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/yaml/browser/dist/schema/common/map.js

@@ -0,0 +1,17 @@
+import { isMap } from '../../nodes/identity.js';
+import { YAMLMap } from '../../nodes/YAMLMap.js';
+
+const map = {
+    collection: 'map',
+    default: true,
+    nodeClass: YAMLMap,
+    tag: 'tag:yaml.org,2002:map',
+    resolve(map, onError) {
+        if (!isMap(map))
+            onError('Expected a mapping for this tag');
+        return map;
+    },
+    createNode: (schema, obj, ctx) => YAMLMap.from(schema, obj, ctx)
+};
+
+export { map };

smart-app-city/frontend/node_modules/yaml/browser/dist/schema/common/null.js

@@ -0,0 +1,15 @@
+import { Scalar } from '../../nodes/Scalar.js';
+
+const nullTag = {
+    identify: value => value == null,
+    createNode: () => new Scalar(null),
+    default: true,
+    tag: 'tag:yaml.org,2002:null',
+    test: /^(?:~|[Nn]ull|NULL)?$/,
+    resolve: () => new Scalar(null),
+    stringify: ({ source }, ctx) => typeof source === 'string' && nullTag.test.test(source)
+        ? source
+        : ctx.options.nullStr
+};
+
+export { nullTag };

smart-app-city/frontend/node_modules/yaml/browser/dist/schema/common/seq.js

@@ -0,0 +1,17 @@
+import { isSeq } from '../../nodes/identity.js';
+import { YAMLSeq } from '../../nodes/YAMLSeq.js';
+
+const seq = {
+    collection: 'seq',
+    default: true,
+    nodeClass: YAMLSeq,
+    tag: 'tag:yaml.org,2002:seq',
+    resolve(seq, onError) {
+        if (!isSeq(seq))
+            onError('Expected a sequence for this tag');
+        return seq;
+    },
+    createNode: (schema, obj, ctx) => YAMLSeq.from(schema, obj, ctx)
+};
+
+export { seq };

smart-app-city/frontend/node_modules/yaml/browser/dist/schema/common/string.js

@@ -0,0 +1,14 @@
+import { stringifyString } from '../../stringify/stringifyString.js';
+
+const string = {
+    identify: value => typeof value === 'string',
+    default: true,
+    tag: 'tag:yaml.org,2002:str',
+    resolve: str => str,
+    stringify(item, ctx, onComment, onChompKeep) {
+        ctx = Object.assign({ actualString: true }, ctx);
+        return stringifyString(item, ctx, onComment, onChompKeep);
+    }
+};
+
+export { string };