.js
+========
+### Apple's Property list parser/builder for Node.js and browsers
+
+[![ci](https://github.com/TooTallNate/plist.js/actions/workflows/ci.yml/badge.svg)](https://github.com/TooTallNate/plist.js/actions/workflows/ci.yml)
+
+Provides facilities for reading and writing Plist (property list) files.
+These are often used in programming OS X and iOS applications, as well
+as the iTunes configuration XML file.
+
+Plist files represent stored programming "object"s. They are very similar
+to JSON. A valid Plist file is representable as a native JavaScript Object
+and vice-versa.
+
+
+## Usage
+
+### Node.js
+
+Install using `npm`:
+
+``` bash
+$ npm install --save plist
+```
+
+Then `require()` the _plist_ module in your file:
+
+``` js
+var plist = require('plist');
+
+// now use the `parse()` and `build()` functions
+var val = plist.parse('<plist><string>Hello World!</string></plist>');
+console.log(val);  // "Hello World!"
+```
+
+
+### Browser
+
+Include the `dist/plist.js` in a `<script>` tag in your HTML file:
+
+``` html
+<script src="plist.js"></script>
+<script>
+  // now use the `parse()` and `build()` functions
+  var val = plist.parse('<plist><string>Hello World!</string></plist>');
+  console.log(val);  // "Hello World!"
+</script>
+```
+
+
+## API
+
+### Parsing
+
+Parsing a plist from filename:
+
+``` javascript
+var fs = require('fs');
+var plist = require('plist');
+
+var obj = plist.parse(fs.readFileSync('myPlist.plist', 'utf8'));
+console.log(JSON.stringify(obj));
+```
+
+Parsing a plist from string payload:
+
+``` javascript
+var plist = require('plist');
+
+var xml =
+  '<?xml version="1.0" encoding="UTF-8"?>' +
+  '<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">' +
+  '<plist version="1.0">' +
+    '<key>metadata</key>' +
+    '<dict>' +
+      '<key>bundle-identifier</key>' +
+      '<string>com.company.app</string>' +
+      '<key>bundle-version</key>' +
+      '<string>0.1.1</string>' +
+      '<key>kind</key>' +
+      '<string>software</string>' +
+      '<key>title</key>' +
+      '<string>AppName</string>' +
+    '</dict>' +
+  '</plist>';
+
+console.log(plist.parse(xml));
+
+// [
+//   "metadata",
+//   {
+//     "bundle-identifier": "com.company.app",
+//     "bundle-version": "0.1.1",
+//     "kind": "software",
+//     "title": "AppName"
+//   }
+// ]
+```
+
+### Building
+
+Given an existing JavaScript Object, you can turn it into an XML document
+that complies with the plist DTD:
+
+``` javascript
+var plist = require('plist');
+
+var json = [
+  "metadata",
+  {
+    "bundle-identifier": "com.company.app",
+    "bundle-version": "0.1.1",
+    "kind": "software",
+    "title": "AppName"
+  }
+];
+
+console.log(plist.build(json));
+
+// <?xml version="1.0" encoding="UTF-8"?>
+// <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+// <plist version="1.0">
+//   <key>metadata</key>
+//   <dict>
+//     <key>bundle-identifier</key>
+//     <string>com.company.app</string>
+//     <key>bundle-version</key>
+//     <string>0.1.1</string>
+//     <key>kind</key>
+//     <string>software</string>
+//     <key>title</key>
+//     <string>AppName</string>
+//   </dict>
+// </plist>
+```
+
+## Cross Platform Testing Credits
+
+Much thanks to Sauce Labs for providing free resources that enable cross-browser testing on this project!
+
+[![Testing Powered By SauceLabs](https://opensource.saucelabs.com/images/opensauce/powered-by-saucelabs-badge-red.png?sanitize=true "Testing Powered By SauceLabs")](https://saucelabs.com)
+
+
+## License
+
+[(The MIT License)](LICENSE)