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/nice-try/CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+## [1.0.5] - 2018-08-25
+
+### Changed
+
+- Removed `prepublish` script from `package.json`
+
+## [1.0.4] - 2017-08-08
+
+### New
+
+- Added a changelog
+
+### Changed
+
+- Ignore `yarn.lock` and `package-lock.json` files

smart-app-city/frontend/node_modules/nice-try/LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2018 Tobias Reich
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

smart-app-city/frontend/node_modules/nice-try/README.md

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+# nice-try
+
+[![Travis Build Status](https://travis-ci.org/electerious/nice-try.svg?branch=master)](https://travis-ci.org/electerious/nice-try) [![AppVeyor Status](https://ci.appveyor.com/api/projects/status/8tqb09wrwci3xf8l?svg=true)](https://ci.appveyor.com/project/electerious/nice-try) [![Coverage Status](https://coveralls.io/repos/github/electerious/nice-try/badge.svg?branch=master)](https://coveralls.io/github/electerious/nice-try?branch=master) [![Dependencies](https://david-dm.org/electerious/nice-try.svg)](https://david-dm.org/electerious/nice-try#info=dependencies) [![Greenkeeper badge](https://badges.greenkeeper.io/electerious/nice-try.svg)](https://greenkeeper.io/)
+
+A function that tries to execute a function and discards any error that occurs.
+
+## Install
+
+```
+npm install nice-try
+```
+
+## Usage
+
+```js
+const niceTry = require('nice-try')
+
+niceTry(() => JSON.parse('true')) // true
+niceTry(() => JSON.parse('truee')) // undefined
+niceTry() // undefined
+niceTry(true) // undefined
+```
+
+## API
+
+### Parameters
+
+- `fn` `{Function}` Function that might or might not throw an error.
+
+### Returns
+
+- `{?*}` Return-value of the function when no error occurred.

smart-app-city/frontend/node_modules/nice-try/package.json

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+{
+  "name": "nice-try",
+  "version": "1.0.5",
+  "authors": [
+    "Tobias Reich <tobias@electerious.com>"
+  ],
+  "description": "Tries to execute a function and discards any error that occurs",
+  "main": "src/index.js",
+  "keywords": [
+    "try",
+    "catch",
+    "error"
+  ],
+  "license": "MIT",
+  "homepage": "https://github.com/electerious/nice-try",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/electerious/nice-try.git"
+  },
+  "files": [
+    "src"
+  ],
+  "scripts": {
+    "coveralls": "nyc report --reporter=text-lcov | coveralls",
+    "test": "nyc node_modules/mocha/bin/_mocha"
+  },
+  "devDependencies": {
+    "chai": "^4.1.2",
+    "coveralls": "^3.0.0",
+    "nyc": "^12.0.1",
+    "mocha": "^5.1.1"
+  }
+}

smart-app-city/frontend/node_modules/nice-try/src/index.js

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+'use strict'
+
+/**
+ * Tries to execute a function and discards any error that occurs.
+ * @param {Function} fn - Function that might or might not throw an error.
+ * @returns {?*} Return-value of the function when no error occurred.
+ */
+module.exports = function(fn) {
+
+	try { return fn() } catch (e) {}
+
+}