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/RefreshControl/RCTRefreshControl.m

@@ -0,0 +1,206 @@
+/*
+ * 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 "RCTRefreshControl.h"
+#import "RCTRefreshableProtocol.h"
+
+#import "RCTUtils.h"
+
+@interface RCTRefreshControl () <RCTRefreshableProtocol>
+@end
+
+@implementation RCTRefreshControl {
+  BOOL _isInitialRender;
+  BOOL _currentRefreshingState;
+  UInt64 _currentRefreshingStateClock;
+  UInt64 _currentRefreshingStateTimestamp;
+  BOOL _refreshingProgrammatically;
+  NSString *_title;
+  UIColor *_titleColor;
+  CGFloat _progressViewOffset;
+}
+
+- (instancetype)init
+{
+  if ((self = [super init])) {
+    [self addTarget:self action:@selector(refreshControlValueChanged) forControlEvents:UIControlEventValueChanged];
+    _currentRefreshingStateClock = 1;
+    _currentRefreshingStateTimestamp = 0;
+    _isInitialRender = true;
+    _currentRefreshingState = false;
+  }
+  return self;
+}
+
+RCT_NOT_IMPLEMENTED(-(instancetype)initWithCoder : (NSCoder *)aDecoder)
+
+- (void)layoutSubviews
+{
+  [super layoutSubviews];
+  [self _applyProgressViewOffset];
+
+  // Fix for bug #7976
+  if (self.backgroundColor == nil) {
+    self.backgroundColor = [UIColor clearColor];
+  }
+
+  // If the control is refreshing when mounted we need to call
+  // beginRefreshing in layoutSubview or it doesn't work.
+  if (_currentRefreshingState && _isInitialRender) {
+    [self beginRefreshingProgrammatically];
+  }
+  _isInitialRender = false;
+}
+
+- (void)beginRefreshingProgrammatically
+{
+  UInt64 beginRefreshingTimestamp = _currentRefreshingStateTimestamp;
+  _refreshingProgrammatically = YES;
+
+  // Fix for bug #24855
+  [self sizeToFit];
+
+  if (self.scrollView) {
+    // When using begin refreshing we need to adjust the ScrollView content offset manually.
+    UIScrollView *scrollView = (UIScrollView *)self.scrollView;
+
+    CGPoint offset = {scrollView.contentOffset.x, scrollView.contentOffset.y - self.frame.size.height};
+
+    // `beginRefreshing` must be called after the animation is done. This is why it is impossible
+    // to use `setContentOffset` with `animated:YES`.
+    [UIView animateWithDuration:0.25
+        delay:0
+        options:UIViewAnimationOptionBeginFromCurrentState
+        animations:^(void) {
+          [scrollView setContentOffset:offset];
+        }
+        completion:^(__unused BOOL finished) {
+          if (beginRefreshingTimestamp == self->_currentRefreshingStateTimestamp) {
+            [super beginRefreshing];
+            [self setCurrentRefreshingState:super.refreshing];
+          }
+        }];
+  } else if (beginRefreshingTimestamp == self->_currentRefreshingStateTimestamp) {
+    [super beginRefreshing];
+    [self setCurrentRefreshingState:super.refreshing];
+  }
+}
+
+- (void)endRefreshingProgrammatically
+{
+  // The contentOffset of the scrollview MUST be greater than the contentInset before calling
+  // endRefreshing otherwise the next pull to refresh will not work properly.
+  UIScrollView *scrollView = self.scrollView;
+  if (scrollView && _refreshingProgrammatically && scrollView.contentOffset.y < -scrollView.contentInset.top) {
+    UInt64 endRefreshingTimestamp = _currentRefreshingStateTimestamp;
+    CGPoint offset = {scrollView.contentOffset.x, -scrollView.contentInset.top};
+    [UIView animateWithDuration:0.25
+        delay:0
+        options:UIViewAnimationOptionBeginFromCurrentState
+        animations:^(void) {
+          [scrollView setContentOffset:offset];
+        }
+        completion:^(__unused BOOL finished) {
+          if (endRefreshingTimestamp == self->_currentRefreshingStateTimestamp) {
+            [super endRefreshing];
+            [self setCurrentRefreshingState:super.refreshing];
+          }
+        }];
+  } else {
+    [super endRefreshing];
+  }
+}
+
+- (void)_applyProgressViewOffset
+{
+  // Setting the UIRefreshControl's frame breaks integration with ContentInset from the superview
+  // if it is a UIScrollView. This integration happens when setting the UIScrollView's .refreshControl
+  // property. For this reason, setting the frame manually should be avoided, if not needed.
+  if (_progressViewOffset == 0.f) {
+    return;
+  }
+
+  // progressViewOffset must be converted from the ScrollView parent's coordinate space to
+  // the coordinate space of the RefreshControl. This ensures that the control respects any
+  // offset in the view hierarchy, and that progressViewOffset is not inadvertently applied
+  // multiple times.
+  UIView *scrollView = self.superview;
+  UIView *target = scrollView.superview;
+  CGPoint rawOffset = CGPointMake(0, _progressViewOffset);
+  CGPoint converted = [self convertPoint:rawOffset fromView:target];
+  self.frame = CGRectOffset(self.frame, 0, converted.y);
+}
+
+- (NSString *)title
+{
+  return _title;
+}
+
+- (void)setTitle:(NSString *)title
+{
+  _title = title;
+  [self _updateTitle];
+}
+
+- (void)setTitleColor:(UIColor *)color
+{
+  _titleColor = color;
+  [self _updateTitle];
+}
+
+- (void)_updateTitle
+{
+  if (!_title) {
+    return;
+  }
+
+  NSMutableDictionary *attributes = [NSMutableDictionary dictionary];
+  if (_titleColor) {
+    attributes[NSForegroundColorAttributeName] = _titleColor;
+  }
+
+  self.attributedTitle = [[NSAttributedString alloc] initWithString:_title attributes:attributes];
+}
+
+- (void)setRefreshing:(BOOL)refreshing
+{
+  if (_currentRefreshingState != refreshing) {
+    [self setCurrentRefreshingState:refreshing];
+
+    if (refreshing) {
+      if (!_isInitialRender) {
+        [self beginRefreshingProgrammatically];
+      }
+    } else {
+      [self endRefreshingProgrammatically];
+    }
+  }
+}
+
+- (void)setCurrentRefreshingState:(BOOL)refreshing
+{
+  _currentRefreshingState = refreshing;
+  _currentRefreshingStateTimestamp = _currentRefreshingStateClock++;
+}
+
+- (void)setProgressViewOffset:(CGFloat)offset
+{
+  _progressViewOffset = offset;
+  [self _applyProgressViewOffset];
+}
+
+- (void)refreshControlValueChanged
+{
+  [self setCurrentRefreshingState:super.refreshing];
+  _refreshingProgrammatically = NO;
+
+  if (_onRefresh) {
+    _onRefresh(nil);
+  }
+}
+
+@end