During August 2025, contributed to the JetBrains/intellij-community repository by enhancing the content removal flow in headless tool window management. Developed a feature in Java that introduced listener-based validation for content removal queries within ToolWindowHeadlessManagerImpl, ensuring alignment with ContentManagerImpl and addressing a lifecycle discrepancy that previously risked invalid removals. Leveraged event-driven programming principles to improve internal API consistency and cross-module integration, thereby strengthening the reliability of content management in headless scenarios. The work focused on robust software development practices, delivering clear commit documentation and laying a foundation for future improvements in tool window content handling across related modules.