Worked on the ghostty-org/ghostty repository to deliver comprehensive bitmap font rendering test coverage for the Spleen 8x16 font across BDF, PCF, and OTB formats. Developed automated tests in Zig that perform pixel-perfect validation, ensuring rendered glyphs match expected patterns for each supported format. This approach improved reliability and reduced regression risk in font rendering, supporting safer UI deployments in multi-format environments. Demonstrated skills in Zig programming, cross-format font handling, and automated testing, with a disciplined focus on regression prevention and git-driven change management. No major bugs were reported or fixed during this period, reflecting a focus on feature development.