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/React-Core.podspec

@@ -0,0 +1,144 @@
+# 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+  # This is an unpublished version, use the latest commit hash of the react-native repo, which we’re presumably in.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
+
+folly_config = get_folly_config()
+folly_compiler_flags = folly_config[:compiler_flags]
+folly_version = folly_config[:version]
+socket_rocket_version = '0.7.0'
+boost_compiler_flags = '-Wno-documentation'
+
+use_hermes = ENV['USE_HERMES'] == nil || ENV['USE_HERMES'] == '1'
+use_hermes_flag = use_hermes ? "-DUSE_HERMES=1" : ""
+
+header_subspecs = {
+  'CoreModulesHeaders'          => 'React/CoreModules/**/*.h',
+  'RCTActionSheetHeaders'       => 'Libraries/ActionSheetIOS/*.h',
+  'RCTAnimationHeaders'         => 'Libraries/NativeAnimation/{Drivers/*,Nodes/*,*}.{h}',
+  'RCTBlobHeaders'              => 'Libraries/Blob/{RCTBlobManager,RCTFileReaderModule}.h',
+  'RCTImageHeaders'             => 'Libraries/Image/*.h',
+  'RCTLinkingHeaders'           => 'Libraries/LinkingIOS/*.h',
+  'RCTNetworkHeaders'           => 'Libraries/Network/*.h',
+  'RCTPushNotificationHeaders'  => 'Libraries/PushNotificationIOS/*.h',
+  'RCTSettingsHeaders'          => 'Libraries/Settings/*.h',
+  'RCTTextHeaders'              => 'Libraries/Text/**/*.h',
+  'RCTVibrationHeaders'         => 'Libraries/Vibration/*.h',
+}
+
+frameworks_search_paths = []
+frameworks_search_paths << "\"$(PODS_CONFIGURATION_BUILD_DIR)/React-hermes\"" if use_hermes
+
+header_search_paths = [
+  "$(PODS_TARGET_SRCROOT)/ReactCommon",
+  "$(PODS_ROOT)/boost",
+  "$(PODS_ROOT)/DoubleConversion",
+  "$(PODS_ROOT)/fmt/include",
+  "$(PODS_ROOT)/RCT-Folly",
+  "${PODS_ROOT}/Headers/Public/FlipperKit",
+  "$(PODS_ROOT)/Headers/Public/ReactCommon",
+].concat(use_hermes ? [
+  "$(PODS_ROOT)/Headers/Public/React-hermes",
+  "$(PODS_ROOT)/Headers/Public/hermes-engine"
+] : [])
+
+Pod::Spec.new do |s|
+  s.name                   = "React-Core"
+  s.version                = version
+  s.summary                = "The core of 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.resource_bundle        = { "RCTI18nStrings" => ["React/I18n/strings/*.lproj"]}
+  s.compiler_flags         = folly_compiler_flags + ' ' + boost_compiler_flags + ' ' + use_hermes_flag
+  s.header_dir             = "React"
+  s.framework              = "JavaScriptCore"
+  s.pod_target_xcconfig    = {
+                               "HEADER_SEARCH_PATHS" => header_search_paths,
+                               "DEFINES_MODULE" => "YES",
+                               "GCC_PREPROCESSOR_DEFINITIONS" => "RCT_METRO_PORT=${RCT_METRO_PORT}",
+                               "CLANG_CXX_LANGUAGE_STANDARD" => "c++20",
+                               "FRAMEWORK_SEARCH_PATHS" => frameworks_search_paths.join(" ")
+                             }
+  s.user_target_xcconfig   = { "HEADER_SEARCH_PATHS" => "\"$(PODS_ROOT)/Headers/Private/React-Core\""}
+  s.default_subspec        = "Default"
+
+  s.subspec "Default" do |ss|
+    ss.source_files           = "React/**/*.{c,h,m,mm,S,cpp}"
+    exclude_files = [
+      "React/CoreModules/**/*",
+      "React/DevSupport/**/*",
+      "React/Fabric/**/*",
+      "React/FBReactNativeSpec/**/*",
+      "React/Tests/**/*",
+      "React/Inspector/**/*",
+    ]
+    # If we are using Hermes (the default is use hermes, so USE_HERMES can be nil), we don't have jsc installed
+    # So we have to exclude the JSCExecutorFactory
+    if use_hermes
+      exclude_files = exclude_files.append("React/CxxBridge/JSCExecutorFactory.{h,mm}")
+    end
+    ss.exclude_files = exclude_files
+    ss.private_header_files   = "React/Cxx*/*.h"
+  end
+
+  s.subspec "DevSupport" do |ss|
+    ss.source_files = "React/DevSupport/*.{h,mm,m}",
+                      "React/Inspector/*.{h,mm,m}"
+
+    ss.dependency "React-Core/Default", version
+    ss.dependency "React-Core/RCTWebSocket", version
+    ss.private_header_files = "React/Inspector/RCTCxx*.h"
+  end
+
+  s.subspec "RCTWebSocket" do |ss|
+    ss.source_files = "Libraries/WebSocket/*.{h,m}"
+    ss.dependency "React-Core/Default", version
+  end
+
+  # Add a subspec containing just the headers for each
+  # pod that should live under <React/*.h>
+  header_subspecs.each do |name, headers|
+    s.subspec name do |ss|
+      ss.source_files = headers
+      ss.dependency "React-Core/Default"
+    end
+  end
+
+  s.dependency "RCT-Folly", folly_version
+  s.dependency "React-cxxreact"
+  s.dependency "React-perflogger"
+  s.dependency "React-jsi"
+  s.dependency "React-jsiexecutor"
+  s.dependency "React-utils"
+  s.dependency "React-featureflags"
+  s.dependency "SocketRocket", socket_rocket_version
+  s.dependency "React-runtimescheduler"
+  s.dependency "Yoga"
+  s.dependency "glog"
+
+  add_dependency(s, "React-jsinspector", :framework_name => 'jsinspector_modern')
+  add_dependency(s, "RCTDeprecation")
+
+  if use_hermes
+    s.dependency 'React-hermes'
+    s.dependency 'hermes-engine'
+  else
+    s.dependency 'React-jsc'
+  end
+end