fix: upgrade CI/CD workflows to Node.js 22 for navigator API support

- Update both CI and deploy workflows from Node.js 20 to 22
- Node.js 21+ includes navigator global object natively
- Fixes certificate.spec.ts failures in CI (ReferenceError: navigator is not defined)
- Add PUBLIC_BASE_PATH to deploy workflow for configurable deployment paths
- Tests pass locally with Node v22.17.0 and now will pass in CI

Author: koosty

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: '20'
+          node-version: '22'
           cache: 'npm'
 
       - name: Install dependencies

.github/workflows/deploy.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: '20'
+          node-version: '22'
           cache: 'npm'
 
       - name: Install dependencies
@@ -34,6 +34,7 @@ jobs:
       - name: Build application
         run: npm run build
         env:
+          PUBLIC_BASE_PATH: ${{ vars.BASE_PATH || '/open-edu' }}
           # Firebase configuration for production
           PUBLIC_FIREBASE_API_KEY: ${{ secrets.FIREBASE_API_KEY }}
           PUBLIC_FIREBASE_AUTH_DOMAIN: ${{ secrets.FIREBASE_AUTH_DOMAIN }}