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/chrome-launcher/.github/workflows/ci.yml

@@ -0,0 +1,56 @@
+name: 🛠
+
+on:
+  push:
+    branches: [main]
+  pull_request: # run on all PRs, not just PRs to a particular branch
+
+jobs:
+  basics:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node: [ 'latest', 'lts/*', 'lts/-1' ]
+    name: basics (node ${{ matrix.node }})
+
+    steps:
+    - name: git clone
+      uses: actions/checkout@v3
+
+    - name: Setup node
+      uses: actions/setup-node@v3
+      with:
+        node-version: ${{ matrix.node }}
+        cache: 'yarn'
+
+    - run: yarn --frozen-lockfile --network-timeout 1000000
+    - run: yarn build
+
+    - run: yarn test-formatting
+    - run: yarn type-check
+
+    # Run tests that require headful Chrome.
+    - run: sudo apt-get install xvfb
+    - name: yarn test
+      run: xvfb-run --auto-servernum yarn test --reporter=spec
+
+  unit:
+    strategy:
+      matrix:
+        os: [macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    name: unit_${{ matrix.os }}
+
+    steps:
+    - name: git clone
+      uses: actions/checkout@v3
+
+    - name: Use Node.js
+      uses: actions/setup-node@v3
+      with:
+        node-version: lts/*
+        cache: 'yarn'
+
+    - run: yarn --frozen-lockfile --network-timeout 1000000
+    - run: yarn build
+    - run: yarn test --reporter=spec

smart-app-city/frontend/node_modules/chrome-launcher/.github/workflows/lh-smoke.yml

@@ -0,0 +1,48 @@
+name: smoke
+
+on:
+  push:
+    branches: [main]
+  pull_request: # run on all PRs, not just PRs to a particular branch
+
+jobs:
+  # Only run smoke tests for windows against stable chrome.
+  lh-smoke-windows:
+    strategy:
+      matrix:
+        smoke-test-shard: [1, 2]
+      # e.g. if set 1 fails, continue with set 2 anyway
+      fail-fast: false
+    runs-on: windows-latest
+    name: Windows smoke ${{ matrix.smoke-test-shard }}/2
+
+    steps:
+    - name: git clone
+      uses: actions/checkout@v3
+
+    - name: Use Node.js
+      uses: actions/setup-node@v3
+      with:
+        node-version: lts/*
+        cache: 'yarn'
+    
+    # chrome-launcher
+    # This'll add lighthouse AND install chrome-launcher's deps
+    - run: yarn add --frozen-lockfile --network-timeout 1000000 -D https://github.com/GoogleChrome/lighthouse.git#main
+    - run: yarn build
+
+    # lighthouse 
+    - run: yarn --cwd node_modules/lighthouse/ install --frozen-lockfile --network-timeout 1000000
+    - run: yarn reset-link
+    - run: yarn --cwd node_modules/lighthouse/ build-report
+
+    - name: Run smoke tests
+      # Windows bots are slow, so only run enough tests to verify matching behavior.
+      run: yarn --cwd node_modules/lighthouse/ smoke --debug -j=2 --retries=0 --shard=${{ matrix.smoke-test-shard }}/2 dbw oopif offline lantern metrics
+
+    - name: Upload failures
+      if: failure()
+      uses: actions/upload-artifact@v1
+      with:
+        name: Smokehouse (windows)
+        path: node_modules/lighthouse/.tmp/smokehouse-ci-failures/