ci: always upload Playwright test results as artifacts

Upload both playwright-report/ and test-results/ (screenshots, traces)
on every run, not just failures.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.github/workflows/ci.yml

@@ -85,11 +85,13 @@ jobs:
           CI: true
 
       - uses: actions/upload-artifact@v4
-        if: failure()
+        if: always()
         with:
           name: playwright-report
-          path: playwright-report/
-          retention-days: 7
+          path: |
+            playwright-report/
+            test-results/
+          retention-days: 30
 
   docker-build:
     name: Docker Build