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/CxxBridge/JSCExecutorFactory.h

@@ -0,0 +1,27 @@
+/*
+ * 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 <jsireact/JSIExecutor.h>
+
+namespace facebook::react {
+
+class JSCExecutorFactory : public JSExecutorFactory {
+ public:
+  explicit JSCExecutorFactory(JSIExecutor::RuntimeInstaller runtimeInstaller)
+      : runtimeInstaller_(std::move(runtimeInstaller)) {}
+
+  std::unique_ptr<JSExecutor> createJSExecutor(
+      std::shared_ptr<ExecutorDelegate> delegate,
+      std::shared_ptr<MessageQueueThread> jsQueue) override;
+
+ private:
+  JSIExecutor::RuntimeInstaller runtimeInstaller_;
+};
+
+} // namespace facebook::react

smart-app-city/frontend/node_modules/react-native/React/CxxBridge/JSCExecutorFactory.mm

@@ -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 "JSCExecutorFactory.h"
+
+#import <jsc/JSCRuntime.h>
+
+#import <memory>
+
+namespace facebook::react {
+
+std::unique_ptr<JSExecutor> JSCExecutorFactory::createJSExecutor(
+    std::shared_ptr<ExecutorDelegate> delegate,
+    std::shared_ptr<MessageQueueThread> __unused jsQueue)
+{
+  return std::make_unique<JSIExecutor>(
+      facebook::jsc::makeJSCRuntime(), delegate, JSIExecutor::defaultTimeoutInvoker, runtimeInstaller_);
+}
+
+} // namespace facebook::react

smart-app-city/frontend/node_modules/react-native/React/CxxBridge/NSDataBigString.h

@@ -0,0 +1,40 @@
+/*
+ * 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.
+ */
+
+#import <Foundation/Foundation.h>
+
+#include <cxxreact/JSBigString.h>
+
+namespace facebook::react {
+
+class NSDataBigString : public JSBigString {
+ public:
+  // The NSData passed in must be be null-terminated.
+  NSDataBigString(NSData *data);
+
+  // The ASCII optimization is not enabled on iOS
+  bool isAscii() const override
+  {
+    return false;
+  }
+
+  const char *c_str() const override
+  {
+    return (const char *)[m_data bytes];
+  }
+
+  size_t size() const override
+  {
+    return m_length;
+  }
+
+ private:
+  NSData *m_data;
+  size_t m_length;
+};
+
+} // namespace facebook::react

smart-app-city/frontend/node_modules/react-native/React/CxxBridge/NSDataBigString.mm

@@ -0,0 +1,41 @@
+/*
+ * 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.
+ */
+
+#import "NSDataBigString.h"
+
+namespace facebook::react {
+
+static NSData *ensureNullTerminated(NSData *source)
+{
+  if (!source || source.length == 0) {
+    return nil;
+  }
+
+  NSUInteger sourceLength = source.length;
+  unsigned char lastByte;
+  [source getBytes:&lastByte range:NSMakeRange(sourceLength - 1, 1)];
+
+  // TODO: bundles from the packager should always include a NULL byte
+  // or we should we relax this requirement and only read as much from the
+  // buffer as length indicates
+  if (lastByte == '\0') {
+    return source;
+  } else {
+    NSMutableData *data = [source mutableCopy];
+    unsigned char nullByte = '\0';
+    [data appendBytes:&nullByte length:1];
+    return data;
+  }
+}
+
+NSDataBigString::NSDataBigString(NSData *data)
+{
+  m_length = [data length];
+  m_data = ensureNullTerminated(data);
+}
+
+} // namespace facebook::react

smart-app-city/frontend/node_modules/react-native/React/CxxBridge/RCTCxxBridgeDelegate.h

@@ -0,0 +1,31 @@
+/*
+ * 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 <memory>
+
+#import <React/RCTBridgeDelegate.h>
+
+namespace facebook::react {
+
+class JSExecutorFactory;
+
+} // namespace facebook::react
+
+// This is a separate class so non-C++ implementations don't need to
+// take a C++ dependency.
+
+@protocol RCTCxxBridgeDelegate <RCTBridgeDelegate>
+
+/**
+ * In the RCTCxxBridge, if this method is implemented, return a
+ * ExecutorFactory instance which can be used to create the executor.
+ * If not implemented, or returns an empty pointer, JSIExecutorFactory
+ * will be used with a JSCRuntime.
+ */
+- (std::unique_ptr<facebook::react::JSExecutorFactory>)jsExecutorFactoryForBridge:(RCTBridge *)bridge;
+
+@end

smart-app-city/frontend/node_modules/react-native/React/CxxBridge/RCTJSIExecutorRuntimeInstaller.h

