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/Components/ActivityIndicator/ActivityIndicator.d.ts

@@ -0,0 +1,86 @@
+/**
+ * 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.
+ *
+ * @format
+ */
+
+import type * as React from 'react';
+import {Constructor} from '../../../types/private/Utilities';
+import {NativeMethods} from '../../../types/public/ReactNativeTypes';
+import {ColorValue, StyleProp} from '../../StyleSheet/StyleSheet';
+import {ViewStyle} from '../../StyleSheet/StyleSheetTypes';
+import {LayoutChangeEvent} from '../../Types/CoreEventTypes';
+import {ViewProps} from '../View/ViewPropTypes';
+
+/**
+ * @see https://reactnative.dev/docs/activityindicator#props
+ */
+export interface ActivityIndicatorProps extends ViewProps {
+  /**
+   * Whether to show the indicator (true, the default) or hide it (false).
+   */
+  animating?: boolean | undefined;
+
+  /**
+   * The foreground color of the spinner (default is gray).
+   */
+  color?: ColorValue | undefined;
+
+  /**
+   * Whether the indicator should hide when not animating (true by default).
+   */
+  hidesWhenStopped?: boolean | undefined;
+
+  /**
+   * Size of the indicator.
+   * Small has a height of 20, large has a height of 36.
+   *
+   * enum('small', 'large')
+   */
+  size?: number | 'small' | 'large' | undefined;
+
+  style?: StyleProp<ViewStyle> | undefined;
+}
+
+declare class ActivityIndicatorComponent extends React.Component<ActivityIndicatorProps> {}
+declare const ActivityIndicatorBase: Constructor<NativeMethods> &
+  typeof ActivityIndicatorComponent;
+export class ActivityIndicator extends ActivityIndicatorBase {}
+
+/**
+ * @see https://reactnative.dev/docs/activityindicatorios#props
+ */
+export interface ActivityIndicatorIOSProps extends ViewProps {
+  /**
+   * Whether to show the indicator (true, the default) or hide it (false).
+   */
+  animating?: boolean | undefined;
+
+  /**
+   * The foreground color of the spinner (default is gray).
+   */
+  color?: ColorValue | undefined;
+
+  /**
+   * Whether the indicator should hide when not animating (true by default).
+   */
+  hidesWhenStopped?: boolean | undefined;
+
+  /**
+   * Invoked on mount and layout changes with
+   */
+  onLayout?: ((event: LayoutChangeEvent) => void) | undefined;
+
+  /**
+   * Size of the indicator.
+   * Small has a height of 20, large has a height of 36.
+   *
+   * enum('small', 'large')
+   */
+  size?: 'small' | 'large' | undefined;
+
+  style?: StyleProp<ViewStyle> | undefined;
+}

smart-app-city/frontend/node_modules/react-native/Libraries/Components/ActivityIndicator/ActivityIndicator.js

