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-native/dev-middleware/dist/utils/DefaultBrowserLauncher.d.ts

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+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ *
+ * @format
+ * @oncall react_native
+ */
+
+import type { BrowserLauncher } from "../types/BrowserLauncher";
+/**
+ * Default `BrowserLauncher` implementation which opens URLs on the host
+ * machine.
+ */
+declare const DefaultBrowserLauncher: BrowserLauncher;
+declare const $$EXPORT_DEFAULT_DECLARATION$$: typeof DefaultBrowserLauncher;
+export default $$EXPORT_DEFAULT_DECLARATION$$;

smart-app-city/frontend/node_modules/@react-native/dev-middleware/dist/utils/DefaultBrowserLauncher.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true,
+});
+exports.default = void 0;
+var _fs = require("fs");
+var _path = _interopRequireDefault(require("path"));
+var _tempDir = _interopRequireDefault(require("temp-dir"));
+function _interopRequireDefault(obj) {
+  return obj && obj.__esModule ? obj : { default: obj };
+}
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ *
+ * @format
+ * @oncall react_native
+ */
+
+const { Launcher: EdgeLauncher } = require("@rnx-kit/chromium-edge-launcher");
+const ChromeLauncher = require("chrome-launcher");
+
+/**
+ * Default `BrowserLauncher` implementation which opens URLs on the host
+ * machine.
+ */
+const DefaultBrowserLauncher = {
+  /**
+   * Attempt to open the debugger frontend in a Google Chrome or Microsoft Edge
+   * app window.
+   */
+  launchDebuggerAppWindow: async (url) => {
+    let browserType = "chrome";
+    let chromePath;
+    try {
+      // Locate Chrome installation path, will throw if not found
+      chromePath = ChromeLauncher.getChromePath();
+    } catch (e) {
+      browserType = "edge";
+      chromePath = EdgeLauncher.getFirstInstallation();
+      if (chromePath == null) {
+        throw new Error(
+          "Unable to find a browser on the host to open the debugger. " +
+            "Supported browsers: Google Chrome, Microsoft Edge.\n" +
+            url
+        );
+      }
+    }
+    const userDataDir = await createTempDir(
+      `react-native-debugger-frontend-${browserType}`
+    );
+    const launchedChrome = await ChromeLauncher.launch({
+      chromeFlags: [
+        ...ChromeLauncher.Launcher.defaultFlags().filter(
+          /**
+           * This flag controls whether Chrome treats a visually covered (occluded) tab
+           * as "backgrounded". We launch CDT as a single tab/window via `--app`, so we
+           * do want Chrome to treat our tab as "backgrounded" when the UI is covered.
+           * Omitting this flag allows "visibilitychange" events to fire properly.
+           */
+          (flag) => flag !== "--disable-backgrounding-occluded-windows"
+        ),
+        `--app=${url}`,
+        `--user-data-dir=${userDataDir}`,
+        "--window-size=1200,600",
+        "--guest",
+      ],
+      chromePath,
+      ignoreDefaultFlags: true,
+    });
+    return {
+      kill: async () => launchedChrome.kill(),
+    };
+  },
+};
+async function createTempDir(dirName) {
+  const tempDir = _path.default.join(_tempDir.default, dirName);
+  await _fs.promises.mkdir(tempDir, {
+    recursive: true,
+  });
+  return tempDir;
+}
+var _default = DefaultBrowserLauncher;
+exports.default = _default;

smart-app-city/frontend/node_modules/@react-native/dev-middleware/dist/utils/DefaultBrowserLauncher.js.flow

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+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict
+ * @format
+ * @oncall react_native
+ */
+
+import type { BrowserLauncher } from "../types/BrowserLauncher";
+
+/**
+ * Default `BrowserLauncher` implementation which opens URLs on the host
+ * machine.
+ */
+declare const DefaultBrowserLauncher: BrowserLauncher;
+
+declare export default typeof DefaultBrowserLauncher;

smart-app-city/frontend/node_modules/@react-native/dev-middleware/dist/utils/getDevToolsFrontendUrl.d.ts

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+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ *
+ * @format
+ * @oncall react_native
+ */
+
+import type { Experiments } from "../types/Experiments";
+/**
+ * Get the DevTools frontend URL to debug a given React Native CDP target.
+ */
+declare function getDevToolsFrontendUrl(
+  experiments: Experiments,
+  webSocketDebuggerUrl: string,
+  devServerUrl: string
+): string;
+export default getDevToolsFrontendUrl;

smart-app-city/frontend/node_modules/@react-native/dev-middleware/dist/utils/getDevToolsFrontendUrl.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true,
+});
+exports.default = getDevToolsFrontendUrl;
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ *
+ * @format
+ * @oncall react_native
+ */
+
+/**
+ * Get the DevTools frontend URL to debug a given React Native CDP target.
+ */
+function getDevToolsFrontendUrl(
+  experiments,
+  webSocketDebuggerUrl,
+  devServerUrl
+) {
+  const scheme = new URL(webSocketDebuggerUrl).protocol.slice(0, -1);
+  const webSocketUrlWithoutProtocol = webSocketDebuggerUrl.replace(
+    /^wss?:\/\//,
+    ""
+  );
+  const searchParams = new URLSearchParams([
+    [scheme, webSocketUrlWithoutProtocol],
+    ["sources.hide_add_folder", "true"],
+  ]);
+  if (experiments.enableNetworkInspector) {
+    searchParams.append("unstable_enableNetworkPanel", "true");
+  }
+  return (
+    `${devServerUrl}/debugger-frontend/rn_inspector.html` +
+    "?" +
+    searchParams.toString()
+  );
+}

smart-app-city/frontend/node_modules/@react-native/dev-middleware/dist/utils/getDevToolsFrontendUrl.js.flow

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+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ * @oncall react_native
+ */
+
+import type { Experiments } from "../types/Experiments";
+
+/**
+ * Get the DevTools frontend URL to debug a given React Native CDP target.
+ */
+declare export default function getDevToolsFrontendUrl(
+  experiments: Experiments,
+  webSocketDebuggerUrl: string,
+  devServerUrl: string
+): string;