@@ -0,0 +1,21 @@
+/*
+ * 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 <jsireact/JSIExecutor.h>
+
+namespace facebook::react {
+
+/**
+ * Creates a lambda used to bind a JSIRuntime in the context of
+ * Apple platforms, such as console logging, performance metrics, etc.
+ */
+JSIExecutor::RuntimeInstaller RCTJSIExecutorRuntimeInstaller(
+    JSIExecutor::RuntimeInstaller runtimeInstallerToWrap);
+
+} // namespace facebook::react

smart-app-city/frontend/node_modules/react-native/React/CxxBridge/RCTJSIExecutorRuntimeInstaller.mm

@@ -0,0 +1,30 @@
+/*
+ * 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 "RCTJSIExecutorRuntimeInstaller.h"
+
+#import <React/RCTLog.h>
+#include <chrono>
+
+namespace facebook::react {
+
+JSIExecutor::RuntimeInstaller RCTJSIExecutorRuntimeInstaller(JSIExecutor::RuntimeInstaller runtimeInstallerToWrap)
+{
+  return [runtimeInstaller = runtimeInstallerToWrap](jsi::Runtime &runtime) {
+    Logger iosLoggingBinder = [](const std::string &message, unsigned int logLevel) {
+      _RCTLogJavaScriptInternal(static_cast<RCTLogLevel>(logLevel), [NSString stringWithUTF8String:message.c_str()]);
+    };
+    bindNativeLogger(runtime, iosLoggingBinder);
+
+    // Wrap over the original runtimeInstaller
+    if (runtimeInstaller) {
+      runtimeInstaller(runtime);
+    }
+  };
+}
+
+} // namespace facebook::react

smart-app-city/frontend/node_modules/react-native/React/CxxBridge/RCTMessageThread.h

@@ -0,0 +1,39 @@
+/*
+ * 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.
+ */
+
+#import <memory>
+#import <string>
+
+#import <Foundation/Foundation.h>
+
+#import <React/RCTJavaScriptExecutor.h>
+#import <cxxreact/MessageQueueThread.h>
+#import <atomic>
+
+namespace facebook::react {
+
+class RCTMessageThread : public MessageQueueThread,
+                         public std::enable_shared_from_this<RCTMessageThread> {
+ public:
+  RCTMessageThread(NSRunLoop* runLoop, RCTJavaScriptCompleteBlock errorBlock);
+  ~RCTMessageThread() override;
+  void runOnQueue(std::function<void()>&&) override;
+  void runOnQueueSync(std::function<void()>&&) override;
+  void quitSynchronous() override;
+  void setRunLoop(NSRunLoop* runLoop);
+
+ private:
+  void tryFunc(const std::function<void()>& func);
+  void runAsync(std::function<void()> func);
+  void runSync(std::function<void()> func);
+
+  CFRunLoopRef m_cfRunLoop;
+  RCTJavaScriptCompleteBlock m_errorBlock;
+  std::atomic_bool m_shutdown;
+};
+
+} // namespace facebook::react

smart-app-city/frontend/node_modules/react-native/React/CxxBridge/RCTMessageThread.mm

