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/metro-minify-terser/src/index.js

@@ -0,0 +1,4 @@
+"use strict";
+
+const minifier = require("./minifier");
+module.exports = minifier;

smart-app-city/frontend/node_modules/metro-minify-terser/src/index.js.flow

@@ -0,0 +1,16 @@
+/**
+ * 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
+ */
+
+'use strict';
+
+const minifier = require('./minifier');
+
+module.exports = minifier;

smart-app-city/frontend/node_modules/metro-minify-terser/src/minifier.js

@@ -0,0 +1,48 @@
+"use strict";
+
+const terser = require("terser");
+async function minifier(options) {
+  const result = await minify(options);
+  if (!options.map || result.map == null) {
+    return {
+      code: result.code,
+    };
+  }
+  const map = JSON.parse(result.map);
+  return {
+    code: result.code,
+    map: {
+      ...map,
+      sources: [options.filename],
+    },
+  };
+}
+async function minify({ code, map, reserved, config }) {
+  const options = {
+    ...config,
+    output: {
+      ...(config.output ?? {}),
+    },
+    mangle:
+      config.mangle === false
+        ? false
+        : {
+            ...config.mangle,
+            reserved,
+          },
+    sourceMap: map
+      ? config.sourceMap === false
+        ? false
+        : {
+            ...config.sourceMap,
+            content: map,
+          }
+      : false,
+  };
+  const result = await terser.minify(code, options);
+  return {
+    code: result.code,
+    map: result.map,
+  };
+}
+module.exports = minifier;

smart-app-city/frontend/node_modules/metro-minify-terser/src/minifier.js.flow

@@ -0,0 +1,72 @@
+/**
+ * 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
+ */
+
+'use strict';
+
+import type {BasicSourceMap} from 'metro-source-map';
+import type {MinifierOptions, MinifierResult} from 'metro-transform-worker';
+
+const terser = require('terser');
+
+async function minifier(options: MinifierOptions): Promise<MinifierResult> {
+  const result = await minify(options);
+
+  if (!options.map || result.map == null) {
+    return {code: result.code};
+  }
+
+  const map: BasicSourceMap = JSON.parse(result.map);
+
+  return {code: result.code, map: {...map, sources: [options.filename]}};
+}
+
+async function minify({
+  code,
+  map,
+  reserved,
+  config,
+}: MinifierOptions): Promise<{code: string, map: ?string}> {
+  const options = {
+    ...config,
+    output: {
+      // Mitigate https://github.com/terser/terser/issues/1341 - Terser may
+      // set its internal data on this object, so give it a shallow copy.
+      ...(config.output ?? {}),
+    },
+    mangle:
+      config.mangle === false
+        ? false
+        : {
+            ...config.mangle,
+            reserved,
+          },
+    sourceMap: map
+      ? config.sourceMap === false
+        ? false
+        : {
+            ...config.sourceMap,
+            content: map,
+          }
+      : false,
+  };
+
+  /* $FlowFixMe(>=0.111.0 site=react_native_fb) This comment suppresses an
+   * error found when Flow v0.111 was deployed. To see the error, delete this
+   * comment and run Flow. */
+  const result = await terser.minify(code, options);
+
+  return {
+    code: result.code,
+    map: result.map,
+  };
+}
+
+module.exports = minifier;