During October 2025, this developer focused on enhancing the Mandarin interface of the CreaMakers/changli-planet-app by addressing a navigation issue affecting full-screen gesture support. Using Kotlin and Android development skills, they implemented a targeted bug fix that restored expected WebView back navigation, allowing users to exit an activity when no further pages remained. The solution was validated through UI flow testing and delivered as a single, traceable commit, minimizing risk to the codebase. This work improved the user experience for Mandarin-speaking users by aligning gesture behavior with other locales, demonstrating careful attention to platform consistency and user retention.