@@ -0,0 +1,112 @@
+/*
+ * 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 "RCTMessageThread.h"
+
+#include <condition_variable>
+#include <mutex>
+
+#import <React/RCTCxxUtils.h>
+#import <React/RCTUtils.h>
+
+// A note about the implementation: This class is not used
+// generically.  It's a thin wrapper around a run loop which
+// implements a C++ interface, for use by the C++ xplat bridge code.
+// This means it can make certain non-generic assumptions.  In
+// particular, the sync functions are only used for bridge setup and
+// teardown, and quitSynchronous is guaranteed to be called.
+
+namespace facebook::react {
+
+RCTMessageThread::RCTMessageThread(NSRunLoop *runLoop, RCTJavaScriptCompleteBlock errorBlock)
+    : m_cfRunLoop([runLoop getCFRunLoop]), m_errorBlock(errorBlock), m_shutdown(false)
+{
+  CFRetain(m_cfRunLoop);
+}
+
+RCTMessageThread::~RCTMessageThread()
+{
+  RCTAssert(m_shutdown, @"RCTMessageThread: quitSynchronous() not called before destructor");
+  CFRelease(m_cfRunLoop);
+}
+
+// This is analogous to dispatch_async
+void RCTMessageThread::runAsync(std::function<void()> func)
+{
+  CFRunLoopPerformBlock(m_cfRunLoop, kCFRunLoopCommonModes, ^{
+    // Create an autorelease pool each run loop to prevent memory footprint from growing too large, which can lead to
+    // performance problems.
+    @autoreleasepool {
+      func();
+    }
+  });
+  CFRunLoopWakeUp(m_cfRunLoop);
+}
+
+// This is analogous to dispatch_sync
+void RCTMessageThread::runSync(std::function<void()> func)
+{
+  if (m_cfRunLoop == CFRunLoopGetCurrent()) {
+    func();
+    return;
+  }
+
+  dispatch_semaphore_t sema = dispatch_semaphore_create(0);
+  runAsync([func = std::make_shared<std::function<void()>>(std::move(func)), &sema] {
+    (*func)();
+    dispatch_semaphore_signal(sema);
+  });
+  dispatch_semaphore_wait(sema, DISPATCH_TIME_FOREVER);
+}
+
+void RCTMessageThread::tryFunc(const std::function<void()> &func)
+{
+  NSError *error = tryAndReturnError(func);
+  if (error) {
+    m_errorBlock(error);
+  }
+}
+
+void RCTMessageThread::runOnQueue(std::function<void()> &&func)
+{
+  if (m_shutdown) {
+    return;
+  }
+  runAsync([sharedThis = shared_from_this(), func = std::make_shared<std::function<void()>>(std::move(func))] {
+    if (!sharedThis->m_shutdown) {
+      sharedThis->tryFunc(*func);
+    }
+  });
+}
+
+void RCTMessageThread::runOnQueueSync(std::function<void()> &&func)
+{
+  if (m_shutdown) {
+    return;
+  }
+  runSync([sharedThis = shared_from_this(), func = std::move(func)] {
+    if (!sharedThis->m_shutdown) {
+      sharedThis->tryFunc(func);
+    }
+  });
+}
+
+void RCTMessageThread::quitSynchronous()
+{
+  m_shutdown = true;
+  runSync([] {});
+  CFRunLoopStop(m_cfRunLoop);
+}
+
+void RCTMessageThread::setRunLoop(NSRunLoop *runLoop)
+{
+  CFRelease(m_cfRunLoop);
+  m_cfRunLoop = [runLoop getCFRunLoop];
+  CFRetain(m_cfRunLoop);
+}
+
+} // namespace facebook::react

smart-app-city/frontend/node_modules/react-native/React/CxxBridge/RCTObjcExecutor.h

@@ -0,0 +1,31 @@
+/*
+ * 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 <functional>
+#include <memory>
+
+#import <React/RCTDefines.h>
+#import <React/RCTJavaScriptExecutor.h>
+#import <cxxreact/JSExecutor.h>
+
+namespace facebook::react {
+
+class RCTObjcExecutorFactory : public JSExecutorFactory {
+ public:
+  RCTObjcExecutorFactory(
+      id<RCTJavaScriptExecutor> jse,
+      RCTJavaScriptCompleteBlock errorBlock);
+  std::unique_ptr<JSExecutor> createJSExecutor(
+      std::shared_ptr<ExecutorDelegate> delegate,
+      std::shared_ptr<MessageQueueThread> jsQueue) override;
+
+ private:
+  id<RCTJavaScriptExecutor> m_jse;
+  RCTJavaScriptCompleteBlock m_errorBlock;
+};
+
+} // namespace facebook::react

smart-app-city/frontend/node_modules/react-native/React/CxxBridge/RCTObjcExecutor.mm

