debug(ci): add step to verify Node.js in PATH before checkout

.gitea/workflows/build.yml

@@ -25,6 +25,14 @@ jobs:
         working-directory: web
 
     steps:
+      - name: Verify Node.js
+        run: |
+          which node || echo "node not found in PATH"
+          node --version || echo "node command failed"
+          echo "PATH: $PATH"
+          export PATH="/usr/local/bin:$PATH"
+          node --version
+
       - name: Checkout repository
         uses: actions/checkout@v4