Developed a frecency-based file autocomplete feature for the sst/opencode CLI, focusing on improving file discovery speed and overall developer productivity. Leveraging TypeScript and React, the work introduced a modular FrecencyProvider that calculates and applies frecency scores to file suggestions, ensuring that recently accessed files appear more prominently in autocomplete results. The implementation established a scalable provider-pattern architecture, making it straightforward to extend frecency-based ranking to additional CLI commands in the future. This feature enhanced the user experience by reducing the time required to locate relevant files, with clean, extensible code and no major bugs reported during the development period.