@@ -0,0 +1,177 @@
+/**
+ * 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.
+ *
+ * @format
+ * @flow
+ */
+
+'use strict';
+import type {HostComponent} from '../../Renderer/shims/ReactNativeTypes';
+import type {ViewProps} from '../View/ViewPropTypes';
+
+import StyleSheet, {type ColorValue} from '../../StyleSheet/StyleSheet';
+import Platform from '../../Utilities/Platform';
+import View from '../View/View';
+import * as React from 'react';
+
+const PlatformActivityIndicator =
+  Platform.OS === 'android'
+    ? require('../ProgressBarAndroid/ProgressBarAndroid')
+    : require('./ActivityIndicatorViewNativeComponent').default;
+
+const GRAY = '#999999';
+
+type IndicatorSize = number | 'small' | 'large';
+
+type IOSProps = $ReadOnly<{|
+  /**
+    Whether the indicator should hide when not animating.
+
+    @platform ios
+  */
+  hidesWhenStopped?: ?boolean,
+|}>;
+type Props = $ReadOnly<{|
+  ...ViewProps,
+  ...IOSProps,
+
+  /**
+   	Whether to show the indicator (`true`) or hide it (`false`).
+   */
+  animating?: ?boolean,
+
+  /**
+    The foreground color of the spinner.
+
+    @default {@platform android} `null` (system accent default color)
+    @default {@platform ios} '#999999'
+  */
+  color?: ?ColorValue,
+
+  /**
+    Size of the indicator.
+
+    @type enum(`'small'`, `'large'`)
+    @type {@platform android} number
+  */
+  size?: ?IndicatorSize,
+|}>;
+
+const ActivityIndicator = (
+  {
+    animating = true,
+    color = Platform.OS === 'ios' ? GRAY : null,
+    hidesWhenStopped = true,
+    onLayout,
+    size = 'small',
+    style,
+    ...restProps
+  }: Props,
+  forwardedRef?: any,
+) => {
+  let sizeStyle;
+  let sizeProp;
+
+  switch (size) {
+    case 'small':
+      sizeStyle = styles.sizeSmall;
+      sizeProp = 'small';
+      break;
+    case 'large':
+      sizeStyle = styles.sizeLarge;
+      sizeProp = 'large';
+      break;
+    default:
+      sizeStyle = {height: size, width: size};
+      break;
+  }
+
+  const nativeProps = {
+    animating,
+    color,
+    hidesWhenStopped,
+    ...restProps,
+    ref: forwardedRef,
+    style: sizeStyle,
+    size: sizeProp,
+  };
+
+  const androidProps = {
+    styleAttr: 'Normal',
+    indeterminate: true,
+  };
+
+  return (
+    <View
+      onLayout={onLayout}
+      style={StyleSheet.compose(styles.container, style)}>
+      {Platform.OS === 'android' ? (
+        // $FlowFixMe[prop-missing] Flow doesn't know when this is the android component
+        <PlatformActivityIndicator {...nativeProps} {...androidProps} />
+      ) : (
+        /* $FlowFixMe[prop-missing] (>=0.106.0 site=react_native_android_fb) This comment
+         * suppresses an error found when Flow v0.106 was deployed. To see the
+         * error, delete this comment and run Flow. */
+        <PlatformActivityIndicator {...nativeProps} />
+      )}
+    </View>
+  );
+};
+
+/**
+  Displays a circular loading indicator.
+
+  ```SnackPlayer name=ActivityIndicator%20Example
+  import React from 'react';
+  import {ActivityIndicator, StyleSheet, View} from 'react-native';
+
+  const App = () => (
+    <View style={[styles.container, styles.horizontal]}>
+      <ActivityIndicator />
+      <ActivityIndicator size="large" />
+      <ActivityIndicator size="small" color="#0000ff" />
+      <ActivityIndicator size="large" color="#00ff00" />
+    </View>
+  );
+
+  const styles = StyleSheet.create({
+    container: {
+      flex: 1,
+      justifyContent: 'center',
+    },
+    horizontal: {
+      flexDirection: 'row',
+      justifyContent: 'space-around',
+      padding: 10,
+    },
+  });
+
+  export default App;
+```
+*/
+
+const ActivityIndicatorWithRef: React.AbstractComponent<
+  Props,
+  HostComponent<mixed>,
+> = React.forwardRef(ActivityIndicator);
+ActivityIndicatorWithRef.displayName = 'ActivityIndicator';
+
+const styles = StyleSheet.create({
+  container: {
+    alignItems: 'center',
+    justifyContent: 'center',
+  },
+  sizeSmall: {
+    width: 20,
+    height: 20,
+  },
+  sizeLarge: {
+    width: 36,
+    height: 36,
+  },
+});
+
+export default ActivityIndicatorWithRef;

smart-app-city/frontend/node_modules/react-native/Libraries/Components/ActivityIndicator/ActivityIndicatorViewNativeComponent.js

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+/**
+ * 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.
+ *
+ * @format
+ * @flow strict-local
+ */
+
+export * from '../../../src/private/specs/components/ActivityIndicatorViewNativeComponent';
+import ActivityIndicatorViewNativeComponent from '../../../src/private/specs/components/ActivityIndicatorViewNativeComponent';
+export default ActivityIndicatorViewNativeComponent;