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/ReactAndroid/proguard-rules.pro

@@ -0,0 +1,76 @@
+# 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.
+
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /usr/local/Cellar/android-sdk/24.3.3/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# Disabling obfuscation is useful if you collect stack traces from production crashes
+# (unless you are using a system that supports de-obfuscate the stack traces).
+# -dontobfuscate
+
+# React Native
+
+# Keep our interfaces so they can be used by other ProGuard rules.
+# See http://sourceforge.net/p/proguard/bugs/466/
+-keep,allowobfuscation @interface com.facebook.proguard.annotations.DoNotStrip
+-keep,allowobfuscation @interface com.facebook.proguard.annotations.KeepGettersAndSetters
+
+# Do not strip any method/class that is annotated with @DoNotStrip
+-keep @com.facebook.proguard.annotations.DoNotStrip class *
+-keepclassmembers class * {
+    @com.facebook.proguard.annotations.DoNotStrip *;
+}
+-keep @com.facebook.proguard.annotations.DoNotStripAny class * {
+    *;
+}
+-keep @com.facebook.jni.annotations.DoNotStrip class *
+-keepclassmembers class * {
+    @com.facebook.jni.annotations.DoNotStrip *;
+}
+-keep @com.facebook.jni.annotations.DoNotStripAny class * {
+    *;
+}
+
+-keepclassmembers @com.facebook.proguard.annotations.KeepGettersAndSetters class * {
+  void set*(***);
+  *** get*();
+}
+
+-keep class * implements com.facebook.react.bridge.JavaScriptModule { *; }
+-keep class * implements com.facebook.react.bridge.NativeModule { *; }
+-keepclassmembers,includedescriptorclasses class * { native <methods>; }
+-keepclassmembers class *  { @com.facebook.react.uimanager.annotations.ReactProp <methods>; }
+-keepclassmembers class *  { @com.facebook.react.uimanager.annotations.ReactPropGroup <methods>; }
+
+-dontwarn com.facebook.react.**
+-keep,includedescriptorclasses class com.facebook.react.bridge.** { *; }
+-keep,includedescriptorclasses class com.facebook.react.turbomodule.core.** { *; }
+-keep,includedescriptorclasses class com.facebook.react.internal.turbomodule.core.** { *; }
+
+# hermes
+-keep class com.facebook.jni.** { *; }
+
+
+# okio
+
+-keep class sun.misc.Unsafe { *; }
+-dontwarn java.nio.file.*
+-dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
+-dontwarn okio.**
+
+# yoga
+-keep,allowobfuscation @interface com.facebook.yoga.annotations.DoNotStrip
+-keep @com.facebook.yoga.annotations.DoNotStrip class *
+-keepclassmembers class * {
+    @com.facebook.yoga.annotations.DoNotStrip *;
+}