Worked on the MHSanaei/3x-ui repository to address a data integrity issue affecting client timestamp preservation during inbound record updates. Focused on backend development and API handling using Go, the solution involved a targeted bug fix that ensured client updated_at fields remained unchanged when parent inbound records were modified. This approach prevented unintended data loss and maintained historical accuracy for downstream analytics and processing. The change was delivered as a minimal, well-scoped commit, reflecting a careful engineering approach that prioritized reliability and maintainability in service workflows. The work demonstrated attention to detail in safeguarding critical data within backend systems.