Worked on a major refactor of the NQCDynamics.jl repository, focusing on improving code organization and preparing the codebase for future Ring Polymer simulation features. The effort involved moving the get_hopping_eigenvalues function into a dedicated module, SurfaceHoppingMethods.jl, and integrating RingPolymerSimulation as a new dependency to enhance cross-package functionality. Using Julia, the work emphasized modular design, clear dependency management, and disciplined commit practices. No bugs were addressed during this period, as the primary goal was to strengthen maintainability and testability by clarifying module boundaries and simplifying the dependency graph for future development and feature expansion.