fix(tests): improve context setup for audit logging in DNS provider service tests

- Updated context key definitions in dns_provider_service_test.go to use string constants instead of custom types for user_id, client_ip, and user_agent.
- Ensured proper context values are set in audit logging tests to avoid defaulting to "system" or empty values.
- Enhanced in-memory SQLite database setup in credential_service_test.go to use WAL mode and busy timeout for better concurrency during tests.

.github/workflows/playwright.yml

@@ -17,8 +17,26 @@ jobs:
       run: npm ci
     - name: Install Playwright Browsers
       run: npx playwright install --with-deps
+    - name: Build Frontend
+      working-directory: frontend
+      run: npm run build
+    - name: Start Application Stack
+      run: docker compose -f .docker/compose/docker-compose.local.yml up -d
+    - name: Wait for Application Health
+      run: |
+        echo "Waiting for application to be ready..."
+        timeout 120 bash -c 'until curl -sf http://localhost:8080/api/v1/health > /dev/null; do
+          echo "Waiting for health endpoint..."
+          sleep 2
+        done'
+        echo "✅ Application is ready"
     - name: Run Playwright tests
+      env:
+        PLAYWRIGHT_BASE_URL: http://localhost:8080
       run: npx playwright test
+    - name: Stop Application Stack
+      if: always()
+      run: docker compose -f .docker/compose/docker-compose.local.yml down -v
     - uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6
       if: ${{ !cancelled() }}
       with: