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/@tanstack/react-query/build/modern/useIsFetching.cjs.map

@@ -0,0 +1 @@
+{"version":3,"sources":["../../src/useIsFetching.ts"],"sourcesContent":["'use client'\nimport * as React from 'react'\nimport { notifyManager } from '@tanstack/query-core'\n\nimport { useQueryClient } from './QueryClientProvider'\nimport type { QueryClient, QueryFilters } from '@tanstack/query-core'\n\nexport function useIsFetching(\n  filters?: QueryFilters,\n  queryClient?: QueryClient,\n): number {\n  const client = useQueryClient(queryClient)\n  const queryCache = client.getQueryCache()\n\n  return React.useSyncExternalStore(\n    React.useCallback(\n      (onStoreChange) =>\n        queryCache.subscribe(notifyManager.batchCalls(onStoreChange)),\n      [queryCache],\n    ),\n    () => client.isFetching(filters),\n    () => client.isFetching(filters),\n  )\n}\n"],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA;AAAA;AAAA;AAAA;AAAA;AACA,YAAuB;AACvB,wBAA8B;AAE9B,iCAA+B;AAGxB,SAAS,cACd,SACA,aACQ;AACR,QAAM,aAAS,2CAAe,WAAW;AACzC,QAAM,aAAa,OAAO,cAAc;AAExC,SAAa;AAAA,IACL;AAAA,MACJ,CAAC,kBACC,WAAW,UAAU,gCAAc,WAAW,aAAa,CAAC;AAAA,MAC9D,CAAC,UAAU;AAAA,IACb;AAAA,IACA,MAAM,OAAO,WAAW,OAAO;AAAA,IAC/B,MAAM,OAAO,WAAW,OAAO;AAAA,EACjC;AACF;","names":[]}