Add frontend-e2e job to CI pipeline

Runs Playwright E2E tests with Chromium after checkout.
Uploads HTML report as artifact on failure.
build-and-publish now requires all three test jobs.

.gitea/workflows/ci.yaml

@@ -46,8 +46,35 @@ jobs:
       - name: Production build
         run: cd frontend && npm run build
 
+  frontend-e2e:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Node 24
+        uses: actions/setup-node@v4
+        with:
+          node-version: 24
+
+      - name: Install dependencies
+        run: cd frontend && npm ci
+
+      - name: Install Playwright browsers
+        run: cd frontend && npx playwright install --with-deps chromium
+
+      - name: Run E2E tests
+        run: cd frontend && npm run test:e2e
+
+      - name: Upload Playwright report
+        uses: actions/upload-artifact@v4
+        if: ${{ !cancelled() }}
+        with:
+          name: playwright-report
+          path: frontend/playwright-report/
+          retention-days: 30
+
   build-and-publish:
-    needs: [backend-test, frontend-test]
+    needs: [backend-test, frontend-test, frontend-e2e]
     if: startsWith(github.ref, 'refs/tags/') && contains(github.ref_name, '.')
     runs-on: ubuntu-latest
     steps: