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/ReactCommon/jsinspector-modern/CONCEPTS.md

@@ -0,0 +1,27 @@
+# jsinspector-modern concepts
+
+## CDP object model
+
+### Target
+
+A debuggable entity that a debugger frontend can connect to.
+
+### Target Delegate
+
+An interface between a Target class and the underlying debuggable entity. For example, PageTargetDelegate is used by PageTarget to send page-related events to the native platform implementation.
+
+### Target Controller
+
+A private interface exposed by a Target class to its Sessions/Agents. For example, PageTargetController is used by PageAgent to safely access the page's PageTargetDelegate, without exposing PageTarget's other private state.
+
+### Session
+
+A single connection between a debugger frontend and a target. There can be multiple active sessions connected to the same target.
+
+### Agent
+
+A handler for a subset of CDP messages for a specific target as part of a specific session.
+
+### Agent Delegate
+
+An interface between an Agent class and some integration-specific, per-session logic/state it relies on (that does not fit in a Target Delegate). For example, a RuntimeAgentDelegate is used by RuntimeAgent to host Hermes's native CDP handler and delegate messages to it. The interface may look exactly like an Agent (purely CDP messages in/out) or there may be a more involved API to expose state/functionality needed by the Agent.