During April 2026, contributed to the badlogic/pi-mono repository by developing the Prompt Templates: Argument-Hint Frontmatter Autocomplete Guidance feature. This work enhanced the user experience by parsing argument-hint metadata from prompt template frontmatter and displaying expected argument formats directly within the autocomplete dropdown, following Claude Code conventions. The implementation involved TypeScript for both parsing logic and front end integration, with comprehensive testing to ensure reliability. Documentation and changelog updates were provided to support adoption, covering various scenarios such as required and optional hints, missing or empty values, and special characters. Markdown was used for documentation and maintaining clear project records.