cache playwright binaries and shard tests

.github/workflows/test.yml

@@ -51,17 +51,31 @@ jobs:
 
   playwright-tests:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        shard: [1, 2, 3, 4, 5, 6]
     steps:
       - uses: actions/checkout@v4
       - name: Setup Node
         uses: ./.github/actions/setup-and-login
         with:
           build-and-run-server: true
 
+      - name: Get installed Playwright version
+        run: echo "PLAYWRIGHT_VERSION=$(node -e "console.log(require('./app/static/package-lock.json').packages['node_modules/@playwright/test'].version)")" >> $GITHUB_ENV
+      - name: Cache playwright binaries
+        uses: actions/cache@v4
+        id: playwright-cache
+        with:
+          path: |
+            ~/.cache/ms-playwright
+          key: ${{ runner.os }}-playwright-${{ env.PLAYWRIGHT_VERSION }}
       - name: Install Playwright Browsers
+        if: steps.playwright-cache.outputs.cache-hit != 'true'
         run: npx playwright install --with-deps
+
       - name: Test e2e
-        run:  npm run test:e2e --prefix=app/static
+        run:  npm run test:e2e --prefix=app/static -- --shard=${{ matrix.shard }}/6
 
   lint:
     runs-on: ubuntu-latest