Theo Beers focused on stabilizing authentication configuration for the valtimo-platform/valtimo-documentation repository, addressing a critical environment variable naming issue that impacted Keycloak OAuth2 integration. By correcting a typo in the Keycloak Issuer URI variable, Theo ensured that Spring Security OAuth2 client properties were properly recognized, reducing the risk of misconfiguration and production incidents. The work involved careful debugging, validation of end-to-end OAuth2 client setup, and clear documentation updates using Markdown. Although the contribution was limited to a targeted bug fix over one month, Theo demonstrated strong attention to configuration hygiene and improved onboarding for new environments through precise technical adjustments.