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/react-native/Libraries/Animated/nodes/AnimatedModulo.js

@@ -0,0 +1,63 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ * @format
+ */
+
+'use strict';
+
+import type {PlatformConfig} from '../AnimatedPlatformConfig';
+import type {InterpolationConfigType} from './AnimatedInterpolation';
+import type AnimatedNode from './AnimatedNode';
+
+import AnimatedInterpolation from './AnimatedInterpolation';
+import AnimatedWithChildren from './AnimatedWithChildren';
+
+export default class AnimatedModulo extends AnimatedWithChildren {
+  _a: AnimatedNode;
+  _modulus: number;
+
+  constructor(a: AnimatedNode, modulus: number) {
+    super();
+    this._a = a;
+    this._modulus = modulus;
+  }
+
+  __makeNative(platformConfig: ?PlatformConfig) {
+    this._a.__makeNative(platformConfig);
+    super.__makeNative(platformConfig);
+  }
+
+  __getValue(): number {
+    return (
+      ((this._a.__getValue() % this._modulus) + this._modulus) % this._modulus
+    );
+  }
+
+  interpolate<OutputT: number | string>(
+    config: InterpolationConfigType<OutputT>,
+  ): AnimatedInterpolation<OutputT> {
+    return new AnimatedInterpolation(this, config);
+  }
+
+  __attach(): void {
+    this._a.__addChild(this);
+  }
+
+  __detach(): void {
+    this._a.__removeChild(this);
+    super.__detach();
+  }
+
+  __getNativeConfig(): any {
+    return {
+      type: 'modulus',
+      input: this._a.__getNativeTag(),
+      modulus: this._modulus,
+    };
+  }
+}