Worked on the TanStack/router repository to enhance asset URL handling within manifest files, focusing on improving reliability and compatibility across environments. Addressed asset loading issues by replacing path.join with joinURL for joining JavaScript entries, ensuring standardized URL construction and reducing the risk of asset resolution failures. Isolated manifest-generation logic to streamline future maintenance and facilitate further enhancements, while also aligning integration with downstream tooling such as start-plugin-core for consistent asset loading throughout the build pipeline. Utilized TypeScript and full stack development skills to deliver a targeted feature improvement, laying the foundation for more robust manifest tooling in future plugin development.