diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 632473a..f8cd71b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 22
           cache: npm
           cache-dependency-path: portal/package-lock.json
 
@@ -34,7 +34,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 22
           cache: npm
           cache-dependency-path: portal/package-lock.json
 
@@ -91,7 +91,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 22
           cache: npm
           cache-dependency-path: portal/frontend/package-lock.json
 
@@ -110,7 +110,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 22
           cache: npm
           cache-dependency-path: portal/frontend/package-lock.json
 
diff --git a/portal/tests/app.test.js b/portal/tests/app.test.js
index 1ae28bc..6316f2a 100644
--- a/portal/tests/app.test.js
+++ b/portal/tests/app.test.js
@@ -1,12 +1,30 @@
 'use strict';
 
+const fs = require('fs');
+const path = require('path');
 const request = require('supertest');
 const app = require('../server');
 const db = require('../lib/db');
 
+const publicIndex = path.join(__dirname, '..', 'public', 'index.html');
+const frontendIndex = path.join(__dirname, '..', 'frontend', 'index.html');
+let wroteStubIndex = false;
+
 describe('app integration', () => {
     beforeAll(async () => {
         await db.initStorage();
+        // public/index.html es artefacto de Vite (gitignored); el job test no lo genera.
+        if (!fs.existsSync(publicIndex)) {
+            fs.mkdirSync(path.dirname(publicIndex), { recursive: true });
+            fs.copyFileSync(frontendIndex, publicIndex);
+            wroteStubIndex = true;
+        }
+    });
+
+    afterAll(() => {
+        if (wroteStubIndex && fs.existsSync(publicIndex)) {
+            fs.unlinkSync(publicIndex);
+        }
     });
 
     test('flujo completo: crear → descargar → completar', async () => {