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/ReactCommon/react/utils/Telemetry.h

@@ -0,0 +1,113 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+#include <chrono>
+#include <type_traits>
+
+namespace facebook::react {
+
+/*
+ * Represents a monotonic clock suitable for measuring intervals.
+ */
+using TelemetryClock = std::chrono::steady_clock;
+
+/*
+ * Represents a point in time satisfied the requirements of TelemetryClock.
+ */
+using TelemetryTimePoint = TelemetryClock::time_point;
+
+/*
+ * Represents a time interval satisfied the requirements of TelemetryClock.
+ */
+using TelemetryDuration = std::chrono::nanoseconds;
+
+/*
+ * Represents a time point which never happens.
+ */
+static const TelemetryTimePoint kTelemetryUndefinedTimePoint =
+    TelemetryTimePoint::max();
+
+/*
+ * Returns a time point representing the current point in time.
+ */
+static inline TelemetryTimePoint telemetryTimePointNow() {
+  return TelemetryClock::now();
+}
+
+/*
+ * Returns a number of milliseconds that passed from some epoch starting time
+ * point to a given time point. The epoch starting time point is not specified
+ * but stays the same for an application run.
+ */
+static inline int64_t telemetryTimePointToMilliseconds(
+    TelemetryTimePoint timePoint) {
+  return std::chrono::duration_cast<std::chrono::milliseconds>(
+             timePoint - TelemetryTimePoint{})
+      .count();
+}
+
+/*
+ * Returns a number of seconds that passed from "Steady Clock" epoch starting
+ * time point to a given time point.
+ */
+static inline double telemetryTimePointToSteadyClockSeconds(
+    TelemetryTimePoint timePoint) {
+  static_assert(
+      std::is_same<decltype(timePoint), std::chrono::steady_clock::time_point>::
+          value,
+      "`TelemetryClock` must be `std::chrono::steady_clock` to make the "
+      "following implementation work correctly.");
+
+  auto nanoseconds = std::chrono::duration_cast<std::chrono::nanoseconds>(
+                         timePoint.time_since_epoch())
+                         .count();
+  return (double)nanoseconds / 1.0e9;
+}
+
+/*
+ * Converts a time point on one clock to a time point on a different clock.
+ */
+template <
+    typename DestinationTimePointT,
+    typename SourceTimePointT,
+    typename DestnationClockT = typename DestinationTimePointT::clock,
+    typename SourceClockT = typename SourceTimePointT::clock>
+DestinationTimePointT clockCast(SourceTimePointT timePoint) {
+  auto sourseClockNow = SourceClockT::now();
+  auto destinationClockNow = DestnationClockT::now();
+  return std::chrono::time_point_cast<typename DestnationClockT::duration>(
+      timePoint - sourseClockNow + destinationClockNow);
+}
+
+/*
+ * Returns a number of seconds that passed from the UNIX Epoch starting time
+ * point to a given time point.
+ * Also known as POSIX time or UNIX Timestamp.
+ */
+static inline double telemetryTimePointToSecondsSinceEpoch(
+    TelemetryTimePoint timePoint) {
+  auto systemClockTimePoint =
+      clockCast<std::chrono::system_clock::time_point, TelemetryTimePoint>(
+          timePoint);
+  return (double)std::chrono::duration_cast<std::chrono::microseconds>(
+             systemClockTimePoint.time_since_epoch())
+             .count() /
+      1000000.0;
+}
+
+/*
+ * Returns a number of milliseconds that represents the given duration object.
+ */
+static inline int64_t telemetryDurationToMilliseconds(
+    TelemetryDuration duration) {
+  return std::chrono::duration_cast<std::chrono::milliseconds>(duration)
+      .count();
+}
+
+} // namespace facebook::react