统一 Node 22 与后端安全运行基线（07-15-production-trust-closeout-cleanup）

.github/workflows/ci-e2e.yml

@@ -53,7 +53,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: "20"
+          node-version: "22"
           cache: npm
           cache-dependency-path: |
             server/package-lock.json