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/dist/schema/yaml-1.1/pairs.js

@@ -0,0 +1,82 @@
+'use strict';
+
+var identity = require('../../nodes/identity.js');
+var Pair = require('../../nodes/Pair.js');
+var Scalar = require('../../nodes/Scalar.js');
+var YAMLSeq = require('../../nodes/YAMLSeq.js');
+
+function resolvePairs(seq, onError) {
+    if (identity.isSeq(seq)) {
+        for (let i = 0; i < seq.items.length; ++i) {
+            let item = seq.items[i];
+            if (identity.isPair(item))
+                continue;
+            else if (identity.isMap(item)) {
+                if (item.items.length > 1)
+                    onError('Each pair must have its own sequence indicator');
+                const pair = item.items[0] || new Pair.Pair(new Scalar.Scalar(null));
+                if (item.commentBefore)
+                    pair.key.commentBefore = pair.key.commentBefore
+                        ? `${item.commentBefore}\n${pair.key.commentBefore}`
+                        : item.commentBefore;
+                if (item.comment) {
+                    const cn = pair.value ?? pair.key;
+                    cn.comment = cn.comment
+                        ? `${item.comment}\n${cn.comment}`
+                        : item.comment;
+                }
+                item = pair;
+            }
+            seq.items[i] = identity.isPair(item) ? item : new Pair.Pair(item);
+        }
+    }
+    else
+        onError('Expected a sequence for this tag');
+    return seq;
+}
+function createPairs(schema, iterable, ctx) {
+    const { replacer } = ctx;
+    const pairs = new YAMLSeq.YAMLSeq(schema);
+    pairs.tag = 'tag:yaml.org,2002:pairs';
+    let i = 0;
+    if (iterable && Symbol.iterator in Object(iterable))
+        for (let it of iterable) {
+            if (typeof replacer === 'function')
+                it = replacer.call(iterable, String(i++), it);
+            let key, value;
+            if (Array.isArray(it)) {
+                if (it.length === 2) {
+                    key = it[0];
+                    value = it[1];
+                }
+                else
+                    throw new TypeError(`Expected [key, value] tuple: ${it}`);
+            }
+            else if (it && it instanceof Object) {
+                const keys = Object.keys(it);
+                if (keys.length === 1) {
+                    key = keys[0];
+                    value = it[key];
+                }
+                else {
+                    throw new TypeError(`Expected tuple with one key, not ${keys.length} keys`);
+                }
+            }
+            else {
+                key = it;
+            }
+            pairs.items.push(Pair.createPair(key, value, ctx));
+        }
+    return pairs;
+}
+const pairs = {
+    collection: 'seq',
+    default: false,
+    tag: 'tag:yaml.org,2002:pairs',
+    resolve: resolvePairs,
+    createNode: createPairs
+};
+
+exports.createPairs = createPairs;
+exports.pairs = pairs;
+exports.resolvePairs = resolvePairs;