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/zustand/ts3.4/esm/middleware/devtools.d.ts

@@ -0,0 +1,102 @@
+import { StateCreator, StoreApi, StoreMutatorIdentifier } from '../vanilla';
+type Config = Parameters<(Window extends {
+    __REDUX_DEVTOOLS_EXTENSION__?: infer T;
+} ? T : {
+    connect: (param: any) => any;
+})['connect']>[0];
+declare module '../vanilla' {
+    interface StoreMutators<S, A> {
+        'zustand/devtools': WithDevtools<S>;
+    }
+}
+type Cast<T, U> = T extends U ? T : U;
+type Write<T, U> = Pick<T, Exclude<keyof T, keyof U>> & U;
+type TakeTwo<T> = T extends {
+    length: 0;
+} ? [
+    undefined,
+    undefined
+] : T extends {
+    length: 1;
+} ? [
+    /*a0*/ ...Cast<T, unknown[]>,
+    /*a1*/ undefined
+] : T extends {
+    length: 0 | 1;
+} ? [
+    /*a0*/ ...Cast<T, unknown[]>,
+    /*a1*/ undefined
+] : T extends {
+    length: 2;
+} ? T : T extends {
+    length: 1 | 2;
+} ? T : T extends {
+    length: 0 | 1 | 2;
+} ? T : T extends [
+    infer A0,
+    infer A1,
+    ...unknown[]
+] ? [
+    A0,
+    A1
+] : T extends [
+    infer A0,
+    (infer A1)?,
+    ...unknown[]
+] ? [
+    A0,
+    A1?
+] : T extends [
+    (infer A0)?,
+    (infer A1)?,
+    ...unknown[]
+] ? [
+    A0?,
+    A1?
+] : never;
+type WithDevtools<S> = Write<S, StoreDevtools<S>>;
+type StoreDevtools<S> = S extends {
+    setState: (...a: infer Sa) => infer Sr;
+} ? {
+    setState<A extends string | {
+        type: string;
+    }>(...a: [
+        /*a*/ ...TakeTwo<Sa>,
+        /*action*/ A
+    ]): Sr;
+} : never;
+export interface DevtoolsOptions extends Config {
+    name?: string;
+    enabled?: boolean;
+    anonymousActionType?: string;
+    store?: string;
+}
+type Devtools = <T, Mps extends [
+    StoreMutatorIdentifier,
+    unknown
+][] = [
+], Mcs extends [
+    StoreMutatorIdentifier,
+    unknown
+][] = [
+]>(initializer: StateCreator<T, [
+    ...Mps,
+    [
+        'zustand/devtools',
+        never
+    ]
+], Mcs>, devtoolsOptions?: DevtoolsOptions) => StateCreator<T, Mps, [
+    [
+        'zustand/devtools',
+        never
+    ],
+    ...Mcs
+]>;
+declare module '../vanilla' {
+    interface StoreMutators<S, A> {
+        'zustand/devtools': WithDevtools<S>;
+    }
+}
+export type NamedSet<T> = WithDevtools<StoreApi<T>>['setState'];
+export declare const devtools: Devtools;
+export {};