@@ -0,0 +1,146 @@
+/*
+ * 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.
+ */
+
+#import "RCTObjcExecutor.h"
+
+#import <React/RCTCxxUtils.h>
+#import <React/RCTFollyConvert.h>
+#import <React/RCTJavaScriptExecutor.h>
+#import <React/RCTLog.h>
+#import <React/RCTProfile.h>
+#import <React/RCTUtils.h>
+#import <cxxreact/JSBigString.h>
+#import <cxxreact/JSExecutor.h>
+#import <cxxreact/MessageQueueThread.h>
+#import <cxxreact/ModuleRegistry.h>
+#import <cxxreact/RAMBundleRegistry.h>
+#import <folly/json.h>
+
+namespace facebook::react {
+
+namespace {
+
+class JSEException : public std::runtime_error {
+ public:
+  JSEException(NSError *error) : runtime_error([[error description] UTF8String]) {}
+};
+
+class RCTObjcExecutor : public JSExecutor {
+ public:
+  RCTObjcExecutor(
+      id<RCTJavaScriptExecutor> jse,
+      RCTJavaScriptCompleteBlock errorBlock,
+      std::shared_ptr<MessageQueueThread> jsThread,
+      std::shared_ptr<ExecutorDelegate> delegate)
+      : m_jse(jse), m_errorBlock(errorBlock), m_delegate(std::move(delegate)), m_jsThread(std::move(jsThread))
+  {
+    m_jsCallback = ^(id json, NSError *error) {
+      if (error) {
+        // Do not use "m_errorBlock" here as the bridge might be in the middle
+        // of invalidation as a result of error handling and "this" can be
+        // already deallocated.
+        errorBlock(error);
+        return;
+      }
+
+      m_jsThread->runOnQueue(
+          [this, json] { m_delegate->callNativeModules(*this, convertIdToFollyDynamic(json), true); });
+    };
+
+    // Synchronously initialize the executor
+    [jse setUp];
+
+    folly::dynamic nativeModuleConfig = folly::dynamic::array;
+    auto moduleRegistry = m_delegate->getModuleRegistry();
+    for (const auto &name : moduleRegistry->moduleNames()) {
+      auto config = moduleRegistry->getConfig(name);
+      nativeModuleConfig.push_back(config ? config->config : nullptr);
+    }
+
+    folly::dynamic config = folly::dynamic::object("remoteModuleConfig", std::move(nativeModuleConfig));
+
+    setGlobalVariable("__fbBatchedBridgeConfig", std::make_unique<JSBigStdString>(folly::toJson(config)));
+  }
+
+  void initializeRuntime() override
+  {
+    // We do nothing here since initialization is done in the constructor
+  }
+
+  void loadBundle(std::unique_ptr<const JSBigString> script, std::string sourceURL) override
+  {
+    RCTProfileBeginFlowEvent();
+    [m_jse executeApplicationScript:[NSData dataWithBytes:script->c_str() length:script->size()]
+                          sourceURL:[[NSURL alloc] initWithString:@(sourceURL.c_str())]
+                         onComplete:^(NSError *error) {
+                           RCTProfileEndFlowEvent();
+
+                           if (error) {
+                             m_errorBlock(error);
+                             return;
+                           }
+
+                           [m_jse flushedQueue:m_jsCallback];
+                         }];
+  }
+
+  void setBundleRegistry(std::unique_ptr<RAMBundleRegistry>) override
+  {
+    RCTAssert(NO, @"RAM bundles are not supported in RCTObjcExecutor");
+  }
+
+  void registerBundle(uint32_t __unused bundleId, const std::string __unused &bundlePath) override
+  {
+    RCTAssert(NO, @"RAM bundles are not supported in RCTObjcExecutor");
+  }
+
+  void callFunction(const std::string &module, const std::string &method, const folly::dynamic &arguments) override
+  {
+    [m_jse callFunctionOnModule:@(module.c_str())
+                         method:@(method.c_str())
+                      arguments:convertFollyDynamicToId(arguments)
+                       callback:m_jsCallback];
+  }
+
+  void invokeCallback(double callbackId, const folly::dynamic &arguments) override
+  {
+    [m_jse invokeCallbackID:@(callbackId) arguments:convertFollyDynamicToId(arguments) callback:m_jsCallback];
+  }
+
+  virtual void setGlobalVariable(std::string propName, std::unique_ptr<const JSBigString> jsonValue) override
+  {
+    [m_jse injectJSONText:@(jsonValue->c_str()) asGlobalObjectNamed:@(propName.c_str()) callback:m_errorBlock];
+  }
+
+  virtual std::string getDescription() override
+  {
+    return [NSStringFromClass([m_jse class]) UTF8String];
+  }
+
+ private:
+  id<RCTJavaScriptExecutor> m_jse;
+  RCTJavaScriptCompleteBlock m_errorBlock;
+  std::shared_ptr<ExecutorDelegate> m_delegate;
+  std::shared_ptr<MessageQueueThread> m_jsThread;
+  RCTJavaScriptCallback m_jsCallback;
+};
+
+}
+
+RCTObjcExecutorFactory::RCTObjcExecutorFactory(id<RCTJavaScriptExecutor> jse, RCTJavaScriptCompleteBlock errorBlock)
+    : m_jse(jse), m_errorBlock(errorBlock)
+{
+}
+
+std::unique_ptr<JSExecutor> RCTObjcExecutorFactory::createJSExecutor(
+    std::shared_ptr<ExecutorDelegate> delegate,
+    std::shared_ptr<MessageQueueThread> jsQueue)
+{
+  return std::unique_ptr<JSExecutor>(new RCTObjcExecutor(m_jse, m_errorBlock, jsQueue, delegate));
+}
+
+} // namespace facebook::react