Worked on enhancing resource management and deployment reliability for Buck2 PAR applications in the facebook/buck2 and facebook/buck2-prelude repositories. Addressed startup crashes and missing resource errors by materializing native C++ and Python resources alongside executables and generating resource manifests, ensuring correct runtime lookups in both standalone and xar deployments. Leveraged C++, Python, and build system management skills to emit <binary>.resources.json files and map transitive resources to package roots within PARs. Improved packaging workflows by propagating resource files through LinkProviders and updating runtime discovery mechanisms, resulting in more robust and predictable deployments for both native binaries and Python applications.