Krzysztof Smogor enhanced the Snowflake-Labs/sansshell repository by developing a healthcheck connectivity error reporting feature focused on backend reliability. He implemented contextual error messaging for proxy-to-target connections, allowing for clearer diagnostics when connectivity issues arise. Using Go and leveraging his skills in backend development, error handling, and network programming, Krzysztof isolated changes to the healthcheck logic to preserve existing performance while expanding messaging to show detailed connectivity statuses for both proxy and server. This work addressed ambiguous error scenarios, improved traceability, and aligned with observability goals, ultimately supporting faster triage and remediation without introducing regressions or performance impacts.