Worked on the immich-app/immich repository to address issues with database backup timestamp and timezone handling in the web UI. Focused on correcting how backup times are parsed and displayed, ensuring that relative times accurately reflect both server and user local timezones. Used JavaScript, TypeScript, and Svelte to update frontend logic, add a timezone field to the backup data transfer object, and regenerate OpenAPI types for consistency. Simplified type management by removing redundant types and cleaning up type casts. This work improved the reliability and clarity of backup-related workflows, reinforcing alignment between frontend and backend data representations.