Developed and delivered cross-session user theme persistence for the RSSNext/Folo Electron application, enabling users to retain their preferred appearance settings across app restarts. This feature was implemented by designing a robust persistence mechanism using Electron’s state and storage management capabilities, with all changes validated through disciplined commit practices. The work focused on decomposing the theming feature into maintainable components and ensuring stability by addressing a persistence bug related to theme resets. Utilizing TypeScript and front end development skills, the solution improved user experience by providing consistent theming, reducing friction, and minimizing support requests related to lost or reset theme preferences.