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/join-component/.npmignore

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+components
+build
+node_modules

smart-app-city/frontend/node_modules/join-component/History.md

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+
+1.1.0 / 2012-12-29 
+==================
+
+  * add Oxford comma support

smart-app-city/frontend/node_modules/join-component/Makefile

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+
+build: components index.js
+	@component build --dev
+
+components: component.json
+	@component install --dev
+
+clean:
+	rm -fr build components template.js
+
+test:
+	@./node_modules/.bin/mocha --require should
+
+.PHONY: clean test

smart-app-city/frontend/node_modules/join-component/Readme.md

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+
+# join
+
+  Join a list in a nice human friendly way.
+
+## Installation
+
+    $ component install component/join
+
+## API
+
+   - [join(arr)](#joinarr)
+   - [join(arr, str)](#joinarr-str)
+   - [join(arr, str) with Oxford comma](#joinarr-str-with-oxford-comma)
+<a name=""></a>
+
+<a name="joinarr"></a>
+# join(arr)
+should default to "and".
+
+```js
+join(['foo', 'bar']).should.equal('foo and bar');
+```
+
+<a name="joinarr-str"></a>
+# join(arr, str)
+should join.
+
+```js
+join([], 'and').should.equal('');
+join(['foo'], 'and').should.equal('foo');
+join(['foo', 'bar'], 'and').should.equal('foo and bar');
+join(['foo', 'bar', 'baz'], 'or').should.equal('foo, bar or baz');
+```
+
+<a name="joinarr-str-with-oxford-comma"></a>
+# join(arr, str) with Oxford comma
+should remove comma with less than 3 items.
+
+```js
+join([], ', or').should.equal('');
+join(['foo'], ', or').should.equal('foo');
+join(['foo', 'bar'], ', or').should.equal('foo or bar');
+```
+
+should join with 3 or more items.
+
+```js
+join(['foo', 'bar', 'baz'], ', and').should.equal('foo, bar, and baz');
+```
+
+## License
+
+  MIT

smart-app-city/frontend/node_modules/join-component/component.json

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+{
+  "name": "join",
+  "repo": "component/join",
+  "description": "Join a list",
+  "version": "1.1.0",
+  "keywords": ["join", "list"],
+  "dependencies": {},
+  "development": {},
+  "license": "MIT",
+  "scripts": [
+    "index.js"
+  ]
+}

smart-app-city/frontend/node_modules/join-component/index.js

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+
+/**
+ * Join `arr` with the trailing `str` defaulting to "and",
+ * and `sep` string defaulting to ", ".
+ *
+ * @param {Array} arr
+ * @param {String} str
+ * @param {String} sep
+ * @return {String}
+ * @api public
+ */
+
+module.exports = function(arr, str, sep){
+  str = str || 'and';
+  sep = sep || ', ';
+
+  if (arr.length < 2) return arr[0] || '';
+
+  var oxford = str.slice(0, 2) === sep;
+
+  if (!oxford) {
+    str = ' ' + str;
+  } else if (arr.length == 2) {
+    str = str.slice(1);
+  }
+
+  return arr.slice(0, -1).join(sep) + str + ' ' + arr[arr.length - 1];
+};

smart-app-city/frontend/node_modules/join-component/package.json

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+{
+  "name": "join-component",
+  "repo": "component/join",
+  "description": "Join a list",
+  "version": "1.1.0",
+  "keywords": [],
+  "dependencies": {},
+  "devDependencies": {
+    "mocha": "*",
+    "should": "*"
+  },
+  "license": "MIT",
+  "component": {
+    "scripts": {
+      "join/index.js": "index.js"
+    }
+  }
+}

smart-app-city/frontend/node_modules/join-component/test/index.js

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+
+var join = require('..');
+
+describe('join(arr)', function(){
+  it('should default to "and"', function(){
+     join(['foo', 'bar']).should.equal('foo and bar');
+  })
+})
+
+describe('join(arr, str)', function(){
+  it('should join', function(){
+     join([], 'and').should.equal('');
+     join(['foo'], 'and').should.equal('foo');
+     join(['foo', 'bar'], 'and').should.equal('foo and bar');
+     join(['foo', 'bar', 'baz'], 'or').should.equal('foo, bar or baz');
+  })
+})
+
+describe('join(arr, str) with Oxford comma', function() {
+  it('should remove comma with less than 3 items', function() {
+    join([], ', or').should.equal('');
+    join(['foo'], ', or').should.equal('foo');
+    join(['foo', 'bar'], ', or').should.equal('foo or bar');
+  })
+
+  it('should join with 3 or more items', function() {
+    join(['foo', 'bar', 'baz'], ', and').should.equal('foo, bar, and baz');
+  })
+})