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/sucrase/dist/util/isAsyncOperation.js

@@ -0,0 +1,38 @@
+"use strict";Object.defineProperty(exports, "__esModule", {value: true});var _keywords = require('../parser/tokenizer/keywords');
+
+
+/**
+ * Determine whether this optional chain or nullish coalescing operation has any await statements in
+ * it. If so, we'll need to transpile to an async operation.
+ *
+ * We compute this by walking the length of the operation and returning true if we see an await
+ * keyword used as a real await (rather than an object key or property access). Nested optional
+ * chain/nullish operations need to be tracked but don't silence await, but a nested async function
+ * (or any other nested scope) will make the await not count.
+ */
+ function isAsyncOperation(tokens) {
+  let index = tokens.currentIndex();
+  let depth = 0;
+  const startToken = tokens.currentToken();
+  do {
+    const token = tokens.tokens[index];
+    if (token.isOptionalChainStart) {
+      depth++;
+    }
+    if (token.isOptionalChainEnd) {
+      depth--;
+    }
+    depth += token.numNullishCoalesceStarts;
+    depth -= token.numNullishCoalesceEnds;
+
+    if (
+      token.contextualKeyword === _keywords.ContextualKeyword._await &&
+      token.identifierRole == null &&
+      token.scopeDepth === startToken.scopeDepth
+    ) {
+      return true;
+    }
+    index += 1;
+  } while (depth > 0 && index < tokens.tokens.length);
+  return false;
+} exports.default = isAsyncOperation;