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/Views/SafeAreaView/RCTSafeAreaShadowView.h

@@ -0,0 +1,16 @@
+/*
+ * 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 <React/RCTShadowView.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface RCTSafeAreaShadowView : RCTShadowView
+
+@end
+
+NS_ASSUME_NONNULL_END

smart-app-city/frontend/node_modules/react-native/React/Views/SafeAreaView/RCTSafeAreaShadowView.m

@@ -0,0 +1,53 @@
+/*
+ * 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 "RCTSafeAreaShadowView.h"
+
+#import <React/RCTAssert.h>
+#import <yoga/Yoga.h>
+
+#import "RCTSafeAreaViewLocalData.h"
+
+@implementation RCTSafeAreaShadowView
+
+- (void)setLocalData:(RCTSafeAreaViewLocalData *)localData
+{
+  RCTAssert(
+      [localData isKindOfClass:[RCTSafeAreaViewLocalData class]],
+      @"Local data object for `RCTSafeAreaShadowView` must be `RCTSafeAreaViewLocalData` instance.");
+
+  UIEdgeInsets insets = localData.insets;
+
+  super.paddingLeft = (YGValue){insets.left, YGUnitPoint};
+  super.paddingRight = (YGValue){insets.right, YGUnitPoint};
+  super.paddingTop = (YGValue){insets.top, YGUnitPoint};
+  super.paddingBottom = (YGValue){insets.bottom, YGUnitPoint};
+
+  [self didSetProps:@[ @"paddingLeft", @"paddingRight", @"paddingTop", @"paddingBottom" ]];
+}
+
+/**
+ * Removing support for setting padding from any outside code
+ * to prevent interfering this with local data.
+ */
+- (void)setPadding:(__unused YGValue)value
+{
+}
+- (void)setPaddingLeft:(__unused YGValue)value
+{
+}
+- (void)setPaddingRight:(__unused YGValue)value
+{
+}
+- (void)setPaddingTop:(__unused YGValue)value
+{
+}
+- (void)setPaddingBottom:(__unused YGValue)value
+{
+}
+
+@end

smart-app-city/frontend/node_modules/react-native/React/Views/SafeAreaView/RCTSafeAreaView.h

@@ -0,0 +1,22 @@
+/*
+ * 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 <UIKit/UIKit.h>
+
+#import <React/RCTView.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class RCTBridge;
+
+@interface RCTSafeAreaView : RCTView
+
+- (instancetype)initWithBridge:(RCTBridge *)bridge;
+
+@end
+
+NS_ASSUME_NONNULL_END

smart-app-city/frontend/node_modules/react-native/React/Views/SafeAreaView/RCTSafeAreaView.m

@@ -0,0 +1,75 @@
+/*
+ * 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 "RCTSafeAreaView.h"
+
+#import <React/RCTBridge.h>
+#import <React/RCTUIManager.h>
+
+#import "RCTSafeAreaViewLocalData.h"
+
+@implementation RCTSafeAreaView {
+  __weak RCTBridge *_bridge;
+  UIEdgeInsets _currentSafeAreaInsets;
+}
+
+- (instancetype)initWithBridge:(RCTBridge *)bridge
+{
+  if (self = [super initWithFrame:CGRectZero]) {
+    _bridge = bridge;
+  }
+
+  return self;
+}
+
+RCT_NOT_IMPLEMENTED(-(instancetype)initWithCoder : (NSCoder *)decoder)
+RCT_NOT_IMPLEMENTED(-(instancetype)initWithFrame : (CGRect)frame)
+
+- (NSString *)description
+{
+  NSString *superDescription = [super description];
+
+  // Cutting the last `>` character.
+  if (superDescription.length > 0 && [superDescription characterAtIndex:superDescription.length - 1] == '>') {
+    superDescription = [superDescription substringToIndex:superDescription.length - 1];
+  }
+
+  return [NSString stringWithFormat:@"%@; safeAreaInsets = %@; appliedSafeAreaInsets = %@>",
+                                    superDescription,
+                                    NSStringFromUIEdgeInsets(self.safeAreaInsets),
+                                    NSStringFromUIEdgeInsets(_currentSafeAreaInsets)];
+}
+
+static BOOL UIEdgeInsetsEqualToEdgeInsetsWithThreshold(UIEdgeInsets insets1, UIEdgeInsets insets2, CGFloat threshold)
+{
+  return ABS(insets1.left - insets2.left) <= threshold && ABS(insets1.right - insets2.right) <= threshold &&
+      ABS(insets1.top - insets2.top) <= threshold && ABS(insets1.bottom - insets2.bottom) <= threshold;
+}
+
+- (void)safeAreaInsetsDidChange
+{
+  [self setSafeAreaInsets:self.safeAreaInsets];
+}
+
+- (void)setSafeAreaInsets:(UIEdgeInsets)safeAreaInsets
+{
+  // Relayout with different padding may result in a close but slightly different result, amplified by Yoga rounding to
+  // physical pixel grid. To avoid infinite relayout, allow one physical pixel of difference, along with small amount of
+  // extra tolerance for FP error.
+  CGFloat tolerance = 1.0 / RCTScreenScale() + 0.01;
+
+  if (UIEdgeInsetsEqualToEdgeInsetsWithThreshold(safeAreaInsets, _currentSafeAreaInsets, tolerance)) {
+    return;
+  }
+
+  _currentSafeAreaInsets = safeAreaInsets;
+
+  RCTSafeAreaViewLocalData *localData = [[RCTSafeAreaViewLocalData alloc] initWithInsets:safeAreaInsets];
+  [_bridge.uiManager setLocalData:localData forView:self];
+}
+
+@end

smart-app-city/frontend/node_modules/react-native/React/Views/SafeAreaView/RCTSafeAreaViewLocalData.h

@@ -0,0 +1,20 @@
+/*
+ * 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 <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface RCTSafeAreaViewLocalData : NSObject
+
+- (instancetype)initWithInsets:(UIEdgeInsets)insets;
+
+@property (atomic, readonly) UIEdgeInsets insets;
+
+@end
+
+NS_ASSUME_NONNULL_END

smart-app-city/frontend/node_modules/react-native/React/Views/SafeAreaView/RCTSafeAreaViewLocalData.m

@@ -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.
+ */
+
+#import "RCTSafeAreaViewLocalData.h"
+
+@implementation RCTSafeAreaViewLocalData
+
+- (instancetype)initWithInsets:(UIEdgeInsets)insets
+{
+  if (self = [super init]) {
+    _insets = insets;
+  }
+
+  return self;
+}
+
+@end

smart-app-city/frontend/node_modules/react-native/React/Views/SafeAreaView/RCTSafeAreaViewManager.h

@@ -0,0 +1,16 @@
+/*
+ * 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 <React/RCTViewManager.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface RCTSafeAreaViewManager : RCTViewManager
+
+@end
+
+NS_ASSUME_NONNULL_END

smart-app-city/frontend/node_modules/react-native/React/Views/SafeAreaView/RCTSafeAreaViewManager.m

@@ -0,0 +1,28 @@
+/*
+ * 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 "RCTSafeAreaViewManager.h"
+
+#import "RCTSafeAreaShadowView.h"
+#import "RCTSafeAreaView.h"
+#import "RCTUIManager.h"
+
+@implementation RCTSafeAreaViewManager
+
+RCT_EXPORT_MODULE()
+
+- (UIView *)view
+{
+  return [[RCTSafeAreaView alloc] initWithBridge:self.bridge];
+}
+
+- (RCTSafeAreaShadowView *)shadowView
+{
+  return [RCTSafeAreaShadowView new];
+}
+
+@end