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/graphql/language/source.mjs

@@ -0,0 +1,51 @@
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+import { SYMBOL_TO_STRING_TAG } from "../polyfills/symbols.mjs";
+import inspect from "../jsutils/inspect.mjs";
+import devAssert from "../jsutils/devAssert.mjs";
+import instanceOf from "../jsutils/instanceOf.mjs";
+
+/**
+ * A representation of source input to GraphQL. The `name` and `locationOffset` parameters are
+ * optional, but they are useful for clients who store GraphQL documents in source files.
+ * For example, if the GraphQL input starts at line 40 in a file named `Foo.graphql`, it might
+ * be useful for `name` to be `"Foo.graphql"` and location to be `{ line: 40, column: 1 }`.
+ * The `line` and `column` properties in `locationOffset` are 1-indexed.
+ */
+export var Source = /*#__PURE__*/function () {
+  function Source(body) {
+    var name = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'GraphQL request';
+    var locationOffset = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {
+      line: 1,
+      column: 1
+    };
+    typeof body === 'string' || devAssert(0, "Body must be a string. Received: ".concat(inspect(body), "."));
+    this.body = body;
+    this.name = name;
+    this.locationOffset = locationOffset;
+    this.locationOffset.line > 0 || devAssert(0, 'line in locationOffset is 1-indexed and must be positive.');
+    this.locationOffset.column > 0 || devAssert(0, 'column in locationOffset is 1-indexed and must be positive.');
+  } // $FlowFixMe[unsupported-syntax] Flow doesn't support computed properties yet
+
+
+  _createClass(Source, [{
+    key: SYMBOL_TO_STRING_TAG,
+    get: function get() {
+      return 'Source';
+    }
+  }]);
+
+  return Source;
+}();
+/**
+ * Test if the given value is a Source object.
+ *
+ * @internal
+ */
+
+// eslint-disable-next-line no-redeclare
+export function isSource(source) {
+  return instanceOf(source, Source);
+}