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/tests/fnv1aTests.cpp

@@ -0,0 +1,24 @@
+/*
+ * 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.
+ */
+
+#include <gtest/gtest.h>
+#include <react/utils/fnv1a.h>
+
+namespace facebook::react {
+
+TEST(fnv1aTests, testBasicHashing) {
+  EXPECT_EQ(fnv1a("react"), fnv1a("react"));
+
+  EXPECT_NE(fnv1a("react"), fnv1a("tceat"));
+
+  auto string1 = "case 1";
+  auto string2 = "different string";
+  EXPECT_EQ(fnv1a(string1), fnv1a(string1));
+  EXPECT_NE(fnv1a(string1), fnv1a(string2));
+}
+
+} // namespace facebook::react

smart-app-city/frontend/node_modules/react-native/ReactCommon/react/utils/tests/hash_combineTests.cpp

@@ -0,0 +1,82 @@
+/*
+ * 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.
+ */
+
+#include <gtest/gtest.h>
+#include <react/utils/hash_combine.h>
+
+struct Person {
+  std::string firstName;
+  std::string lastName;
+};
+
+namespace std {
+template <>
+struct hash<Person> {
+  size_t operator()(const Person& person) const {
+    return facebook::react::hash_combine(person.firstName, person.lastName);
+  }
+};
+} // namespace std
+
+namespace facebook::react {
+
+TEST(hash_combineTests, testIntegerTemplating) {
+  std::size_t seed = 0;
+  hash_combine(seed, 1);
+
+  auto hashedValue = hash_combine(1);
+  EXPECT_EQ(hashedValue, seed);
+
+  EXPECT_NE(hash_combine(1), hash_combine(2));
+}
+
+TEST(hash_combineTests, testIntegerCombinationsHashing) {
+  std::size_t seed = 0;
+  hash_combine(seed, 1, 2);
+
+  auto hashedValue = hash_combine(1, 2);
+  EXPECT_EQ(hashedValue, seed);
+
+  EXPECT_NE(hash_combine(1, 2), hash_combine(2, 1));
+}
+
+TEST(hash_combineTests, testContiniousIntegerHashing) {
+  std::size_t seed = 0;
+
+  for (int i = 1; i <= 200; ++i) {
+    auto previousSeed = seed;
+    hash_combine(seed, i);
+    EXPECT_NE(seed, previousSeed);
+  }
+}
+
+TEST(hash_combineTests, testStrings) {
+  std::size_t seed = 0;
+  hash_combine<std::string>(seed, "react");
+
+  auto hashedValue = hash_combine<std::string>("react");
+  EXPECT_EQ(hashedValue, seed);
+
+  EXPECT_NE(
+      hash_combine<std::string>("react"),
+      hash_combine<std::string>("react native"));
+}
+
+TEST(hash_combineTests, testCustomTypes) {
+  auto person1 = Person{"John", "Doe"};
+  auto person2 = Person{"Jane", "Doe"};
+
+  std::size_t seed = 0;
+  hash_combine(seed, person1);
+
+  auto hashedValue = hash_combine(person1);
+  EXPECT_EQ(hashedValue, seed);
+
+  EXPECT_NE(hash_combine(person1), hash_combine(person2));
+}
+
+} // namespace facebook::react