Anushka Singh developed a unified preconditioned solver interface for the pyccel/psydac repository, focusing on simplifying solver configuration for users working with linear algebra and numerical methods. She refactored the Conjugate Gradient and BiCGStab solvers in Python to accept preconditioners directly as parameters, eliminating the need for separate preconditioned solver classes and streamlining the API. Her work included improving naming conventions, handling edge cases such as complex matrices, and enhancing unit testing for reliability. This approach improved usability and maintainability, laying a foundation for future extensions and making it easier for new contributors to onboard and collaborate effectively.