fix(ci): install Playwright browsers before running tests

Integration tests require Playwright chromium to be installed.
Without it, capture tests fail and cascade into baseline/prefilter failures.

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

Author: juancguerrerodev

.github/workflows/ci.yml

@@ -19,6 +19,9 @@ jobs:
 
       - run: npm ci
 
+      - name: Install Playwright
+        run: npx playwright install --with-deps chromium
+
       - name: Type check
         run: npm run typecheck