Merge pull request #2520 from PR0M3TH3AN/agents/daily/onboarding-audit-run-11292552968655961572

docs(ai): improve onboarding steps (onboarding-audit-agent)

CONTRIBUTING.md

@@ -132,6 +132,14 @@ To set up the project locally:
 
 4. **Run Tests**:
 
+   First, install the required browsers for UI testing:
+
+   ```bash
+   npx playwright install
+   ```
+
+   Then run the tests:
+
    ```bash
    npm run test:unit
    ```