Worked on improving JSP taglib dependency stability within the apache/tomcat repository by addressing a bug related to non-deterministic absolute JAR paths in the _jspx_dependants map. Introduced a stable URI-based key format for resolving taglibs from external JARs, which ensured deterministic JSP compilation across various build environments and reduced environment-specific failures. This solution enhanced the reliability of JSP compilation in continuous integration and build pipelines. The work, implemented in Java with a focus on JSP and web development, laid the foundation for future improvements in taglib resolution strategy and contributed to more consistent and maintainable build processes.