During June 2025, contributed to the sandialabs/pyGSTi repository by addressing a critical bug in the idle gate dimension calculation within optools.py. The work focused on ensuring that the idle gate is constructed using the system’s dimension squared, rather than a potentially reduced dimension that could result from leakage. This adjustment improved the accuracy and reliability of gate simulations and downstream calibration workflows. The solution leveraged expertise in Python, linear algebra, and numerical computing to resolve the issue, resulting in more faithful simulation fidelity for users of pyGSTi. No new features were added during this period, with efforts concentrated on this fix.