test: ignore e2e artifacts

Co-Authored-By: Codex <noreply@anthropic.com>

.gitignore

@@ -28,6 +28,13 @@ CLAUDE.md
 logs/ 
 docs/superpowers
 
+# E2E / Playwright artifacts
+test-artifacts/
+web/.playwright/
+web/playwright-report/
+web/test-results/
+web/e2e/.auth/
+
 electron/node_modules
 electron/dist
 data/