Update Docker volumes in docker-compose.yml and enhance Jenkinsfile for frontend testing

- Changed PostgreSQL data volume paths in docker-compose.yml to remove the trailing 'data' directory.
- Improved the 'Test frontend' stage in Jenkinsfile by adding cleanup steps and ensuring the workspace is correctly copied to the Docker container for testing.

Jenkinsfile

@@ -131,23 +131,36 @@ pipeline {
       }
     }
 
-    /* Frontend: i18n (paraglide no versionado) + vitest solo proyecto "server" (Node).
-     * "client" usa @vitest/browser+Playwright: requeriría playwright install (chromium) en el contenedor.
-     * pnpm run check svelte-check se omite mientras haya deuda de tipos en el árbol; pnpm run lint alinear cuando pase. */
+    // Test frontend: OBLIGATORIO usar el repo clonado (WORKSPACE), no la imagen del frontend en Harbor.
+    // Svelte se compila en el Dockerfile: la imagen de producción solo trae build/ + deps de runtime; no hay fuentes
+    // para vitest, ni paraglide desde inlang, ni pnpm devDependencies. Imagen usada aquí: solo node:22-bookworm.
+    // Mismo criterio que Test backend: docker cp (no -v) si Jenkins vive en Docker. Vitest: sin @vitest/browser en CI.
     stage('Test frontend') {
       steps {
         sh '''
           set -euxo pipefail
-          echo "== Test frontend (vitest —project server) =="
-          docker run --rm \
+          echo "== Test frontend (vitest) =="
+          FE_CONTAINER="anexo76-test-fe-${BUILD_NUMBER}"
+
+          cleanup() {
+            docker rm -f "$FE_CONTAINER" >/dev/null 2>&1 || true
+          }
+          trap cleanup EXIT
+
+          docker rm -f "$FE_CONTAINER" >/dev/null 2>&1 || true
+          docker run -d --name "$FE_CONTAINER" node:22-bookworm sleep infinity
+          docker exec "$FE_CONTAINER" mkdir -p /workspace
+          docker cp "$WORKSPACE/." "$FE_CONTAINER:/workspace"
+
+          docker exec \
             -e CI=true \
             -e NODE_ENV=test \
-            -e JENKINS_URL=${JENKINS_URL} \
-            -v "$WORKSPACE:/workspace" \
+            -e "JENKINS_URL=${JENKINS_URL}" \
             -w /workspace/frontend \
-            node:22-bookworm \
+            "$FE_CONTAINER" \
             bash -lc '
               set -euxo pipefail
+              test -f package.json
               node --version
               corepack enable
               pnpm --version