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/StyleSheet/private/_StyleSheetTypesOverrides.js

@@ -0,0 +1,15 @@
+/**
+ * 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 strict
+ * @format
+ */
+
+export type ____DangerouslyImpreciseStyle_InternalOverrides = $ReadOnly<{}>;
+export type ____ImageStyle_InternalOverrides = $ReadOnly<{}>;
+export type ____ShadowStyle_InternalOverrides = $ReadOnly<{}>;
+export type ____TextStyle_InternalOverrides = $ReadOnly<{}>;
+export type ____ViewStyle_InternalOverrides = $ReadOnly<{}>;

smart-app-city/frontend/node_modules/react-native/Libraries/StyleSheet/private/_TransformStyle.js

@@ -0,0 +1,69 @@
+/**
+ * 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 strict-local
+ * @format
+ */
+
+import type AnimatedNode from '../../Animated/nodes/AnimatedNode';
+
+export type ____TransformStyle_Internal = $ReadOnly<{|
+  /**
+   * `transform` accepts an array of transformation objects. Each object specifies
+   * the property that will be transformed as the key, and the value to use in the
+   * transformation. Objects should not be combined. Use a single key/value pair
+   * per object.
+   *
+   * The rotate transformations require a string so that the transform may be
+   * expressed in degrees (deg) or radians (rad). For example:
+   *
+   * `transform([{ rotateX: '45deg' }, { rotateZ: '0.785398rad' }])`
+   *
+   * The skew transformations require a string so that the transform may be
+   * expressed in degrees (deg). For example:
+   *
+   * `transform([{ skewX: '45deg' }])`
+   */
+  transform?:
+    | $ReadOnlyArray<
+        | {|+perspective: number | AnimatedNode|}
+        | {|+rotate: string | AnimatedNode|}
+        | {|+rotateX: string | AnimatedNode|}
+        | {|+rotateY: string | AnimatedNode|}
+        | {|+rotateZ: string | AnimatedNode|}
+        | {|+scale: number | AnimatedNode|}
+        | {|+scaleX: number | AnimatedNode|}
+        | {|+scaleY: number | AnimatedNode|}
+        | {|+translateX: number | AnimatedNode|}
+        | {|+translateY: number | AnimatedNode|}
+        | {|
+            +translate:
+              | [number | AnimatedNode, number | AnimatedNode]
+              | AnimatedNode,
+          |}
+        | {|+skewX: string | AnimatedNode|}
+        | {|+skewY: string | AnimatedNode|}
+        // TODO: what is the actual type it expects?
+        | {|
+            +matrix: $ReadOnlyArray<number | AnimatedNode> | AnimatedNode,
+          |},
+      >
+    | string,
+  /**
+   * `transformOrigin` accepts an array with 3 elements - each element either being
+   * a number, or a string of a number ending with `%`. The last element cannot be
+   * a percentage, so must be a number.
+   *
+   * E.g. transformOrigin: ['30%', '80%', 15]
+   *
+   * Alternatively accepts a string of the CSS syntax. You must use `%` or `px`.
+   *
+   * E.g. transformOrigin: '30% 80% 15px'
+   */
+  transformOrigin?:
+    | [string | number, string | number, string | number]
+    | string,
+|}>;