During February 2025, Wei Yu focused on enhancing diagnostics observability in the EZoni/WarpX repository by implementing ParticleHistogram2D support within the PICMI interface. Using Python and leveraging skills in API and backend development, Wei introduced the ReducedDiagnostic._handle_particle_histogram2d method, allowing users to define and record ParticleHistogram2D diagnostics directly from PICMI input files. This addition improved the collection and analysis of two-dimensional histogram data, supporting more granular physics analysis and streamlined debugging. The work demonstrated depth in scientific computing and full stack development, addressing a targeted need for improved diagnostics configuration and data accessibility in computational physics workflows.