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-navigation/routers/lib/module/BaseRouter.js

@@ -0,0 +1,55 @@
+import { nanoid } from 'nanoid/non-secure';
+/**
+ * Base router object that can be used when writing custom routers.
+ * This provides few helper methods to handle common actions such as `RESET`.
+ */
+const BaseRouter = {
+  getStateForAction(state, action) {
+    switch (action.type) {
+      case 'SET_PARAMS':
+        {
+          const index = action.source ? state.routes.findIndex(r => r.key === action.source) : state.index;
+          if (index === -1) {
+            return null;
+          }
+          return {
+            ...state,
+            routes: state.routes.map((r, i) => i === index ? {
+              ...r,
+              params: {
+                ...r.params,
+                ...action.payload.params
+              }
+            } : r)
+          };
+        }
+      case 'RESET':
+        {
+          const nextState = action.payload;
+          if (nextState.routes.length === 0 || nextState.routes.some(route => !state.routeNames.includes(route.name))) {
+            return null;
+          }
+          if (nextState.stale === false) {
+            if (state.routeNames.length !== nextState.routeNames.length || nextState.routeNames.some(name => !state.routeNames.includes(name))) {
+              return null;
+            }
+            return {
+              ...nextState,
+              routes: nextState.routes.map(route => route.key ? route : {
+                ...route,
+                key: `${route.name}-${nanoid()}`
+              })
+            };
+          }
+          return nextState;
+        }
+      default:
+        return null;
+    }
+  },
+  shouldActionChangeFocus(action) {
+    return action.type === 'NAVIGATE';
+  }
+};
+export default BaseRouter;
+//# sourceMappingURL=BaseRouter.js.map