During February 2026, this developer enhanced the Umbra plugin within the goatcorp/DalamudPluginsD17 repository by delivering improved marker functionality and updated user interface elements. The work focused on increasing marker accuracy and refining UI clarity, resulting in a more stable and productive experience for users. Utilizing C# and .NET for plugin development, the developer applied skills in UI design and software maintenance to implement these changes. The release process included disciplined version tagging and documentation, culminating in the Umbra 3.1.11 patch. This contribution addressed user needs for reliability and usability, supporting broader adoption and smoother workflows within the plugin ecosystem.