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/@egjs/hammerjs/tests/manual/assets/style.css

@@ -0,0 +1,42 @@
+@import url(http://fonts.googleapis.com/css?family=Open+Sans);
+
+*, *:after, *:before {
+    box-sizing: border-box;
+    -moz-box-sizing: border-box;
+}
+
+html, body {
+    margin: 0;
+    padding: 0;
+    height: 100%;
+    min-height: 100%;
+    background: #eee;
+    font: 13px/1.5em 'Open Sans', Helvetica, Arial, sans-serif;
+}
+
+a {
+    color: #4986e7;
+}
+
+.bg1, .green { background: #42d692; }
+.bg2, .blue { background: #4986e7; }
+.bg3, .red { background: #d06b64; }
+.bg4, .purple { background: #cd74e6; }
+.bg5, .azure { background: #9fe1e7; }
+
+body {
+    margin: 20px;
+}
+
+pre {
+    background: #fff;
+    padding: 20px;
+    margin-bottom: 20px;
+}
+
+.container {
+    max-width: 900px;
+    margin: 0 auto;
+}
+
+.clear { clear: both; }