fix: install Playwright browsers in GitHub Actions

Add step to install Playwright browsers before running tests.
Also add setup-node with Node.js 24.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: gugu

.github/workflows/frontend.yml

@@ -11,7 +11,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+      - uses: actions/setup-node@v3
+        with:
+          node-version: '24'
       - run: cd frontend && yarn install
+      - name: Install Playwright browsers
+        run: cd frontend && yarn playwright install
       - name: run tests
         run: cd frontend && yarn test
   license: