chore(e2e): Setup E2E testing for the UI

.github/workflows/ui-end2end.yml

@@ -0,0 +1,78 @@
+name: UI - E2E Tests
+
+on:
+  pull_request:
+    branches:
+      - master
+      - "v5.*"
+    paths:
+      - 'ui/**'
+
+env:
+  SERVICES_TO_START: "api-dev postgres valkey worker-beat worker-dev"
+  DOCKER_COMPOSE_FILE: "docker-compose-dev.yml"
+
+jobs:
+  e2e:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: 'npm'
+          cache-dependency-path: './ui/package-lock.json'
+
+      - name: Cache Playwright browsers
+        uses: actions/cache@v4
+        with:
+          path: ~/.cache/ms-playwright
+          key: playwright-${{ runner.os }}-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            playwright-${{ runner.os }}-
+
+      - name: Install dependencies
+        run: npm ci
+        working-directory: ./ui
+
+      - name: Install Playwright Browsers
+        run: npx playwright install --with-deps
+        working-directory: ./ui
+
+      - name: Start Docker Compose backend
+        run: docker-compose -f ${DOCKER_COMPOSE_FILE} up -d ${SERVICES_TO_START}
+
+      - name: Wait for API to be ready
+        run: |
+          for i in {1..30}; do
+            if curl -s http://localhost:8000/; then
+              echo "API is up!"
+              break
+            fi
+            echo "Waiting for API..."
+            sleep 5
+          done
+
+      - name: Run Playwright tests
+        run: npx playwright test
+        working-directory: ./ui
+
+      - name: Upload Playwright report
+        uses: actions/upload-artifact@v4
+        with:
+          name: playwright-report
+          path: ./ui/playwright-report
+
+      - name: Upload Playwright videos
+        uses: actions/upload-artifact@v4
+        with:
+          name: test-videos
+          path: ./ui/test-results/**/*.webm
+
+      - name: Docker Compose Down
+        if: always()
+        run: docker-compose -f ${DOCKER_COMPOSE_FILE} down