Fix: install playwright npm package before browser install

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: kunal-mansukhani

.github/workflows/create-challenge.yml

@@ -102,7 +102,8 @@ jobs:
             exit 0
           fi
           echo "Rendering $CHALLENGE_HTML"
-          npx --yes playwright install --with-deps chromium
+          npm install playwright
+          npx playwright install --with-deps chromium
           node .github/scripts/render-challenge.js "$CHALLENGE_HTML" /tmp/challenge-preview.png
           echo "challenge_html=$CHALLENGE_HTML" >> "$GITHUB_ENV"
 

.github/workflows/test-render-preview.yml

@@ -25,7 +25,8 @@ jobs:
 
       - name: Render challenge.html preview
         run: |
-          npx --yes playwright install --with-deps chromium
+          npm install playwright
+          npx playwright install --with-deps chromium
           node .github/scripts/render-challenge.js "${{ inputs.challenge_path }}" /tmp/challenge-preview.png
 
       - name: Comment on PR with preview