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/jsc/.clang-tidy

@@ -0,0 +1,6 @@
+---
+Checks: '>
+clang-diagnostic-*,
+'
+InheritParentConfig: true
+...

smart-app-city/frontend/node_modules/react-native/ReactCommon/jsc/CMakeLists.txt

@@ -0,0 +1,35 @@
+# 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.
+
+##################
+### jscruntime ###
+##################
+
+cmake_minimum_required(VERSION 3.13)
+set(CMAKE_VERBOSE_MAKEFILE on)
+
+add_compile_options(
+        -fexceptions
+        -frtti
+        -O3
+        -Wno-unused-lambda-capture
+        -DLOG_TAG=\"ReactNative\")
+
+add_library(jscruntime
+        STATIC
+        JSCRuntime.h
+        JSCRuntime.cpp)
+
+target_include_directories(jscruntime PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
+
+target_link_libraries(jscruntime
+        folly_runtime
+        jsc
+        jsi
+        glog)
+
+if(NOT ${CMAKE_BUILD_TYPE} MATCHES Debug)
+        target_compile_options(jscruntime PRIVATE -DNDEBUG)
+endif()

smart-app-city/frontend/node_modules/react-native/ReactCommon/jsc/JSCRuntime.h

@@ -0,0 +1,19 @@
+/*
+ * 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 <jsi/jsi.h>
+#include <memory.h>
+
+namespace facebook {
+namespace jsc {
+
+std::unique_ptr<jsi::Runtime> makeJSCRuntime();
+
+} // namespace jsc
+} // namespace facebook

smart-app-city/frontend/node_modules/react-native/ReactCommon/jsc/React-jsc.podspec

@@ -0,0 +1,37 @@
+# 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.
+
+require "json"
+
+package = JSON.parse(File.read(File.join(__dir__, "..", "..", "package.json")))
+version = package['version']
+
+source = { :git => 'https://github.com/facebook/react-native.git' }
+if version == '1000.0.0'
+  # This is an unpublished version, use the latest commit hash of the react-native repo, which we’re presumably in.
+  source[:commit] = `git rev-parse HEAD`.strip if system("git rev-parse --git-dir > /dev/null 2>&1")
+else
+  source[:tag] = "v#{version}"
+end
+
+Pod::Spec.new do |s|
+  s.name                   = "React-jsc"
+  s.version                = version
+  s.summary                = "JavaScriptCore engine for React Native"
+  s.homepage               = "https://reactnative.dev/"
+  s.license                = package["license"]
+  s.author                 = "Meta Platforms, Inc. and its affiliates"
+  s.platforms              = min_supported_versions
+  s.source                 = source
+  s.source_files           = "JSCRuntime.{cpp,h}"
+  s.exclude_files          = "**/test/*"
+  s.framework              = "JavaScriptCore"
+
+  s.dependency "React-jsi", version
+
+  s.subspec "Fabric" do |ss|
+    ss.pod_target_xcconfig  = { "OTHER_CFLAGS" => "$(inherited)" }
+  end
+end